EP0554084A2
Expired / Lapsed
EP
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Structure of an illumination type key top
Assignee: NEC Corp
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Filing: 1993-01-28
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Granted: —
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Expires: 2013-01-28
Abstract
Abstract An illumination type key top having a button, a key seat, a key switch including a contact portion, and a light source. When the button is pressed, it presses the contact portion of the key switch via the key seat to cause the light source to emit light. The button and key seat are affixed to each other by adhesive, and each is made of a light transmitting material. A character or similar information is printed on the rear surface of the button such that the light is transmitted only through the character.
Inventors
- 👤 Fumiyuki C/O Nec Corporation Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:27
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/702; H01H13/705; H01H2219/00; H01H2219/002; H01H2219/014; H01H2219/028; H01H2221/00; H01H2221/002; H01H2221/006; H01H2221/07
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
73 words
A key top capable of displaying predetermined information when illuminated by light issuing from a light source built in said key top, comprising: a button made of a light transmitting plastic; a key seat made of a light transmitting elastic material and affixed to said button; and a key switch for radiating the light from the light source by being operated by said button via said key seat when said button is pressed.
Claim 2
Dependent Claim
28 words
A key top as claimed in claim 1, wherein said button is connected at a rear surface thereof to a front surface of said key seat by adhesive.
Claim 3
Dependent Claim
23 words
A key top as claimed in claim 2, wherein the predetermined information comprises a character printed on said rear surface of said button.
References Cited (Backward Citations)
No citation records indexed.
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