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WO2011093159A1 - Indicator device - Google Patents

Indicator device Download PDF

Info

Publication number
WO2011093159A1
WO2011093159A1 PCT/JP2011/050641 JP2011050641W WO2011093159A1 WO 2011093159 A1 WO2011093159 A1 WO 2011093159A1 JP 2011050641 W JP2011050641 W JP 2011050641W WO 2011093159 A1 WO2011093159 A1 WO 2011093159A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
light
light source
light guide
display
Prior art date
Application number
PCT/JP2011/050641
Other languages
French (fr)
Japanese (ja)
Inventor
博明 金子
Original Assignee
日本精機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Publication of WO2011093159A1 publication Critical patent/WO2011093159A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/215—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K37/00—Dashboards
    • B60K37/20—Dashboard panels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/60—Structural details of dashboards or instruments
    • B60K2360/68—Features of instruments
    • B60K2360/698—Pointers of combined instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens

Definitions

  • the present invention relates to an instrument device mounted on, for example, an automobile or a motorcycle, and in particular, a combination meter that incorporates a pointer-type instrument that indicates a measurement amount such as a vehicle speed and an engine speed, and a liquid crystal display that displays various information. It is related with the instrument apparatus called.
  • the instrument device includes a driving body such as a stepping motor, a pointer connected to the driving body, a display board having an indicator portion indicated by the pointer, and a display board guide disposed behind the display board.
  • a light body, a liquid crystal panel for displaying various information, a liquid crystal light guide disposed behind the liquid crystal panel, and at least a drive body and a liquid crystal panel are electrically connected and a light guide for display plate
  • Patent Documents 2 and 3 below those that illuminate a liquid crystal panel or a display plate by an edge light (side light) illumination method are known.
  • the instrument device described in Patent Document 2 below illuminates a liquid crystal panel by an edge light method.
  • the liquid crystal guide is orthogonal to the thickness direction.
  • a light source is arranged on the side end surface of the light body, and light from the light source is introduced from the side end surface to emit light.
  • the instrument device described in Patent Document 3 below illuminates the display board by an edge light method, and when the viewing direction of the user is the thickness direction of the light guide for the display board, the display is orthogonal to the thickness direction.
  • a light source is arranged on the side end face of the light guide for plate, and light from the light source is introduced from the side end face to emit light.
  • the present invention pays attention to the above-mentioned problems and aims to provide an instrument device that can achieve cost reduction.
  • the present invention relates to a drive main body, a pointer connected to the drive main body, a display board having an indicator portion indicated by the pointer, a light source for a display board that illuminates the display board, and a light source for the display board
  • a light guide for a display plate that guides light to the display plate a liquid crystal panel that displays various information, a light source for liquid crystal that illuminates the liquid crystal panel, and a liquid crystal guide that guides light from the light source for liquid crystal to the liquid crystal panel.
  • the light source for the display plate and the light source for the liquid crystal are incident on each side end surface of the light guide for the display plate and the light guide for the liquid crystal so that light of the light source for the liquid crystal is incident on the edge light system.
  • Instrument device comprising a light source and a liquid crystal light source arranged opposite to each other A light source substrate having a first substrate portion facing the light receiving surface of the light guide for liquid crystal and a second substrate portion facing the light receiving surface of the light guide for display plate in succession.
  • the display board light source and the liquid crystal light source are respectively mounted on each of the substrate portions.
  • the present invention is characterized in that it has a metal base member that supports at least the liquid crystal panel and the light guide for liquid crystal, and the light source substrate is attached to the base member.
  • This configuration eliminates the need for a dedicated component for mounting the light source substrate, and allows the heat radiation member to be shared by performing heat radiation of the display plate light source and the liquid crystal light source with a base member. Cost reduction is possible.
  • the present invention is characterized in that the light guide for display panel and the light guide for liquid crystal are integrated via a connecting portion. With this configuration, the number of parts can be reduced, and further cost reduction can be achieved.
  • the invention is characterized in that a liquid crystal panel, the display plate light guide, the liquid crystal light guide, and the light source substrate are combined through a predetermined member. With such a configuration, assembly is facilitated and further cost reduction is possible.
  • an instrument device that can achieve cost reduction can be provided.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 (hatching is omitted).
  • the instrument device As shown in FIGS. 1 to 3, the instrument device according to the first embodiment of the present invention includes a back cover 1, a circuit board 2, a support member 3, a lighting unit 4, a panel member 5, and a first member.
  • the display board 6, the second display board 7, and the pointer 8 are provided.
  • the back cover 1 is formed in a bottomed frame body whose front is opened with, for example, a light-blocking or translucent synthetic resin.
  • the circuit board 2, the support member 3, the lighting unit 4, the panel member 5, The first display board 6 and the second display board 7 are accommodated.
  • a decorative panel and a transparent cover are arranged on the front surface of the panel member 5, but these are not shown.
  • the circuit board 2 is based on a hard insulating member made of, for example, a glass epoxy material or paper phenol, and a circuit pattern (not shown) is printed on the circuit board 2.
  • This circuit board includes various indicators not shown, light-emitting diodes L that illuminate pointers 8 of auxiliary instruments to be described later and indicator parts to be described later, a plurality of drive bodies M according to each application, and an illumination unit that will be described in detail later. 4.
  • a pedestal member 9 and the like which will be described later are mounted and fixed.
  • a stepping motor having a pointer shaft S is applied to the drive main body M, a main body is mounted on the back side of the circuit board 2, and the pointer shaft S protrudes forward (penetrates) through the circuit board 2.
  • four drive bodies M are used according to the number of meters (pointers 8).
  • the support member 3 is made of, for example, milky white synthetic resin, and is disposed on the front surface of the circuit board 2, and includes a peripheral wall 31 along the outer shape of the circuit board 2, a first support portion 32 that supports the panel member 5 from behind, A second support 33 for supporting the first display panel 6 from behind, a first notch 34 corresponding to the illumination unit 4, and a second notch 35 facing an emission surface (to be described later) of the illumination unit 4;
  • a reflection plate portion (reflection member) 36 that reflects the light taken in through the second cutout portion 35 to the first display plate 6 side is provided.
  • the second support portion 33 is formed in a cylindrical shape along the outer shape of the first display panel 6, and a part thereof is formed so as to cross the front surface of the lighting unit 4.
  • the reflection plate portion 36 is formed as an inclined surface that approaches the first display plate 6 as the distance from the illumination unit 4 increases.
  • the illumination unit 4 includes a back frame (base member) 41, a first intermediate frame 42, a liquid crystal light guide 43, a dial light guide 44, 2 intermediate frames 45, a liquid crystal panel 46, and a front frame 47.
  • the back frame 41 is formed by forming a bottom plate portion 411 and side wall portions 412 and 413 surrounding the periphery of the bottom plate portion 411 by, for example, performing a bending process after pressing a metal plate.
  • the chassis member As the chassis member, the first intermediate frame 42, the liquid crystal light guide 43, the display panel light guide 44, the second intermediate frame 45, the liquid crystal panel 46, and the front frame 47 are supported.
  • it also functions as a heat radiating member that radiates heat from a liquid crystal light source and a display panel light source, which will be described later, and a shield member that blocks various noises, static electricity, and the like.
  • a wide portion corresponding to the display panel light guide 44 is formed on the bottom wall portion 411.
  • a side wall portion 413 corresponding to a light receiving surface described later of each of the light guides 43 and 44 is provided as a mounting portion for mounting the light source substrate 48, and is bent according to the position of the light receiving surface. Is formed.
  • the light source substrate 48 is formed of, for example, an FPC (flexible printed circuit) that is elongated along the side wall portion 413, and includes a first substrate portion 481 facing the light receiving surface of the liquid crystal light guide 43, and a display plate guide. A second substrate portion 482 facing the light receiving surface of the light body 44 is continuously provided.
  • FPC flexible printed circuit
  • a plurality of (4) liquid crystal light sources LP are mounted on the first substrate portion 481 at regular intervals along the longitudinal direction, and a plurality of display panel light sources LD are also displayed on the second substrate portion 482 (displays). 4 in total according to the number of light guides 44 for the plate), and are mounted at intervals along the longitudinal direction, and the light emission axes of the light sources LP and LD are positioned on the side end surfaces of the light guides 43 and 44.
  • the light guides 43 and 44 are directed to the respective light receiving surfaces so that the light of the light sources LP and LD is incident on the edge light system from the respective light receiving surfaces located on the side end surfaces, and surface emission is performed. It has become.
  • Both the liquid crystal light source LP and the display panel light source LD are made of light emitting diodes.
  • the first intermediate frame 42 is made of, for example, white synthetic resin, and includes a storage portion 421 that accommodates the liquid crystal light guide 43 and a pair of light guide support portions 422 that support the display panel light guide 44 from behind.
  • a partition wall 423 that partitions the light guides 43 and 44 is formed between the storage unit 421 and the light guide supporter 422, and the light guides 43 are formed on the partition wall 423.
  • 44 are formed with a plurality of cutout portions 424 for passing through connecting portions described later.
  • the liquid crystal light guide 43 is formed of a transparent synthetic resin as a rectangular plate whose front thickness is reduced as the distance from the liquid crystal light source LP increases, and a liquid crystal light guide 43 is disposed on the side end surface facing the liquid crystal light source LP.
  • a light receiving surface 431 that receives light from the light source LP is formed, and a light emitting surface 432 that emits light from the light receiving surface 431 toward the liquid crystal panel 46 is formed on the front surface facing the liquid crystal panel 46.
  • the liquid crystal light guide 43 has a square shape when viewed from the front because the liquid crystal light guide 43 corresponds to the shape of the liquid crystal panel 46.
  • the light guide for display panel 44 is formed of translucent synthetic resin into a rectangular parallelepiped (bar-shaped body) having a rectangular cross section extending along the long side of the light guide for liquid crystal 43 having a rectangular front view.
  • Two liquid crystal light guides 43 are provided adjacent to both sides.
  • Each of the display panel light guides 44 is formed continuously (integrally) with the liquid crystal light guide 43 through the connecting portion 49, and is formed on the side end face facing the display panel light source LD.
  • a light receiving surface 441 for receiving the light an emission surface 442 for emitting the light introduced from the light receiving surface 441 to the side opposite to the liquid crystal light guide 43 side, and a light introduced from the light receiving surface 441 on the emission surface 442.
  • An exit surface 443 that emits light in a specific direction slightly different from the exit direction, and a substantially saw-tooth shape that faces the exit surface 442 in a direction adjacent to the liquid crystal light guide 43 and reflects light from the light receiving surface 441 to the exit surface 442 side.
  • the reflection portion 444 and the reflection groove 445 that reflects the light from the light receiving surface 441 toward the emission surface 443 are formed.
  • the second intermediate frame 45 is made of, for example, white synthetic resin.
  • the storage unit 451 that stores the liquid crystal light guide 43 together with the storage unit 421 of the first intermediate frame 42 and the display plate light guide 44 are arranged on the front surface.
  • a pair of cover portions 452 covering from the side and a holding portion 453 for holding the liquid crystal panel 46 from the back are formed.
  • the cover portion 452 is formed with a light transmitting hole 454 for transmitting light from the light guide 44 for the display plate toward an overlapping portion described later.
  • the liquid crystal panel 46 is composed of, for example, a TFT (thin film transistor) type liquid crystal panel, and displays various vehicle information, images, and the like.
  • TFT thin film transistor
  • the front frame 47 is formed by forming a bottom plate portion (front plate portion) 471 and a side wall portion 472 surrounding the bottom plate portion 411 by performing a bending process after pressing a metal plate, for example.
  • the bottom plate portion 471 has a window portion 47 through which the liquid crystal panel 46 can be seen.
  • the frame 47 includes a first intermediate frame 42 in front of the rear frame 41, light guides 43 and 44 in front of the first intermediate frame 42, and a second intermediate frame 45 in front of each 43 and 44.
  • the liquid crystal panel 46 and the liquid crystal panel 46 are sequentially assembled in a stacked state by sequentially assembling the liquid crystal panel 46 in front of the second intermediate frame 45 and the front frame 47 in front of the liquid crystal panel 46.
  • Support By combining the light source substrate 48 that constitutes an illumination unit 4 formed by integrally.
  • the rear frame 41, the first intermediate frame 42, the second intermediate frame 45, and the front frame 47 are composed of the liquid crystal panel 46, the display panel light guide 44, and the liquid crystal light guide 43.
  • the illumination unit 4 that is a predetermined member that couples the light source substrate 48 and is integrated through the predetermined member in this manner is in an assembled state, and the emission surfaces 442 and 443 of the light guide 44 for the display plate. Is exposed from between the light guide support part 422 and the cover part 452.
  • the light sources LP and LD sides are located below, the emission surfaces 442 and 443 are exposed in the left-right direction, the liquid crystal panel 46 faces forward, and the back frame 41 is Screwed to the center of the circuit board 2 so as to face the back direction.
  • the up / down / left / right direction and the front / rear direction correspond to the directions when the vehicle is viewed from the front in the actual use state.
  • the illumination unit 4 When the support member 3 is assembled on the circuit board 2, the illumination unit 4 has the display surface of the liquid crystal panel 46 facing the first cutout portion 34, and the emission surfaces 442 and 443 on the second cutout portion 35. Come on.
  • the panel member 5 is formed by performing screen printing or the like on a light-transmitting synthetic resin plate having a shape corresponding to the outer shape of the support member 3.
  • the overall background color is black.
  • the second support portion 33 of the support member 3 corresponding to the first display plate 6 is inserted into the five portions of the panel member corresponding to the first display plate 6 so as to protrude forward from the panel member 5.
  • Two opening holes 51 are formed.
  • the first display board 6 is formed by performing screen printing or the like on a disc-shaped translucent synthetic resin plate, and two first display boards 6 are provided corresponding to the opening holes 51 of the panel member 5. These first display boards 6 have, for example, a black background color as a whole.
  • the first display board 6 constituting the main instrument comprising the speedometer SP corresponding to the second pointer 8 from the left in FIG.
  • a translucent indicator portion (not shown) made up of numerals for speedometers is formed, and a first instrument constituting a main meter comprising an engine tachometer TA corresponding to the second pointer 8 from the right in FIG.
  • the display board 6 is formed with a translucent indicator portion (not shown) made up of numbers for an engine tachometer.
  • an annular translucent portion (not shown) is formed on the outer peripheral portion of the first display plate 6, and light is transmitted to the second display plate 7 through the annular translucent portion.
  • the second display board 7 is formed by drawing a translucent synthetic resin plate on which a translucent indicator portion made of a scale for a speedometer is printed in a background having a predetermined color, thereby producing a radial cross section.
  • the shape is formed as an annular member having a mountain shape, and is arranged so as to cover the outer wall side portion of the second support portion 33 of the support member 3 and the outer peripheral edge of the first display panel 6.
  • the indicator portion of the second display board 7 is illuminated via the annular light transmitting portion of the first display board 6. 1 to 3, the second display board 7 is provided only for the speedometer SP, and the second display board 7 provided on the engine tachometer TA side is omitted.
  • Each pointer 8 is composed of an indicator portion 81 made of, for example, a light-transmitting synthetic resin, and a cap 82 that covers the rotation center portion of the indicator portion 81, and is connected to the pointer shaft S of the drive main body M. 1 is rotated around the axis according to the measurement amount.
  • the pointers 8 constituting the speedometer SP and the engine tachometer TA are different from the pointers 8 for the other auxiliary instruments, and as shown in FIG. And a pointer board 83 on which the light source LN is mounted.
  • the pointer light source LN is made of, for example, a light emitting diode, and is mounted on the pointer substrate 83 so that the light emitting portion faces the pointing portion 81 side.
  • the pointer substrate 83 has a connection pattern (not shown) connected to the pointer light source LN and a coil pattern (electric power generation) that generates electric power in accordance with electromagnetic induction action (electromagnetic field of the magnetic field generating means) with an electromagnetic field generating means described later.
  • a copper foil circuit pattern is formed.
  • the power generation means may be a coil bobbin wound with a conducting wire.
  • the coil pattern 84 is spirally formed on the back surface of the pointer substrate 83 (on the electromagnetic field generating means side) so as to face the electromagnetic field generating means, and is connected to the pointer light source LN through a through hole. .
  • the pedestal member 9 is made of a synthetic resin having a light-shielding property or a light-transmitting property, and as shown in detail in FIG. 7, a support portion 91 parallel to the rotation plane of the pointer 8 and extends from the support portion 91 to the circuit board 2 side. And a side wall portion 92 which is a leg portion.
  • the support portion 91 is formed in a circular shape when viewed from the front facing the rotation center of the pointer 8, the surface facing the pointer 8 extends in parallel with the rotation plane of the pointer 8, and further, the pointer 8 and the pointer shaft S are at the center.
  • 93 is formed with a hole that enables connection with the.
  • the supporting portion 91 supports the electromagnetic field generating means EM from behind in order to bring the electromagnetic field generating means EM that generates an electromagnetic field by supplying power closer to the pointer 8 than the substrate surface of the circuit board 2.
  • the electromagnetic field generating means EM is composed of a coil-like (spiral) wiring pattern printed on a film-like substrate made of, for example, FPC (flexible printed circuit) (not shown). The center of the coiled wiring pattern is close to the pointer shaft S position.
  • the electromagnetic field generating means EM may be a coil bobbin wound with a conducting wire.
  • the pointer 8 When the electromagnetic field generated by the electromagnetic field generating means EM generates electric power in the coil pattern 84 and causes the pointer light source LN to emit light by electromagnetic induction, the pointer 8 is provided with electric power generating means described later.
  • the power generation means receives the electromagnetic field of the electromagnetic field generation means EM and generates power to be supplied to a pointer light source which will be described later.
  • the end of the film-like substrate is routed to the substrate surface of the circuit board 2 through the side wall 92 and connected to the circuit pattern through the connector C mounted on the circuit board 2.
  • the side wall portion 92 is formed in a substantially cylindrical shape, but a light transmitting portion 94 for passing light from the illumination unit 4 side to the side opposite to the illumination unit 4 side is formed at an appropriate position. .
  • the circuit board 2 is housed and fixed from the opening side of the back cover 1.
  • the illumination unit 4, the base member 9, and the electromagnetic field generation means EM are mounted on the circuit board 2 in advance.
  • each pointer 8 is press-fitted into the pointer shaft S from the panel member 5 and the first display plate 6 to complete.
  • the display panel light source LD incorporated in the illumination unit 4 emits light
  • the light enters the display panel light guide 44 through the light receiving surface 441.
  • the light incident on the display panel light guide 44 is internally guided, reflected through the reflection portion 444 and the reflection groove 445, and emitted from the emission surfaces 442 and 443.
  • the emitted light is irradiated through the second cutout portion 35 of the support member 3 into the space formed between the reflection plate portion 36 and the first display plate 6, and the reflection plate portion 36 and the first display plate.
  • the indicator portion of the first display plate 6 is illuminated from behind
  • the second display plate 7 of the second display plate 7 is connected via the annular light-transmitting portion of the first display plate 6.
  • the indicator part is illuminated from behind.
  • the pedestal member 9 is disposed around the pointer shaft S.
  • the side wall portion 92 of the pedestal member 9 allows light from the illumination unit 4 side to pass through the side opposite to the illumination unit 4 side. Since the translucent portion 94 is formed, the base member 9 is configured not to block the progress of light. Further, the emission direction of the light emitted from the emission surface 443 is adjusted to a specific direction slightly different from the emission direction of the emission surface 442, and the illumination unit 4 (the emission surface 442) with the pedestal member 9 interposed therebetween. Consideration is made to eliminate the lack of brightness on the opposite side.
  • the liquid crystal panel 46 is arranged so that a part of the indicator portion of the first display panel 6 overlaps a part of the liquid crystal panel 46 when viewed from the viewing direction.
  • an overlapping portion B is formed on the first display plate 6, and the indicator portion region of the display plate 6 located in the overlapping portion B overlaps the liquid crystal panel 46.
  • the first display plate 6 is supported by the second support portion 33 (of the support member 3) (part of the support member 3), although it is difficult for light to reach due to being blocked by the panel 46.
  • a space K is formed between the overlapping portion B and the liquid crystal panel 46 region, and the light of the display panel light guide 44 is introduced into the space K through the light transmitting hole 454 of the illumination unit 4.
  • the indicator light region in the overlapping portion B is illuminated with the introduced light. .
  • the overlapping portion B is illuminated with the light of the display panel light guide 44 introduced into the space K.
  • the light transmitting hole 454 is provided on the light transmitting hole 454.
  • a reflective member (not shown) that reflects the passed light to the overlapping portion B may be provided.
  • the display panel light guide 44 may be extended to the overlapping portion B, and the overlapping portion B may be illuminated by this extending portion (not shown).
  • An electromagnetic field is generated by supplying electric power to the electromagnetic field generating means EM, and electric power is generated in the coil pattern 84 due to electromagnetic induction action by the electromagnetic field.
  • Incident light 81 emits light.
  • a display panel light source LD that illuminates the first display panel 6, a display panel light guide 44 that guides the light from the display panel light source LD to the first display panel 6, and a liquid crystal panel 46 that displays various types of information.
  • a liquid crystal light source LP that illuminates the liquid crystal panel 46, a liquid crystal light guide 43 that guides the light of the liquid crystal light source LP to the liquid crystal panel 46, and the first display panel 6 and the liquid crystal panel 46.
  • the circuit board 2 to which the main body M and the liquid crystal panel 46 are electrically connected is provided, and the light from the light source LD for the display plate and the light source LP for the liquid crystal LP are added to the light guide 44 for the display plate and the light guide 43 for the liquid crystal, respectively.
  • 43 is a measuring device in which a light source LD for display plate and a light source LP for liquid crystal LP are arranged opposite to each light receiving surface 413, 441 formed on each side end surface of the 43.
  • a light source substrate 48 continuously having a first substrate portion 481 and a second substrate portion 482 facing the light receiving surface 441 of the light guide for display panel is provided, and the first and second substrate portions 481 and 482 are provided on the first and second substrate portions 481 and 482, respectively.
  • the present embodiment has a metal back frame (base member) 41 that supports at least the liquid crystal panel 46 and the liquid crystal light guide 43, and a light source substrate 48 is attached to the back frame 41.
  • a dedicated component for attaching 48 is not necessary, and the heat radiation member can be made common by performing heat radiation of the light source LD for the display plate and the light source LP for the liquid crystal by the rear frame 41, so that further cost reduction can be achieved.
  • the display panel light guide 44 and the liquid crystal light guide 43 are integrated via the connecting portion 49, thereby reducing the number of parts and further reducing the cost.
  • the liquid crystal panel 46, the display panel light guide body 44, the liquid crystal light guide body 43, and the light source substrate 48 can be unitized by being coupled through a predetermined member including the frame 45 and the front frame 47. This facilitates assembly and further cost reduction.
  • the overlapping portion B is formed by arranging the first display panel 6 so that a part of the indicator portion overlaps the liquid crystal panel 46 when viewed from the viewing direction.
  • the indicator portion in the overlapping portion B can be illuminated without providing a dedicated illumination means, and the cost can be reduced.
  • the shape of the light guide 44 for the display panel is different from that of the first embodiment.
  • the display panel light guide 44 is formed in, for example, a D-shape, and the light source substrate 48 and the side wall portion 413 are arranged in the left-right direction in the drawing so as to correspond to the D-shaped display panel light guide 44. It is formed to extend.
  • the shape of the display panel light guide 44 is arbitrary.
  • two display panel light guides 44 are provided, but the number of display panel light guides 44 is arbitrary.
  • the light source substrate 48 is mounted with the display plate light source LD and the liquid crystal light source LP, respectively, but illuminates the pointer 8 and other light emitting display devices (for example, an alarm / notification indicator).
  • a light source may be implemented.
  • an extension for mounting a light source for illuminating the pointer 8 or another light emitting display device (for example, an alarm / notification indicator) may be provided on the light source substrate 48.
  • the present invention may be applied not only to vehicles such as automobiles and motorcycles, but also to instrument devices mounted on, for example, various ships, agricultural machines, and construction machines.

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Abstract

Disclosed is an indicator device to be mounted on a vehicle or motorcycle, etc., and which allows reduction of costs. The indicator device is provided with a drive body (M), an indicator needle (8) connected to the drive body (M), a first display plate (display board) (6) having an indicator unit, a display plate light source (LD), a display plate lightguide (44), a liquid crystal panel (46), a liquid crystal light source (LP), a liquid crystal lightguide (43), and a circuit substrate (2). The indicator device is arranged such that light from the light sources (LD, LP) is incident to the lightguides (44, 43) by means of the Edge Light System, and the indicator device is provided with a light source substrate (48) having in sequence a first substrate unit (481) and a second substrate unit (482) mounted with the light sources (LD) and (LP), respectively.

Description

計器装置Instrument device
　本発明は、例えば自動車やオートバイに搭載される計器装置に関し、特に車速やエンジン回転数等の計測量を指示する指針式計器と、様々な情報を表示する液晶表示器とを組み込んでなるコンビネーションメータと称される計器装置に関する。 The present invention relates to an instrument device mounted on, for example, an automobile or a motorcycle, and in particular, a combination meter that incorporates a pointer-type instrument that indicates a measurement amount such as a vehicle speed and an engine speed, and a liquid crystal display that displays various information. It is related with the instrument apparatus called.
　この種の計器装置として例えば下記特許文献１に記載されたものが知られている。この計器装置は、ステッピングモータ等の駆動本体と、この駆動本体に連結された指針と、この指針によって指示される指標部を有する表示板と、この表示板の背後に配置された表示板用導光体と、様々な情報を表示する液晶パネルと、この液晶パネルの背後に配置された液晶用導光体と、少なくとも駆動本体と液晶パネルとが電気接続されると共に表示板用導光体と液晶用導光体とを通じて表示板と液晶パネルとを照明するための例えば発光ダイオードからなる光源が実装された回路基板とを備えている。 As this type of instrument device, for example, the one described in Patent Document 1 below is known. The instrument device includes a driving body such as a stepping motor, a pointer connected to the driving body, a display board having an indicator portion indicated by the pointer, and a display board guide disposed behind the display board. A light body, a liquid crystal panel for displaying various information, a liquid crystal light guide disposed behind the liquid crystal panel, and at least a drive body and a liquid crystal panel are electrically connected and a light guide for display plate And a circuit board on which a light source made of, for example, a light emitting diode is mounted to illuminate the display panel and the liquid crystal panel through the liquid crystal light guide.
　前記特許文献１記載の計器装置は、回路基板上の各光源の光を表示板用導光体及び液晶用導光体に入射させて表示板と液晶パネルの双方を照明するようにしているが、表示板用導光体及び液晶用導光体の厚み方向に光源を配置する構成であるため、照明ムラを考慮して光源の数を増やす必要がある他、各導光体と光源との位置関係から導光体の厚み方向の寸法が大きくなりやすいといった事情があった。 In the instrument device described in Patent Document 1, light from each light source on a circuit board is incident on a light guide for a display plate and a light guide for a liquid crystal to illuminate both the display plate and the liquid crystal panel. Since the light source is arranged in the thickness direction of the light guide for the display panel and the light guide for the liquid crystal, it is necessary to increase the number of light sources in consideration of illumination unevenness. Due to the positional relationship, there has been a situation that the dimension of the light guide in the thickness direction tends to be large.
　そこで、下記特許文献２，３に記載されているようにエッヂライト（サイドライト）方式の照明手法にて液晶パネルや表示板を照明するものが知られている。 下記特許文献２記載の計器装置は、液晶パネルをエッジライト方式にて照明するもので、利用者の視認方向を液晶用導光体の厚み方向としたとき、厚み方向とは直交する液晶用導光体の側端面に光源を配置し、当該側端面から光源の光を導入し面発光する構成となっている。また下記特許文献３記載の計器装置は、表示板をエッジライト方式にて照明するもので、利用者の視認方向を表示板用導光体の厚み方向としたとき、厚み方向とは直交する表示板用導光体の側端面に光源を配置し、当該側端面から光源の光を導入し面発光する構成となっている。 Therefore, as disclosed in Patent Documents 2 and 3 below, those that illuminate a liquid crystal panel or a display plate by an edge light (side light) illumination method are known. The instrument device described in Patent Document 2 below illuminates a liquid crystal panel by an edge light method. When the viewing direction of the user is the thickness direction of the light guide for liquid crystal, the liquid crystal guide is orthogonal to the thickness direction. A light source is arranged on the side end surface of the light body, and light from the light source is introduced from the side end surface to emit light. In addition, the instrument device described in Patent Document 3 below illuminates the display board by an edge light method, and when the viewing direction of the user is the thickness direction of the light guide for the display board, the display is orthogonal to the thickness direction. A light source is arranged on the side end face of the light guide for plate, and light from the light source is introduced from the side end face to emit light.
特開平１１－１６０１１３号公報JP-A-11-160113 特開２００６－１２６０７１号公報JP 2006-126071 特開２００７－１３９７９１号公報JP 2007-139791 A
　しかしながら、前記特許文献２，３に基づいて指針式計器と液晶表示器の双方を単にエッヂライト照明するだけでは、液晶用光源を実装する回路基板と、表示板用光源を実装する回路基板とからなる複数の回路基板に加え、場合によっては光源の放熱を行う放熱部材も複数必要となり、コストが高くなる。特に近年、液晶パネルに駆動回路と駆動用プリント基板、バックライト等を取り付けてユニット化した市販の液晶モジュールを使用するケースが増加しており、このような液晶モジュールを使用する場合は、液晶モジュール自体に液晶用光源が組み込まれるため、表示板用光源のための専用の回路基板が必要である。 However, simply illuminating both the pointer-type instrument and the liquid crystal display based on the above-mentioned Patent Documents 2 and 3 from the circuit board on which the liquid crystal light source is mounted and the circuit board on which the light source for the display board is mounted. In addition to the plurality of circuit boards, a plurality of heat dissipating members that dissipate the light source may be required depending on the case, which increases the cost. In particular, in recent years, there are increasing cases of using commercially available liquid crystal modules that are unitized by attaching a drive circuit, a printed circuit board for driving, a backlight, etc. to the liquid crystal panel. When using such a liquid crystal module, the liquid crystal module Since the liquid crystal light source is incorporated in itself, a dedicated circuit board for the display panel light source is required.
　そこで、本発明は前述した問題点に着目し、コストダウンを達成できる計器装置を提供することを目的とする。 Therefore, the present invention pays attention to the above-mentioned problems and aims to provide an instrument device that can achieve cost reduction.
　本発明は、駆動本体と、この駆動本体に連結された指針と、この指針によって指示される指標部を有する表示板と、この表示板を照明する表示板用光源と、この表示板用光源の光を前記表示板に導く表示板用導光体と、各種情報を表示する液晶パネルと、この液晶パネルを照明する液晶用光源と、この液晶用光源の光を前記液晶パネルに導く液晶用導光体と、前記表示板及び前記液晶パネルの背後で前記駆動本体と前記液晶パネルとが電気接続される回路基板とを備え、表示板用導光体と前記液晶用導光体のそれぞれに前記表示板用光源と前記液晶用光源の光がエッヂライト方式にて入射するように表示板用導光体と前記液晶用導光体のそれぞれの側端面に形成した各受光面に前記表示板用光源と前記液晶用光源を対向配置してなる計器装置において、前記液晶用導光体の前記受光面と対向する第１の基板部と前記表示板用導光体の前記受光面と対向する第２の基板部とを連続して有する光源基板を設け、前記各基板部に前記表示板用光源と前記液晶用光源をそれぞれ実装してなることを特徴とする。
　このように構成したことにより、前記表示板用光源を実装する光源基板と前記液晶用光源を実装する光源基板を共通化できるため、光源基板が一枚で済み、コストダウンを達成することができる。 The present invention relates to a drive main body, a pointer connected to the drive main body, a display board having an indicator portion indicated by the pointer, a light source for a display board that illuminates the display board, and a light source for the display board A light guide for a display plate that guides light to the display plate, a liquid crystal panel that displays various information, a light source for liquid crystal that illuminates the liquid crystal panel, and a liquid crystal guide that guides light from the light source for liquid crystal to the liquid crystal panel. A light body, and a circuit board electrically connected to the drive body and the liquid crystal panel behind the display plate and the liquid crystal panel, and the light guide for the display plate and the light guide for the liquid crystal, respectively. The light source for the display plate and the light source for the liquid crystal are incident on each side end surface of the light guide for the display plate and the light guide for the liquid crystal so that light of the light source for the liquid crystal is incident on the edge light system. Instrument device comprising a light source and a liquid crystal light source arranged opposite to each other A light source substrate having a first substrate portion facing the light receiving surface of the light guide for liquid crystal and a second substrate portion facing the light receiving surface of the light guide for display plate in succession. The display board light source and the liquid crystal light source are respectively mounted on each of the substrate portions.
With this configuration, the light source substrate on which the display plate light source is mounted and the light source substrate on which the liquid crystal light source is mounted can be shared, so that only one light source substrate is required, and cost reduction can be achieved. .
　また本発明は、少なくとも前記液晶パネル及び前記液晶用導光体を支持する金属製のベース部材を有し、このベース部材に前記光源基板を取り付けてなることを特徴とする。
　このように構成したことにより、光源基板を取り付けるための専用部品が不要となり、また前記表示板用光源と前記液晶用光源の放熱をベース部材で行うことで放熱部材を共通化できるため、更なるコスト削減が可能となる。 Further, the present invention is characterized in that it has a metal base member that supports at least the liquid crystal panel and the light guide for liquid crystal, and the light source substrate is attached to the base member.
This configuration eliminates the need for a dedicated component for mounting the light source substrate, and allows the heat radiation member to be shared by performing heat radiation of the display plate light source and the liquid crystal light source with a base member. Cost reduction is possible.
　また本発明は、前記表示板用導光体と前記液晶用導光体とを連結部を介して一体化してなることを特徴とする。
　このように構成したことにより、部品点数を削減し、更なるコスト削減が可能となる。 Further, the present invention is characterized in that the light guide for display panel and the light guide for liquid crystal are integrated via a connecting portion.
With this configuration, the number of parts can be reduced, and further cost reduction can be achieved.
　また本発明は、液晶パネルと、前記表示板用導光体と、前記液晶用導光体と、前記光源基板とを所定部材を通じて結合してなることを特徴とする。
　このように構成したことにより、組付けを容易とし、更なるコスト削減が可能となる。 Further, the invention is characterized in that a liquid crystal panel, the display plate light guide, the liquid crystal light guide, and the light source substrate are combined through a predetermined member.
With such a configuration, assembly is facilitated and further cost reduction is possible.
　本発明によれば、コストダウンを達成できる計器装置を提供することができる。 According to the present invention, an instrument device that can achieve cost reduction can be provided.
本発明の第１の実施形態による計器装置を前面側から見た時の斜視図。The perspective view when the instrument apparatus by the 1st Embodiment of this invention is seen from the front side. 同計器装置を前面側から見たときの分解斜視図。The disassembled perspective view when the same instrument apparatus is seen from the front side. 同計器装置を背面側から見たときの分解斜視図。The disassembled perspective view when the same instrument apparatus is seen from the back side. 同計器装置に組み込まれる照明ユニットを前方から見たときの斜視図。The perspective view when the illumination unit built in the instrument apparatus is seen from the front. 同照明ユニットの分解斜視図。The exploded perspective view of the lighting unit. 図１のＡ－Ａ断面図（ハッチング省略）。FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 (hatching is omitted). 同計器装置に組み込まれる台座部材の斜視図。The perspective view of the base member integrated in the measuring instrument apparatus. 本発明の第２の実施形態による照明ユニットの概略正面図。The schematic front view of the illumination unit by the 2nd Embodiment of this invention.
（第１の実施形態）
　本発明の第１の実施形態による計器装置は、図１～図３に示すように、背面カバー１と、回路基板２と、支持部材３と、照明ユニット４と、パネル部材５と、第１の表示板６と、第２の表示板７と、指針８とを備えている。 (First embodiment)
As shown in FIGS. 1 to 3, the instrument device according to the first embodiment of the present invention includes a back cover 1, a circuit board 2, a support member 3, a lighting unit 4, a panel member 5, and a first member. The display board 6, the second display board 7, and the pointer 8 are provided.
　背面カバー１は、例えば遮光性もしくは透光性を有する合成樹脂によって前方が開口する有底枠体に形成され、この実施形態では回路基板２、支持部材３と、照明ユニット４、パネル部材５、第１の表示板６、第２の表示板７を収納している。 The back cover 1 is formed in a bottomed frame body whose front is opened with, for example, a light-blocking or translucent synthetic resin. In this embodiment, the circuit board 2, the support member 3, the lighting unit 4, the panel member 5, The first display board 6 and the second display board 7 are accommodated.
　なおパネル部材５の前面には、化粧パネルや透明カバーが配置されるが、これらは図示省略されている。 Note that a decorative panel and a transparent cover are arranged on the front surface of the panel member 5, but these are not shown.
　回路基板２は、例えばガラスエポキシ系材料または紙フェノールからなる硬質の絶縁部材を基材とするもので、図示しない回路パターンが印刷形成されている。この回路基板には、図示省略した各種インジケータ類や後述する補助計器の指針８や後述する指標部を照明する発光ダイオードＬ、各用途に応じた複数個の駆動本体Ｍ、後に詳述する照明ユニット４、後述する台座部材９等が装着固定されている。 The circuit board 2 is based on a hard insulating member made of, for example, a glass epoxy material or paper phenol, and a circuit pattern (not shown) is printed on the circuit board 2. This circuit board includes various indicators not shown, light-emitting diodes L that illuminate pointers 8 of auxiliary instruments to be described later and indicator parts to be described later, a plurality of drive bodies M according to each application, and an illumination unit that will be described in detail later. 4. A pedestal member 9 and the like which will be described later are mounted and fixed.
　駆動本体Ｍは、例えば指針軸Ｓを有するステッピングモータが適用され、回路基板２の背面側に本体部が装着され、指針軸Ｓは回路基板２を貫通して前方に突出（貫通）している。本実施形態では計器（指針８）の数に応じて４個の駆動本体Ｍが用いられている。 For example, a stepping motor having a pointer shaft S is applied to the drive main body M, a main body is mounted on the back side of the circuit board 2, and the pointer shaft S protrudes forward (penetrates) through the circuit board 2. . In the present embodiment, four drive bodies M are used according to the number of meters (pointers 8).
　支持部材３は、例えば乳白色の合成樹脂からなり、回路基板２の前面に配置され、回路基板２の外形に沿った周壁３１と、パネル部材５を背後から支持する第１の支持部３２と、第１の表示板６を背後から支持する第２の支持部３３と、照明ユニット４に対応した第１の切欠部３４と、照明ユニット４の後述する出射面が臨む第２の切欠部３５と、この第２の切欠部３５を通じて取り入れた光を第１の表示板６側に反射する反射板部（反射部材）３６とを有している。 The support member 3 is made of, for example, milky white synthetic resin, and is disposed on the front surface of the circuit board 2, and includes a peripheral wall 31 along the outer shape of the circuit board 2, a first support portion 32 that supports the panel member 5 from behind, A second support 33 for supporting the first display panel 6 from behind, a first notch 34 corresponding to the illumination unit 4, and a second notch 35 facing an emission surface (to be described later) of the illumination unit 4; In addition, a reflection plate portion (reflection member) 36 that reflects the light taken in through the second cutout portion 35 to the first display plate 6 side is provided.
　第２の支持部３３は、第１の表示板６の外形に沿った円筒形に形成され、その一部が照明ユニット４の前面を横切るように形成される。 The second support portion 33 is formed in a cylindrical shape along the outer shape of the first display panel 6, and a part thereof is formed so as to cross the front surface of the lighting unit 4.
　反射板部３６は、図６に示すように、照明ユニット４から遠ざかるに従って第１の表示板６に近づく傾斜面として形成されている。 As shown in FIG. 6, the reflection plate portion 36 is formed as an inclined surface that approaches the first display plate 6 as the distance from the illumination unit 4 increases.
　照明ユニット４は、図４，図５に示すように、背面フレーム（ベース部材）４１と、第１の中間フレーム４２と、液晶用導光体４３と、文字板用導光体４４と、第２の中間フレーム４５と、液晶パネル４６と、前面フレーム４７とからなる。 4 and 5, the illumination unit 4 includes a back frame (base member) 41, a first intermediate frame 42, a liquid crystal light guide 43, a dial light guide 44, 2 intermediate frames 45, a liquid crystal panel 46, and a front frame 47.
　背面フレーム４１は、例えば金属板をプレス抜きした後に折り曲げ加工を施すことにより、底板部４１１と、この底板部４１１の周囲を取り巻く側壁部４１２，４１３とを形成してなるもので、照明ユニット４のシャーシ部材として、第１の中間フレーム４２と、液晶用導光体４３と、表示板用導光体４４と、第２の中間フレーム４５と、液晶パネル４６と、前面フレーム４７とを支持する他、後述する液晶用光源と表示板用光源の熱を放熱する放熱部材や各種ノイズ、静電気等を遮断するシールド部材としても機能する。 The back frame 41 is formed by forming a bottom plate portion 411 and side wall portions 412 and 413 surrounding the periphery of the bottom plate portion 411 by, for example, performing a bending process after pressing a metal plate. As the chassis member, the first intermediate frame 42, the liquid crystal light guide 43, the display panel light guide 44, the second intermediate frame 45, the liquid crystal panel 46, and the front frame 47 are supported. In addition, it also functions as a heat radiating member that radiates heat from a liquid crystal light source and a display panel light source, which will be described later, and a shield member that blocks various noises, static electricity, and the like.
　底壁部４１１には、表示板用導光体４４に対応した幅広部が形成されている。また側壁部４１２，４１３のうち、各導光体４３，４４の後述する受光面に対応する側壁部４１３は、光源基板４８を取り付けるための取付部として設けられ、前記受光面位置に応じて屈曲形成されている。 A wide portion corresponding to the display panel light guide 44 is formed on the bottom wall portion 411. Of the side wall portions 412 and 413, a side wall portion 413 corresponding to a light receiving surface described later of each of the light guides 43 and 44 is provided as a mounting portion for mounting the light source substrate 48, and is bent according to the position of the light receiving surface. Is formed.
　光源基板４８は、側壁部４１３に沿って細長く伸びる例えばＦＰＣ（フレキシブル・プリント・サーキット）からなり、液晶用導光体４３の前記受光面と対向する第１の基板部４８１と、表示板用導光体４４の前記受光面と対向する第２の基板部４８２とを連続して有する。 The light source substrate 48 is formed of, for example, an FPC (flexible printed circuit) that is elongated along the side wall portion 413, and includes a first substrate portion 481 facing the light receiving surface of the liquid crystal light guide 43, and a display plate guide. A second substrate portion 482 facing the light receiving surface of the light body 44 is continuously provided.
　第１の基板部４８１には、液晶用光源ＬＰが複数（４）個、長手方向に沿って等間隔に実装され、また第２の基板部４８２にも表示板用光源ＬＤが複数個（表示板用導光体４４の数に応じて計４個）、長手方向に沿って間隔を空けて実装され、各光源ＬＰ，ＬＤの発光軸は、各導光体４３，４４の側端面に位置する前記各受光面に向けられ、これにより各導光体４３，４４は側端面に位置する前記各受光面から各光源ＬＰ，ＬＤの光をエッヂライト方式にて入射させ、面発光する構成となっている。液晶用光源ＬＰと表示板用光源ＬＤは共に発光ダイオードからなる。 A plurality of (4) liquid crystal light sources LP are mounted on the first substrate portion 481 at regular intervals along the longitudinal direction, and a plurality of display panel light sources LD are also displayed on the second substrate portion 482 (displays). 4 in total according to the number of light guides 44 for the plate), and are mounted at intervals along the longitudinal direction, and the light emission axes of the light sources LP and LD are positioned on the side end surfaces of the light guides 43 and 44. The light guides 43 and 44 are directed to the respective light receiving surfaces so that the light of the light sources LP and LD is incident on the edge light system from the respective light receiving surfaces located on the side end surfaces, and surface emission is performed. It has become. Both the liquid crystal light source LP and the display panel light source LD are made of light emitting diodes.
　第１の中間フレーム４２は、例えば白色の合成樹脂からなり、液晶用導光体４３を収容する収納部４２１と、表示板用導光体４４を背後から支持する一対の導光体支持部４２２とを有し、収納部４２１と導光体支持部４２２との間には、各導光体４３，４４どうしを仕切る仕切壁４２３が形成され、この仕切壁４２３には、各導光体４３，４４を連結する後述する連結部を通すための切欠部４２４が複数形成されている。 The first intermediate frame 42 is made of, for example, white synthetic resin, and includes a storage portion 421 that accommodates the liquid crystal light guide 43 and a pair of light guide support portions 422 that support the display panel light guide 44 from behind. A partition wall 423 that partitions the light guides 43 and 44 is formed between the storage unit 421 and the light guide supporter 422, and the light guides 43 are formed on the partition wall 423. , 44 are formed with a plurality of cutout portions 424 for passing through connecting portions described later.
　液晶用導光体４３は、透光性合成樹脂によって、液晶用光源ＬＰから遠ざかるに従って厚みが薄くなる正面視長方形の板材として形成され、その液晶用光源ＬＰと対向する側端面には、液晶用光源ＬＰからの光を受光する受光面４３１が、液晶パネル４６に対向する前面部は受光面４３１からの光を液晶パネル４６側に出射する出射面４３２がそれぞれ形成されている。なおこの場合、液晶用導光体４３を正面視四角形状としたのは、液晶用導光体４３を液晶パネル４６の形状に対応させたものである。 The liquid crystal light guide 43 is formed of a transparent synthetic resin as a rectangular plate whose front thickness is reduced as the distance from the liquid crystal light source LP increases, and a liquid crystal light guide 43 is disposed on the side end surface facing the liquid crystal light source LP. A light receiving surface 431 that receives light from the light source LP is formed, and a light emitting surface 432 that emits light from the light receiving surface 431 toward the liquid crystal panel 46 is formed on the front surface facing the liquid crystal panel 46. In this case, the liquid crystal light guide 43 has a square shape when viewed from the front because the liquid crystal light guide 43 corresponds to the shape of the liquid crystal panel 46.
　表示板用導光体４４は、透光性合成樹脂によって、その主要部が正面視長方形の液晶用導光体４３の長辺に沿って伸びる横断面四角形状の直方体（棒状体）に形成され、液晶用導光体４３の両サイドに隣接して２個、設けられている。 The light guide for display panel 44 is formed of translucent synthetic resin into a rectangular parallelepiped (bar-shaped body) having a rectangular cross section extending along the long side of the light guide for liquid crystal 43 having a rectangular front view. Two liquid crystal light guides 43 are provided adjacent to both sides.
　各表示板用導光体４４は、連結部４９を通じて液晶用導光体４３と連続（一体）形成されており、表示板用光源ＬＤと対向する側端面に形成され、表示板用光源ＬＤからの光を受光する受光面４４１と、この受光面４４１から導入した光を液晶用導光体４３側とは反対側に出射する出射面４４２と、受光面４４１から導入した光を出射面４４２の出射方向とは若干異なる特定方向に出射する出射面４４３と、液晶用導光体４３との隣接方向において出射面４４２に対向し受光面４４１からの光を出射面４４２側に反射する略鋸歯状の反射部４４４と、受光面４４１からの光を出射面４４３側に反射する反射溝４４５とがそれぞれ形成されている。 Each of the display panel light guides 44 is formed continuously (integrally) with the liquid crystal light guide 43 through the connecting portion 49, and is formed on the side end face facing the display panel light source LD. A light receiving surface 441 for receiving the light, an emission surface 442 for emitting the light introduced from the light receiving surface 441 to the side opposite to the liquid crystal light guide 43 side, and a light introduced from the light receiving surface 441 on the emission surface 442. An exit surface 443 that emits light in a specific direction slightly different from the exit direction, and a substantially saw-tooth shape that faces the exit surface 442 in a direction adjacent to the liquid crystal light guide 43 and reflects light from the light receiving surface 441 to the exit surface 442 side. The reflection portion 444 and the reflection groove 445 that reflects the light from the light receiving surface 441 toward the emission surface 443 are formed.
　第２の中間フレーム４５は、例えば白色の合成樹脂からなり、第１の中間フレーム４２の収納部４２１と共に液晶用導光体４３を収容する収納部４５１と、表示板用導光体４４を前面側から覆う一対の覆い部４５２と、液晶パネル４６を背後から保持する保持部４５３とが形成されている。 The second intermediate frame 45 is made of, for example, white synthetic resin. The storage unit 451 that stores the liquid crystal light guide 43 together with the storage unit 421 of the first intermediate frame 42 and the display plate light guide 44 are arranged on the front surface. A pair of cover portions 452 covering from the side and a holding portion 453 for holding the liquid crystal panel 46 from the back are formed.
　覆い部４５２には、表示板用導光体４４の光を後述する重なり部に向けて透過するための透光孔４５４が形成されている。 The cover portion 452 is formed with a light transmitting hole 454 for transmitting light from the light guide 44 for the display plate toward an overlapping portion described later.
　液晶パネル４６は、例えばＴＦＴ（薄膜トランジスタ）型の液晶パネルからなり、様々な車両情報や画像等を表示する。 The liquid crystal panel 46 is composed of, for example, a TFT (thin film transistor) type liquid crystal panel, and displays various vehicle information, images, and the like.
　前面フレーム４７は、例えば金属板をプレス抜きした後に折り曲げ加工を施すことにより、底板部（前板部）４７１と、この底板部４１１の周囲を取り巻く側壁部４７２とを形成してなるもので、この場合、底板部４７１には、液晶パネル４６を透視可能な窓部４７ The front frame 47 is formed by forming a bottom plate portion (front plate portion) 471 and a side wall portion 472 surrounding the bottom plate portion 411 by performing a bending process after pressing a metal plate, for example. In this case, the bottom plate portion 471 has a window portion 47 through which the liquid crystal panel 46 can be seen.
　以上のごとく形成される背面フレーム４１と、第１の中間フレーム４２と、液晶用導光体４３と、文字板用導光体４４と、第２の中間フレーム４５と、液晶パネル４６と、前面フレーム４７は、背面フレーム４１の前方に第１の中間フレーム４２を、第１の中間フレーム４２の前方に各導光体４３，４４を、各４３，４４の前方に第２の中間フレーム４５を、第２の中間フレーム４５の前方に液晶パネル４６を、液晶パネル４６の前方に前面フレーム４７を、それぞれ積層状態に順次組付けることで、液晶パネル４６と、この液晶パネル４６をバックライト照明する液晶用導光体４３と、後述する表示板をバックライト照明する表示板用導光体４４と、各導光体４３，４４に光を供給する各光源ＬＰ，ＬＤと、これら光源ＬＰ，ＬＤを支持する光源基板４８とを結合し一体化してなる照明ユニット４を構成する。 The back frame 41, the first intermediate frame 42, the liquid crystal light guide 43, the dial light guide 44, the second intermediate frame 45, the liquid crystal panel 46, and the front surface formed as described above. The frame 47 includes a first intermediate frame 42 in front of the rear frame 41, light guides 43 and 44 in front of the first intermediate frame 42, and a second intermediate frame 45 in front of each 43 and 44. The liquid crystal panel 46 and the liquid crystal panel 46 are sequentially assembled in a stacked state by sequentially assembling the liquid crystal panel 46 in front of the second intermediate frame 45 and the front frame 47 in front of the liquid crystal panel 46. A liquid crystal light guide 43, a display plate light guide 44 for backlighting a display plate to be described later, each light source LP, LD for supplying light to each light guide 43, 44, and these light sources LP, LD. Support By combining the light source substrate 48 that constitutes an illumination unit 4 formed by integrally.
　この際、背面フレーム４１と、第１の中間フレーム４２と、第２の中間フレーム４５と、前面フレーム４７は、液晶パネル４６と、表示板用導光体４４と、液晶用導光体４３と、光源基板４８を結合する所定部材となると共に、このように前記所定部材を介して一体化してなる照明ユニット４は、その組み立て完成状態で、表示板用導光体４４の出射面４４２，４４３を導光体支持部４２２と覆い部４５２との間から露出させてなる。 At this time, the rear frame 41, the first intermediate frame 42, the second intermediate frame 45, and the front frame 47 are composed of the liquid crystal panel 46, the display panel light guide 44, and the liquid crystal light guide 43. The illumination unit 4 that is a predetermined member that couples the light source substrate 48 and is integrated through the predetermined member in this manner is in an assembled state, and the emission surfaces 442 and 443 of the light guide 44 for the display plate. Is exposed from between the light guide support part 422 and the cover part 452.
　このように構成された照明ユニット４は、図２において、各光源ＬＰ，ＬＤ側が下方に位置し、出射面４４２，４４３が左右方向に露出し、液晶パネル４６が前方を向き、背面フレーム４１が背後方向を向くように回路基板２の中央部にビス留め固定される。なお図２中、上下左右方向及び前方、背後方向とは、実際の使用状態において利用車が計器装置を正面視したときの方向に一致する。 In the illumination unit 4 configured in this way, in FIG. 2, the light sources LP and LD sides are located below, the emission surfaces 442 and 443 are exposed in the left-right direction, the liquid crystal panel 46 faces forward, and the back frame 41 is Screwed to the center of the circuit board 2 so as to face the back direction. In FIG. 2, the up / down / left / right direction and the front / rear direction correspond to the directions when the vehicle is viewed from the front in the actual use state.
　また支持部材３を回路基板２上に組付けた際、照明ユニット４は、その液晶パネル４６の表示面が第１の切欠部３４に臨み、出射面４４２，４４３が第２の切欠部３５に臨む。 When the support member 3 is assembled on the circuit board 2, the illumination unit 4 has the display surface of the liquid crystal panel 46 facing the first cutout portion 34, and the emission surfaces 442 and 443 on the second cutout portion 35. Come on.
　パネル部材５は、支持部材３の外形に対応した形状の透光性合成樹脂板にスクリーン印刷等を施してなり、例えば全体の背景色は黒色で、図２中、水温計ＴＥからなる補助計器を構成する最も左側に位置する指針８に対応する指標部（図示しない）と、燃料計ＦＵからなる補助計器を構成する最も右側に位置する指針８に対応する指標部（図示しない）とが形成されている。また第１の表示板６に対応するパネル部材５箇所には、第１の表示板６に対応すると共に支持部材３の第２の支持部３３を挿入してパネル部材５から前方に突出させるための開口孔５１が二つ形成されている。 The panel member 5 is formed by performing screen printing or the like on a light-transmitting synthetic resin plate having a shape corresponding to the outer shape of the support member 3. For example, the overall background color is black. Is formed with an indicator portion (not shown) corresponding to the leftmost pointer 8 that constitutes and an indicator portion (not shown) corresponding to the rightmost pointer 8 that constitutes the auxiliary meter comprising the fuel gauge FU. Has been. In addition, the second support portion 33 of the support member 3 corresponding to the first display plate 6 is inserted into the five portions of the panel member corresponding to the first display plate 6 so as to protrude forward from the panel member 5. Two opening holes 51 are formed.
　第１の表示板６は、円板形の透光性合成樹脂板にスクリーン印刷等を施してなり、パネル部材５の開口孔５１に対応して二つ設けられている。これら第１の表示板６は、例えば全体の背景色が黒色で、図２中、左から２番目の指針８に対応する速度計ＳＰからなる主計器を構成する第１の表示板６には、速度計用の数字からなる透光性の指標部（図示しない）が形成され、図２中、右から２番目の指針８に対応するエンジン回転計ＴＡからなる主計器を構成する第１の表示板６には、エンジン回転計用の数字からなる透光性の指標部（図示しない）が形成されている。またこれら第１の表示板６の外周部には図示しない環状透光部が形成され、この環状透光部を介して第２の表示板７側に光を透過する構成となっている。 The first display board 6 is formed by performing screen printing or the like on a disc-shaped translucent synthetic resin plate, and two first display boards 6 are provided corresponding to the opening holes 51 of the panel member 5. These first display boards 6 have, for example, a black background color as a whole. For example, the first display board 6 constituting the main instrument comprising the speedometer SP corresponding to the second pointer 8 from the left in FIG. , A translucent indicator portion (not shown) made up of numerals for speedometers is formed, and a first instrument constituting a main meter comprising an engine tachometer TA corresponding to the second pointer 8 from the right in FIG. The display board 6 is formed with a translucent indicator portion (not shown) made up of numbers for an engine tachometer. In addition, an annular translucent portion (not shown) is formed on the outer peripheral portion of the first display plate 6, and light is transmitted to the second display plate 7 through the annular translucent portion.
　第２の表示板７は、所定色を有する背景中に速度計用の目盛からなる透光性の指標部が印刷形成された透光性合成樹脂板を絞り成型することにより、径方向の断面形状が山形の環状部材として形成され、支持部材３の第２の支持部３３の外壁側部と第１の表示板６の外周縁を覆うように配置される。第２の表示板７の前記指標部は第１の表示板６の環状透光部を介して照明される。なお図１～図３では、速度計ＳＰだけに第２の表示板７を設け、エンジン回転計ＴＡ側に設ける第２の表示板７は省略している。 The second display board 7 is formed by drawing a translucent synthetic resin plate on which a translucent indicator portion made of a scale for a speedometer is printed in a background having a predetermined color, thereby producing a radial cross section. The shape is formed as an annular member having a mountain shape, and is arranged so as to cover the outer wall side portion of the second support portion 33 of the support member 3 and the outer peripheral edge of the first display panel 6. The indicator portion of the second display board 7 is illuminated via the annular light transmitting portion of the first display board 6. 1 to 3, the second display board 7 is provided only for the speedometer SP, and the second display board 7 provided on the engine tachometer TA side is omitted.
　各指針８は例えば透光性合成樹脂からなる指示部８１と、この指示部８１の回転中心部を覆うキャップ８２とで構成され、駆動本体Ｍの指針軸Ｓに連結され、パネル部材５及び第１の表示板６上を計測量に応じて軸回り回転する。 Each pointer 8 is composed of an indicator portion 81 made of, for example, a light-transmitting synthetic resin, and a cap 82 that covers the rotation center portion of the indicator portion 81, and is connected to the pointer shaft S of the drive main body M. 1 is rotated around the axis according to the measurement amount.
　これら指針８のうち、速度計ＳＰとエンジン回転計ＴＡを構成する指針８は、他の補助計器用の指針８とは異なり、図６に示すようにキャップ８２内に指針用光源ＬＮとこの指針用光源ＬＮを実装する指針基板８３とを内蔵している。 Among these pointers 8, the pointers 8 constituting the speedometer SP and the engine tachometer TA are different from the pointers 8 for the other auxiliary instruments, and as shown in FIG. And a pointer board 83 on which the light source LN is mounted.
　指針用光源ＬＮは、例えば発光ダイオードからなり、発光部が指示部８１側を向くように指針基板８３に実装されている。 The pointer light source LN is made of, for example, a light emitting diode, and is mounted on the pointer substrate 83 so that the light emitting portion faces the pointing portion 81 side.
　指針基板８３は、指針用光源ＬＮに連なる接続パターン（図示しない）と、後述する電磁界発生手段との電磁誘導作用（磁界発生手段の電磁界）に応じて電力を発生させるコイルパターン（電力発生手段）８４とを形成する銅箔回路パターンが形成されている。なお電力発生手段は、コイルボビンに導線を巻いたものでもよい。 The pointer substrate 83 has a connection pattern (not shown) connected to the pointer light source LN and a coil pattern (electric power generation) that generates electric power in accordance with electromagnetic induction action (electromagnetic field of the magnetic field generating means) with an electromagnetic field generating means described later. A copper foil circuit pattern is formed. The power generation means may be a coil bobbin wound with a conducting wire.
　コイルパターン８４は、指針基板８３の背面（前記電磁界発生手段側）に、前記電磁界発生手段に対向するように渦巻き状に形成され、指針用光源ＬＮとは、スルーホールを通じて接続されている。 The coil pattern 84 is spirally formed on the back surface of the pointer substrate 83 (on the electromagnetic field generating means side) so as to face the electromagnetic field generating means, and is connected to the pointer light source LN through a through hole. .
　台座部材９は、遮光性または透光性を有する合成樹脂からなり、図７に詳しく示すように、指針８の回転平面と平行な支持部９１と、この支持部９１から回路基板２側に伸びる脚部である側壁部９２とを有する。 The pedestal member 9 is made of a synthetic resin having a light-shielding property or a light-transmitting property, and as shown in detail in FIG. 7, a support portion 91 parallel to the rotation plane of the pointer 8 and extends from the support portion 91 to the circuit board 2 side. And a side wall portion 92 which is a leg portion.
　支持部９１は、指針８の回転中心に対向する正面視円形に形成され、その指針８側を向く面は指針８の回転平面と平行に伸び、更にその中心には、指針８と指針軸Ｓとの連結を可能とする孔部が９３が形成されている。 The support portion 91 is formed in a circular shape when viewed from the front facing the rotation center of the pointer 8, the surface facing the pointer 8 extends in parallel with the rotation plane of the pointer 8, and further, the pointer 8 and the pointer shaft S are at the center. 93 is formed with a hole that enables connection with the.
　この支持部９１は、電力供給により電磁界を発生する電磁界発生手段ＥＭを回路基板２の基板面よりも指針８に近づけるために電磁界発生手段ＥＭを背後から支持する。 The supporting portion 91 supports the electromagnetic field generating means EM from behind in order to bring the electromagnetic field generating means EM that generates an electromagnetic field by supplying power closer to the pointer 8 than the substrate surface of the circuit board 2.
　電磁界発生手段ＥＭは、例えばＦＰＣ（フレキシブル・プリント・サーキット）からなるフィルム状基板に印刷形成されたコイル状（渦巻き状）配線パターンからなる（図示省略）。このコイル状配線パターンの中心は、指針軸Ｓ位置に近接している。なお電磁界発生手段ＥＭは、コイルボビンに導線を巻いたものでもよい。 The electromagnetic field generating means EM is composed of a coil-like (spiral) wiring pattern printed on a film-like substrate made of, for example, FPC (flexible printed circuit) (not shown). The center of the coiled wiring pattern is close to the pointer shaft S position. The electromagnetic field generating means EM may be a coil bobbin wound with a conducting wire.
　この電磁界発生手段ＥＭにより発生する電磁界は、コイルパターン８４に電力を発生させ、指針用光源ＬＮを発光させる対して電磁誘導作用により場合、指針８には、後述する電力発生手段が搭載され、この電力発生手段が電磁界発生手段ＥＭの電磁界を受けて後述する指針用光源に供給する電力を発生させる。 When the electromagnetic field generated by the electromagnetic field generating means EM generates electric power in the coil pattern 84 and causes the pointer light source LN to emit light by electromagnetic induction, the pointer 8 is provided with electric power generating means described later. The power generation means receives the electromagnetic field of the electromagnetic field generation means EM and generates power to be supplied to a pointer light source which will be described later.
　また前記フィルム状基板の端部は、側壁部９２を通って回路基板２の基板面へと引き回され、回路基板２上に搭載したコネクタＣを通じて前記回路パターンと接続される。 Also, the end of the film-like substrate is routed to the substrate surface of the circuit board 2 through the side wall 92 and connected to the circuit pattern through the connector C mounted on the circuit board 2.
　側壁部９２は、略円筒形に形成されているが、その適宜箇所には、照明ユニット４側からの光を照明ユニット４側とは反対側に通すための透光部９４が形成されている。 The side wall portion 92 is formed in a substantially cylindrical shape, but a light transmitting portion 94 for passing light from the illumination unit 4 side to the side opposite to the illumination unit 4 side is formed at an appropriate position. .
　以下、本実施形態による計器装置の組付けを説明する。
　まず背面カバー１の開口側から回路基板２を収納して固定する。この際、回路基板２には、予め照明ユニット４と台座部材９、電磁界発生手段ＥＭを装着しておく。 Hereinafter, assembly of the instrument device according to the present embodiment will be described.
First, the circuit board 2 is housed and fixed from the opening side of the back cover 1. At this time, the illumination unit 4, the base member 9, and the electromagnetic field generation means EM are mounted on the circuit board 2 in advance.
　次に回路基板２上に支持部材３、支持部材３上にパネル部材５及び第１の表示板６、パネル部材５及び第１の表示板６上に第２の表示板７の順序で組付け、最後にパネル部材５、第１の表示板６上から指針軸Ｓに各指針８を圧入して完了となる。 Next, the supporting member 3 is assembled on the circuit board 2, the panel member 5 and the first display board 6 are assembled on the supporting member 3, and the second display board 7 is assembled on the panel member 5 and the first display board 6 in this order. Finally, each pointer 8 is press-fitted into the pointer shaft S from the panel member 5 and the first display plate 6 to complete.
　次に液晶パネル４６、水温計ＴＥ、燃料計ＦＵ、速度計ＳＰ、エンジン回転計ＴＡの照明について
説明する。 Next, illumination of the liquid crystal panel 46, the water temperature gauge TE, the fuel gauge FU, the speedometer SP, and the engine tachometer TA will be described.
（液晶パネル４６の照明）
　照明ユニット４に組み込まれた液晶用光源ＬＰが発光すると、その光は受光面４３１を通じて液晶用導光体４３に入射して内部導光され、これにより液晶用導光体４３が面発光し、その面発光した光が出射面４３２から照射し、背後から液晶パネル４６をバックライト照明する。 (Lighting of the liquid crystal panel 46)
When the light source LP for liquid crystal incorporated in the illumination unit 4 emits light, the light enters the light guide 43 for liquid crystal through the light receiving surface 431 and is internally guided, whereby the light guide 43 for liquid crystal emits surface light, The surface-emitting light is emitted from the emission surface 432, and the liquid crystal panel 46 is backlit.
（水温計ＴＥ及び燃料計ＦＵ）
　回路基板２上に実装された発光ダイオードＬが発光すると、その光は支持部材３を通じて反射導光され、指針８及びパネル部材５の前記指標部を背後から照らす。 (Water temperature gauge TE and fuel gauge FU)
When the light emitting diode L mounted on the circuit board 2 emits light, the light is reflected and guided through the support member 3 to illuminate the indicator 8 and the indicator portion of the panel member 5 from behind.
（速度計ＳＰ及びエンジン回転計ＴＡを構成する第１，第２の表示板６，７の照明）
　照明ユニット４に組み込まれた表示板用光源ＬＤが発光すると、その光は受光面４４１を通じて表示板用導光体４４に入射する。表示板用導光体４４に入射した光は、内部導光されると共に反射部４４４と反射溝４４５とを通じて反射されて各出射面４４２，４４３から出射される。この出射光は、支持部材３の第２の切欠部３５を通じて反射板部３６と第１の表示板６との間に形成された空間部内に照射され、反射板部３６と第１の表示板６との間を繰り返し反射することで、第１の表示板６の前記指標部を背後から照明すると共に、第１の表示板６の前記環状透光部を介して第２の表示板７の前記指標部を背後から照明する。 (Lighting of the first and second display boards 6 and 7 constituting the speedometer SP and the engine tachometer TA)
When the display panel light source LD incorporated in the illumination unit 4 emits light, the light enters the display panel light guide 44 through the light receiving surface 441. The light incident on the display panel light guide 44 is internally guided, reflected through the reflection portion 444 and the reflection groove 445, and emitted from the emission surfaces 442 and 443. The emitted light is irradiated through the second cutout portion 35 of the support member 3 into the space formed between the reflection plate portion 36 and the first display plate 6, and the reflection plate portion 36 and the first display plate. 6, the indicator portion of the first display plate 6 is illuminated from behind, and the second display plate 7 of the second display plate 7 is connected via the annular light-transmitting portion of the first display plate 6. The indicator part is illuminated from behind.
　この際、指針軸Ｓの周囲には台座部材９が配置されているが、この台座部材９の側壁部９２は、照明ユニット４側からの光を照明ユニット４側とは反対側に通すための透光部９４が形成されているため、台座部材９で光の進行がブロックされないように構成している。さらに出射面４４３から出射される光の出射方向は、出射面４４２の出射方向とは若干異なる特定方向に角度調整されており、これによっても台座部材９を挟んで照明ユニット４（出射面４４２）とは反対側の輝度不足を解消するように配慮されている。 At this time, the pedestal member 9 is disposed around the pointer shaft S. The side wall portion 92 of the pedestal member 9 allows light from the illumination unit 4 side to pass through the side opposite to the illumination unit 4 side. Since the translucent portion 94 is formed, the base member 9 is configured not to block the progress of light. Further, the emission direction of the light emitted from the emission surface 443 is adjusted to a specific direction slightly different from the emission direction of the emission surface 442, and the illumination unit 4 (the emission surface 442) with the pedestal member 9 interposed therebetween. Consideration is made to eliminate the lack of brightness on the opposite side.
　また液晶パネル４６の周囲には、図１、図６に示すように、視認方向から見て液晶パネル４６の一部に第１の表示板６の前記指標部の一部が重なるように配置されることで、第１の表示板６に重なり部Ｂが形成されており、この重なり部Ｂに位置する表示板６の前記指標部領域は、液晶パネル４６に重なるため、本来、照明光が液晶パネル４６に遮られて光が届きにくいが、本実施形態では、その一部が液晶パネル４６上に位置する（支持部材３の）第２の支持部３３で第１の表示板６を支持することにより、重なり部Ｂと液晶パネル４６領域との間には空間部Ｋが形成され、この空間部Ｋ内に照明ユニット４の透光孔４５４を通じて表示板用導光体４４の光を導入し、この導入光で重なり部Ｂ内の前記指標部領域を照明するようにしている。 As shown in FIGS. 1 and 6, the liquid crystal panel 46 is arranged so that a part of the indicator portion of the first display panel 6 overlaps a part of the liquid crystal panel 46 when viewed from the viewing direction. As a result, an overlapping portion B is formed on the first display plate 6, and the indicator portion region of the display plate 6 located in the overlapping portion B overlaps the liquid crystal panel 46. In the present embodiment, the first display plate 6 is supported by the second support portion 33 (of the support member 3) (part of the support member 3), although it is difficult for light to reach due to being blocked by the panel 46. As a result, a space K is formed between the overlapping portion B and the liquid crystal panel 46 region, and the light of the display panel light guide 44 is introduced into the space K through the light transmitting hole 454 of the illumination unit 4. The indicator light region in the overlapping portion B is illuminated with the introduced light. .
　なお本実施形態では、空間部Ｋに導入した表示板用導光体４４の光で重なり部Ｂを照明するようにしたが、照明効率を高めるために透光孔４５４上に透光孔４５４を通過した光を重なり部Ｂに反射する反射部材（図示しない）を設けてもよい。また表示板用導光体４４を重なり部Ｂまで延長し、この延長部（図示しない）で重なり部Ｂを照明してもよい。 In the present embodiment, the overlapping portion B is illuminated with the light of the display panel light guide 44 introduced into the space K. However, in order to increase the illumination efficiency, the light transmitting hole 454 is provided on the light transmitting hole 454. A reflective member (not shown) that reflects the passed light to the overlapping portion B may be provided. Alternatively, the display panel light guide 44 may be extended to the overlapping portion B, and the overlapping portion B may be illuminated by this extending portion (not shown).
（速度計ＳＰ及びエンジン回転計ＴＡを構成する指針８の照明）
　電磁界発生手段ＥＭへの電力供給により電磁界が発生し、この電磁界による電磁誘導作用によってのコイルパターン８４に電力が発生し、その電力で指針用光源ＬＮが発光し、その光が指示部８１に入射して発光する。 (Lighting of the pointer 8 constituting the speedometer SP and the engine tachometer TA)
An electromagnetic field is generated by supplying electric power to the electromagnetic field generating means EM, and electric power is generated in the coil pattern 84 due to electromagnetic induction action by the electromagnetic field. Incident light 81 emits light.
　以上のように本実施形態では、駆動本体Ｍと、この駆動本体Ｍに連結された指針８と、この指針８によって指示される指標部を有する第１の表示板（表示板）６と、この第１の表示板６を照明する表示板用光源ＬＤと、この表示板用光源ＬＤの光を第１の表示板６に導く表示板用導光体４４と、各種情報を表示する液晶パネル４６と、この液晶パネル４６を照明する液晶用光源ＬＰと、この液晶用光源ＬＰの光を液晶パネル４６に導く液晶用導光体４３と、第１の表示板６及び液晶パネル４６の背後で駆動本体Ｍと液晶パネル４６とが電気接続される回路基板２とを備え、表示板用導光体４４と液晶用導光体４３のそれぞれに表示板用光源ＬＤと液晶用光源ＬＰの光がエッヂライト方式にて入射するように表示板用導光体４４と液晶用導光体４３のそれぞれの側端面に形成した各受光面４１３，４４１に表示板用光源ＬＤと液晶用光源ＬＰを対向配置してなる計器装置において、液晶用導光体４３の受光面４３１と対向する第１の基板部４８１と表示板用導光体の受光面４４１と対向する第２の基板部４８２とを連続して有する光源基板４８を設け、前記第１，第２の基板部４８１，４８２に表示板用光源ＬＤと液晶用光源ＬＰをそれぞれ実装してなることにより、表示板用光源ＬＤを実装する光源基板４８と液晶用光源ＬＰを実装する光源基板４８を共通化できるため、光源基板４８が一枚で済み、部品数を削減できる、コストダウンを達成することができる。 As described above, in the present embodiment, the drive main body M, the pointer 8 connected to the drive main body M, the first display board (display board) 6 having the indicator portion indicated by the pointer 8, A display panel light source LD that illuminates the first display panel 6, a display panel light guide 44 that guides the light from the display panel light source LD to the first display panel 6, and a liquid crystal panel 46 that displays various types of information. And a liquid crystal light source LP that illuminates the liquid crystal panel 46, a liquid crystal light guide 43 that guides the light of the liquid crystal light source LP to the liquid crystal panel 46, and the first display panel 6 and the liquid crystal panel 46. The circuit board 2 to which the main body M and the liquid crystal panel 46 are electrically connected is provided, and the light from the light source LD for the display plate and the light source LP for the liquid crystal LP are added to the light guide 44 for the display plate and the light guide 43 for the liquid crystal, respectively. Light guide for display plate 44 and light guide for liquid crystal so that light is incident. 43 is a measuring device in which a light source LD for display plate and a light source LP for liquid crystal LP are arranged opposite to each light receiving surface 413, 441 formed on each side end surface of the 43. A light source substrate 48 continuously having a first substrate portion 481 and a second substrate portion 482 facing the light receiving surface 441 of the light guide for display panel is provided, and the first and second substrate portions 481 and 482 are provided on the first and second substrate portions 481 and 482, respectively. By mounting the light source LD for display panel and the light source LP for liquid crystal respectively, the light source substrate 48 for mounting the light source LD for display panel and the light source substrate 48 for mounting the light source LP for liquid crystal can be shared. The cost can be reduced by reducing the number of parts.
　また本実施形態は、少なくとも液晶パネル４６及び液晶用導光体４３を支持する金属製の背面フレーム（ベース部材）４１を有し、この背面フレーム４１に光源基板４８を取り付けたことにより、光源基板４８を取り付けるための専用部品が不要となり、また表示板用光源ＬＤと液晶用光源ＬＰの放熱を背面フレーム４１で行うことで放熱部材を共通化できるため、更なるコスト削減が可能となる。 In addition, the present embodiment has a metal back frame (base member) 41 that supports at least the liquid crystal panel 46 and the liquid crystal light guide 43, and a light source substrate 48 is attached to the back frame 41. A dedicated component for attaching 48 is not necessary, and the heat radiation member can be made common by performing heat radiation of the light source LD for the display plate and the light source LP for the liquid crystal by the rear frame 41, so that further cost reduction can be achieved.
　また本実施形態は、表示板用導光体４４と液晶用導光体４３とを連結部４９を介して一体化してなることにより、部品点数を削減し、更なるコスト削減が可能となる。 Further, in this embodiment, the display panel light guide 44 and the liquid crystal light guide 43 are integrated via the connecting portion 49, thereby reducing the number of parts and further reducing the cost.
　また本実施形態は、液晶パネル４６と、表示板用導光体４４と、液晶用導光体４３と、光源基板４８とを背面フレーム４１と、第１の中間フレーム４２と、第２の中間フレーム４５と、前面フレーム４７とからなる所定部材を通じて結合してなることにより、液晶パネル４６と、表示板用導光体４４と、液晶用導光体４３と、光源基板４８とをユニット化でき、これにより組付けを容易とし、更なるコスト削減が可能となる。 In the present embodiment, the liquid crystal panel 46, the display plate light guide 44, the liquid crystal light guide 43, the light source substrate 48, the back frame 41, the first intermediate frame 42, and the second intermediate The liquid crystal panel 46, the display panel light guide body 44, the liquid crystal light guide body 43, and the light source substrate 48 can be unitized by being coupled through a predetermined member including the frame 45 and the front frame 47. This facilitates assembly and further cost reduction.
　また本実施形態は、視認方向から見て前記指標部の一部が液晶パネル４６に重なるように第１の表示板６が配置されることで重なり部Ｂが形成されており、この重なり部Ｂと液晶パネル４６との間に空間部Ｋを設け、この空間部Ｋに表示板用導光体４４の光を導入して重なり部Ｂに位置する前記指標部を照明する構成としたことにより、第１の表示板６の一部が液晶パネル４６に重なった場合でも専用の照明手段を設けることなく重なり部Ｂ内の前記指標部を照明でき、コスト削減が可能となる。 In the present embodiment, the overlapping portion B is formed by arranging the first display panel 6 so that a part of the indicator portion overlaps the liquid crystal panel 46 when viewed from the viewing direction. By providing a space K between the liquid crystal panel 46 and introducing the light of the display panel light guide 44 into the space K to illuminate the indicator portion located in the overlapping portion B. Even when a part of the first display panel 6 overlaps the liquid crystal panel 46, the indicator portion in the overlapping portion B can be illuminated without providing a dedicated illumination means, and the cost can be reduced.
（第２の実施形態）
　本発明の第２の実施形態では、図８に示すように、表示板用導光体４４の形状が前記第１の実施形態とは相違している。 (Second Embodiment)
In the second embodiment of the present invention, as shown in FIG. 8, the shape of the light guide 44 for the display panel is different from that of the first embodiment.
　すなわち、本実施形態では表示板用導光体４４を例えばＤ字形に形成すると共に、これらＤ字形の表示板用導光体４４に対応させて光源基板４８及び側壁部４１３を図中、左右方向に延長形成している。なお表示板用導光体４４は形状は任意である。 That is, in the present embodiment, the display panel light guide 44 is formed in, for example, a D-shape, and the light source substrate 48 and the side wall portion 413 are arranged in the left-right direction in the drawing so as to correspond to the D-shaped display panel light guide 44. It is formed to extend. The shape of the display panel light guide 44 is arbitrary.
　また前記第１，第２の実施形態では、表示板用導光体４４を二つ設けたが、表示板用導光体４４の数は任意である。 In the first and second embodiments, two display panel light guides 44 are provided, but the number of display panel light guides 44 is arbitrary.
　また前記第１，第２の実施形態では、光源基板４８に表示板用光源ＬＤと液晶用光源ＬＰをそれぞれ実装したが、指針８や他の発光表示装置（例えば警報・報知インジケータ）を照明するための光源を実装してもよい。この場合、光源基板４８に指針８や他の発光表示装置（例えば警報・報知インジケータ）を照明する光源を実装するための延長部を設ければよい。 In the first and second embodiments, the light source substrate 48 is mounted with the display plate light source LD and the liquid crystal light source LP, respectively, but illuminates the pointer 8 and other light emitting display devices (for example, an alarm / notification indicator). A light source may be implemented. In this case, an extension for mounting a light source for illuminating the pointer 8 or another light emitting display device (for example, an alarm / notification indicator) may be provided on the light source substrate 48.
　本発明は、自動車やオートバイ等の車両だけでなく、例えば各種船舶、農業機械、建設機械に搭載される計器装置に適用してもよい。 The present invention may be applied not only to vehicles such as automobiles and motorcycles, but also to instrument devices mounted on, for example, various ships, agricultural machines, and construction machines.
　１　背面カバー
　２　回路基板
　３　支持部材
　４　照明ユニット
　５　パネル部材
　６　第１の表示板
　７　第２の表示板
　８　指針
　９　台座部材
　３１　周壁
　３２　第１の支持部
　３３　第２の支持部
　３４　第１の切欠部
　３５　第２の切欠部
　３６　反射板部（反射部材）
　４１　背面フレーム（ベース部材）
　４２　第１の中間フレーム
　４３　液晶用導光体
　４４　文字板用導光体
　４５　第２の中間フレーム
　４６　液晶パネル
　４７　前面フレーム
　４８　光源基板
　４９　連結部
　５１　開口孔
　８１　指示部
　８２　キャップ
　８３　指針基板
　８４　コイルパターン（電力発生手段）
　９１　支持部
　９２，４７２　側壁部
　９３　孔部
　９４　透光部
　４１１　底板部
　４１２，４１３　側壁部
　４２１　収納部
　４２２　導光体支持部
　４２３　仕切壁
　４２４　切欠部
　４３１，４４１　受光面
　４３２，４４２，４４３　出射面
　４４４　反射部
　４４５　反射溝
　４５１　収納部
　４５２　覆い部
　４５３　保持部
　４５４　透光孔
　４７１　底板部（前板部）
　４８１　第１の基板部
　４８２　第２の基板部
　ＥＭ　電磁界発生手段
　Ｌ　発光ダイオード
　Ｍ　駆動本体
　Ｓ　指針軸
　ＬＰ　液晶用光源
　ＬＤ　表示板用光源
　ＬＮ　指針用光源
　ＦＵ　燃料計
　ＳＰ　速度計
　ＴＡ　エンジン回転計
　ＴＥ　水温計 DESCRIPTION OF SYMBOLS 1 Back cover 2 Circuit board 3 Support member 4 Illumination unit 5 Panel member 6 1st display board 7 2nd display board 8 Pointer 9 Base member 31 Perimeter wall 32 1st support part 33 2nd support part 34 1st Cutout portion 35 Second cutout portion 36 Reflector portion (reflective member)
41 Back frame (base member)
42 first intermediate frame 43 light guide for liquid crystal 44 light guide for dial plate 45 second intermediate frame 46 liquid crystal panel 47 front frame 48 light source substrate 49 connecting portion 51 opening hole 81 indicating portion 82 cap 83 pointer substrate 84 coil Pattern (electric power generation means)
91 Support portion 92,472 Side wall portion 93 Hole portion 94 Translucent portion 411 Bottom plate portion 412,413 Side wall portion 421 Storage portion 422 Light guide support portion 423 Partition wall 424 Notch portion 431,441 Light receiving surface 432,442,443 444 Reflecting portion 445 Reflecting groove 451 Storage portion 452 Cover portion 453 Holding portion 454 Translucent hole 471 Bottom plate portion (front plate portion)
481 1st board | substrate part 482 2nd board | substrate part EM Electromagnetic field generating means L Light emitting diode M Drive body S Pointer axis LP Light source for liquid crystal LD Light source for display board LN Light source for pointer FU Fuel meter SP Speedometer TA Engine tachometer TE Water temperature gauge

Claims (4)

  1. 駆動本体と、この駆動本体に連結された指針と、この指針によって指示される指標部を有する表示板と、この表示板を照明する表示板用光源と、この表示板用光源の光を前記表示板に導く表示板用導光体と、各種情報を表示する液晶パネルと、この液晶パネルを照明する液晶用光源と、この液晶用光源の光を前記液晶パネルに導く液晶用導光体と、前記表示板及び前記液晶パネルの背後で前記駆動本体と前記液晶パネルとが電気接続される回路基板とを備え、表示板用導光体と前記液晶用導光体のそれぞれに前記表示板用光源と前記液晶用光源の光がエッヂライト方式にて入射するように表示板用導光体と前記液晶用導光体のそれぞれの側端面に形成した各受光面に前記表示板用光源と前記液晶用光源を対向配置してなる計器装置において、前記液晶用導光体の前記受光面と対向する第１の基板部と前記表示板用導光体の前記受光面と対向する第２の基板部とを連続して有する光源基板を設け、前記各基板部に前記表示板用光源と前記液晶用光源をそれぞれ実装してなることを特徴とする計器装置。 A driving body, a pointer connected to the driving body, a display board having an indicator portion indicated by the pointer, a light source for a display board that illuminates the display board, and light of the light source for the display board A light guide for a display plate that leads to a plate, a liquid crystal panel that displays various information, a light source for liquid crystal that illuminates the liquid crystal panel, a light guide for liquid crystal that guides light of the light source for liquid crystal to the liquid crystal panel, A circuit board electrically connected to the driving body and the liquid crystal panel behind the display plate and the liquid crystal panel, and the light source for the display plate in each of the light guide for the display plate and the light guide for the liquid crystal And the light source for the display plate and the liquid crystal on each light receiving surface formed on each side end surface of the light guide for the liquid crystal plate and the light guide for the liquid crystal so that light of the light source for the liquid crystal is incident by an edge light method. In an instrument device in which a light source for use is arranged oppositely, A light source substrate having a first substrate portion facing the light receiving surface of the light guide for liquid crystal and a second substrate portion facing the light receiving surface of the light guide for display plate is provided; An instrument device, wherein the display panel light source and the liquid crystal light source are respectively mounted on each substrate portion.
  2. 少なくとも前記液晶パネル及び前記液晶用導光体を支持する金属製のベース部材を有し、このベース部材に前記光源基板を取り付けてなることを特徴とする請求項１記載の計器装置。 2. The instrument device according to claim 1, further comprising a metal base member that supports at least the liquid crystal panel and the liquid crystal light guide, and the light source substrate attached to the base member.
  3. 前記表示板用導光体と前記液晶用導光体とを連結部を介して一体化してなることを特徴とする請求項１記載の計器装置。 The instrument device according to claim 1, wherein the light guide for display plate and the light guide for liquid crystal are integrated via a connecting portion.
  4. 液晶パネルと、前記表示板用導光体と、前記液晶用導光体と、前記光源基板とを所定部材を通じて結合してなることを特徴とする請求項１記載の計器装置。 2. The instrument device according to claim 1, wherein the liquid crystal panel, the light guide for display panel, the light guide for liquid crystal, and the light source substrate are coupled through a predetermined member.
PCT/JP2011/050641 2010-01-29 2011-01-17 Indicator device WO2011093159A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-018439 2010-01-29
JP2010018439A JP2011158285A (en) 2010-01-29 2010-01-29 Indicator device

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US20150158422A1 (en) * 2013-12-06 2015-06-11 Delphi Technologies, Inc. Light-pipe cut from sheet stock for instrument panel

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JP2004212126A (en) * 2002-12-27 2004-07-29 Nippon Seiki Co Ltd Illuminator
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JPH0545649A (en) * 1991-08-21 1993-02-26 Mitsubishi Electric Corp Lighting structure and assembly structure of liquid crystal display unit
JP2001091309A (en) * 1999-09-28 2001-04-06 Toyoda Gosei Co Ltd Meter illuminator for vehicles
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JP2010019726A (en) * 2008-07-11 2010-01-28 Yazaki Corp On-vehicle display device

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US8919276B2 (en) * 2011-03-01 2014-12-30 Yazaki Corporation Assembly structure of display device and assembly method of the display device

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