JP2007178199A - Vehicle instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument for a vehicle inhibiting viewing of supporting member through the indication part while supporting the displaying part of the transparent colorless display element with a supporting member. <P>SOLUTION: The vehicle instrument comprises: the dial plate 8 having a transparent and colorless display element; the light emitting diode 19 for the dial plate; and the light path regulation part 10 arranged in the rear surface side of the dial plate 8 for regulating the light path passed through the display part by regulating the outgoing direction of light incident from the LED 19. The dial plate 8 is provided with a protruded part 12 protruding to the reverse side of the light path regulation member 10, on the protruded part 12 the display is provided. In the space S between the protruded part 12 and the light path regulation member 10 the supporting member 13 is arranged with the chamfering part 32 in which the protruding part 12 side is wide, and the light path regulation member 10 side is narrow. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention includes an optical path regulating member that is disposed on the back side of a display plate having a colorless and transparent display unit and regulates the optical path direction of light transmitted through the display unit by regulating the emission direction of light incident from the light source. The present invention relates to a vehicle instrument device.

  In the instrument device arranged on the dashboard of the vehicle, the display and pointer of the instrument are dark and difficult to see when the surroundings are dark, such as at night. To improve visibility. In that case, the light emitted from the display unit or the pointer may irradiate the windshield or side glass of the vehicle, and an image of the instrument is reflected, which may hinder the field of view. Therefore, in order to eliminate such a point, a louver sheet (light path regulating member) is attached to the display plate so that light emitted from the display plate having a wide transmission area is not easily reflected on the windshield or side glass of the vehicle. Some are incorporated (see, for example, Patent Document 1 below).

  Moreover, providing a convex part or a recessed part in the display board for vehicle instruments and providing a three-dimensional effect is performed, for example, there is Patent Document 2 below. In the display plate of Patent Document 2 below, although not disclosed, the display unit is generally provided at least on the inclined surface 1b. In many cases, a transparent colored layer (for example, white) is provided by printing at a portion to be a display portion, and a black non-transparent layer is provided by printing other than the display portion. Further, a colorless and transparent protective layer for preventing scratches is provided on the entire surface of the display board after printing.

  When assembling the louver sheet (light path regulating member) and the display board as described above to the instrument housing of a vehicle instrument device, the wide surface of the display board is supported so that the thin display board is not shaken by vibration. It is desirable to support (support). If it demonstrates with the display board of patent document 2, it is necessary to also support the peripheral flat part 1d in addition to the bottom part 1c (it should be able to also support the inclined surface 1b, but the display part is provided). For example, a ring-shaped support member having a square cross section may be disposed between the bottom portion 1c and the peripheral flat portion 1d.

In addition, when arrange | positioning a louver sheet | seat on the back surface side of a display board, it is desirable that the display part of a display board is colorless and transparent. For example, when the display unit is a white transparent colored layer, when the illumination light whose emission direction is regulated by the louver sheet irradiates the display unit, the light transmitted through the display unit is diffused by the white transparent colored layer, This is because there is also light traveling toward the windshield and side glass of the vehicle.
JP 2004-279104 A Japanese Utility Model Publication No. 6-65825

  However, since the display unit is colorless and transparent as described above, if there is a support member near the display unit on the back of the display plate, the vehicle driver supports the display unit through the display unit when viewed from an oblique direction. The lower side (louver sheet side) of the member is visually recognized, and visibility may be impaired.

  The present invention has been made in view of the above points, and is a vehicle instrument that can prevent a support member from being seen through a display unit while supporting a display plate having a colorless and transparent display unit with the support member. An object is to provide an apparatus.

  In order to achieve the above object, the present invention provides a display panel having a colorless and transparent display unit, a light source that transmits and illuminates the display unit from the back, and emission of light incident from the light source disposed on the back side of the display plate. An optical path regulating member that regulates the direction of the optical path of light transmitted through the display unit by regulating the direction, and the display plate has a projecting part that projects to the opposite side of the optical path regulating member, and the projecting part includes The display portion is provided, and a support member having a wide protrusion portion side and a narrow optical path restriction member side is disposed in a space between the protrusion portion and the optical path restriction member.

  Further, a diffusion plate is disposed on the back side of the optical path regulating member.

  In addition, the display unit is formed by providing a light shielding layer on the surface side of the colorless and transparent substrate except for the part to be the display unit, and the substrate part corresponding to the display unit is in an unprocessed state, A protective layer is provided on the light shielding layer.

  While supporting the display board which has a colorless and transparent display part with a support member, the instrument device for vehicles which can prevent that a support member is visually recognized through a display part can be obtained.

  The present invention will be described based on an embodiment. FIG. 1 is a partial front view of a vehicular instrument device, and FIG. 2 is a partial cross-sectional view (A-A cross section in FIG. 1) of the vehicular instrument device. FIG. 3 is a partial cross-sectional view (X portion in FIG. 2) of a display board used in a vehicle instrument device, and FIG. 4 is a partial cross-sectional view (in FIG. BB cross section).

  The vehicle instrument device includes, for example, a pointer-type tachometer 1. The tachometer 1 includes a rigid circuit board 2 and an instrument body 4 that is mounted on the back side of the circuit board 2 in a conductive state with the circuit board 2 and has a pivot shaft 3 that extends forward through the circuit board 2. The indicator 6 provided with the instruction unit 5, the display plate 8 provided behind the indicator 6 and provided with the display unit 7 to be instructed by the instruction unit 5, and the diffusion arranged behind the display plate 8 A plate 9, a light path regulating member 10 disposed between the display plate 8 and the diffusion plate 9, a housing 11 for holding the display plate 8, the light path regulating member 10 and the diffusion plate 9, and a protrusion of the display plate 8 12 and a support member 13 disposed in a space S between the optical path regulating member 10 and the optical path regulating member 10.

  Further, a facing member made of, for example, black synthetic resin, having a synthetic resin cover 14 covering the back side of the circuit board 2 and an opening 15 disposed on the front side of the peripheral edge of the display board 8 and defining a visible region of the display board 8. 16, a see-through plate 17 made of, for example, a black transparent synthetic resin, disposed on the front side of the display board 8, the look-back member 16, and the like, and the indication unit 5 of the pointer 6 mounted on the circuit board 2 around the rotation shaft 3. The indicator light-emitting diode 18 as a light source for illuminating the display panel and the display panel light-emitting diode 19 as a light source for illuminating the display unit 7 of the display panel 8 are provided. The see-through plate 17 may be colorless and transparent.

  The housing 11 is made of, for example, a white synthetic resin having a light shielding property, and includes a cylindrical portion 20 disposed between the display board 8 and the circuit board 2 so as to surround the pointer light emitting diode 18, and a display board light emitting diode 19. A reflecting wall 21 arranged in an inclined manner around the, and a mounting portion 22 on which the diffusion plate 9 and the like are mounted.

  The diffusion plate 9 is made of, for example, a white translucent synthetic resin that is light transmissive. The diffusing plate 9 causes the light from the light emitting diode 19 for the display plate to be diffused and enter the optical path regulating member 10, and illuminates the display portion 7 of the display plate 8 almost uniformly with the light emitted from the optical path regulating member 10. Is. Therefore, it is not limited to a white translucent material, for example, a white transmissive layer may be printed on a colorless transparent material, or fine wrinkles may be given. Note that the diffuser plate 9 may be omitted if satisfactory transmitted illumination is obtained.

  The display board 8 prints, for example, a black light-shielding layer 24 on the surface side of the colorless and transparent substrate 23, except for a portion that becomes a display portion 7 such as a scale or number indicating the engine rotational speed of the vehicle, and a ground portion 25. Form. In order to prevent the ground portion 25 (light shielding layer 24) from being scratched, a colorless and transparent protective layer 26 is provided on the ground portion 25 excluding the display portion 7 by printing. Processing such as printing is not performed on the 23 portions of the substrate serving as the display unit 7.

  Further, the display board 8 is provided with a protruding portion 12 that protrudes on the opposite side of the optical path regulating member 10 (toward the see-through board 17 side so as to be separated from the optical path regulating member 10) in order to give a stereoscopic effect. The protrusion 12 includes an inclined portion 28 formed to be inclined around a circular flat base 27 and a peripheral flat portion 29 formed on the periphery of the inclined portion 28. In the present embodiment, the display 12 is a display. Of the portion 7, a scale display portion 7 a is provided on the inclined portion 28, and a number display portion 7 b and a character display portion 7 c are provided on the base portion 27. The scale display portion 7a is connected by an arc on the outer peripheral side. The protrusion 12 is formed by press molding or pressure molding after providing each printing layer (the light shielding layer 24 and the protective layer 26). In FIG. 1, the display portion 7 is shown in black and the ground portion 25 is shown in colorless.

  The optical path regulating member 10 is composed of, for example, a “light control film” manufactured by Sumitomo 3M, and a plurality of louvers 30 arranged in parallel are sandwiched and integrated with, for example, a transparent polyethylene terephthalate film 31 (see FIG. 4). Has the role of regulating the direction of light passing through. In many cases, a vehicle instrument device is disposed at a position slightly behind the dashboard, and light emitted from the instrument device is difficult to be reflected on the windshield. Therefore, the optical path regulating member 10 that determines the arrangement direction of the louvers 30 is used so that the light emitted from the display plate 8 does not go toward the side glass of the vehicle. A broken line partially shown in FIG. 1 indicates the arrangement direction (angle) of the louver 30 of the optical path regulating member 10. That is, in the present embodiment, the louvers 30 are arranged so that the longitudinal direction thereof is substantially vertical (in FIG. 1, the louvers 30 are arranged in parallel in the left-right direction).

  The support member 13 is a space S formed between the display plate 8 and the optical path regulating member 10 by providing the projection 12, and does not block between the scale display unit 7 a and the optical path regulating member 10. It arrange | positions so that the protrusion part 12 of the display board 8 may be supported. In the present embodiment, it is disposed on the back side of the peripheral flat portion 29 of the display panel 8 and has a square cross section and a ring shape. Further, the inner peripheral surface is provided with a chamfered portion 32 that is inclined in a divergent manner from the peripheral flat portion 29 side to the optical path regulating member 10 side. That is, the cross section of the support member 13 is wide on the protruding portion 12 side of the display plate 8 and narrow on the optical path regulating member 10 side.

  The pointer 6 is made of a colorless and transparent synthetic resin, and has an elongated indicator portion 5 in which a two-layer foil made of, for example, red and black is hot stamped on the back surface (a black foil on the display board 8 side), and a black synthetic resin, for example. A pointer shaft 33, a first pointer optical path regulating member 34 disposed on the surface of the pointing unit 5, a second pointer optical path regulating member 35, a peripheral edge of the second pointer optical path regulating member 35, and A light shielding cover 36 made of black synthetic resin covering the front side of the pointer shaft 33 and the like and a balancer 37 made of copper alloy are provided, and the pointer shaft 33 is press-fitted into the distal end side of the rotating shaft 3 of the instrument body 4. Thus, the pointer 6 is fixed to the instrument body 4.

  Although detailed description and illustration are omitted, the first pointer optical path regulating member 34 and the second pointer optical path regulating member 35 have the same function as the optical path regulating member 10 disposed on the back side of the display plate 8. That is, it is for preventing the light emitted from the surface of the indicating unit 5 from going toward the side glass. Here, since the pointer 6 rotates, the first pointer optical path regulating member 34 and the second pointer varying direction (angle) of the louver are made different so that the window 6 is difficult to be reflected wherever the position of the pointer 6 is. The pointer optical path regulating members 35 are stacked. In the present embodiment, the arrangement direction of the louvers of the first pointer optical path restriction member 34 is along the longitudinal direction of the indicating section 5, and the arrangement direction of the louvers of the second pointer optical path restriction member 35 is indicated. It is parallel to the direction orthogonal to the longitudinal direction of the part 5.

  In the vehicular instrument device configured as described above, for example, when the light emitting diode 19 for display panel that emits white light emits light, the illumination light directly shines on the diffusion plate 9 or is reflected by the reflection wall 21 of the housing 11 and diffused. The plate 9 is irradiated. Then, the light diffused by the diffusion plate 9 passes through the optical path regulating member 10 toward the display plate 8 side, and the display unit 7 is visually recognized in white. At this time, since the direction of the light passing therethrough is regulated by the optical path regulating member 10, the light emitted from the display unit 7 does not go in the left-right direction. That is, the emitted light is prevented from being reflected on the side glass of the vehicle.

  In addition, since the display unit 7 is colorless and transparent, the display unit 7 can be seen through the display unit 8 behind the display panel 8, particularly the support member 13. However, the support member 13 is provided with a chamfered part 32. For this reason, even when the display unit 7 (scale display unit 7a) is viewed from an oblique direction (for example, the Z direction in FIG. 2), the support member 13 is difficult to see through the display unit 7. It has a configuration.

  For example, when the pointer light emitting diode 18 that emits red light emits light from the pointer 6, light incident from the base side of the indicating unit 5 is guided to the distal end side of the indicating unit 5 and reflected by the red foil of the two-layer foil. Then, the light is emitted from the surface of the instruction unit 5. This light is emitted forward (driver side) through the first and second pointer optical path regulating members 34 and 35 and is visually recognized in red.

  At this time, the light emitted from the surface of the indicator 5 is restricted by the first pointer optical path restricting member 34 in the direction orthogonal to the longitudinal direction of the indicator 5, and the second pointer optical path restricting member 35. Therefore, the light emitted from the second pointer optical path restricting member 35 is restricted from being directed in both the longitudinal direction of the indicator 5 and the direction orthogonal to the longitudinal direction. Is done. Therefore, even when the pointer 6 is rotated, it is difficult to project a window on the side glass of the vehicle. Note that the pointer optical path regulating members 34 and 35 may not be provided if they do not hinder the visibility.

  In this manner, the display panel 8 having the colorless and transparent display unit 7 and the optical path regulating member 10 disposed on the back side of the display board 8 are provided, and the protrusion 12 and the optical path regulating member 10 provided on the display board 8 are provided. By disposing the support member 13 provided with the chamfered portion 32 in which the protruding portion 12 side is wide and the optical path regulating member 10 side is narrow in the space S between the two, the display plate 8 is supported on the widest possible surface. However, even when the display unit 7 is viewed from an oblique direction, a vehicular instrument device that can prevent the support member 13 from being viewed through the display unit 7 can be obtained.

  Further, by disposing the diffusing plate 9 on the back surface side of the optical path regulating member 10, it is possible to make the light from the light emitting diode 19 for display panel enter the optical path regulating member 10 while diffusing. That is, the display unit 7 of the display panel 8 can be more uniformly transmitted and illuminated by substantially equalizing the light incident on the optical path regulating member 10. Further, the diffusion plate 9 also serves to support the optical path regulating member 10 and the display plate 8.

  In addition, since the display layer and the colorless and transparent protective layer 26 are not provided at the 23 locations corresponding to the display unit 7 of the display panel 8, the display unit 7 is colorless and transparent, and is not processed. 7 is not diffused at the seven display portions, and is easily emitted from the display portion 7 in a state where the direction of the light is regulated by the optical path regulating member 10, and is difficult to go toward the side glass direction of the vehicle.

  The present invention is not limited to the above-described embodiment. For example, the support member 13 is a chamfered portion 32 inclined from the peripheral flat portion 29 side to the optical path regulating member 10 side. However, the display plate 8 is as wide as possible. The projection plate 12 side of the display plate 8 is wide and the optical path regulating member 10 side is narrow so that the support member 13 is difficult to be seen through the display unit 7 when the display unit 7 is viewed. In this case, the shape is arbitrary.

  Further, the shape of the protruding portion 12 provided on the display board 8 is not limited to the above embodiment. Regarding the display unit 7, in the embodiment, the scale display unit 7 a is provided on the inclined unit 28, and the numeric display unit 7 b and the character display unit 7 c are provided on the base unit 27, but all the display units 7 are provided on the inclined unit 28. It may be provided. The display part should just be provided in the protrusion part 12 at least, and the support member 13 should just be arrange | positioned so that a display part may not be hidden from the back.

  Further, when the protrusion 12 is provided on the peripheral side of the display plate 8 as in the above embodiment, the support member 13 may be disposed in the space S between the protrusion 12 and the optical path regulating member 10. This is the most effective for 8 swings. Therefore, even if there is a protrusion other than the protrusion 12 described in the embodiment (regardless of the presence or absence of the display portion, for example, near the center of the display plate 8), it is not always necessary to dispose the support member at that position Absent. Moreover, you may provide a support member partially as needed, without providing over the perimeter corresponding to the periphery of a display board. Furthermore, the support member and the housing 11 may be integrated.

The partial front view of the instrument device for vehicles of the present invention. The fragmentary sectional view of the instrument device for vehicles (AA section in Drawing 1). The fragmentary sectional view of the display board used for the instrument device for vehicles (X section in Drawing 2). The fragmentary sectional view of the optical path control member used for the instrument device for vehicles (equivalent to the BB section in Drawing 1).

Explanation of symbols

7 Display unit 8 Display plate 9 Diffusion plate 10 Optical path regulating member 12 Protruding portion S Unoccupied space 13 Support member 19 Light emitting diode for display plate (light source)
32 Chamfer

Claims (3)

  A display plate having a colorless and transparent display unit, a light source that transmits and illuminates the display unit from behind, and a display unit that is disposed on the back side of the display plate and regulates an emission direction of light incident from the light source An optical path regulating member that regulates the optical path direction of the transmitted light, and the display plate has a projecting part projecting on the opposite side of the optical path regulating member, and the display part is provided on the projecting part, A vehicular instrument device, wherein a support member having a wide protrusion portion side and a narrow optical path restriction member side is disposed between the protrusion portion and the optical path restriction member.   The vehicular instrument device according to claim 1, wherein a diffusion plate is disposed on a back side of the optical path regulating member.   The display part is formed by providing a light shielding layer on the surface side of a colorless and transparent substrate except for the part to be the display part, and the substrate part corresponding to the display part is in an unprocessed state, and the light shielding layer The vehicular instrument device according to claim 1, wherein a protective layer is provided thereon.

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