JP6754644B2 - Vehicle display device - Google Patents

Description

The present invention relates to a vehicle display device.

As a conventional vehicle display device, for example, Patent Document 1 discloses an instrument including at least one or more instruments, a dial, a case, and a back cover arranged around the instruments. There is. This instrument consists of a light guide ring in which a light guide body and a light shielding body are integrally formed, a light source, and a prism arranged between the light guide ring and the light source, and covers the outer periphery of the dial of the instruments. It is provided with light emitting portions arranged in an annular shape as described above, and the light guide ring is fixed in the vicinity of the tip end portion of the dial.

Japanese Unexamined Patent Publication No. 2013-0765771

By the way, the instrument described in Patent Document 1 described above has room for further improvement in, for example, suppression of light emission unevenness in the light emitting portion.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle display device capable of appropriately emitting light from a decorative light emitting portion.

In order to achieve the above object, the vehicle display device according to the present invention transmits light from the light source unit and diffuses the light from the light source unit into a light shielding region that blocks the light from the light source unit. A plate-shaped member including a region, a protruding main body portion that protrudes from the plate-shaped member along the direction of light irradiation by the light source portion and is provided in a hollow shape, and the light source portion provided on the protruding tip side of the protruding main body portion. It is provided with a decorative projecting portion having a diffuse transmission portion that transmits and diffuses the light emitted from the inside of the projecting main body portion through the transmission region, and the transmission region relates to the light irradiation direction. The diffused and transmitted portion at a position where the light transmission width along the transmission region width direction intersecting the light irradiation direction and facing the inside of the protruding main body portion is opposed to the light irradiation direction. It is characterized in that it differs depending on the distance from the transmission region along the irradiation direction of the light.

Further, in the vehicle display device, the light transmission width is relatively wide at a position where the distance between the diffusion transmission portion and the transmission region along the light irradiation direction is relatively long, and the light transmission width is relatively wide with the diffusion transmission portion. The distance from the transmission region along the irradiation direction of the light can be relatively short at a position where the distance is relatively short.

Further, in the vehicle display device, the protruding main body portion is formed by an outer annular portion formed in an annular shape and an inner annular portion formed in an annular shape inside the outer annular portion at intervals from the outer annular portion. It is formed in a hollow shape, and the diffusion / transmitting portion may be formed in an annular shape between the outer annular portion and the inner annular portion to connect the outer annular portion and the inner annular portion.

Further, in the vehicle display device, the decorative protruding portion may have a decorative member that is adjacent to the diffusion transmission portion and is assembled to the protruding main body portion.

In the vehicle display device according to the present invention, the decorative light emitting portion is formed by transmitting and diffusing the light radiated from the light source portion through the transmission region into the inside of the protruding main body portion by the diffusion transmission portion of the decorative protrusion. Will be done. Then, the vehicle display device adjusts the amount of light in the transmission region according to the distance between the diffusion transmission portion and the transmission region because the light transmission width of the transmission region differs according to the distance between the diffusion transmission portion and the transmission region. Therefore, it is possible to suppress the occurrence of unevenness in the light emission of the decorative light emitting portion so that the light is emitted substantially uniformly. As a result, the vehicle display device has an effect that the decorative light emitting portion can appropriately emit light.

FIG. 1 is an exploded perspective view showing a schematic configuration of a vehicle display device according to an embodiment. FIG. 2 is a partial cross-sectional view showing a schematic configuration of the vehicle display device according to the embodiment. FIG. 3 is an exploded perspective view showing a schematic configuration of the vehicle display device according to the embodiment. FIG. 4 is a partial perspective view including a decorative protrusion of the vehicle display device according to the embodiment. FIG. 5 is a partial front view of the dial of the vehicle display device according to the embodiment.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

Note that FIG. 3 described below omits the illustration of the transparent cover and the pressing member. Further, FIGS. 2, 3 and 4 show the colors of the dial in a partially simplified manner.

[Embodiment]
The vehicle display device 1 according to the present embodiment shown in FIGS. 1 and 2 constitutes a so-called in-vehicle meter, and is, for example, mounted on an instrument panel provided on the dashboard of the vehicle and used for driving the vehicle. Various information about the vehicle is displayed as the information to be displayed.

The width direction X of the vehicle display device 1 shown in FIG. 1 and the like typically corresponds to the vehicle width direction of the vehicle to which the vehicle display device 1 is applied. In the following description, in the width direction X of the vehicle display device 1, the left side (left side in FIG. 1) facing the front surface of the vehicle display device 1 is the width direction X left side, and the right side (right side in FIG. 1) is the width direction. It may be called the right side of X. Further, the depth direction Y of the vehicle display device 1 typically corresponds to the front-rear direction of the vehicle to which the vehicle display device 1 is applied. The front side of the vehicle display device 1 is the side facing the driver's seat of the vehicle in the depth direction Y, and is typically the side visually recognized by the driver sitting in the driver's seat. On the other hand, the rear side of the vehicle display device 1 is the side opposite to the front side in the depth direction Y, and is typically the side housed inside the instrument panel. The height direction Z of the vehicle display device 1 typically corresponds to the height direction of the vehicle to which the vehicle display device 1 is applied, and is, for example, a direction along the vertical direction. Further, each direction used in the following description represents a direction in which the vehicle display device 1 is assembled to the instrument panel, unless otherwise specified.

Specifically, the vehicle display device 1 includes a display unit 2 that displays various information about the vehicle, and a housing 3 that houses the display unit 2 and the like. Here, as an example, the display unit 2 includes a speedometer 21 for displaying the vehicle speed, a tachometer 22 for displaying the output rotation speed of the power source for traveling (some text information is not shown), and the like. It includes a fuel gauge 23 that displays the remaining amount of fuel, a water temperature gauge 24 that displays the temperature of cooling water, a liquid crystal display device 25 that displays various information as images, and the like. The speedometer 21, tachometer 22, fuel gauge 23, and water temperature gauge 24 are vehicle analog instruments that display measured values related to the vehicle. The display unit 2 is arranged in the housing 3 that houses each part of the vehicle display device 1, and the display surface of various information is exposed on the front side in the depth direction Y. The housing 3 is made of a resin material or the like. The housing 3 is arranged, for example, on the back cover 31 arranged on the back side in the depth direction Y, the case body 32 arranged on the front side Y in the depth direction of the back cover 31, and the front side Y in the depth direction of the case body 32. The display unit 2 is arranged in a space portion that is configured to include the return member 33 and is partitioned by these. Then, in the housing 3, the display surface of each display unit 2 is exposed to the front side in the depth direction Y through the opening formed in the facing member 33. Here, in the display unit 2, the speedometer 21 is arranged on the left side in the width direction X, while the tachometer 22 is arranged on the right side X in the width direction in the housing 3, and the fuel gauge 23, the water temperature gauge 24, and the water temperature gauge 24 are further arranged. , The liquid crystal display device 25 is arranged between them. Further, the vehicle display device 1 is further arranged on the front side of the return member 33 in the depth direction Y and protects the front side of the display unit 2 in the depth direction Y, and the transparent cover 4 between the return member 33 and the transparent cover 4. The pressing member 5 is provided for holding the holding member 5.

For example, as shown in FIG. 2, in the speedometer 21, the internal unit 7 is fixed to the wiring plate 6 arranged in the housing 3. The internal unit 7 includes a motor 71 that is a drive source of the pointer 8, and a rotating shaft 72 is projected from the motor 71. The pointer 8 is connected to the rotary shaft 72 and is rotationally driven by being driven by the motor 71, and is arranged in the housing 3 according to various measured values related to the vehicle (vehicle speed in the case of the speedometer 21). It points to a predetermined position of the index part for the scale drawn on the board 9. The dial 9 is provided so as to be sandwiched between the case main body 32 and the dial member 33, and the decoration of the scale indicated by the pointer 8 and various symbols related to the measured values attached corresponding to the scale. It is composed of decorations such as symbols and character strings. The tachometer 22, the fuel gauge 23, and the water temperature gauge 24 have almost the same configuration as the speedometer 21.

More specifically, as shown in FIGS. 2 and 3, the vehicle display device 1 includes a back cover 31, a wiring plate 6, a case body 32, and a dial 9 from the back side to the front side in the depth direction Y. The structure is such that the facing member 33, the transparent cover 4, and the pressing member 5 are laminated in this order. In the vehicle display device 1, the wiring plate 6 is assembled to the back side of the case body 32 in the depth direction Y, and the back cover 31 is assembled to the case body 32 so as to cover the wiring plate 6 from the back side of the depth direction Y. The wiring board 6 is formed in a substantially rectangular plate shape, and various electronic components and wiring for realizing various functions in the vehicle display device 1 are mounted on the wiring board 6, and is described above on the mounting surface 61 on the front side in the depth direction Y. An internal unit 7, a liquid crystal display device 25, and the like are mounted. The case body 32 has an opening that exposes the liquid crystal display device 25 to the front side in the depth direction Y, an opening that penetrates the rotating shaft 72, and an opening that accommodates a light source mounted on the mounting surface 61 of the wiring plate 6 and forms an optical path of light. Various openings such as are formed. Further, in the vehicle display device 1, a facing member 33 is assembled to the front side of the case body 32 in the depth direction Y via the dial 9. As described above, the dial 9 is provided so as to be interposed between the case main body 32 and the return member 33, and various scales, symbols, symbols, and character strings according to the vehicle information displayed by the display unit 2 are provided. It is a plate-shaped member on which etc. are drawn. The dial 9 is, for example, a sheet made of polycarbonate, which is a light-transmitting material that transmits and diffuses light, and is printed with a shape corresponding to the scale, a pattern, a symbol, a character string, or the like hollowed out by a dark color ink. The above scales, patterns, symbols, character strings, etc. are drawn by applying. The dial 9 is irradiated with light from the back side, and the irradiated light is transmitted in a portion where various scales, symbols, symbols, character strings, etc. are drawn, so that the various scales, symbols, symbols, etc. are transmitted. , Character strings, etc. are lit and displayed. The dial 9 is formed with various openings such as an opening for exposing the liquid crystal display device 25 to the front side in the depth direction Y and an opening for penetrating the rotation shaft 72. The facing member 33 is a frame-shaped member that covers the end portion of the dial 9 and the like and presses the dial 9 and the like between the dial 9 and the like, and as described above, the display surface of each display unit 2 is viewed in the depth direction from the opening. Y Expose to the front side. The facing member 33 has a protruding frame-shaped portion 33a that projects from the dial 9 side to the front side in the depth direction Y and is formed in an annular shape so as to surround the entire dial 9, and the protruding frame-shaped portion 33a has a depth direction Y. The transparent cover 4 and the pressing member 5 are assembled to the tip portion on the front surface side.

Then, as shown in FIGS. 2, 3, 4, and 5, the vehicle display device 1 of the present embodiment includes a light source unit 100 for the light emitting decoration portion that irradiates the light emitting decoration portion with light. By providing the dial 9 as a plate-shaped member and the decorative projecting portion 110 constituting the light emitting decoration portion, the decorative light emitting portion can be appropriately emitted with light.

Specifically, as shown in FIGS. 2 and 3, the light source unit 100 includes a light source 101 and an annular prism 102. Here, a total of two light source units 100 are provided, one on the back side of the speedometer 21 in the depth direction Y and one on the back side of the tachometer 22 in the depth direction Y. Since the two light source units 100 have substantially the same configuration, only the speedometer 21 side will be described here. The light source 101 is mounted on the mounting surface 61 of the wiring plate 6 and irradiates light toward the front side in the depth direction Y. That is, here, the light irradiation direction of the light source 101 of the light source unit 100, in other words, the optical axis direction of the light source 101 is a direction along the depth direction Y. The light source 101 is composed of, for example, an LED (Light Emitting Diode) element or the like, but is not limited thereto. Here, a plurality of light sources 101 are provided at intervals along an annular shape centered on the rotation shaft 72 of the motor 71 constituting the speedometer 21, and here, four light sources 101 are provided. Each light source 101 is housed in an opening formed on the back side of the case body 32 in the depth direction Y and forming an optical path of the light irradiated by the light source 101, and is housed in the opening toward the front side in the depth direction Y. Irradiate light. The annular prism 102 is such that the light emitted by each light source 101 is incident, guides the incident light, and emits the incident light toward the decorative projecting portion 110 side, which will be described later. The annular prism 102 is formed of a light-transmitting resin material such as acrylic resin. The annular prism 102 includes an annular light guide portion 102a formed in an annular shape and an incident portion 102b protruding from the annular light guide portion 102a toward the back surface side in the depth direction Y. A plurality of incident portions 102b, four in this case, are provided at intervals along the annular light guide portion 102a. The annular prism 102 is assembled in the annular accommodating recess 32a formed on the front surface side of the case body 32 in the depth direction Y. The accommodating recess 32a communicates with the opening forming the optical path of the light source 101. The annular prism 102 is assembled in the accommodating recess 32a in a positional relationship in which each incident portion 102b faces each light source 101 on the front side in the depth direction Y. The annular prism 102 guides the light radiated by each light source 101 and incident on each incident portion 102b through the annular light guide portion 102a, and guides the light to the inside of the decorative projecting portion 110 described later located on the front side in the depth direction Y. Irradiate toward the side.

As shown in FIGS. 2 and 3, the dial 9 is a plate-shaped member including a transmission region 92 in the light-shielding region 91, and is provided between the case main body 32 and the facing member 33 as described above. Be done. The light-shielding region 91 is a region printed with dark-colored ink on a polycarbonate sheet of a light-transmitting fabric, and is a region that shields light from the light source unit 100. The transmission region 92 is a region of the polycarbonate sheet of the light-transmitting fabric that has not been printed with dark ink, and is provided in the light-shielding region 91 to transmit and diffuse the light from the light source unit 100. is there. Here, similarly to the light source unit 100 described above, two transmission regions 92 are provided, one on the back side of the speedometer 21 in the depth direction Y and one on the back side of the tachometer 22 in the depth direction Y. Since the two transmission regions 92 have substantially the same configuration, only the speedometer 21 side will be described here. The transmission region 92 is formed as a substantially annular region in the light-shielding region 91. The transmission region 92 is formed at a position facing the annular prism 102 on the Y front side in the depth direction of the annular prism 102. The transmission region 92 transmits the light irradiated by the light source 101 and guided by the annular prism 102 and emitted to the front side in the depth direction Y, and is directed to the front side in the depth direction Y, here, toward the decorative protrusion 110 side described later. Diffuse and irradiate. The dial 9 also has a measurement display surface 91a formed in the light-shielding area 91, which is an area on which the above-mentioned scales, symbols, symbols, character strings, etc. are drawn. The measurement display surface 91a is provided inside each transmission region 92 or above each transmission region 92 in the height direction Z, and each display content on the speedometer 21, tachometer 22, fuel gauge 23, and water temperature gauge 24. It is formed as a region that transmits and diffuses light according to the shape of the scale, pattern, symbol, character string, etc. drawn corresponding to. On the other hand, the transmission region 92 faces the decorative protrusion 110 described later on the front side in the depth direction Y of the region that transmits and diffuses light in the dial 9, and the inside of the decoration protrusion 110. It is an area that irradiates light toward the side.

As shown in FIGS. 2, 3, and 4, the decorative projecting portion 110 is a portion that protrudes from the dial 9 along the direction of light irradiation by the light source unit 100 to form a light emitting decoration portion. Here, two decorative projecting portions 110 are provided in an annular shape inside the projecting frame-shaped portion 33a so as to surround the entire measurement display surface 91a corresponding to the speedometer 21 and the tachometer 22. Since the two decorative protrusions 110 have substantially the same configuration, only the speedometer 21 side will be described here. The decorative projecting portion 110 is provided at a position facing the transmission region 92 of the dial 9 in the depth direction Y. Here, the decorative projecting portion 110 is formed as a part of the facing member 33 located on the front side of the dial 9 in the depth direction Y. Specifically, the decorative projecting portion 110 includes a protruding main body portion 111, a diffusion transmission portion 112, and a decoration ring 113 as a decoration member. In the decorative protruding portion 110, the protruding main body portion 111 and the diffusion transmission portion 112 are formed integrally with the protruding frame-shaped portion 33a of the return member 33, while the decorative ring 113 is separate from the protruding frame-shaped portion 33a and the like. It is formed on the body and assembled to the protruding main body 111.

The projecting main body 111 projects from the dial 9 along the direction of light irradiation by the light source 100, that is, the depth direction Y, and is provided in a hollow shape. The protruding main body portion 111 is formed in an annular shape inside the protruding frame-shaped portion 33a so as to surround the entire measurement display surface 91a corresponding to the speedometer 21. More specifically, the protruding main body 111 is formed in a hollow shape by the outer annular portion 114 and the inner annular portion 115, which are formed in an annular shape, respectively. The outer annular portion 114 is formed so as to be integrated with the protruding frame-shaped portion 33a at the end portion on one side in the width direction X (on the left side in the width direction X in the case of the protruding main body portion 111 corresponding to the speedometer 21). The inner annular portion 115 is formed in an annular shape inside the outer annular portion 114 at intervals from the outer annular portion 114, and the measurement display surface 91a corresponding to the speedometer 21 is exposed from the inside of the inner annular portion 115. The protruding main body 111 has an opening 116 for exposing the diffusion transmission portion 112 between the outer annular portion 114 and the inner annular portion 115 at the protruding tip side, that is, the end portion opposite to the dial 9 side. (In particular, see FIGS. 2 and 4) are formed. The opening 116 is formed in an annular shape between the tip of the outer annular portion 114 and the tip of the inner annular portion 115.

The diffusion transmission portion 112 is provided on the protruding tip side of the protruding main body portion 111 formed in a hollow shape by the outer annular portion 114 and the inner annular portion 115, that is, on the side opposite to the dial 9 side. In other words, the diffusion transmission portion 112 is provided at the end portion of the projecting main body portion 111 on the front side in the depth direction Y. The diffusion transmission portion 112 is provided so as to be exposed in the opening 116 on the protruding tip side of the protruding main body 111 on the hollow inner side of the protruding main body 111 formed by the outer annular portion 114 and the inner annular portion 115. Be done. The diffusion transmission portion 112 is formed in an annular shape along the opening 116. The decorative projecting portion 110 has a protruding frame-shaped portion 33a, an outer annular portion 114, and an inner annular portion so that the diffusion transmission portion 112 is located at the opening 116 between the outer annular portion 114 and the inner annular portion 115. The entire facing member 33 including each portion of 115 is insert-molded and integrated, so that the protruding frame-shaped portion 33a, the outer annular portion 114, the diffusion transmission portion 112, and the inner annular portion 115 are integrally formed. That is, the diffusion transmission portion 112 functions as a so-called joint plate which is formed in an annular shape between the outer annular portion 114 and the inner annular portion 115 and is a connecting member for connecting the outer annular portion 114 and the inner annular portion 115. The hollow interior of the protruding main body 111 formed by the outer annular portion 114 and the inner annular portion 115, and the diffusion transmission portion 112 face the transmission region 92 of the dial 9 in the depth direction Y. The hollow space portion formed by the outer annular portion 114 and the inner annular portion 115 functions as an optical path space portion 117 (see FIG. 2) for the light emitted from the transmission region 92 to reach the diffusion transmission portion 112. .. The optical path space portion 117 is formed as an annular space portion facing the transmission region 92 on the front side in the depth direction Y of the transmission region 92.

The decorative projecting portion 110 is formed of a light-shielding resin material in which the protruding main body 111 together with the protruding frame-shaped portion 33a shields light, while the diffusion-transmitting portion 112 transmits and diffuses light, such as a polycarbonate resin. It is formed of a light-transmitting resin material. The diffusion transmission unit 112 functions as a so-called diffuser, which is a diffusion member that transmits and diffuses the light irradiated from the light source unit 100 to the optical path space portion 117 inside the projecting main body portion 111 via the transmission region 92.

The polycarbonate sheet forming the transmission region 92 of the dial 9 and the diffusion transmission portion 112 described above may both be formed of a light-transmitting resin material that transmits and diffuses light. The transmission region 92 and the diffusion transmission portion 112 are configured to irradiate bright white light by being formed of a similar color, for example, a white translucent resin material, but the present invention is not limited to this. The polycarbonate sheet forming the transmission region 92 of the dial 9 and the diffusion transmission portion 112 are not limited to white, and may be formed of a translucent resin material such as red, blue, or green. ..

The decoration ring 113 is a decoration member that decorates the protruding tip of the protruding main body 111, that is, the end opposite to the dial 9 side. The decorative ring 113 is formed in an annular shape along the opening 116 and the diffusion transmission portion 112. The decorative ring 113 is assembled to the protruding main body 111 adjacent to the opening 116 and the diffusion transmitting portion 112 on the outside of the opening 116 and the diffusion transmitting portion 112. Here, the decorative ring 113 is assembled to the outer annular portion 114 constituting the protruding main body portion 111, and is heat-welded via, for example, the locking protrusion 113a (see FIG. 2). The decorative ring 113 is formed of, for example, a light-shielding resin material that blocks light, and the decorative surface is formed by metal plating on the front side in the depth direction Y. Further, the decorative ring 113 also functions as a parting portion for the inner edge portion of the ring to see through the outer boundary line of the diffusion transmission portion 112 and the opening 116. On the other hand, the inner annular portion 115 constituting the protruding main body portion 111 also functions as a parting portion for the outer edge portion of the annular portion to see through the diffusion transmission portion 112 and the inner boundary line of the opening 116.

The vehicle display device 1 configured as described above transmits and diffuses the light emitted from the light source unit 100 through the transmission region 92 into the inside of the projecting main body portion 111 by the diffusion transmission portion 112 of the decorative projecting portion 110. By doing so, the decorative light emitting part is constructed. That is, the light emitted from each light source 101 constituting the light source unit 100 is guided to the front side in the depth direction Y via the annular prism 102, and is an optical path space portion inside the projecting main body portion 111 via the transmission region 92. It is diffused to 117 and irradiated. Then, the light diffused and irradiated to the optical path space portion 117 inside the projecting main body portion 111 reaches the diffusion transmission portion 112 via the optical path space portion 117, is transmitted through the diffusion transmission portion 112, is diffused, and is diffused in the depth direction Y. The front side, that is, the side visually recognized by the driver sitting in the driver's seat is irradiated. As a result, in the vehicle display device 1, the diffusion transmission portion 112 emits light, and the decorative protrusion 110 including the diffusion transmission portion 112 functions as a decoration light emitting portion.

By the way, as shown in FIGS. 2, 3 and 4, the decorative projecting portion 110 of the present embodiment has a portion in which the protrusion amount of the protrusion main body portion 111 from the dial 9 is relatively large and the protrusion amount is large. The configuration includes a relatively small portion and a portion in which the distance between the diffusion transmission portion 112 and the transmission region 92 in the depth direction Y is different accordingly. Here, the decorative projecting portion 110 provided on the speedometer 21 side has a relatively large amount of protrusion on the left side in the width direction X (that is, near the left end of the vehicle display device 1) and on the upper side in the height direction Z. While the distance between the diffusion transmission portion 112 and the transmission region 92 is relatively long, the amount of protrusion of the portion on the right side of the width direction X (that is, closer to the center of the vehicle display device 1) and on the lower side of the height direction Z is relatively small. It is formed so that the distance between the diffusion transmission portion 112 and the transmission region 92 is relatively short. The decorative projecting portion 110 provided on the speedometer 21 side is formed so that the amount of protrusion gradually changes between the two portions, and the diffusion transmission portion 112 and the transmission region 92 are formed accordingly. The distance of is also configured to change gradually.

In the vehicle display device 1 of the present embodiment, as described above, the protrusion amount of the protrusion main body 111 from the dial 9 is different depending on the position, and the distance between the diffusion transmission portion 112 and the transmission region 92 is different. By using the transmission region 92 as a dimming unit, uneven light emission in the diffusion transmission unit 112 is suppressed. That is, as shown in FIGS. 2, 5 and the like, the vehicle display device 1 is provided with a transmission region facing the optical path space portion 117 inside the projecting main body portion 111 with respect to the light irradiation direction (depth direction Y). The light transmission width of the 92 is formed so as to be different depending on the distance between the diffusion transmission portion 112 and the transmission region 92 along the light irradiation direction, thereby suppressing light emission unevenness in the diffusion transmission portion 112.

Here, the light transmission width of the transmission region 92 corresponds to the width of the transmission region 92 along the light irradiation direction, here, the transmission region width direction intersecting with the depth direction Y. Typically, the transmission region width direction is orthogonal to the depth direction Y and orthogonal to the extending direction (tangential direction) of the transmission region 92 at the position, and the light transmission width of the transmission region 92 is typical. Is the width in the direction orthogonal to the depth direction Y and orthogonal to the extending direction of the transmission region 92 at the position. The light transmission width of the transmission region 92 of the present embodiment depends on the distance between the diffusion transmission portion 112 at a position facing the light irradiation direction (depth direction Y) and the transmission region 92 along the light irradiation direction. Is different. More specifically, the light transmission width of the transmission region 92 is relative to the position where the distance between the diffusion transmission portion 112 and the transmission region 92 along the light irradiation direction is relatively long (see, for example, the distance T1 in FIG. 2). (For example, see the light transmission width W1 in FIG. 2), and the distance between the diffuse transmission portion 112 and the transmission region 92 along the light irradiation direction is relatively short (see, for example, the distance T2 in FIG. 2). Is relatively narrow (see, for example, the light transmission width W2 in FIG. 2). As a result, the transmission region 92 of the dial 9 can function as a dimming unit that adjusts the amount of light according to the distance between the diffusion transmission portion 112 and the transmission region 92.

According to the vehicle display device 1 described above, the light source unit 100 that irradiates the light and the transmission region 92 that transmits and diffuses the light from the light source unit 100 within the light shielding region 91 that blocks the light from the light source unit 100. The dial 9 including the dial 9, the protruding main body 111 that protrudes from the dial 9 along the direction of light irradiation by the light source 100 and is provided in a hollow shape, and the protruding main body 111 that is provided on the protruding tip side and is transmitted from the light source 100. A decorative projecting portion 110 having a diffusion transmitting portion 112 that transmits and diffuses the light emitted to the inside of the projecting main body portion 111 through the region 92 is provided, and the transmission region 92 projects in the light irradiation direction. A diffuse transmission portion 112 and a transmission region 92 at a position where the light transmission width along the transmission region width direction intersecting the light irradiation direction is opposed to the light irradiation direction, which is provided facing the inside of the main body portion 111. It depends on the distance along the irradiation direction of the light.

Therefore, the vehicle display device 1 is decorated by transmitting and diffusing the light radiated from the light source unit 100 to the inside of the projecting main body portion 111 through the transmission region 92 by the diffusion transmission portion 112 of the decoration protrusion 110. The light emitting part is composed. Then, in the vehicle display device 1, the light transmission width of the transmission region 92 differs depending on the distance between the diffusion transmission portion 112 and the transmission region 92, so that the diffusion transmission portion 112 and the transmission region 92 in the transmission region 92 Since the amount of light can be adjusted (dimming) according to the distance, it is possible to suppress the occurrence of unevenness in the light emission of the decorative light emitting portion so that the light is emitted substantially uniformly. As a result, the vehicle display device 1 can properly emit light from the decorative light emitting portion.

In this case, in the vehicle display device 1, for example, a light guide body such as a prism is extended in the internal space portion (optical path space portion 117) of the protruding main body portion 111 formed in a hollow shape, and uniform light is provided in the diffusion transmission portion 112. As compared with the case of irradiating the light emitting portion 112, the light emission unevenness of the diffusion transmission portion 112 can be suppressed without accommodating the light guide or the like in the internal space portion of the protruding main body portion 111. It is possible to suppress the restriction on the design of the above, and for example, the found size of the protruding main body 111 can be made smaller. Further, since the vehicle display device 1 can suppress the light emission unevenness of the diffusion transmission portion 112 without accommodating the light guide body or the like in the internal space portion of the protrusion main body portion 111, for example, the number of component parts can be suppressed. The manufacturing cost can be suppressed, and the manufacturing man-hours can also be suppressed. In this respect as well, the manufacturing cost can be suppressed. Further, since the vehicle display device 1 has a configuration in which light is diffused in two stages of the transmission region 92 of the dial 9 and the diffusion transmission portion 112 forming the decorative light emitting portion, for example, the thickness of the diffusion transmission portion 112 The amount of light in the diffusion transmitting portion 112 can be appropriately adjusted by adjusting the light transmission width of the transmission region 92 after making the above substantially uniform. As a result, the vehicle display device 1 can form the diffusion / transmission portion 112 by making the thickness of the diffusion / transmission portion 112 uniform, for example, so that it is possible to suppress the occurrence of molding defects such as so-called sink marks. it can.

More specifically, according to the vehicle display device 1 described above, the light transmission width is relatively large at a position where the distance between the diffusion transmission portion 112 and the transmission region 92 along the light irradiation direction is relatively long. It is wide and relatively narrow at a position where the distance between the diffuse transmission portion 112 and the transmission region 92 along the light irradiation direction is relatively short. Therefore, in the vehicle display device 1, the distance between the diffuse transmission portion 112 and the transmission region 92 is relatively long, and the amount of light attenuation from the transmission region 92 to the diffusion transmission portion 112 tends to be relatively large. Since the light transmission width of the transmission region 92 is relatively wide at a certain position, the amount of light emitted from the transmission region 92 itself can be relatively large, so that the diffusion is caused by the relatively long distance. It is possible to suppress a drop in the amount of light in the transmitting portion 112. On the other hand, in the vehicle display device 1, the distance between the diffuse transmission portion 112 and the transmission region 92 is relatively short, and the amount of light attenuation from the transmission region 92 to the diffusion transmission portion 112 tends to be relatively small. Since the light transmission width of the transmission region 92 is relatively narrow at a certain position, the amount of light emitted from the transmission region 92 itself can be relatively small, which is caused by the relatively short distance. It is possible to prevent the amount of light in the diffusion transmitting portion 112 from becoming excessive. As a result, the vehicle display device 1 can suppress the occurrence of unevenness in the light emission of the diffusion transmission unit 112 constituting the decorative light emitting portion so that the light is emitted substantially uniformly.

Further, according to the vehicle display device 1 described above, the protruding main body portion 111 is annularly formed with the outer annular portion 114 formed in an annular shape and the outer annular portion 114 inside the outer annular portion 114 at intervals. The inner annular portion 115 is formed in a hollow shape, and the diffusion transmission portion 112 is formed in an annular shape between the outer annular portion 114 and the inner annular portion 115 to connect the outer annular portion 114 and the inner annular portion 115. To do. Therefore, the vehicle display device 1 can form an annular decorative light emitting portion by the outer annular portion 114, the inner annular portion 115, and the diffusion transmission portion 112, and the diffusion transmission portion 112 is decorated with light emission. It can be used in three functions as a decorative member at a site, a diffusing member that transmits and diffuses light, and a connecting member that connects the outer annular portion 114 and the inner annular portion 115. As a result, the vehicle display device 1 can suppress the number of component parts and the manufacturing cost, and in such a configuration, the decorative light emitting portion can be appropriately emitted.

Further, according to the vehicle display device 1 described above, the decorative projecting portion 110 has a decorative ring 113 which is assembled to the protruding main body portion 111 adjacent to the diffusion transmission portion 112. Therefore, the vehicle display device 1 suppresses the manufacturing cost as compared with the case where, for example, the decorative ring 113 and the light emitting body (diffusion transmitting portion 112, etc.) of the decorative light emitting portion are formed by so-called two-color molding. can do.

The vehicle display device according to the embodiment of the present invention described above is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.

In the above description, it has been described that the decorative projecting portion 110 is provided in an annular shape so as to surround the entire measurement display surface 91a corresponding to the speedometer 21 and the tachometer 22, but the present invention is not limited to 1. It may be one or not circular. Further, although the decorative projecting portion 110 has been described as being formed as a part of the facing member 33, the present invention is not limited to this, and the decorative projecting portion 110 may be formed separately from the facing member 33. The decorative protruding portion 110 may be configured not to include the decorative ring 113.

The protruding main body portion 111 described above has been described as being formed by the outer annular portion 114 and the inner annular portion 115, but the present invention is not limited to this. Although the diffusion transmission portion 112 has been described as functioning as a joint plate connecting the outer annular portion 114 and the inner annular portion 115, the present invention is not limited to this.

Further, in the diffuse transmission portion 112 described above, the incident surface width on the incident surface of the light on the back side in the depth direction Y is the irradiation of light between the diffusion transmission portion 112 and the transmission region 92 in the same manner as the light transmission width of the transmission region 92. It may be formed differently depending on the distance along the direction. Here, the width of the incident surface of the diffusion transmitting portion 112 corresponds to the width of the incident surface along the light irradiation direction, in this case, the width direction of the incident surface intersecting the depth direction Y. Typically, the width direction of the incident surface is a direction orthogonal to the depth direction Y and orthogonal to the extending direction (tangential direction) of the incident surface of the diffuse transmission portion 112 at the position, and the incident surface of the diffusion transmission portion 112. The width is typically the width in a direction orthogonal to the depth direction Y and orthogonal to the extending direction of the incident surface of the diffuse transmission portion 112 at the position. In this case, the width of the incident surface of the diffusion transmitting portion 112 depends on the distance between the diffusion transmitting portion 112 at a position facing the light irradiation direction (depth direction Y) and the transmission region 92 along the light irradiation direction. To be different. More specifically, the width of the incident surface of the diffuse transmission unit 112 is relatively wide at a position where the distance between the incident surface of the diffusion transmission unit 112 and the transmission region 92 along the light irradiation direction is relatively long, and the diffusion transmission is performed. The distance between the incident surface of the unit 112 and the transmission region 92 along the light irradiation direction may be relatively short at a position where the distance is relatively short. As a result, the vehicle display device 1 may be able to more appropriately suppress the occurrence of unevenness in the light emission of the decorative light emitting portion including the diffusion transmission portion 112 so that the light is emitted more uniformly.

1 Vehicle display device 9 Dial (plate-shaped member)
91 Light-shielding area 92 Transmission area 100 Light source part 110 Decorative protrusion 111 Protruding main body part 112 Diffusion transmission part 113 Decorative ring (decorative member)
114 Outer annular portion 115 Inner annular portion T1, T2 Distance W1, W2 Light transmission width Y Depth direction (light irradiation direction)

Claims (4)

The light source that irradiates light and
A plate-shaped member including a transmission region that transmits and diffuses light from the light source unit in a light-shielding region that blocks light from the light source unit.
A protruding main body portion that protrudes from the plate-shaped member along the direction of light irradiation by the light source portion and is provided in a hollow shape, and a projecting main body portion that is provided on the protruding tip side of the protruding main body portion and is provided from the light source portion via the transmission region. It is provided with a decorative protruding portion having a diffusion transmitting portion that transmits and diffuses the irradiated light inside the protruding main body portion.
The transmission region is provided so as to face the inside of the projecting main body with respect to the light irradiation direction, and the light transmission width along the transmission region width direction intersecting the light irradiation direction is the light irradiation direction. It is characterized in that it differs depending on the distance between the diffused transmitting portion and the transmitted region at a position facing the light along the irradiation direction of the light.
Vehicle display device. The light transmission width is relatively wide at a position where the distance between the diffusion transmission portion and the transmission region along the light irradiation direction is relatively long, and the light transmission portion and the transmission region of the light. The distance along the irradiation direction is relatively short and relatively narrow,
The vehicle display device according to claim 1. The protruding main body portion is formed in a hollow shape by an outer annular portion formed in an annular shape and an inner annular portion formed in an annular shape inside the outer annular portion at intervals from the outer annular portion.
The diffusion transmission portion is formed in an annular shape between the outer annular portion and the inner annular portion, and connects the outer annular portion and the inner annular portion.
The vehicle display device according to claim 1 or 2. The decorative projecting portion has a decorative member that is attached to the protruding main body portion adjacent to the diffusion transmission portion.
The vehicle display device according to any one of claims 1 to 3.

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