JP2009180658A - Pointer instrument device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointer instrument device capable of reducing cost by reducing the number of components for illumination. <P>SOLUTION: The pointer instrument device 1 includes a light source 10, a light guide 11 for guiding light from the light source 10, a display element 7 illuminated by the light source 10, a case 9 with at least the display element 7 and the light guide 11, a dial plate 3 with an index part 3a positioned on the periphery of the display element 7, a pointer 4 for indicating the index part 3a, and a drive device 5 for turning the pointer 4. The case 9 is provided with a plurality of irradiation parts 9c, 9d, 9e for irradiating light from the light source 10 to at least two objects among the display element 7, the dial plate 3 and the pointer 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to, for example, a pointer-type instrument device provided with a pointer and a dial, and more particularly to a pointer-type instrument device provided with a display at the center of rotation of the pointer.

The thing of the following patent document 1 is known as a conventional pointer type instrument apparatus. A conventional pointer-type instrument device includes a display, a dial plate having an indicator portion positioned around the indicator, a pointer indicating the indicator portion, and a light source that illuminates the indicator and the pointer, respectively. And a light guide that guides the light from each light source to the display and the pointer, respectively, and a drive device that is disposed on the back side of the display and rotates the pointer.
Japanese Patent Laid-Open No. 2006-118892

  However, in such a pointer-type instrument device, a light source and a light guide have to be provided for display illumination and pointer illumination, respectively. In addition, a separate light source must be provided for dial illumination. Therefore, the conventional pointer-type instrument device has a problem that the number of parts is large and the cost cannot be reduced.

  Therefore, the present invention has been made in view of these problems, and provides a pointer-type instrument device capable of reducing the number of parts for illumination and reducing the cost.

  The present invention provides a light source, a light guide for guiding light from the light source, a display element illuminated by the light source, a case body including at least the display element and the light guide, and the display element In a pointer-type instrument device comprising: a dial plate including an indicator portion positioned around, a pointer indicating the indicator portion, and a driving device that rotates the pointer, the case body includes the display element. A plurality of irradiation parts for irradiating light of the light source is provided on at least two of the dial and the pointer.

  According to the present invention, one of the plurality of irradiation units is a first irradiation unit that irradiates the display element with light from the light source.

  In the present invention, one of the plurality of irradiation units is a second irradiation unit that irradiates the dial with light from the light source.

  In the present invention, one of the plurality of irradiation units is a third irradiation unit that irradiates the pointer with the light of the light source.

  Further, the present invention provides a first irradiating unit that irradiates the display element with the light from the light source, a second irradiating unit that irradiates the dial with the light from the light source, and the pointer. A third irradiation unit for irradiating light is provided.

  In the present invention, the light guide has one light receiving surface for receiving light from the light source.

  In the present invention, the light guide includes a luminance adjustment unit corresponding to the irradiation unit.

  In the present invention, the brightness adjusting portion is formed of a fine concave portion and / or a convex portion.

  In the present invention, the case body is provided with an opening in which the first, second, and third irradiation portions are integrally formed.

  In the present invention, the case body is provided with a second opening in which the second irradiation section and the third irradiation section are integrally formed.

  According to the present invention, it is possible to provide a pointer-type instrument device that can achieve the intended purpose, reduce the number of parts for display, pointer, and dial illumination, and reduce the cost.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an embodiment of the present invention.

  In FIG. 1, the pointer-type instrument device 1 according to the present embodiment is mainly composed of a display 2, a dial plate 3, a pointer 4, a driving device 5 and a circuit board 6. In addition, 16 is a turn made of synthetic resin, and visually recognizes the pointer-type instrument device 1 through the opening 16a.

  The display 2 displays information on the vehicle and the like, and includes a display element 7 and a lighting device 8.

  The dial plate 3 is made of a synthetic resin that can transmit light, and is disposed on the display 2. The dial plate 3 is provided with a through hole 3b through which the display element 7 is exposed at the center thereof, and an indicator portion 3a made of scales or characters positioned around the display element 7 (through hole 3b) of the display device 2. It has. In this embodiment, the indicator portion 3a is formed of a light-transmitting paint, and the ground portion is formed of a light-shielding paint.

  The pointer 4 indicates the index portion 3a, and the distal end side indicating portion 4a and the driving device 5 side fixing portion 4b are formed by integrally forming different synthetic resins. The instruction portion 4a is made of a synthetic resin that can transmit light, and the fixing portion 4b is made of a synthetic resin that does not transmit light. The pointer 4 is fixed to a pointer shaft 5a provided in the driving device 5 by a fixing portion 4b. In the present embodiment, as shown in FIG. 2, the instruction unit 4 a has a bowl shape and bypasses the outer periphery of the display device 2.

  The drive device 5 is an electric motor and rotates the pointer 4. In this embodiment, a stepping motor is employed.

  The circuit board 6 is provided with a wiring pattern (not shown) made of a conductive member such as copper on a hard insulating material such as glass epoxy resin.

  The display element 7 is a liquid crystal display element and is transmitted and illuminated from behind.

  The illumination device 8 is mainly composed of a case body 9, a light source 10, and a light guide body 11. In addition, 12 is a thin plate-shaped reflection member, and reflects light from the light guide 11 to the light guide 11 again.

  The light source 10 is, for example, a light emitting diode. The display element 7, the dial plate 3 and the pointer 4 are illuminated. In FIG. 2, reference numeral 10 a denotes a circuit board that is electrically connected to the light source 10. The circuit board 10a is made of a flexible insulating material such as polyimide. The circuit board 10a is provided with a wiring pattern (not shown). Reference numeral 10 b denotes a metal plate for heat dissipation that diffuses the heat generated by the light source 10. Aluminum is suitable for the material of the metal plate 10b.

  The light guide 11 is made of a synthetic resin that can transmit light, and guides light from the light source 10 to the display element 7, the dial 3, and the pointer 4. The light guide 11 has an arc shape with one plane when viewed from the front, and the single plane constitutes a light receiving surface 11 a that receives light from the light source 10.

  The case body 9 is composed of a first case body 9a and a second case body 9b, and the first case body 9a and the second case body 9b are made of a white synthetic resin. The case body 9 includes a display element 7, a light source 10, and a light guide body 11. Further, the dial plate 3 is disposed on the first case body 9a and fixed with an adhesive or the like. In this embodiment, the case body 9 includes the light source 10. However, the present invention is not limited to this embodiment. For example, the light source 10 is provided on the circuit board 6 and the light source 10 provided on the circuit board 6. In other words, the light guide 11 may be extended toward the light source 10 so that light can be guided well.

  The first case body 9a includes a first irradiation unit 9c that irradiates the display element 7 with light, and a second irradiation unit 9d that irradiates the dial 3 around the first irradiation unit 9c. . Further, the second case body 9 b includes a third irradiation unit 9 e that irradiates the pointer 4.

  The first irradiation unit 9c, the second irradiation unit 9d, and the third irradiation unit 9e are all through holes. The first irradiation unit 9 c that irradiates the display element 7 with light includes a plurality of optical members between the light guide 11 and the display element 7. In this embodiment, three optical members are used, which are the light diffusion sheet 13 and the prism sheets 14 and 15 from the light guide 11 side, respectively. These optical members 13-15 are for irradiating the display element 7 with the light from the light guide 11 satisfactorily.

  The light emitted from the first irradiation unit 9c, the second irradiation unit 9d, and the third irradiation unit 9e provided on the case body 9 is visually recognized by the driver through the display element 7, the indicator unit 3a, and the pointer 4. Sometimes, in order to suppress variations in luminance, the luminance adjusting unit 11b provided in the light guide 11 can irradiate the display element 7, the indicator unit 3a, and the pointer 4 having different transmittances with different illumination luminances. Has been adjusted. The luminance adjusting unit 11b is composed of a plurality of fine concave portions and convex portions, and adjusts the illumination luminance by adjusting the size, shape and number of the fine concave portions and convex portions. The place where the brightness adjusting unit 11b is provided is on the opposite side of the light guide 11 between portions corresponding to the first irradiation unit 9c, the second irradiation unit 9d, and the third irradiation unit 9e of the light guide 11, respectively. Is provided. The brightness adjusting portion 11b is not limited to a plurality of fine concave portions and convex portions, and is formed of only a plurality of fine concave portions or only a plurality of fine convex portions. Also good.

  By configuring as described above, it is possible to serve as an illumination light source for the display element 7, the dial plate 3, and the pointer 4, eliminating the need for parts related to dedicated illumination, facilitating assembly, and reducing costs. Can be achieved.

  Further, the transmittance of the display element 7, the transmittance of the dial plate 3 (indicator portion 3a), and the transmittance of the pointer 4 are different, but by changing the luminance of the corresponding illumination by the luminance adjusting portion 11b, It is possible to optimize the brightness balance.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same and equivalent part as 1st Embodiment, and the detailed description is abbreviate | omitted.

  In the first embodiment, the second case body 9b includes the third irradiation unit 9e that irradiates the pointer 4. In the present embodiment, the first case body 9a includes the first irradiation unit 9c and the third irradiation unit 9e. In addition to the second irradiation unit 9d, a third irradiation unit 9e1 is provided. The third irradiation unit 9e1 is provided outside the second irradiation unit 9d so as to surround the second irradiation unit 9d. The third irradiating portion 9e1 is not covered with the dial plate 3 and is exposed, and irradiates the light from the light guide 11 directly onto the indication portion 4a1 of the pointer 4.

  Further, by providing the third irradiating part 9e1 on the first case body 9a, the instruction part 4a1 is miniaturized, and the fixing part 4b1 has a bowl shape as shown in FIG. Around the perimeter of Since the fixing portion 4b1 does not need to transmit light, a metal or the like can be used without using a transparent synthetic resin. By using a metal having higher rigidity than the synthetic resin as a material, the weight can be reduced as a result compared to the synthetic resin. The weight of the pointer 4 can be reduced, and the driving device 5 having a weaker force for rotating the pointer 4 than the conventional one can be used.

  Next, a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same and equivalent part as said each embodiment, and the detailed description is abbreviate | omitted.

  In the present embodiment, a third irradiation unit 9e2 is provided between the first case body 9a and the second case body 9b. The third irradiation part 9e2 is provided along the arc-shaped outer peripheral surface of the case body 9. The third irradiating part 9e2 is also exposed, and the light from the light guide 11 is directly radiated to the instruction part 4a of the pointer 4.

  In the case of the present embodiment, the luminance adjusting unit 11b of the third irradiation unit 9e2 is formed on the arcuate outer peripheral surface of the light guide 11.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same and equivalent part as said each embodiment, and the detailed description is abbreviate | omitted.

  In each of the embodiments, the first irradiation unit 9c, the second irradiation unit 9d, and the third irradiation unit 9e are individually formed. In particular, in the second embodiment, the first case body 9a is individually formed. However, in the present embodiment, the first irradiation unit 9c that irradiates the display element 7 with light, the second irradiation unit 9d that irradiates the dial 3, and the third irradiation unit 9e that irradiates the pointer 4 are integrated. The opening 9f formed in is provided. In addition, the part which irradiates light to the pointer 4 of the opening 9f is not covered with the dial plate 3, but is exposed, and the light from the light guide 11 is directly irradiated to the indication part 4a of the pointer 4. .

  By being configured in this way, the display element 7, the dial plate 3 and the pointer 4 are not separated individually, so that it is possible to deal with various dial designs and contribute to the sharing of parts. it can.

  Next, a fifth embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same and equivalent part as said each embodiment, and the detailed description is abbreviate | omitted.

  In the first to third embodiments, the first irradiation unit 9c, the second irradiation unit 9d, and the third irradiation unit 9e are individually formed. In the fourth embodiment, the opening 9f is formed by integrating the first irradiation unit 9c, the second irradiation unit 9d, and the third irradiation unit 9e.

  In the present embodiment, a second opening 9g in which a second irradiation part 9d for irradiating the dial plate 3 and a third irradiation part 9e for irradiating the pointer 4 are integrally formed is provided. The 1st irradiation part 9c and the 2nd opening 9g are partitioned off by the frame 9h formed in the 1st case body 9a. The frame body 9h is formed so as to surround the periphery of the display element 7, and the display element 7, the light diffusion sheet 14, and the prism sheets 14 and 15 can be positioned and fixed by the frame body 9h. As in the fourth embodiment, the portion of the second opening 9g that irradiates light to the pointer 4 is not covered with the dial plate 3 and is exposed, and this embodiment is exposed from the light guide 11 as well. The direct light is irradiated directly on the indicator 4a of the pointer 4.

  By being configured in this manner, the dial 3 and the pointer 4 are not separated individually, so that it is possible to deal with various dial designs and contribute to the sharing of parts.

Further, in each of the above embodiments, the dial plate 3 illuminates only the indicator portion 3a made of scales, characters, and the like. However, in addition to the indicator portion 3a, for example, for decoration provided around the dial plate 3 An irradiation unit for irradiating the ring or the like may be provided. In this irradiation part,
The second irradiating part 9d for irradiating the dial 3 with light from the light source 10 may be used, or may be provided separately from the second irradiating part 9d.

  In each of the above embodiments, the display element 7, the dial plate 3 and the pointer 4 are all illuminated. However, the present invention is not limited to the above embodiments, and the display element 7, the dial plate 3 and the pointer You may use for the pointer 4 which irradiates at least two.

The front view of the pointer type instrument apparatus of 1st Embodiment of this invention. Sectional drawing of the AA line in FIG. The front view of the case body of the embodiment. Sectional drawing of the pointer type instrument apparatus of 2nd Embodiment of the same invention. The front view of the case body of the embodiment. Sectional drawing of the pointer type instrument apparatus of 3rd Embodiment of the invention. Sectional drawing of the pointer type instrument apparatus of 4th Embodiment of the invention. The front view of the case body of the embodiment. Sectional drawing of the pointer type instrument apparatus of 5th Embodiment of the invention. The front view of the case body of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pointer-type instrument apparatus 2 Display 3 Dial 3a Indicator part 4 Pointer 5 Drive apparatus 7 Display element 9 Case body 9a 1st case body 9b 2nd case body 9c 1st irradiation part 9d 2nd irradiation part 9e , 9e1, 9e2 Third irradiation part 9f opening 9g second opening 10 light source 11 light guide 11a light receiving surface 11b brightness adjustment part

Claims (10)

A light source, a light guide that guides light from the light source, a display element that is illuminated by the light source, a case body that includes at least the display element and the light guide, and a position around the display element In a pointer-type instrument device comprising: a dial plate including an indicator portion, a pointer that points to the indicator portion, and a driving device that rotates the pointer, the case body includes the display element and the dial plate A pointer-type instrument device comprising a plurality of irradiation units for irradiating light of the light source on at least two of the pointers. 2. The pointer-type instrument device according to claim 1, wherein one of the plurality of irradiation units is a first irradiation unit that irradiates light of the light source onto the display element. 2. The pointer-type instrument device according to claim 1, wherein one of the plurality of irradiation units is a second irradiation unit that irradiates the dial with light from the light source. 2. The pointer-type instrument device according to claim 1, wherein one of the plurality of irradiation units is a third irradiation unit that irradiates the pointer with light of the light source. A first irradiating unit that irradiates the display element with the light from the light source, a second irradiating unit that irradiates the dial with the light from the light source, and a third irradiating the pointer with the light from the light source. The pointer-type instrument device according to claim 1, wherein an irradiation unit is provided. The pointer-type instrument device according to claim 1, wherein the light guide has a single light-receiving surface that receives light from the light source. The pointer-type instrument device according to claim 1, wherein the light guide includes a luminance adjustment unit corresponding to the irradiation unit. The pointer-type instrument device according to claim 7, wherein the brightness adjusting unit includes a fine concave portion and / or a convex portion. 6. The pointer-type instrument device according to claim 5, wherein an opening in which the first, second, and third irradiation parts are integrally formed is provided in the case body. The pointer-type instrument device according to claim 5, wherein the case body is provided with a second opening in which the second irradiation section and the third irradiation section are integrally formed.

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