CN201517740U

CN201517740U - LED lightproof shade

Info

Publication number: CN201517740U
Application number: CN2009202171729U
Authority: CN
Inventors: 陈先全
Original assignee: JIAXING CHUNXIANG ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: JIAXING CHUNXIANG ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2009-09-24
Filing date: 2009-09-24
Publication date: 2010-06-30
Anticipated expiration: 2019-09-24

Abstract

The utility model relates to an LED lightproof shade. The utility model is characterized in that the LED lightproof shade comprises a main body, wherein the upper surface and the lower surface of the main body are curved surfaces with the same radian, and the bending directions of the two curved surfaces are the same; a through hole is formed at the middle part of the main body, and a circular dummy club with a height of 0.1-0.3 mm is formed through extending a certain distance upwards from the edge of the through hole. In the LED lightproof shade, the light rays emitted by the LED arranged below the key can be partially shielded, and the light rays are not transmitted from the gap between the keys when the switching instruction of the key to the LED is seen, therefore, not only the appearance of the keyboard is not affected, but also the influence caused to the users is avoided; and furthermore, the production cost of the prior keyboard product to indicate the light-leakage processing for the LED can be reduced, and the production efficiency can be improved.

Description

The LED light shield

Technical field

The utility model relates to a kind of LED light shield, and the part light that this light shield is used for being installed on the LED of keyboard conversion keys below covers, and prevents that light from appearing between the space of button and button.

Background technology

Button part in electronic product has the LED that some indicate usefulness usually.A LEDs is all respectively arranged as indication when changing as buttons such as " Caps Lock " on the keyboard of notebook computer, " Num Lock ", continual renovation along with notebook, volume is more and more littler, the indication LED of existing good muliple keyboards moved to the keyboard respective keys below, promptly on the thin film switch.And on button, do a loophole, when LED is luminous, can see whether corresponding function being changed by loophole, but that can find LED when actual assembled luminously has a certain angle, generally be the luminous angles of 130 degree, so 130 degree angles are luminous towards periphery when LED lights, the space that this light can pass between keyboard drains to the outside, and outward appearance and the user to keyboard has bad influence like this.Can adopt some modes to handle for solving this light leakage phenomena in the prior art, but the cost of handling is higher, and extra processing has increased the working time again.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides a kind of LED light shield, this LED light shield has limited the lighting angle of LED, the light portion that the LED that button is provided with down can be sent covers, can make light not appear the space between button and button again when guaranteeing to see button LED conversion indication, the outward appearance that neither can influence keyboard can not impact the user again.

The utility model technical scheme that adopts of dealing with problems is:

The LED light shield comprises a body, and the upper surface of this body and lower surface are the curved surface with identical radian measure, and the bending direction of two curved surfaces is identical; The body pars intermedia also offers through hole, and extends upward segment distance formation one circle boss along the through hole edge.

Described boss height is 0.1-0.3mm.

The beneficial effects of the utility model: the light shield of a perforate on the upper cover of LED, this light shield can cover the light portion of LED emission, it is only penetrated in a less angle, solved keyboard space light leakage phenomena, and be a practicality, and convenient solution of producing.The production cost that present keyboard product indication LED light leak is handled can be solved greatly, and production efficiency can be improved.

Description of drawings

Fig. 1 is a profile of the present utility model;

Fig. 2 is a use schematic diagram of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

LED light shield 100 as shown in 1 figure, described light shield 100 comprises a body 1, the upper surface 11 of this body 1 and the curved surface of lower surface 12 for having identical radian measure, and the bending direction of two curved surfaces is identical; Body 1 pars intermedia also offers through hole 2, and extends upward segment distance formation one circle boss 3 along through hole 2 edges, and these boss 3 height are 0.1-0.3mm.

As shown in Figure 2, after sticking LED,, stick a light shield 100 of restriction LED lighting angle again in the LED top for preventing to appear the space of LED light between button at the computor-keyboard thin film switch.Light shield 100 adopts light-proof material to make, and when LED lighted, the through hole 3 that the light that sends can only see through on the light shield 100 emitted.Thereby for making the light that does not have the slit to guarantee that LED sends between light shield 100 and the button can only see through through hole 2, extend upward formation one circle boss 3 along through hole 2 edges, wherein formed an angle ∠ A that angle is less between boss 3 tops and the light source, the angle that ∠ A forms is the angle of light emission, the angle of ∠ A is 43 ° in the present embodiment, and before not using light shield, the luminous angle ∠ B of LED light is 130 °.

Wherein the size of through hole 2 can be offered according to actual conditions.If the hole of offering on conversion keys is near the button edge, for the light that guarantees LED does not see through space between the button, then the angle of light emission is smaller, so the through hole on the light shield 100 2 will be smaller.If the hole of offering on the conversion keys is near the button pars intermedia, then the angle of light emission just can become greatly, and through hole 2 just can be opened greatly.Because the big more Vietnamese side of through hole 2 in the production process on the light shield 100 just produces, therefore in actual conditions, produce for convenient, can have the hole at the button pars intermedia, thus through hole 2 just can open greatly.

The light shield 100 of a perforate on the upper cover of LED, this light shield 100 can the ambient light of LED lighting angle retaining inside solve keyboard space light leakage phenomena, and be a practicality, and convenient solution of producing.The production cost that present keyboard product indication LED light leak is handled can be solved greatly, and production efficiency can be improved.

Claims

1.LED light shield is characterized in that: described light shield comprises a body, and the upper surface and the lower surface of this body are curved surface, and the bending direction of two curved surfaces is identical; The body pars intermedia also offers through hole, and extends upward segment distance formation one circle boss along the through hole edge.

2. LED light shield as claimed in claim 1 is characterized in that: the upper surface of described body and lower surface are the curved surface with identical radian measure.

3. LED light shield as claimed in claim 1 is characterized in that: described boss is high to be 0.1-0.3mm.