JP2001100671A - Display illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-assemble and low-cost structure of a display illumination device provided with light shielding members around plural light transmission members arranged in an array form. SOLUTION: A light guide device 11 formed by integrally molding the light transmission members 12 exclusive of their front ends at the light shielding members 13 and integrally connecting these members to the array form by connecting members 14 is mounted by means of screws 19 to mounting bosses 18 on the rear surface of a face plate 16 through mounting flanges 15 at their both ends.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display illuminating device in which a light shielding member is provided around a plurality of light guide members arranged in rows.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a display illuminating device of this type has a plurality of rectangular parallelepiped light-shielding portions 2 integrally formed on a face plate 1 formed of an opaque resin in a line. It is formed by fitting a separate transparent light guide member 4 into the through hole 3 formed in the portion 2. Characters and the like are displayed on the end surface of the light guide member 4 that is exposed on the front surface side of the face plate 1, and a light source such as an LED is disposed on the opposite end surface. Characters and the like on the surface of the light guide member 4, which are lit, are raised and displayed, and light leakage to the other light guide members 4 is blocked by the light shielding unit 2.

[0003]

However, in the above-mentioned conventional display lighting device, the operation of fitting the light guide members 4 into the through holes 3 of the respective light shielding portions 2 is troublesome, and it takes much time for assembly. However, there is a problem that the cost is high.

The present invention solves such a conventional problem, and provides an easy-to-assemble and low-cost display lighting device.

[0005]

In order to solve the above-mentioned problems, a display illumination device according to the present invention comprises a light guiding device in which a plurality of light shielding members formed around each light guiding member are connected. In addition, by integrating a plurality of light shielding members having a light guide member in a row, attachment to a face plate can be facilitated.

In addition, a display illumination device according to the present invention includes a light guiding device in which a plurality of light shielding members formed around each light guiding member except for a tip end are connected, and a mounting for mounting the light guiding device on a back surface. And a face plate having a plurality of through holes to be fitted to the distal end of each of the light guide members, so that an assembling is easy and a low-cost display lighting device can be realized.

Further, the present invention is an on-vehicle acoustic device having the above-described display illumination device on a front operation unit, and can realize an in-vehicle acoustic device that is easy to assemble and low in cost.

[0008]

FIG. 1 shows a display illumination device according to an embodiment of the present invention, wherein (a) is an exploded perspective view of the display illumination device, and (b) is a light which is a part of the display illumination device. It is a perspective view of a guidance device. FIG. 2 is an assembled sectional view of the display illumination device. In FIG. 1, a light guiding device 11 includes a plurality of light guide members 12, a plurality of light shield members 13 formed around the respective light guide members 12 except for a distal end thereof, and a plurality of light shield members 13 in a row. Connecting member 14 for connection and light shielding members 13 at both ends
And a mounting flange 15 protruding from the side surface from the side, and are all integrally formed.

The light guiding device 11 is formed by a so-called two-color molding method. First, the light guide member 12 is formed in advance into a rectangular parallelepiped with a transparent resin material, or is formed by cutting a bar material having a rectangular cross section of the transparent resin material. Next, the light guide member 12 is set in a positioning hole formed at a predetermined position in the lower mold, the upper mold is closed, and a molten opaque resin material is poured into the light guide member 12, the light blocking member 13, the connecting member 14, and the mounting flange 15 Are integrally molded. As shown in FIG. 1B, the light guide member 11 taken out of the mold after cooling has a front end portion 12a of the light guide member 12 protruding from the front surface of the light shielding member 13, as shown in FIG.

In FIG. 1A, a face plate 1
Numeral 6 denotes an injection molding made of an opaque resin material.
Mounting boss 18 for fixing the through-hole 17 for accommodating the front end portion 12a of the second and the mounting flange 15 with the screw 19
Are formed. FIG. 2 shows the light guiding device 1
1 shows a partial cross section of a display illumination device in which 1 is attached to a face plate 16. Since the height of the light guide member 12 is the same as the height of the light shielding member 13, the bottom portion 12b is retracted by the amount of the protruding tip portion 12a. Further, a light source (LED) 21 mounted on the printed wiring board 20 is disposed so as to face the bottom 12b. When the light source 21 is turned on, the light is prevented from leaking to the other by the light shielding member 13, is emitted from the distal end portion 12 a through the light guide member 12, and emerges characters and the like displayed on the distal end portion 12 a. Let

As described above, according to the present embodiment, the light guide member 12 is formed integrally with the light shielding member 13 except for the end portion thereof, and further integrally connected in a row by the connecting member 14. 11 are screwed to mounting bosses 18 on the back surface of the face plate 16 via mounting flanges 15 at both ends thereof.
As a result, an easy-to-assemble and low-cost display lighting device can be realized.

In the above embodiment, the length of the connecting member 14 can be freely set according to the position of the light guide member 12, and when the light guide member 12 is close, The light blocking member may be formed continuously without the connecting member. Further, the present invention is suitable for application to a vehicle acoustic device, but can also be applied to other electronic devices.

[0013]

As described above, the display illumination device of the present invention is provided with a light guiding device in which a plurality of light shielding members formed around each light guide member are integrally connected in a row. In addition, since a plurality of light shielding members having a light guide member are integrated in a row, attachment to a face plate can be facilitated, and a display lighting device which is low in cost and excellent in mass productivity can be provided. In addition, since the light guide member and the light shielding member are integrally structured, it is possible to avoid the occurrence of rattling of the fitting portion, generation of abnormal noise, and the problem of detachment of the light guide member in the case of the conventional separate structure. Can be.

[Brief description of the drawings]

1A is an exploded perspective view of a display lighting device according to an embodiment of the present invention, and FIG. 1B is a perspective view of a light guiding device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the display illumination device according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view of a display illumination device in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Light guide device 12 Light guide member 12a Tip part 12b Bottom part 13 Light shielding member 14 Connecting member 15 Mounting flange 16 Face plate 17 Through hole 18 Mounting boss 19 Screw 20 Printed circuit board 21 Light source

Claims (3)

[Claims] 1. A display lighting device comprising a light guiding device in which a plurality of light shielding members formed around each light guiding member are connected. 2. A light guide device comprising a plurality of light blocking members formed around each light guide member except for a tip portion, and a mounting portion for mounting the light guide device on a back surface, and each of the light guide devices has a light guide member. A display plate comprising: a face plate having a plurality of through-holes fitted into a front end of the optical member; 3. An on-vehicle acoustic device comprising the display illumination device according to claim 1 on a front operation unit.