JPH0434423Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is designed to illuminate the dial, pointer, etc. of the instrument mechanism with the irradiated light from the illumination mechanism disposed at the bottom of the indicator instrument, especially the lower case. This invention relates to a lighting device for a meter.

[Technical background and problems]

Generally, as shown in FIG. 5, this type of meter has a meter body 2 and a lighting lamp 3 housed in the bottom of a case 1, and a dial plate 4 is fixedly attached to the upper end of the meter body 2. An instrument mechanism is formed by fixing a pointer 6 to a shaft 5 that penetrates through a dial 4 from the main body 2 and projects upward. In addition, a facing plate 7 is provided on the open end side of the case 1, that is, on the upper peripheral edge of the dial 4, and the irradiation light from the illumination lamp 3 is formed by applying white or other paint to the inner peripheral wall 1a of the case 1. It is reflected by the reflective layer 8 and guided above the dial 4,
Furthermore, this light beam is reflected by the facing plate 7 to indirectly illuminate the scale of the dial plate 4 and the hands 6, which are part of the instrument mechanism.

By the way, since the reflective layer 8 formed on the inner circumferential wall 1a of the case 1 is formed by applying paint, the coating of the reflective layer 8 may be uneven, which may cause problems in the manufacturing process of the reflective layer 8. It was something that could not be called a thing.

In order to solve this problem,
An instrument lighting device as disclosed in Japanese Patent No. 26469 has been proposed.

This is because the inner peripheral wall of the case that houses the instrument mechanism and the illumination mechanism, which includes sockets and illumination lights, has an outer diameter that is approximately the same as the inner diameter of the case, and reflects the rays of light from the illumination member above the dial. In this case, the reflection efficiency will be better than the above-mentioned one, but if the shape and dimensions of the case are It has to be formed individually according to the requirements, etc., making the manufacturing process expensive.

Furthermore, it is conceivable to make a flexible flat resin sheet material a such as polypropylene along the inner circumferential wall c of the case b, but in this case, if the case b has a round shape, the resin sheet material The sheet material a can be arranged along the inner circumferential wall c of the case b due to its bending force, but as shown in FIG. Material a may be deformed inward of case b, reducing the reflection efficiency of the irradiated light from the illumination lamp, or the brightness due to reflected lighting may fluctuate due to the misalignment of the set position of sheet material a. The lighting effect on the instrumentation may not be good.

[Purpose of invention]

The present invention solves the above-mentioned problems by easily assembling and holding a reflector plate in a non-round case to guide the irradiated light from the illumination mechanism to the scale and pointer of the dial of the instrument mechanism. The purpose of the present invention is to provide an instrument lighting device that can

[Summary of the idea]

The present invention provides an instrument in which an instrument mechanism and a lighting mechanism are housed in an instrument case consisting of an upper case and a lower case. A position regulating part for supporting the upper edge of the reflector is integrally formed to protrude from the upper case, and a position regulating part for supporting the lower edge of the reflector is integrally formed to protrude from the lower case. As a result, the mounting position of the reflector can be stabilized by holding the upper end of the reflector by the position regulating part of the upper case, and holding the lower end by the position regulating part made of the rising wall of the lower case. This provides a good lighting effect.

[Example of idea]

Hereinafter, each embodiment of the present invention will be explained based on the attached drawings. Figures 1 and 2 show the first embodiment of the present invention, and the lower part of the vehicle instrument 11 such as a speedometer or a tachometer is shown. An instrument body 14, a socket 15a, and an illumination light 15 are mounted on the bottom wall 13 of the case 12.
A lighting mechanism 15 consisting of components such as b is housed.

Further, a rising wall 16 is provided on the periphery of the bottom wall portion 13 of the lower case 12, and a flange portion 17 is provided on the outside of this rising wall 16.

A dial plate 18 is attached and fixed to the upper part of the instrument body 14, and a gap is provided between the side peripheral wall of the dial plate 18 and the inner peripheral wall 19a of the upper case 19 to introduce the irradiation light from the illumination mechanism 15. .

Further, a pointer 20 for giving instructions to the meter body 14 is inserted through the dial 18 from the meter body 14 and is press-fitted and fixed to the upper end of a shaft 21 that protrudes upward, thereby configuring the entire meter mechanism 22.

A bent portion 23 bent outward is formed at the opening edge of the upper case 19, and a facing plate 24 is disposed on this bent portion 23, and by this facing plate 24,
The dial 1 reflects the irradiated light from the illumination mechanism 15.
8 scale and pointer 20 are formed so as to be able to be indirectly irradiated, a see-through plate 26 with a U-shaped packing 25 fitted in cross section is disposed above the dial plate 24, and the dial plate 24 and the seal 25 are provided. see-through plate 26
is fixed to the bent portion 23 side of the upper case 19 by a ring-shaped cover 27.

The front side of the upper case 19, that is, the transparent plate 26
The inner peripheral wall 1 inward of the upper case 19 is located at the periphery of the upper case 19.
9a is provided with a falling wall 28, and this falling wall 28 and the inner circumferential wall 19 of the upper case 19 outside the falling wall 28
The upper position regulating portion 29 is formed by a.

Further, a colored reflective plate 30 made of a flexible flat resin sheet material such as polypropylene is disposed on the inner circumferential wall 19a of the upper case 19, and the upper end side 31 of this reflective plate 30 is It is inserted into the upper position regulating part 29, and the lower end side 32 is connected to the rising wall 16 of the lower case 12 and the upper case 19.
The lower position regulating portion 33 is inserted and held between the inner peripheral walls 19a of the lower position regulating portion 33.

In this case, in order to arrange the colored resin reflective plate 30 on the inner peripheral wall 19a of the upper case 19, the upper case 1
9 from the rear opening 34 to the upper end side 31 of the reflective plate 30
into the upper position regulating part 29 of the upper case 19,
Next, by fitting the lower case 12 into the upper case 19 through the rear opening 34 of the upper case 19, the lower end side 32 of the reflector 30 is connected to the inner circumferential wall 1 of the upper case 19.
9a and the rising wall 16 of the lower case 12, which is positioned and held by the lower position regulating portion 33.

Therefore, a part of the irradiated light from the illumination mechanism 15 is guided directly to the facing plate 24 above the dial 18 through the gap between the dial 18 and the upper case 19, and the other irradiated light is guided by the reflector 30 or the like. The facing plate 2 passes through the gap between the dial 18 and the upper case 19 while being reflected.
The light rays guided to the 5 side and reflected by the dial plate 24 indirectly illuminate the scale and hands 20 on the dial plate 18.

At this time, the colored resin reflector 30 is attached to the upper case 1.
By disposing it on the inner circumferential wall 19a of the case 9, compared to the conventional method in which paint is applied to the inner circumferential wall of the case to form a reflective layer, it is possible to save the effort and eliminate the worry of paint unevenness. In addition, the upper end side 31 of the reflector 30 is
9, the lower end side is held by the lower position regulating portion 33 consisting of the inner circumferential wall 19a of the upper case 19 and the rising wall 16 of the lower case 12, thereby preventing the upper case 19 from deforming inward. This makes it possible to install it in instrument cases other than round shapes.

3 and 4 show a second embodiment of the present invention, in which a rising wall 16 of the lower case 12 is shown.
and the falling wall 28 of the upper case 19 are the entire circumferential and inner peripheral walls 19 of the lower case 12 and upper case 19, respectively.
It is not necessary to form it in a, as shown in Fig. 4,
It is only necessary to form it at a location where the upper case 19 is easily deformed inward when the reflective plate 30 is disposed. In this case, a falling wall 28 is provided on the inner circumferential wall 19a of the upper case 19, and the upper position regulating portion 2
9 is formed.

Further, a rising wall 16 is provided on the inner circumferential wall 12a of the lower case 12, and a lower position regulating portion 33 is formed by this rising wall 16 and the inner circumferential wall 12a of the lower case 12 outside the rising wall 16. Upper end side 3
1 is located on the lower end side 3 by the upper position regulating portion 29.
2 is held by a lower position regulating portion 33.

Note that by appropriately selecting the hue of the colored resin reflection plate 30, the irradiated light beam from the illumination member 15 can be changed to an arbitrary hue to illuminate the dial 18.

[Effects of the invention] As described above, the present invention provides an instrument in which an instrument mechanism and a lighting mechanism are housed in an instrument case consisting of an upper case and a lower case. A flexible flat reflecting plate is disposed, and a position regulating part for supporting the upper edge of the reflecting plate is formed integrally protruding from the upper case, and a position regulating part for supporting the lower edge of the reflecting plate. By integrally protruding from the lower case, it is possible to hold the resin reflection plate that serves as a reflection member for the irradiated light by a simple assembly process on the inner peripheral wall of the case, and it is also possible to hold the resin reflection plate that serves as a reflection member for the irradiated light. A reflector can be attached to the instrument.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, in which FIG. 1 is an overall sectional view showing the assembled state, FIG. 2 is a horizontal sectional view, and FIGS. The second embodiment of the invention is shown, and FIG. 3 is an overall sectional view showing the assembled state, FIG. 4 is a plan sectional view thereof, FIG. FIG. 2 is an explanatory diagram showing a deformed state of the reflector. 11...Vehicle instrument, 12...Lower case, 13
... Bottom wall part, 14 ... Instrument member, 15 ... Lighting member, 16 ... Standing wall, 19 ... Upper case,
12a, 19a... Inner peripheral wall, 28... Falling wall, 29... Upper position regulating portion, 30... Reflector plate,
31... Upper end side, 32... Lower end side, 33... Lower position regulating portion.

Claims (1)

[Scope of utility model registration request] In an instrument in which an instrument mechanism and a lighting mechanism are housed in an instrument case consisting of an upper case and a lower case, a flexible flat reflector is disposed almost along an inner wall surface of the instrument case. and a position regulating part for supporting the upper edge of the reflector is integrally formed to protrude from the upper case, and a position regulating part for supporting the lower edge of the reflector is integrally formed to protrude from the lower case. Features an instrument lighting system.