JP4996209B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly to a display device including a dial plate on which an index is formed.

  As the conventional display device described above, for example, as shown in FIG. 7, an indicating device used for a meter such as a speedometer 10 or a tachometer 11 mounted on a vehicle is generally known. As shown in FIG. 8, these meters 10 and 11 include a dial 12 having a scale, numbers, letters, symbols, and other indicators formed on the surface, a pointer 13 disposed in front of the dial 12, and letters An internal unit 14 that is arranged on the back side of the plate 12 and drives the pointer 13 according to a measured amount such as a vehicle speed or an engine speed, for example, and a wiring board 15 that is provided on the back side of the dial 12 and on which the internal unit 14 is mounted The light source 16 is mounted on the wiring board 15 and illuminates the dial 12 from the back surface, and the reflection surface 17 reflects the light from the light source 16 to the dial 12.

  Further, the meter accommodates the dial plate 12, the pointer 13, and the wiring board 15 described above, a case 18 having a reflective surface 17, a back cover 19 that covers the back surface of the case 18, and a front glass 20 that covers the front surface of the case 18. And.

  The dial 12 includes a transparent substrate and a light-shielding layer (diaphragm light-shielding layer) provided in front of the transparent substrate and from which the index is removed.

  According to the above configuration, the dial 12 is illuminated by natural light from the front during the daytime, and the indicator can be visually recognized. At night, the dial 12 is illuminated by the light source 16 from the back, and the indicator shines and the indicator can be visually recognized.

  However, the display device configured as shown in FIGS. 7 and 8 has a problem that the decoration effect is insufficient and a novel display cannot be performed.

  In view of the above, the present invention focuses on the problems as described above, and an object thereof is to provide a display device capable of performing a novel display.

In order to solve the above-mentioned problem, the invention according to claim 1 is the display device including the dial plate on which the index is formed, wherein a plurality of convex and / or concave scales follow the pointer on the dial plate. a light guide plate having a graduation formed of a transparent member formed Te, and the dial back side arranged a light guide plate as said purpose up portion becomes visible from the front, it is turned to the the light the dial light source is guided to the entire light guide plate is arranged, and arranged wiring board on the back side of the light guide plate, Rutotomoni disposed apart from the light guide plate on the rear side of the scale portion of the light guide plate And a scale background plate disposed on the front side of the wiring board and having a background color and visually recognized on the back side of the scale.

  According to invention of Claim 1, a light-guide plate is arrange | positioned at the back side of a dial so that a scale part can be visually recognized from the front, and a scale background board is a light-guide plate on the back surface of the scale part of a light-guide plate. They are spaced apart. According to the above configuration, the scale is visually recognized as floating between the dial on the front side and the scale background plate on the back side, and the scale display is stereoscopic in both directions of the front side and the back side. Can be given.

  The invention according to claim 2 is characterized in that the dial is provided so as to cover the scale portion of the light guide plate, and a portion corresponding to the index provided on the front surface of the transparent substrate is removed. The display device according to claim 1, further comprising a dial light shielding layer removed in a strip shape along a plurality of scales.

  According to the second aspect of the present invention, the dial is provided so as to cover the scale portion of the light guide plate, and a portion corresponding to the index provided on the front surface of the transparent substrate is removed, and a plurality of scales are provided. And a dial light-shielding layer removed in a strip shape. That is, since there is a transparent dial plate in front of the scale portion, the scale is visually recognized as floating on the rear side of the dial plate, and a three-dimensional feeling can be given by the scale display.

  According to a third aspect of the present invention, the light guide plate has a step portion provided so as to protrude to the front side along the plurality of scales, and the step portion is the dial light shielding layer of the transparent substrate. The display device according to claim 2, wherein: is provided on a back surface of a portion removed in a strip shape along the plurality of scales.

  According to invention of Claim 3, a light-guide plate has a step part provided so that it might protrude to the front side along several scales, and a step part has a plurality of dial light-shielding layers of a transparent substrate. Since it is provided on the back of the stripped part along the scale, the side farther from the scale than the step of the light guide plate is visible on the front side of the scale. be able to.

  The invention according to claim 4 is characterized in that the scale background plate is provided with a taper that approaches the light guide plate as it moves away from or approaches an index (number) formed on the dial. 3. The display device according to any one of 3 above.

  According to the invention of claim 4, since the scale background plate is provided with a taper that approaches the light guide plate toward the outer periphery of the scale portion, the scale background plate is visually recognized as if there is a scale back plate behind the scale. The display can give a stereoscopic effect and a sense of depth.

  As described above, according to the first aspect of the present invention, the scale is visually recognized as floating between the dial on the front side and the scale background plate on the back side, and the scale display is displayed on the front side and the back side. Since a stereoscopic effect can be given to both directions on the side, a novel display can be performed.

  According to the invention described in claim 2, since there is a transparent dial plate in front of the scale portion, the scale is visually recognized as floating on the rear side of the dial plate, so that a more innovative display can be performed. it can.

  According to the third aspect of the present invention, since the side away from the scale by the step portion of the light guide plate is visually recognized in front of the scale, it is possible to give a stereoscopic effect by the scale display. It can be performed.

  According to the invention described in claim 4, since it is visually recognized that the scale back plate is behind the scale, and a three-dimensional feeling and a sense of depth can be given by the scale display, a more innovative display can be performed. .

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a combination meter incorporating the display device of the present invention. FIG. 2 is a partial front view of the first embodiment with the dial of the combination meter shown in FIG. 1 removed. FIG. 3 is a partial cross-sectional view taken along the line II of the combination meter shown in FIG. 1 in the first embodiment.

  The combination meter 1 is attached to, for example, an instrument panel of a vehicle. The combination meter 1 includes a speedometer 21 (display device) for instructing the speed of the vehicle, a tachometer 22 (display device) for instructing the engine speed of the vehicle, and a liquid crystal display for displaying various information such as a travel distance ( LCD) 23 and a warning 24 are provided.

  The combination meter 1 includes a casing 25 that accommodates a speedometer 21, a tachometer 22, an LCD 23, and a warning 24, a facing 26 attached to the front of the casing 25, and a front glass 27 attached to the front of the casing 25 and the facing 26. And a wiring board 28 (FIG. 3) provided on the back side of the casing 25.

  The counter 26 is provided with an opening in a portion facing the speedometer 21, the tachometer 22, the LCD 23, and the warning 24, and hides the wiring board 28, the internal unit, and the like housed in the casing 25.

  Next, the configuration of the speedometer 21 will be described. Note that the tachometer 22 has substantially the same configuration as the speedometer 21, and therefore the description thereof is omitted here. As shown in FIGS. 1 to 3, the speedometer 21 includes a dial plate 29, a light guide plate 30 made of a transparent member, a scale background plate 31, a pointer 32, a warning 33 (including a warning light source L3), It has a plurality of pointer light sources L1 and a plurality of dial light sources L2.

  The plurality of pointer light sources L1 are arranged on the wiring board 28 so as to surround the pointer shaft 34 as shown in FIG. The plurality of dial light sources L2 are arranged on the wiring board 28 so as to surround the pointer light source L1. A light shielding wall is formed around the pointer light source L1 by the casing 25, and the light from the pointer light source L1 does not enter the light guide plate 30 and the light from the dial light source L2 does not enter the pointer 32. It is like that. The wiring board 28 is provided with a plurality of warnings 33 for emitting and displaying light. A light shielding wall is formed around each warning 33 by the casing 25 so that the light from the warning light source L3 does not enter the light guide plate 30.

  The dial plate 29 has a disk shape, and a number (= indicator) indicating the speed of the vehicle is formed along the outer periphery thereof. The dial plate 29 is provided with an opening portion 35 for a pointer shaft 34 of a pointer 32 and a warning display portion 36.

  As shown in FIG. 3, the dial plate 29 includes a transparent substrate 37, a decorative print layer 38 provided in front of the transparent substrate 37, and a light shielding layer 39 as a dial plate light shielding layer provided in front of the decorative print layer 38. have. The transparent substrate 37 is provided in a disc shape. The said transparent substrate 37 is provided so that the scale ring part 41 as a scale part mentioned later may be covered.

  The decorative print layer 38 is provided by removing a portion corresponding to the index and a portion facing a scale ring portion 41 of the light guide plate 30 described later. The light shielding layer 39 is provided by removing a portion corresponding to the decoration line L in addition to a portion corresponding to the index and a portion facing a scale ring portion 41 described later. That is, the light shielding layer 39 is removed in a strip shape along a scale 42 described later.

  The light guide plate 30 is provided on the back side of the dial plate 29. The light guide plate 30 includes a light guide part 40 and a scale ring part 41. The light guide 40 guides the light from the dial light source L2. The scale ring portion 41 is provided continuously to the outer periphery of the light guide portion 40. The scale ring portion 41 has a plurality of concave scales 42 formed on the back surface along the indicators on the dial plate 29. The light guide plate 30 has an inner peripheral side supported by the casing 25 and an outer peripheral side supported by a scale background plate 31 described later.

  The scale background plate 31 has the background color of the scale ring part 41. The scale background plate 31 is disposed on the casing 25 along the scale ring portion 41. The scale background plate 31 is disposed on the back surface of the scale ring portion 41 of the light guide plate 30 so as to be separated from the light guide plate 30. The scale background plate 31 is provided with a taper 43 that approaches the light guide plate 30 as it moves away from the index on the dial plate 29.

  The scale ring portion 41 is disposed on the back surface of the dial 29 where neither the decorative print layer 38 nor the light shielding layer 39 is formed. As a result, the scale ring portion 41 can be viewed from the front through the transparent substrate 37 of the dial plate 29. The pointer 32 is composed of a light guide member, and the light from the pointer light source L1 is guided.

  A description will now be given of how light travels through the pointer light source L1 and dial light source L2 of the combination meter 1 configured as described above. When the pointer light source L1 is turned on, the light from the pointer light source L1 guides the pointer 32 and is guided to the driver's viewpoint.

  When the dial light source L2 is turned on, the light from the dial light source L2 is guided to the entire light guide plate 30. The light guided through the light guide section 40 of the light guide plate 30 passes through a portion corresponding to the index on the dial plate 29 where neither the decorative print layer 38 nor the light shielding layer 39 is formed, and is guided to the driver's viewpoint. As a result, the indicator on the dial plate 29 is shined and visually recognized.

  The light guided through the scale ring portion 41 of the light guide plate 30 is reflected by the concave scale 42 and passes through the transparent substrate 37 of the dial plate 29, and then visually recognized from the driver's viewpoint. For this reason, the scale 42 is particularly bright and visible. Among the light guided through the scale ring portion 41, there is also light guided to the driver viewpoint after being reflected by the scale background plate 31. Thereby, the scale background plate 31 is visually recognized on the back side of the scale 42.

  According to the speedometer 21 and the tachometer 22 described above, the light guide plate 30 is disposed on the back side of the dial plate 29 so that the scale ring portion 41 is visible from the front, and the scale background plate 31 is provided on the light guide plate 30. The scale ring portion 41 is disposed on the back surface of the scale ring portion 41 so as to be separated from the light guide plate 30. Thereby, the scale 42 is visually recognized as floating between the dial plate 29 and the scale background plate 31, and the scale 42 can be given a three-dimensional feeling in both the front side and the back side direction. Display can be performed. For example, compared to a display device in which the light guide plate 30 is disposed in front of the dial plate 29 and the scale background plate 31 and has a stereoscopic effect only on the back side of the scale 42, the speedometer 21 and the tachometer 22 described above. Can give the scale 42 a three-dimensional feeling in both the front side and the back side, resulting in a novel display.

  Further, according to the speedometer 21 and the tachometer 22 described above, the dial plate 29 is provided so as to cover the scale ring portion 41, and a portion corresponding to the index and the scale on the front surface of the transparent substrate 37. A light shielding layer 39 from which a portion facing the ring portion 41 is removed. That is, since there is the transparent substrate 37 in front of the scale ring portion 41, the scale 42 is visually recognized as floating on the rear side of the dial plate 29, and the display of the scale 42 can give a stereoscopic effect. A novel display can be performed.

  According to the display device of the speedometer 21 and the tachometer 22 described above, the scale background plate 31 is provided with the taper 43 that approaches the light guide plate 30 as it moves away from the index. Since the display of the scale 42 can give a stereoscopic effect and a sense of depth, a more innovative display can be performed.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a front view of the light guide plate in the second embodiment. FIG. 5 is a partial cross-sectional view taken along the line II of the combination meter shown in FIG. 1 according to the second embodiment. 4 and 5, the same reference numerals are given to the same parts as those in the first embodiment described above with reference to FIGS.

  The difference from the first embodiment is that a step 44 is provided. The step portion 44 is provided on the scale ring portion 41 so as to protrude to the front side along the side away from the pointer shaft 34 in the longitudinal direction of the plurality of scales 42. As shown in FIG. 5, the stepped portion 44 is provided on the back surface of the transparent substrate 37 where the light shielding layer 39 is stripped along the plurality of scales 42 so that the stepped portion 44 can be viewed from the front through the transparent substrate 37. Is provided. That is, the stepped portion 44 is provided at a position facing the portion where the light shielding layer 39 of the transparent substrate 37 is removed along the plurality of scales 42 in a band shape.

  According to the above configuration, the side away from the scale 42 by the step portion 44 of the light guide plate 30 is visually recognized on the one-step front side from the scale 42. For this reason, since the scale 42 is visually recognized by the step portion 44 of the light guide plate 30 so as to be further on the back side than the side away from the scale 42, the scale display can provide a three-dimensional effect, and is more innovative. Display can be made.

  In the second embodiment, as shown by the shaded area in FIG. 4, the front surface of the light guide 40 facing the numerals indicating the vehicle speed of the dial plate 29 is provided with a texture S. Due to the texture S, the numbers formed on the dial plate 29 are more brightly brilliant and visually recognized.

  In the second embodiment described above, the step portion 44 is provided on the scale ring portion 41 so as to protrude to the front side along the side away from the pointer shaft 34 in the longitudinal direction of the plurality of scales 42. However, the present invention is not limited to this. For example, you may provide so that it may protrude to the front side along the side which approaches the pointer shaft 34 of the longitudinal direction of the some scale 42. As shown in FIG.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a partial cross-sectional view taken along the line II of the combination meter shown in FIG. 1 according to the third embodiment. By the way, as shown in FIG. 5, when the texture S is applied to the front surface of the light guide unit 40, the texture S appears on the back surface of the scale ring unit 41 when viewed from the driver viewpoint eye. That is, since the light reflected by the texture S reaches the driver's viewpoint eye, there is a problem that color unevenness occurs in the scale ring portion 41.

  Therefore, in the third embodiment, as shown in FIG. 6, R is attached to the back surface of the scale ring portion 41 on the light guide portion 40 side, and the emboss S is reflected on the back surface of the scale ring portion 41 as viewed from the driver viewpoint eye. I tried not to. That is, the unevenness of the color of the scale ring portion 41 can be prevented by preventing the light reflected by the texture S from reaching the driver viewpoint eye.

  In addition, according to the 1st-3rd embodiment mentioned above, although nothing was provided in the part facing the scale ring part 41 of the transparent substrate 37, this invention is not limited to this. The scale ring portion 41 only needs to be visible from the front, and may be applied to a portion of the transparent substrate 37 facing the scale ring 41 as long as the printing is transparent.

  Moreover, according to the 1st-3rd embodiment mentioned above, although the scale 42 was provided in the concave shape in the back surface of the scale ring part 41, this invention is not limited to this. For example, the scale 42 may be provided in a convex shape on the back surface of the scale ring portion 41. Further, the scale 42 may be provided in a concave shape or a convex shape in front of the scale ring portion 41. The scale 42 may be provided with a mixture of concave and convex shapes.

  Moreover, according to the 1st-3rd embodiment mentioned above, although the transparent substrate 37 provided so that the scale ring part 41 might be covered, this invention is not limited to this. For example, the dial plate 29 may be provided so as not to cover the front surface of the scale ring portion 41 so that the scale ring portion 41 is visible from the front.

  Further, according to the first to third embodiments described above, the scale ring portion 41 and the light guide portion 40 that shines the indicator portion of the dial plate 29 are integrally formed. However, the present invention is not limited to this. Not a thing. Each may be formed separately.

  Further, according to the first to third embodiments described above, the scale background plate 31 is provided with the taper 43 that approaches the light guide plate 30 as the distance from the index on the dial plate 29 is increased, but the present invention is limited to this. It is not a thing. For example, the taper 43 may be a taper that approaches the light guide plate 30 as it approaches the index. Further, the scale background plate 31 may be provided apart from the light guide plate 30, and the taper 43 may not be provided.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

It is a combination meter incorporating the display device of the present invention. It is a partial front view in the state where the dial of the combination meter shown in Drawing 1 in a 1st embodiment was removed. It is the II sectional view taken on the line of the combination meter shown in Drawing 1 in a 1st embodiment. It is a front view of the light-guide plate in 2nd Embodiment. It is II tip partial sectional drawing of the combination meter shown in FIG. 1 in 2nd Embodiment. It is II tip partial sectional drawing of the combination meter shown in FIG. 1 in 3rd Embodiment. It is a front view which shows an example of the conventional display apparatus. It is the II sectional view taken on the line of the display apparatus shown in FIG.

Explanation of symbols

21 Speedometer (display device)
22 Tachometer (display device)
29 Dial 30 Light guide plate 31 Scale background plate 37 Transparent substrate 39 Light shielding layer (Dial light shielding layer)
41 Scale ring part (scale part)
42 Scale 43 Taper 44 Step

Claims (4)

In a display device including a dial plate on which an index is formed,
A light guide plate having a scale portion made of a transparent member having a plurality of convex and / or concave scales formed along the pointers on the dial, the scale portion being visible from the front. A light guide plate arranged on the back side of the dial,
A light source for a dial plate that guides the light to the entire light guide plate when lit, and a wiring board arranged on the back side of the light guide plate,
Disposed apart from the light guide plate on the rear side of the scale portion of the light guide plate Rutotomoni, is disposed on the front side of the wiring board, it has a background color, scale background is visible on the back side of the scale The board,
A display device comprising:   The dial plate is provided so as to cover the scale portion of the light guide plate, and a portion corresponding to the indicator provided on the front surface of the transparent substrate is removed and is formed in a strip shape along the plurality of scales. The display device according to claim 1, further comprising a dial light shielding layer removed. The light guide plate has a step portion provided so as to protrude to the front side along the plurality of scales,
The display device according to claim 2, wherein the step portion is provided on a back surface of a portion of the transparent substrate where the dial light-shielding layer is stripped along the plurality of scales.   The display device according to claim 1, wherein the scale background plate is provided with a taper that approaches the light guide plate as it moves away from or approaches an index formed on the dial.

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