CN201311617Y

CN201311617Y - Illuminated keyboard

Info

Publication number: CN201311617Y
Application number: CNU200820175717XU
Authority: CN
Inventors: 陈世洲; 林育生
Original assignee: 'XINGLONGFA ELECTRONIC Co Ltd
Current assignee: 'XINGLONGFA ELECTRONIC Co Ltd; Litek Opto-Electronics Co Ltd
Priority date: 2008-10-22
Filing date: 2008-10-22
Publication date: 2009-09-16
Anticipated expiration: 2018-10-22

Abstract

The utility model relates to an illuminated keyboard, and relates to the class of electromechanical equipment. The illuminated keyboard comprises a plurality of keystokes, at least a light source, a light guide plate and a reflection plate, wherein, the light guide plate arranged below the press keys is provided with at least a first side surface and a second side surface; rays produced by the light source injects the first side surface; the second side surface is perpendicular to the first side surface, and close to the press keys or arranged above the first side surface; the second side surface is provided with complex rough surfaces; the reflection plate is arranged below the light guide plate. The illuminated keyboard has the advantages of simple structure, convenient use, light loss reduction and high practicality; and as the rough surfaces are arranged on the second side surface, and the scattering distance is short and rays are relatively centralized during scattering, the illuminated keyboard can more accurately control the direction of light scattering and enable light to be centralized in positions of the press keys where luminescence is really needed.

Description

Illuminated keyboard

Technical field

The utility model relates to electrical category, particularly a kind of illuminated keyboard.

Background technology

As everyone knows, keyboard structure with module backlight is used and is made keyboard have illumination effect to have used widely at the keyboard of computer system or slide-mouse, or even the keyboard of mobile phone, also there is increasing mobile phone manufacturer to be provided with module backlight, uses making cell phone keyboard have illumination effect at cell phone keyboard.

As shown in Figure 1, the keyboard 1 of effect backlight commonly used includes light guide plate 12, light guide plate 12 is that the good material of translucent effect constitutes, use at least one light source 11 and form light guide effect, light guide plate 12 includes at least the first side 121, second side 122 and the 3rd side 124, this first side 121 can be for light 111 incidents of light source 11 generations, second side 122 is provided with a plurality of sizes and the different salient point 123 of density, can be for light 111 reflections and diffusion, the 3rd side 124 can be passed through for the light 111 through diffusion and outwards penetrate, but second side also is provided with the reflection horizon 13 of reflection ray 111 for 122 times, when the light 111 of light source 11 is gone into to inject light guide plate 12 by first side 121, light 111 can be in light guide plate 12 internal radiations, when light 111 exposes to salient point 123, salient point 123 can further reflex to button 14 places so that light 111 exposure pathways change, and uses making that button 14 is luminous.

But the keyboard 1 of above-mentioned effect backlight is in use, still has following point:

One, because salient point 123 is located at second side 122 of light guide plate 12, when light 111 exposes to salient point 123 and when changing reflection of light 111 paths and diffusion, the 3rd side 124 that light 111 also must pass light guide plate 12 exposes to button 14 places, but has caused the consume of light 111 refractions;

Two, because salient point 123 is located at second side 122 of light guide plate 12, when light 111 exposes to salient point 123 and when changing the reflection of light 111 paths and diffusing to button 14 places, because light 111 also must pass the 3rd side 124, light 111 reflective distances are far away excessively, the light 111 that exposes to button 14 places too spreads, and need be improved.

The utility model content

The purpose of this utility model is to provide a kind of illuminated keyboard, has solved the consume that backlight keyboard commonly used easily causes light refraction, and the light that exposes to the button place such as too spreads at problem.

The technical solution of the utility model is: include plural button; At least one light source; Light guide plate is located at the below of button, and light guide plate has at least one first side and one second side, this first side of the light incident that light source produced, second lateral vertical is in first side, and is adjacent to button or is located at the top of first side, and this second side is provided with a plurality of uneven surfaces; Reflector plate is located at the light guide plate below;

Wherein, the uneven surface size has nothing in common with each other with density;

Uneven surface is that printing ink screen painting or sandblast are processed into;

Light source be relevant light-emitting components such as light-emittingdiode, CCFL (Cold Cathode Fluorescent Lamp cathode fluorescent tube) or electroluminescence sheet one of them;

Illuminated keyboard be located at notebook computer, desktop computer, slide-mouse or mobile phone one of them.

Advantage of the present utility model is: simple in structure, easy to use, reduced the consume of light, again because uneven surface is arranged on second side, when scattering since scattering apart from weak point, light is more concentrated, direction that can more accurate control light scattering, allowing light concentrate on button really needs luminous position, practical.

Description of drawings:

Fig. 1 is the keyboard cross-sectional schematic of effect backlight commonly used;

Fig. 2 is a schematic perspective view of the present utility model;

Fig. 3 is a perspective exploded view of the present utility model;

Fig. 4 is a cross-sectional schematic of the present utility model;

Fig. 5 is one of action synoptic diagram of the present utility model;

Fig. 6 is two of an action synoptic diagram of the present utility model;

Fig. 7 moves synoptic diagram for embodiment of the present utility model.

Embodiment:

To shown in the accompanying drawing 4, the utility model illuminated keyboard 2 comprises plural button 3 as accompanying drawing 2, this button 3 can be located at notebook computer, desktop computer, slide-mouse or mobile phone one of them;

At least one light source 4, this light source 4 can for relevant light-emitting components such as light-emittingdiode, CCFL (Cold CathodeFluorescent Lamp cathode fluorescent tube) or electroluminescence sheet one of them;

Light guide plate 5, this light guide plate 5 is located at the below of these buttons 3, and this light guide plate 5 is that the good material of translucent effect is made, and this light guide plate 5 includes at least one first side 51, the light incident that this first side 51 can supply light source 4 to be produced; Second side 52, this second side 52 is perpendicular to first side 51, and is adjacent to these buttons 3, and this second side 52 is provided with a plurality of uneven surfaces 521, these uneven surfaces 521 can use printing ink screen painting or sandblast to be processed into, but do not cause only for the above method of stating;

Reflector plate 6, this reflector plate 6 is located at light guide plate 5 belows, and this reflector plate 6 is reflection ray effectively.

Shown in accompanying drawing 5 and accompanying drawing 6, when light source 4 produces first side 51 of light 41 and incident light guide plate 5, light 41 can be in light guide plate 5 internal radiations, wherein, because light guide plate 5 belows are provided with reflector plate 6, when light 41 exposes to reflector plate 6, promptly can reflect and make in the light 41 reflected back light guide plate 5, when light 41 exposed to the uneven surface 521 of second side 52, light 41 promptly can change light 41 paths and scatter to button 3 places because of uneven surface 521, wherein again, because uneven surface 521 is located at second side 52, light 41 can directly scatter to button 3 places, needn't can effectively reduce the consume of light again through refraction once more in the light guide plate 5.

Moreover, because uneven surface 521 is located at second side 52, when light 41 scatterings because the scattering distance is shorter, light 41 expose to by penetrate 3 o'clock can be more concentrated, direction that can more accurate control light scattering, allowing light concentrate on button 3 really needs luminous positions.

As shown in Figure 7, when light incides first side 51 of light guide plate 5, because light may be because the refraction hypertelorism causes light to weaken in light guide plate 5, further may cause the luminance shortage when scattering to button 3 places, so, it is inequality with density that these uneven surfaces 521 can be set to size, and button 3 luminance shortage places promptly can be set to uneven surface 521 bigger and closeer, use obtaining more light.

Claims

1, a kind of illuminated keyboard is characterized in that: include plural button; At least one light source; Light guide plate is located at the below of button, and light guide plate has at least one first side and one second side, this first side of the light incident that light source produced, second lateral vertical is in first side, and is adjacent to button or is located at the top of first side, and this second side is provided with a plurality of uneven surfaces; Reflector plate is located at the light guide plate below.

2, illuminated keyboard according to claim 1 is characterized in that: described uneven surface size has nothing in common with each other with density.

3, illuminated keyboard according to claim 1 is characterized in that: described uneven surface is that printing ink screen painting or sandblast are processed into.

4, illuminated keyboard according to claim 1 is characterized in that: described light source be light-emittingdiode, cathode fluorescent tube or electroluminescence sheet one of them.

5, illuminated keyboard according to claim 1 is characterized in that: described illuminated keyboard be located at notebook computer, desktop computer, slide-mouse or mobile phone one of them.