JPH0650191U - Light source mounting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a light source mounting device with good lighting efficiency and excellent design. [Structure] A plurality of light sources are provided to individually illuminate a plurality of display portions formed on a push button operation surface from the rear of the push button.
The plurality of light sources are attached to the printed board via the attachment member. The mounting member is provided with a mounting portion for disposing the first light source and a holding portion for disposing the second light source, and further, a light shielding wall is formed between the mounting portion and the holding portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a push button device for operating an electronic device such as a sound reproducing device, and more particularly to a light source mounting device suitable for a push button lighting device that illuminates a push button from the rear.

[0002]

[Prior art]

 A push button for operating an electronic device usually has characters or figures indicating the operation function of the push button displayed on the operation surface, and the display part of these characters or figures is a lamp light source arranged behind the push button. It is designed to be illuminated by LED elements.

FIG. 3 is a perspective view for explaining a mounting state of a conventional push button illumination light source, and shows an example of illuminating a plurality of display portions of a single push button by using a plurality of light sources having different colors. It In the figure, 1 is a push button, 2 is a printed circuit board, 3 is a light guide for illumination, and 4 and 5 are LEDs as a light source, which are elements of different emission colors.

The push button 1 is usually formed of a light-transmissive resin such as acrylic resin, and the surface-treated operation surface 1c is provided with a character display portion 1a by a peeling process or the like. An indicator window 1b into which 3 is fitted is provided. The character display portion 1a is illuminated by the cylindrical LED 4, and the illumination light of the rectangular LED 5 is applied to the light guide body fitted in the other indicator window 1b. In addition, a push rod (not shown) is integrally formed in the center of the back side of the push button 1, and a switch inside the device is pushed by the push rod. The push button 1 is attached so as to face the push button opening on the front panel of the device.

[0005]

[Problems to be solved by the device]

 The conventional example shown in FIG. 3 has many advantages such as efficient lighting with low power by applying two LED elements of different colors to the character display part of the push button and the plurality of display parts of the indicator part. On the other hand, however, the following problems were pointed out, and improvements were desired.

First, in order to efficiently radiate the light of the LED to the push button, it is desirable to place the LED as close to the push button as possible in consideration of the press stroke of the push button. However, in the above-mentioned conventional example, since the LED is directly soldered to the printed circuit board, it is almost impossible to adjust the height for bringing the LED close to the push button. Secondly, when LED elements having different emission colors are brought close to each other, color mixing due to light interference may occur and the design effect may be impaired. Thirdly, the LED element has a drawback that the emission color is limited and the light quantity is smaller than that of the tungsten lamp. In the case of the conventional example, since the indicator window 1b, the light guide 3 and the like are molded, the molding die becomes complicated, which causes a cost increase.

The present invention has been made in view of the above circumstances, and the height of the light source can be adjusted, and the light source is attached through an attachment member capable of preventing light leakage to efficiently illuminate the push button. By doing so, it is an object of the present invention to provide a push-button lighting device including a light source mounting device that achieves an excellent design effect.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, in the light source mounting device of the present invention, a plurality of light sources are arranged behind a single push button, and a plurality of display portions formed on the operation surface of the push button are individually separated by the light sources. In a light source mounting device for a push-button lighting device that illuminates in a vertical direction, between a mounting portion on which a first light source is disposed and a second light source disposed adjacent to the mounting portion and the first light source. It has a light-shielding wall that stands upright and blocks light.

[0009]

[Action]

 The LED, which is the first light source, is mounted on the mounting portion. The LED is disposed in the stepped mounting portion in the vicinity of the push button, and efficiently illuminates the indicator portion of the push button. The lamp light from the second light source directly illuminates the character display portion, but the light irradiating to the side of the character display portion is completely blocked by the light blocking wall, and the two display portions and the light source are provided in close proximity to each other. However, there is no light interference, and the plurality of display parts are illuminated in different colors.

[0010]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings. 1 is an assembled perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view of the push button viewed from the arrow A side in FIG. In the figure, 10 is a push button, 20 is a printed circuit board, 30 is a light source mounting device that functions as an auxiliary adapter when the light source is mounted on the printed circuit board 20, and is hereinafter referred to as a light source mounting member.

The push button 10 is made of a light-transmissive resin, and its operation surface 11 is subjected to surface treatment, and a character display portion 12 and an indicator portion 13 are formed by laser processing or peeling treatment. The character display portion 12 is provided with a light-transmitting color as necessary. In addition, a push rod 15 for pushing the switch 23 is integrally formed in the central portion on the back side of the push button 10, and a partition wall 16 for optically blocking the character display portion 12 and the indicator portion 13 from each other is formed. ing. The push button 10 is mounted so that the operation surface 11 is exposed to the push button opening 26 formed in the escutcheon 25, which is the front panel of the device, and the tip of the push rod 15 contacts the head of the switch 23.

The light source mounting member 30 is an LED mounting portion 31 which holds the LED element 22 which is the first light source in a fixed position, and a tungsten type illumination lamp which is directly mounted on the printed circuit board 20 and serves as a second light source. A lamp holding portion 32 is formed to cover the periphery of 21, and a pair of support legs 33, 33 having engaging claws 34 are integrally formed at both lower ends thereof. When the mounting member 30 is mounted on the printed circuit board 20, the supporting claws 33, 33 are narrowed and inserted into the holes of the printed circuit board 20 so that the engaging claws 34, 34 engage with the holes and the mounting member 30 is printed. It is fixed on the substrate 20.

As can be seen from the cross-sectional view of FIG. 2, the LED mounting portion 31 is provided with a step having a pedestal function, and the LED element 22 is raised by one step at a position close to the push button 10 and positioned on the pedestal. It is installed as decided. At the time of mounting the LED 22, the lead wire 22 a is soldered and fixed to the printed circuit board 20 through the through hole of the mounting portion 31. Further, a light blocking wall 35 that blocks the lamp light is erected between the lamp holding portion 32 and the LED mounting portion 31, so that light leakage to the LED side is prevented.

At the time of assembling the push button device, the switch 23, the illumination lamp 21, the light source mounting member 30 and other components are mounted on the pudding board 20 in advance. It is attached to 31. Then, the push button operation surface 11 is inserted into the opening 26 from the inside of the escutcheon 25, and then the printed circuit board 20 is fixed to the rear of the escutcheon 25. After the push button 10 is attached, when the push button 10 is pressed, the switch 23 is closed and the circuit operates. Here, if the circuit of the switch 23 is connected to the lamp 21 or the LED 22, the lamp 21 or the LED 22 is turned on when the push button 10 is operated, and the illumination light is emitted to the rear of the push button 10. When the LED 22 and the lamp 21 are turned on at the same time, the lamp light is blocked by the light shielding wall 35 and is not emitted to the side, that is, the LED 22 side. The lamp light is also blocked by the central partition wall 16 of the push button 10 to illuminate only the character display portion 12, but does not reach the indicator portion 13. Therefore, the color of the character display portion 12 and the light of the LED 22 which are irradiated with the lamp light do not interfere with each other, and the color mixing does not occur.

Further, although the LED 22 has a long life as a light source, the LED 22 has a smaller amount of light than the lamp 21, but since the LED 22 is arranged in the LED mounting portion 31 having a step, the indicator portion 13 is located from the close position. Can be illuminated brightly and efficiently with the emission color of the LED element 22. Since the tungsten-based lamp is used as the second light source, the color of the character display portion 12 can be freely changed.

The mounting member 30 can reflect the lamp light on the character display portion 12 in the color of the material by considering the color of the material or the color of the coating. For example, if the material is white, a bright color can be selected, and conversely, if the material is black, a dark color can be selected.

[0017]

[Effect of device]

 As described above, since the light source mounting device of the present invention includes the mounting portion for disposing the first light source and the light shielding wall, the first light source can efficiently move the indicator portion of the push button from the close position. Well illuminated, the second light source directly illuminates the character display portion of the push button, and the light emitted to the side thereof is blocked by the light shielding wall, and does not affect the first light source. Therefore, even if the plurality of display units and the first light source and the second light source are arranged in close proximity to each other, the plurality of display units illuminated with different colors do not cause light interference and are excellent in design. It is possible to provide a lighting device.

[Brief description of drawings]

FIG. 1 is a perspective view showing the assembly arrangement of a push button lighting device of the present invention.

FIG. 2 is a cross-sectional view of a push button lighting device of the present invention.

FIG. 3 is a perspective view showing a conventional push button illumination device.

[Explanation of symbols]

 10 push button 11 push button operation surface 12 character display section 13 indicator section 21 second light source (lamp) 22 first light source (LED) 30 light source mounting device (member) 31 mounting section 32 holding section 35 light shielding wall

Claims (1)

[Scope of utility model registration request] 1. A light source mounting device for a push button lighting device, wherein a plurality of light sources are arranged behind a single push button, and a plurality of display portions formed on an operation surface of the push button are individually illuminated by the light sources. In the above, a mounting portion for disposing the first light source and a light shielding wall which stands upright between the mounting portion and a second light source arranged adjacent to the first light source and shields light are provided. A light source mounting device characterized by being provided.