JPH03259489A - Illuminator for acoustic equipment - Google Patents

Abstract

PURPOSE:To reduce the cost by using one light source arranged in the inside of the equipment so as to implement night illumination for a display plate character. CONSTITUTION:A light guide member 80 is placed at a rear side of a display plate 20 and a light from a lighting light source 70 at night illumination is reflected in a forming face of the light guide member 80 and led out as shown in A, C in figure and a display plate character is illuminated. When switches 52, 53 or the like are closed, indicator light sources 72, 73 are lighted and the light radiates in the direction of B, D through the light guide member 80. Then the color tone of the character of the display plate changes from that of the illumination light source 70 into the color tone of the indicator light sources 72, 73 and the operating state of each switch is expressed by a change in the display plate character. The night illumination light source is used by one light source without being arranged to each display character in this way. Thus, the cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lighting device, and particularly to a lighting device with an operating knob that is suitable for use in audio equipment and the like.

Conventionally, this type of device illuminates the letters on the display plate that display the functions of each switch on the control panel at night, as described in Utility Model Application No. 62-51590 and Utility Model Application No. 51-61249. The switch is in the operating state (ON).
), the font color tone is changed to indicate that the switch is a switch, but in this case, two light sources with different color tones are required for each switch, and sufficient consideration must be given to the demand for cost reduction. It wasn't.

A conventional lighting device will be explained using FIG. As shown in Fig. 1, a conventional device of this kind has a display plate 2 that displays the functions ((111, LOUD) of each switch 52, 53).
0 is a translucent plate material with non-transparent solid printing with characters cut out from the back side.The light sources 71.72 and 71.73 (LOUD) etc. placed on the back side of the board are used to display ([3) and 71.73, respectively. It has a proven structure.

Further, the light source 71 is turned on in conjunction with the lighting switch of the car, and the light sources 72 and 73 are turned on when each switch is turned on. Further, the distance between the light source 71 and the light is (I) due to the color m (for example, green) of the light source 71.

LOUD) characters are illuminated, and when each switch is turned on, the operating state of the corresponding switch is indicated by a change in the color tone of the displayed characters illuminated in the color tone of light @72.73 (for example, red).

However, this method requires two light sources for each switch, and lacks consideration for cost and space issues in light source arrangement.6 [Problem to be solved by the invention] The above conventional technology Although the night illumination light sources for each switch are the same, no consideration has been given to the fact that a single item (-light source) can be substituted, resulting in problems such as cost and space for arranging the light sources.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting device for audio equipment that eliminates the drawbacks of the prior art described above.

[Means to solve the problem]

The above purpose is to unify the light source for night illumination and place it inside the device, guide this light through a light guiding material, and provide the extension part on the back of the display plate, and also provide a light source for an indicator to indicate the operating status of the switch. This is achieved by placing the light guide material behind the display plate.

[Effect]

The light from the night illumination light source placed inside the device is guided by a light guide and illuminates the characters on the display plate.In addition, the light source for the indicator of each switch is placed behind the display plate via the light guide. When the indicator light source is turned on, the indicator light source passes through the light guide material and changes the color tone of the characters on the display plate.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 70
is a light source for nighttime illumination, and is covered with a colored lamp cap to give it a decorative color tone (green in this example). Reference numeral 80 denotes a light guiding material made of a transparent plastic material, and a light source 70 for illumination.
The characters on the display plate 20 are illuminated by emitting light. 7
Reference numerals 2 and 73 indicate indicator light sources of switches linked to the switches 52 and 53, respectively, and the color tone is different from that of the illumination light source 70 (red in this embodiment). Here, a light guiding material 80 is disposed on the back side of the display plate 20, and during night illumination, the light from the illumination light source 70 is reflected on the shaped surface of the light guiding material 80 (a).

It is derived as shown in (c) and illuminates the characters on the display plate. Further, when the switches 52, 53, etc. are operated (ON), the respective indicator light sources 72, 73 are lit, and the light is transmitted through the light guide material 80 and irradiated in the directions of (b) and (d) for display. The characters on the plate change from the color tone of the illumination light source 70 to the color tone of the indicator light sources 72, 73, and the operating status of each switch can be expressed by the change in the characters on the display plate.

In this way, the present invention can replace the conventional light source for night illumination with one light source without disposing it for each display character, reducing costs and solving the problem of board space for arranging light sources for switch indicators.

〔Effect of the invention〕

Since the present invention is configured as described below, it produces the effects described below.

The characters on the display plate can be illuminated at night with a single light source placed inside the device, and can be provided at a lower cost than conventional methods. In addition, the light source placed on the control board behind the display plate can be used only for switch indicators for each plate character, resulting in a great advantage in terms of board space.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view showing an example of a conventional lighting device;
The figure is an exploded perspective view showing an embodiment of the lighting device of the present invention. 10... Control panel main body base, 20...
Display plate, 61-64...Switch knob, 30.
...Panel board, 70.71...Light source for lighting, 40...
- Lamp holder, 72.73... Indicator light source. 52, 53...Switch, 80...Light guiding material. Figure 1 Funeral Figure 2

Claims (1)

[Claims] 1. In a lighting system for audio equipment that illuminates a display plate that is installed on a control panel with a plurality of switches and displays the function and operating status of each switch, the light source that illuminates the displayed characters, etc. on the display plate is the equipment. An extension part of a light guiding material disposed inside and guiding illumination light from the internal light source is provided on the back surface of the display plate, further interlocking with a panel switch, and the internal light source provides an indicator light source with different color tones. , A lighting device for an audio equipment, characterized in that the lighting device is arranged behind the display plate via the light guide material.