CN201117515Y

CN201117515Y - Push button symbol light emitting keyboard

Info

Publication number: CN201117515Y
Application number: CNU2007200587849U
Authority: CN
Inventors: 周飞跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-26
Filing date: 2007-10-26
Publication date: 2008-09-17
Anticipated expiration: 2017-10-26

Abstract

The utility model aims at providing a key symbol luminous keyboard with good luminescence effect and low cost. A key cap (1), elastic silica gel (2), a film switch (3) and a casing (5) are orderly overlapped and installed. The film switch (3) is connected with a circuit board (9). A symbol at the key surface of the key cap (1) is arranged as a transparent part (10). A light guide panel (4) is arranged between the film switch (3) and the casing (5). A luminous body is arranged at the side of the light guide panel (4) or arranged inside the concave pit of the light guide panel (4). The light guide panel (4) is provided with at least one concave table (6) at the position exactly under each key cap (1), and the concave face of the concave table (6) is provided with flower patterns. The key symbol luminous keyboard has the beneficial effects that the concave table of the light guide panel is added with the flower patterns, which ensures that the beam of light emitted outwards from the key surface is brighter, and the key surface symbol is clearer; an LED is used as the luminous body, which effectively reduces the production cost and saves energy.

Description

A kind of key symbols illuminated keyboard

Technical field

The utility model relates to computer, electronic equipment is used the keyboard technique field, more particularly, relates to the irradiative keyboard of a kind of key symbols.

Background technology

Current computer equipment has been widely applied each enterprise, family, and for cooperating different environments for use, the peripheral equipment of computer also all derives various specific functions, to adapt to people's special instructions for use.This wherein also comprises the keyboard with button lighting function.The method that existing button illuminated keyboard is adopted is: keycap, elastic force silica gel, thin film switch, EL light tiles, housing stack gradually installation, and circuit board is connected with thin film switch and is fixed on the housing.But this method has its weak point: at first light penetrates rather than penetrates by the key face from the keyboard periphery, make that the brightness contrast peripheral with it of key face is too big, so that the key face is as dark face, its symbol presents clear inadequately, secondly the EL luminous plaque is as light source, a little less than its luminous intensity, manufacturing cost is also higher.

Summary of the invention

The purpose of this utility model provides good, the with low cost key symbols illuminated keyboard of a kind of illumination effect.

For achieving the above object, the utility model is taked following technical scheme:

A kind of key symbols illuminated keyboard, keycap, elastic force silica gel, thin film switch, housing stack gradually installation, circuit board and thin film switch link together, symbol on its keycap key face is the transmittance section, it also comprises at least one light guide plate and a luminous element, described light guide plate is between thin film switch and housing, and described luminous element is other or be in the pit of light guide plate in light guide plate.

The position of described light guide plate under each keycap is provided with at least one concave station, on the concave surface of concave station decorative pattern arranged.

Described decorative pattern is a dimpled grain.

Described dimpled grain can be spark line, knife mark, etching line or polishing line etc. by the processing method branch.

The material of described light guide plate is PMMA, PC, GPPS or transparent ABS etc.

Described luminous element is LED.

The power supply of described luminous element is obtained by circuit board or internal cell place.

Below principle of the present utility model is described:

Luminous element emits beam after circuit board or internal cell are obtained power supply, after light passes to light guide plate, will and reflect at the light guide plate internal communication, refraction and scattering.Like this, the brightness meeting that presents in the bigger place, plane of light guide plate of light is more weak and relatively evenly.Owing to be full of decorative pattern on the concave surface of concave station on the light guide plate, make light uprise, thereby make this place become the light concentration zones that brightness is also brighter at the probability of happening of the reflection at this place, refraction, scattering.Described decorative pattern is complicated more, and light concentrates on this zone more.Light penetrates thin film switch, elastic force silica gel after penetrating light guide plate from this zone, and part can then penetrate by the transmittance section of keycap key face, and remaining can penetrate at the keycap periphery.Described keycap key face transmittance section is the symbol on the key face.

Described key symbols illuminated keyboard, it can be by installing a switch additional so that close light between luminous element and power supply.

The beneficial effects of the utility model are: on the concave station of light guide plate, increase decorative pattern, make by key towards outside the light that sends brighter, key face symbol is more clear, with LED as luminous element, effectively than low production cost and energy savings.

Description of drawings

Fig. 1 is the location diagram of light guide plate, LED and the circuit board of the utility model embodiment;

Fig. 2 is the structure chart of the utility model embodiment;

Fig. 3 is the utility model embodiment keycap structure chart;

Description of reference numerals: 1-keycap; 2-elastic force silica gel; The 3-thin film switch; The 4-light guide plate; The 5-housing; The 6-concave station; The 7-dimpled grain; 8-LED; The 9-circuit board; The 10-transmittance section.

Embodiment

Below in conjunction with drawings and Examples the utility model content is described further.

As shown in Figure 1, making a thickness with the PMMA material is 1mm, with the matched light guide plate 4 of keyboard, in light guide plate 4 bottom surfaces, a thickness is set is 0.5mm in the position under the keycap 1, size and the similar concave station 6 of key face, netted dimpled grain 7 is arranged on the concave surface of concave station 6, and its dimpled grain height is 0.05mm; In one side of light guide plate 4 some LED8 are set, with the lamp holder of LED8 side over against light guide plate 4; LED8 is connected with circuit board 9.

As shown in Figure 2, keycap 1, elastic force silica gel 2, thin film switch 3, light guide plate 4, housing 5 stack gradually installation; Circuit board 9 is connected with thin film switch 3, and is fixed on the housing 5.

As shown in Figure 3, the symbol of keycap 1 is transmittance section 10.Make keycap 1 with light transmissive material such as PMMA, on keycap 1 key face, spray one deck shading oil, pass through laser engraving with the shape of a certain symbol then, wipe part shading oil, thereby make the symbol of this keycap 1 become transmittance section 10 (symbol is used for for example among the figure, and practical application is not as limit).

What this specification was enumerated is better embodiment of the present utility model only, and all equivalent technologies conversion of being done under operation principle of the present utility model and thinking all are considered as protection range of the present utility model.

Claims

1, a kind of key symbols illuminated keyboard, keycap (1), elastic force silica gel (2), thin film switch (3), housing (5) stack gradually installation, and thin film switch (3) is connected with circuit board (9), and the symbol on keycap (1) the key face is transmittance section (10); Comprise at least one light guide plate (4) and a luminous element; Described light guide plate (4) is between thin film switch (3) and housing (5); Described luminous element is other or be in the pit of light guide plate (4) in light guide plate (4); The position of described light guide plate (4) under each keycap (1) is provided with at least one concave station (6), it is characterized in that: on the concave surface of described concave station (6) decorative pattern is arranged.

2, key symbols illuminated keyboard according to claim 1 is characterized in that: described decorative pattern is dimpled grain (7).

3, key symbols illuminated keyboard according to claim 2 is characterized in that: described dimpled grain (7) can be one of spark line, knife mark, etching line or polishing line by the processing method branch.