JPH0553070U - Pushbutton lighting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the cost of the light guide used for separate illumination of the upper and lower parts of the same push button. [Structure] A first light guide portion 5A serving as a radio mode illumination light guide and a second light guide portion 5B serving as a tape / CD mode light guide are integrated via a crank-shaped connecting portion 6. The light guide 5 is used. Separate illumination can be performed by using only one light guide 5.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a lighting structure for a push button that separately illuminates the upper part and the lower part of the push button with a light source.

[0002]

[Prior Art]

 For example, in an audio device such as an on-vehicle car stereo, as shown in FIG. 6, a plurality of pushbuttons are provided with the same pushbutton on the front side of the escalation 3 and mode indications of different functions at the upper and lower parts. 1 is arranged. In addition, the mode display above and below the pushbuttons 1 is configured such that nighttime illumination is also illuminated separately.

For example, when the radio mode is selected, the mode display of the push button 1 is illuminated by the upper mode display as shown in FIG. 7, while when the tape / CD mode is selected, the push button 1 is displayed. In the mode display of, the lower mode display is illuminated as shown in FIG.

In order to separately illuminate the upper part and the lower part of the same push button 1 as described above, separate illumination is required, and therefore a light guide body for this purpose is used. FIG. 5 shows a light guide body for performing this separate illumination. A radio mode illumination light guide body 17 and a tape / CD mode illumination light guide body 18 are separately prepared and are provided on the back surface side of the escutcheon 3. It is attached to the pair of light shielding ribs 20A and 20B provided. Reference numeral 19 indicates a light source hole.

[0005]

[Problems to be solved by the device]

 By the way, in the conventional push-button illumination structure, since a plurality of light guides must be prepared corresponding to a plurality of mode displays, there is a problem in that cost increase cannot be avoided because the number of parts increases. That is, as the number of parts increases, the unit price of parts and the processing cost will increase.

The present invention has been made in consideration of the above problems, and an object thereof is to provide a lighting structure for a push button that reduces the number of parts to reduce the cost.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a first light guide part and a second light guide part that respectively illuminate an upper part and a lower part of a push button in a structure in which an upper part and a lower part of the push button are separately illuminated by a light source. The above-mentioned crank is configured so as to shield the light guide body integrated through the crank-shaped connecting portion and the opposing surfaces of the first light guide portion and the second light guide portion excluding the above-mentioned crank-shaped connecting portion. It is characterized in that it is provided with a light-shielding rib having a notch portion that fits into a connection portion having a shape.

[0008]

[Action]

 A light guide body in which a first light guide portion and a second light guide portion for illuminating the upper and lower portions of the push button are integrated via a connection portion in a crank shape is prepared, and a light shielding rib separately prepared The light guide is attached to the light-shielding rib by fitting the crank-shaped connecting portion into the notch portion. As a result, the separate illumination can be performed by using only one light guide, and the number of parts can be reduced.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of an illumination structure of a push button according to the present invention. Reference numeral 1 is a push button in which a plurality of push buttons are arranged in a row, and a mode indication of a radio mode is provided on an upper part of the push button and a lower part thereof. The tape / CD mode display is provided on the bottom, and the rubber SW (switch) pressing portion and fixed claw 2 are provided on the bottom surface of each.

Reference numeral 3 denotes an escutcheon, and an insertion hole 4 for inserting the rubber SW pressing portion / fixing claw 2 of each of the push buttons 1 is provided on the surface side thereof. Reference numeral 5 denotes a light guide body arranged on the back side of the escutcheon 3, and includes a first light guide section 5A serving as a radio mode illumination light guide body and a second light guide section 5B serving as a tape / CD mode illumination light guide body. , Which are integrated via a crank-shaped connecting portion 6.

FIG. 2 particularly shows a method of mounting the light guide 5 arranged on the back side of the escutcheon 3 to the pair of light shielding ribs 7A and 7B, which corresponds to the position of the crank-shaped connecting portion 6 in advance. At the positions of the light shielding ribs 7A and 7B, notches 8 into which the connecting portions 6 are fitted are provided.

FIG. 3 shows a side surface structure after the first light guide portion 5A and the second light guide portion 5B are attached to the light shielding ribs 7A and 7B, respectively. The facing surfaces of the light guide portions 5A and 5B are shielded by the light shielding ribs 7A and 7B except for the connection portion 6. Here, since the connecting portion 6 that integrally connects the first and second light guide portions 5A and 5B has a crank shape, light does not interfere between the light guide portions 5A and 5B. .. Further, since the entrance of the crank-shaped connecting portion 6 is provided at a position different from that of the illumination reflecting surface 6A, the amount of light can be reduced.

In FIG. 1, a printed circuit board (PWB) 9 is provided with a carbon contact 10 on its surface, and a rubber SW 11 is arranged so as to cover the carbon contact 10. A plurality of recesses 12 are provided on the side surface of the rubber SW 11, and a lamp 13 serving as a light source is attached to the recesses 12. A rubber SW pressing portion 14 is provided at a position of the rubber SW 11 corresponding to the rubber SW pressing portion / fixed claw 2 of the pressing button 1, and a conductive portion 15 is attached to the back surface thereof.

FIG. 4 shows a cross-sectional view of the lighting structure after being assembled based on the arrangement of the parts shown in FIG. When the push button 1 is pressed, the rubber SW push portion / fixing claw 2 on the bottom of the push button 1 moves to the right in the figure and pushes the rubber SW 11, so when the rubber SW 11 is deformed and the conductive portion 15 comes into contact with the carbon contact 10, The circuit contact turns on. By releasing the hand from the push button 1, the conductive portion 15 is separated from the carbon contact 10 by the elasticity of the rubber SW 11, so that the circuit contact is turned off. Reference numeral 16 indicates a lamp cap.

As described above, according to the present embodiment, the first light guide portion 5A serving as a radio mode illumination light guide body serves as a light guide body for performing separate illumination of the upper portion and the lower portion of the same push button 1. Since the light guide body 5 in which the second light guide portion 5B serving as the tape / CD mode illumination light guide body is integrated via the crank-shaped connecting portion 6 is used, one light guide body 5 is used. Separate illumination can be performed only by using. Therefore, the number of parts can be reduced, and the cost can be reduced. That is, it is possible to reduce the unit price of parts and the processing cost. Moreover, since the light guide portions 5A and 5B are integrated through the crank-shaped connecting portion 6, the strength of parts can be increased.

[0016]

[Effect of the device]

 As described above, according to the present invention, since the same push button is separately illuminated by using one light guide, the number of parts can be reduced and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a push button illumination structure of the present invention.

FIG. 2 is a perspective view showing a method of attaching a light guide to a light shielding rib in this embodiment.

FIG. 3 is a side view showing the structure after the light guide body is attached to the light shielding rib in the present embodiment.

FIG. 4 is a sectional view of the present embodiment.

FIG. 5 is a perspective view showing a conventional method for attaching a light guide to a light shielding rib.

FIG. 6 is a front view showing an operation panel of an audio device to which the present invention is applied.

FIG. 7 is a front view showing an example in which a mode display above a push button of an audio device is illuminated.

FIG. 8 is a front view showing an example in which a mode display below a push button of an audio device is illuminated.

[Explanation of symbols]

 1 push button 3 escutcheon 5 light guide 5A first light guide 5B second light guide 6 crank-like connection 7A, 7B light-shielding rib 8 cutout 11 rubber SW (switch) 13 lamp

Claims (1)

[Scope of utility model registration request] 1. A structure in which an upper part and a lower part of a push button are separately illuminated by a light source, and a first light guide part and a second light guide part which respectively illuminate an upper part and a lower part of the push button are crank-shaped connecting parts. The light guide body integrated through the first light guide section and the second light guide section except for the crank-shaped connecting section are shielded from light and are fitted with the crank-like connecting section. Illumination structure for a push button, comprising: a light-shielding rib having a cutout.