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Keyboard device

A technology for a keyboard device and a key cover, which is applied to emergency protection devices, layers, legends, etc., can solve the problems of increased cost, insufficient illumination of the display portion, illumination, etc., and achieves reduction of uneven brightness, bright and uniform illumination, The effect of improving utilization efficiency

Inactive Publication Date: 2010-11-24
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, light cannot be concentratedly irradiated on the display portion of each key cover that needs to be illuminated, and there is a problem of insufficient illumination of the display portion (insufficient brightness).
[0016] Moreover, if the light is to be irradiated over the entire surface (large area) of the light guide sheet, the number of arrangement of natural light sources will increase, leading to an increase in cost.
[0017] In addition, in the existing structure, the number of components stacked and arranged under the key cover is large, which is contrary to the requirements of thinning the keyboard device and reducing the manufacturing cost.

Method used

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Examples

Experimental program
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Embodiment Construction

[0095] Figure 1 to Figure 7 The illustrated keyboard device 1 of this embodiment is installed in a book-type, notebook-type, or desktop personal computer or the like.

[0096] figure 1 is a cross-sectional view showing a part of a plurality of key input units 3 arranged on the upper surface of a metal plate 2 serving as a base substrate in the vertical direction and the lateral direction. The base board is housed in a not-shown housing of the keyboard device 1 . As will be described below, the key input unit 3 matches the size of the key cap 4 respectively arranged, and the length dimension in the lateral direction is different, but the configuration is substantially the same except for that.

[0097] as it should figure 1 As shown, on the metal plate 2, the membrane sheets 20 constituting the membrane switch and the lighting mechanism 30 are sequentially overlapped and fixed, and the key cover 4 is provided at a position away from the metal plate 2 upward.

[0098] On ...

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PUM

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Abstract

The light guiding member includes: a light guiding member body which is provided with a light propagating portion which extends in the length and width directions within the surface of the light guiding member body so as to open switch openings at positions corresponding to the arrangement positions of the key tops and to propagate the light to the inside of the light guiding member body, and reflection illumination portions, each of which extends from the light propagating portion to the inside of each of the switch openings so as to be interposed in a space between the key top and the membrane switch; a light shielding member which is disposed on the upper surface of the light guiding member body so as to interrupt light leaking upward from the light propagating portion; and a reflection member which is disposed on the lower surface of the light propagating portion and the reflection illumination portions so as to reflect the light, leaking downward from the light guiding member body, toward each key top.

Description

technical field [0001] The present invention relates to a keyboard device in which contacts are brought into contact by pressing a key cover, and more particularly to a keyboard having a function of illuminating the key cover with light from the back. Background technique [0002] In recent years, a keyboard device having a function of illuminating each key top with light from the back and enabling the key top to be visually recognized in a dark place has been used. [0003] exist Figure 8 Among them, a keyboard device with an existing structure of an illuminating device is shown. [0004] This keyboard device 101 is configured such that the rubber dome 112 is flexed by the pressing operation of the key cover 104, and the contacts of the wiring board formed on the film sheet 120 stacked on the metal plate 102 as the base board are formed. The input unit 124 is electrically connected to generate an input signal. As an illumination mechanism 130 for illuminating the key cove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/83
CPCH01H2219/044H01H2209/082H01H2219/06H01H2219/062H01H13/83
Inventor 真船贵仁山田直树石田昌大
Owner ALPS ALPINE CO LTD
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