CN201218465Y - Light emitting module and keyboard - Google Patents

Abstract

The utility model discloses a keyboard and light emitting module thereof. The light emitting module comprises a first light source, a first light guide element, a first reflecting element and a second light source. The first light guide element is provided with a first groove, and the first light source is positioned in the first groove. The first reflecting element is provided with at least one opening and is positioned below the first light guide element. The second light source is positioned under the first reflecting element, and light rays generated by the second light source are presented through the opening.

Description

Light-emitting module and keyboard

technical field

The utility model relates to a light-emitting module, in particular to a light-emitting module capable of partially emitting light of different colors and a keyboard with the light-emitting module.

Background technique

With the popularization of computers and electronic devices, there are more and more electronic products with key input operations such as computers, translators, and mobile phones at home. However, users often cannot operate these electronic products smoothly in dark environments or places with weak light .

In order to continue to operate the keyboard or keys in a dark environment, one of the existing methods is to install a cold light plate inside the keyboard as a light source. Gives a glowing effect. However, this type of cold light panel can only emit a single color of light, and the luminous keyboard can only display one luminous color. Therefore, the way for users to distinguish all the keys on the keyboard can only be distinguished by the degree of illumination to illuminate the keys. Another approach is to install a light emitting diode (LED) or organic light emitting diode (OLED) under each key as a point light source. However, installing an LED light under each key will not only lead to an increase in cost, but also cause a problem of poor heat dissipation of the keyboard.

Therefore, there is a need for a design that can provide the user with a keyboard or keys to operate the electronic device in a dark environment. It is preferable to provide a luminous keyboard with different color blocks, thereby improving the user's ability to press and type in a dark environment. to the correctness of the correct keys.

Utility model content

An object of the present invention is to provide a light-emitting module that is easy to assemble and can reduce production costs for partially emitting light of different colors.

The purpose of this utility model is achieved by providing a light emitting module, which includes a first light source, a first light guide element, a first reflective element and a second light source. The first light guide element has a first groove, and the first light source is located in the first groove. The first reflection element has at least one opening and is located under the first light guide element. The second light source is located under the first reflection element, and the light generated by the second light source is presented through the opening.

In another embodiment, the light emitting module further includes a second light guide element having a second groove, and the second light source is located in the second groove. In yet another embodiment, the light emitting module further includes a light-shielding element located on the first light-guiding element, and the light-shielding element has a predetermined pattern to reduce light scattering. In the foregoing embodiments, the first light source and the second light source of the light emitting module generate light of different colors.

Another object of the present invention is to provide a keyboard with blocks of different luminous colors, so that the user can speed up the correctness of pressing and typing the keys through the blocks of different luminous colors.

In one embodiment, the present invention provides a keyboard, which includes a key module and a light emitting module located under the key module. The light emitting module includes: a first light source; a first light guide element with a first groove, and the first light source is located in the first groove; a first reflection element with at least one opening, located under the first light guide element; And the second light source is located under the first reflection element, and the light generated by the second light source is presented through the opening, wherein the first light source and the second light source generate light of different colors, so that the key module has different color blocks.

In another embodiment, the light-emitting module of the keyboard further includes a light-shielding element located on the first light-guiding element, and the light-shielding element has a predetermined pattern to reduce light scattering. In yet another embodiment, the light emitting module of the keyboard further includes a third light source located under the opening of the first reflective element, and the first light source, the second light source, and the third light source emit light of different colors. In the foregoing embodiments, the first light source and the second light source are light emitting diodes (LEDs) that generate light of different colors.

The utility model has the advantage that, due to the design of its light-emitting module, it can provide the user to continue to use the keyboard or keys to operate the electronic device in a dark environment, and can also provide a light-emitting keyboard with different color blocks, thereby improving the user's The correctness of pressing and typing to the correct key in a dark environment, the keyboard is low cost and easy to use.

In conjunction with the description of the following preferred embodiments and the accompanying drawings, the purpose, embodiments, features and advantages of the present utility model will become clearer.

Description of drawings

In order to make various objects and features of the present invention easy to understand for those skilled in the art, a detailed description is provided below in conjunction with the accompanying drawings.

Fig. 1 is a schematic cross-sectional schematic diagram of a keyboard according to the first embodiment of the present invention;

Fig. 2 is a three-dimensional exploded schematic view of the light emitting module in the first embodiment according to the present utility model;

Fig. 3 is a schematic cross-sectional view of a luminous keyboard according to the second embodiment of the present invention;

Fig. 4 is a schematic cross-sectional view of a luminous keyboard according to the third embodiment of the present invention.

Description of main component symbols

10, 30, 40 keyboard

100 key module

200, 300, 400 Light-emitting modules

112, 114, 314, 316, 414 buttons

120 Support body

130 Thin circuit board

220 shading element

225 Translucent part

230 The first light guide element

235 First Groove

240, 340, 440 first reflective element

245, 345, 346, 445 openings

270 The first light source

280, 480 Second light source

390 The third light source

450 Second light guide element

455 Second Groove

460 Second reflective element

Detailed ways

Preferred embodiments of the present utility model will be exemplified below with reference to the accompanying drawings. Similar elements in the accompanying drawings are provided with the same reference numerals. It should be noted that in order to clearly present the utility model, the components in the attached drawings are not drawn according to the scale of the actual object, and in order to avoid blurring the content of the utility model, the following description also omits existing components, related materials and related processes technology.

Referring to FIG. 1 , it is a schematic cross-sectional view of a keyboard 10 according to the first embodiment of the present invention. In the first embodiment, the keyboard 10 is illustrated by taking a notebook computer, a desktop computer, etc. as an example for providing input signals, but it is not limited thereto. The "keyboard" referred to in the present invention can also be any input unit that provides key input signals, such as the input keys of a mobile phone, the input keys of a language translator, and the like. The keyboard 10 mainly includes a key module 100 and a light emitting module 200 located under the key module 100 . The button module 100 is mainly composed of a plurality of buttons 112, 114, a support body 120, a thin circuit board 130, etc., and is used to display the signals input by the user through the plurality of buttons 112, 114 on the screen, or provide instructions to the computer. Used to control the programs that are executed.

As shown in FIG. 1 , the light-emitting module 200 is composed of a light-shielding element 220 , a first light-guiding element 230 having a first groove 235 , a first reflecting element 240 having at least one opening 245 , and being disposed in the first groove 235 . The first light source 270 and the second light source 280 arranged under the opening 245 constitute, wherein the light generated by the second light source 280 passes through the opening 245 and presents on a corresponding part of the button module 100 (such as the button 114), so that the button module 100 There are different color blocks (detailed later).

Referring to FIG. 2 , it is an exploded perspective view of the light emitting module 200 according to the first embodiment of the present invention. The light-shielding element 220 can be a resin film with light-shielding pigments, such as polyethylene terephthalate (PET) film or polyvinyl chloride (PVC) film with black pigment. The shading element 220 has a predetermined pattern (as shown in FIG. 2 ) for passing through the light emitted by the first light source 270 and/or the second light source 280 and reducing light scattering. In the first embodiment, the predetermined pattern of the shading element 220 has a plurality of light-transmitting portions 225, so that the light guided by the first light guide plate 230 can be presented on the predetermined key (such as the key 112), And in order to prevent the light from scattering from the gaps of the keys, the size of the light-transmitting parts 225 on the light-shielding element 220 can be designed to be slightly smaller than the size of the key surface. It should be understood that, in another embodiment of the light-shielding element 220 , the shape, quantity and size of the light-transmitting portions 225 of the predetermined pattern can be changed according to design requirements.

Referring to FIG. 1 and FIG. 2 , the first light guide element 230 is located under the light shielding element 220 , and the first groove 235 is located on a side of the first light guide element 230 , and the first light source 270 is disposed in the first groove 235 . In this embodiment, although the left and right sides of the first light guide element 230 each have four first grooves 235 provided with the first light source 270 as an example for illustration, it is not limited to this, and those with ordinary knowledge should know The number and position distribution of the first grooves 235 provided with the first light source 270 can also be changed according to design requirements, for example, they are arranged in the central area and/or the upper and lower sides of the first light guide element 230 . The first light guide element 230, such as a thin light guide plate (LGP), can be made of polycarbonate (PC) or polymethyl methacrylate (PMMA) with high optical transparency, as a light source transmission medium , the light emitted by the first light sources 270 on both sides can be evenly sent out on the effective light-emitting surface, and pass through the light-transmitting portion 225 of the light-shielding element 220 so that the key module 100 has a first color block (such as a key 112).

In addition, the first reflective element 240 is located under the first light guide element 230 for reuse of the light emitted downward from the first light guide element 230 , so as to improve light usage efficiency and prevent light from escaping. The material of the first reflective element 240 can be existing polyethylene terephthalate (PET) film with reflective coating or aluminum metal film. It should be noted here that in one embodiment of the present invention, the first reflective element 240 may have at least one opening 245, so that the light generated by the second light source 280 located below the first reflective element 240 can pass through the opening 245 and present , so that the button module 100 has a second color block (such as the button 114). Preferably, the second light source 280 is located below the openings 245 of the first reflective element 240 , so that the light passing through the openings 245 can be concentrated on the corresponding key (such as the key 114 ). In this embodiment, the first reflective element 240 has three openings of different shapes, such as rectangular, circular, T-shaped, etc. (as shown in FIG. , the position, size and shape of the opening 245 can be varied according to application requirements.

A light emitting diode (LED) element has the advantages of high brightness, high luminous efficiency, low power consumption, and high reliability, and can be easily arranged in a light guide element due to its small size. The light emitting diode elements may include white LEDs, red LEDs, blue LEDs, yellow LEDs, green LEDs, or multi-color LEDs. Multi-color LEDs also have larger LEDs with several LEDs in the same bulb, such as RGB LEDs with red LEDs, blue LEDs and green LEDs. Because the multi-color LED is large in size, when using the multi-color LED as a light source, it is necessary to use relatively thicker light guide elements. In the present invention, the first light source 270 and the second light source 280 are light-emitting diode (LED) elements that emit light of different colors, so that the button module 100 has different color blocks. For example, the first light source 270 can be a white LED, and the second light source 280 can be a red LED, then the key module 100 will have a first color block (such as the key 112) formed by white light and a combination of white light and red light. The second color block (such as the button 114 ) formed by mixing.

As far as computer game players are concerned, keys such as A, S, D, W, space, direction keys, and enter are the most commonly used keys in games. The correctness of pressing and typing the correct key in a dark environment, and reducing the situation of key mistyping. In the keyboard 10 illustrated in the first embodiment of the present invention, by setting the first light source 270 in the first light guide element 230, the key 112 of the key module 100 has a first color block and can emit different colors. The second light source 280 of light is arranged below the opening 245 of the first reflective element 240. The shape and position of the opening 245 are relative to the positions of keys such as A, S, D, W, space and input (enter), so that the keyboard 10 is placed on the key module. The keys 114 of the 100 such as A, S, D, W, space and enter (enter) have second color blocks for distinguishing these keys.

Referring to FIG. 3 , it is a schematic cross-sectional view of a luminous keyboard 30 according to the second embodiment of the present invention. The light-emitting keyboard 30 described in the second preferred embodiment includes a key module 100 and a light-emitting module 300, wherein the description of the same or similar parts as the first specific preferred embodiment will not be repeated here, such as the key module 100, light-shielding A description of the position or function of the element 220 , the first light guide element 230 , the first light source 270 , the second light source 280 and their related components. In this embodiment, the light emitting module 300 further includes a third light source 390 located under the first reflective element 340, and the third light source 390 is a light emitting diode element that generates light of a different color from the first light source 270 and the second light source 280, For example blue LED. In addition, in this embodiment, the first reflective element 340 has openings 345 and 346 , and as shown in the figure, the openings 345 and 346 correspond to different keys 314 and 316 in the key module 100 respectively. As mentioned above, the buttons 314 and 316 corresponding to the openings 345 and 346 can be buttons such as A, S, D, W, etc. often used by computer game players, and blank keys, etc., and can also be changed according to actual design needs.

As shown in FIG. 3 , the second light source 280 and the third light source 390 of the light emitting module 300 are located below the openings 345 and 346 of the first reflective element 340 respectively, so that the light rays of different colors emitted by the second light source 280 and the third light source 390 will be presented through openings 345, 346, respectively. Therefore, in addition to the key 112 having the first color block, the key module 100 can have the key 314 of the second color block and the key 316 of the third color block at the same time. Therefore, the user can improve the convenience and accuracy of finding keys and typing keys by having the keyboard 30 partially emitting light of different colors. It should be noted that although the present utility model uses light sources with 3 different light-emitting colors to provide 3 different color blocks in the button module, those with ordinary knowledge should understand that the utility model can also be designed according to the needs of the application , providing light sources with 4 or more different colors, so that the key module of the keyboard has 4 or more different color blocks.

Referring to FIG. 4 , it is a schematic cross-sectional view of a luminous keyboard 40 according to a third embodiment of the present invention. The light-emitting keyboard 40 described in the third embodiment includes a key module 100 and a light-emitting module 400 , and descriptions of the same and similar parts as those in the first embodiment will not be repeated here. In this embodiment, the light emitting module 400 further includes a second light guide element 450 having a second groove 455 and a second reflective element 460 located under the second light guide element 450 . The material of the second light guide element 450 can be the same as that of the first light guide element 230, such as polyethylene terephthalate (PET), but the utility model is not limited thereto, and can also be replaced with other materials depending on the situation. material. In addition, the second reflective element 460 is located under the second light guide element 450 to re-use the light emitted from the second light guide element 450 downwards, so as to improve the utilization rate of light and prevent light from escaping. The material of the second reflective element 460 can be the same as or different from the material used in the first reflective element 230, such as polyethylene terephthalate (PET) film or aluminum metal film with a reflective coating, the utility model is here Not restricted.

In this embodiment, the second light source 480 is disposed in the second groove 455, and the second groove 455 for setting the second light source 480 can be located at any position of the second light guide element 450, such as the side or the center . The light emitted by the second light source 480 can pass through the second light guide element 450 and guide to each opening 445 of the first reflective element 440, and through each opening 445, the corresponding key in the key module 100 (such as the key 414) Has a second color block. Therefore, when the number of corresponding keys with the second color block in the key module 100 increases, the utility model can utilize the design that the second light source is arranged in the second light guide element in the light emitting module, so that the utility model can be used without In the case that at least one light source (such as a light-emitting diode element) needs to be installed under the opening of each corresponding key, a keyboard with blocks of different light-emitting colors can still be provided at the same time.

Claims (16)

1. A light emitting module, characterized in that it comprises: a first light source; a first light guide element with a first groove, and the first light source is located in the first groove; a first reflective element with at least An opening is located under the first light guide element; and a second light source is located under the first reflection element, and the light generated by the second light source is presented through the opening. 2. The light emitting module according to claim 1, further comprising a second light guide element having a second groove, and the second light source is located in the second groove. 3. The lighting module according to claim 1, further comprising a second reflective element located under the second light source. 4. The light-emitting module according to claim 1, further comprising a light-shielding element located on the first light-guiding element, and the light-shielding element has a predetermined pattern to reduce light scattering. 5. The lighting module of claim 1, wherein the second light source is located under the opening of the first reflective element. 6. The light emitting module according to claim 1, wherein the first light source and the second light source generate light of different colors. 7. The light emitting module of claim 1, wherein the first light source and the second light source are light emitting diodes (LEDs) that generate light of different colors. 8. The lighting module according to claim 1, further comprising a third light source located under the first reflective element, and the first light source, the second light source and the third light source generate light of different colors . 9. The light emitting module according to claim 1, wherein the opening of the first reflective element comprises a rectangle, a circle or a T shape. 10. A keyboard, comprising: a key module; and a light-emitting module located under the key module, characterized in that the light-emitting module comprises: a first light source; a first light-guiding element having a first groove, and the first The light source is located in the first groove; the first reflective element has at least one opening and is located under the first light guide element; and the second light source is located under the first reflective element, and the light generated by the second light source passes through Through the opening, the first light source and the second light source generate light of different colors, so that the button module has different color blocks. 11. The keyboard as claimed in claim 10, further comprising a second light guide element having a second groove, located under the first reflective element, and the second light source is located in the second groove. 12. The keyboard as claimed in claim 10, further comprising a second reflective element located under the second light source. 13. The keyboard as claimed in claim 10, further comprising a light-shielding element located on the first light-guiding element, and the light-shielding element has a predetermined pattern for reducing light scattering. 14. The keyboard of claim 10, wherein the second light source is located under the opening of the first reflective element. 15. The keyboard as claimed in claim 10, further comprising a third light source located under the opening of the first reflective element, and the first light source, the second light source and the third light source emit lights of different colors. light. 16. The module of claim 10, wherein the first light source and the second light source are light emitting diodes.

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