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Illumination type keyboard switch

A keyboard switch and lighting technology, which is applied in the direction of electric switches, instruments, electric digital data processing, etc., can solve the problems of time required for wiring board installation, dimming of lighting, high cost, etc.

Inactive Publication Date: 2006-01-04
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Therefore, in the illuminated keyboard switch of the above-mentioned prior art, since the button is illuminated by the light-emitting diode 12 having directivity in the light-emitting direction, when there is the display portion 1A at a position deviated from the light-emitting direction of the light-emitting diode 12, lighting dimmed
In addition, in the case of arranging a plurality of such push button switches, since the number of light emitting diodes corresponding to the number of push buttons is necessary, the number of components used is increased, and the installation on the wiring board also takes time, and there is a problem of high cost.

Method used

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  • Illumination type keyboard switch
  • Illumination type keyboard switch
  • Illumination type keyboard switch

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0033] figure 1 is a partial sectional view of the illuminated keyboard switch of the first embodiment of the present invention, figure 2 is its exploded oblique view. In the figure, on the button 1 made of insulating resin such as ABS, polycarbonate, or acrylic, after performing two-color molding processing of superimposing the translucent resin on the opalescent translucent resin and applying a light-shielding paint, The display portion 1A of characters, symbols, patterns, etc. is formed by laser processing or the like.

[0034] The bowl-shaped elastic member 2 made of silicon rubber or elastic body stores energy for the upward movement of the button 1 . 3 is a sheet in which movable contacts 3A such as silver or carbon are formed under a transparent insulating film such as polyethylene terephthalate or polyimide, and 4 is a sheet in which fixed contacts 4A are formed on the same insulating film. The upper sheet 3 and the lower sheet 4 are bonded together with the gaske...

no. 2 example

[0047] In the following description, the same symbols are assigned to the same components as those of the first embodiment, and detailed description thereof will be omitted.

[0048] Figure 6 is a partial sectional view of an illuminated keyboard switch according to a second embodiment of the present invention, Figure 7 is its exploded oblique view, in Figure 6 and Figure 7 Among them, the point that the membrane switch 6 composed of the upper sheet 3 having the movable contact 3A and the sheet 4 having the fixed contact 4A is disposed under the button 1 of the display portion 1A on which characters, symbols, patterns, etc. are formed is the same as that of the first embodiment. Example is the same.

[0049] In addition, the electroluminescent element 15 is arranged under the membrane switch 6 through the protective sheet 10, which is also the same as the first embodiment, but the upper ends of the first elastic frame body 17 and the second elastic frame body 18 made of...

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PUM

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Abstract

A cup-shaped elastic member 2 forces push button 1 upwardly that has indication part 1A formed thereon. Light transmitting electrode layer 15B, light-emitting layer 15C, and back electrode layer 15E are sequentially formed on light transmitting sheet 15A to form EL element 15, and the EL element is disposed on the upper or lower face of membrane switch 6. This structure can provide an inexpensive illuminated keyboard switch that allows clear illumination of the push button and uses a smaller number of components.

Description

technical field [0001] The present invention relates to an illuminated switch used as an input device for various electronic devices such as personal computers and word processors. Background technique [0002] In recent years, with the wide spread of electronic equipment such as personal computers and word processors, the multifunctionalization of keyboard switches used as these input devices is also progressing; Text, symbols, patterns, etc. display. [0003] use below Figure 13 ~ Figure 15 A prior art illuminated keyboard switch will be described. [0004] Figure 13 is a partial sectional view of an illuminated keyboard switch in the prior art, Figure 14 yes Figure 13 An exploded oblique view of a keyboard switch. In these two figures, a display portion 1A of milky-white light-guiding characters, symbols, patterns, etc. is formed on an insulating resin button 1 by two-color molding. [0005] The bowl-shaped elastic member 2 made of rubber ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/00H01H13/02H01H13/12H01H13/70H01H3/12H01H13/14H01H13/702
CPCH01H3/125H01H2219/018G06F3/0202
Inventor 堂薗重隆阿部芳晴
Owner PANASONIC CORP