CN112366109B

CN112366109B - Keyboard light module

Info

Publication number: CN112366109B
Application number: CN202011216166.9A
Authority: CN
Inventors: 刘创业; 刘杯
Original assignee: Shenzhen Kerui Optoelectronics Technology Co ltd
Current assignee: Shenzhen Kerui Optoelectronics Technology Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2023-03-24
Anticipated expiration: 2040-11-04
Also published as: CN112366109A

Abstract

The invention discloses a keyboard optical module, which comprises a module frame, wherein an inner cavity of the module frame is provided with a component groove, a middle reflector plate installation groove is formed in the bottom of the inner cavity of the component groove, four corners of the bottom of the component groove are fixedly connected with a fixed support, the bottom of the module frame is fixedly connected with a bottom plate, a reflector plate is fixedly connected in the middle of the supervising top, the top of the fixed support is fixedly connected with a rubber frame, a light guide plate is arranged in the inner cavity of the light guide plate installation groove, a fixing mechanism is arranged on the inner wall of the light guide plate installation groove and positioned above the light guide plate, black and white glue is arranged at the top of the rubber frame, a first diffusion sheet is bonded at the top of the black and white glue, a lower diffusion sheet is fixedly connected at the top of the first diffusion sheet, an upper diffusion sheet is arranged at the top of the lower diffusion sheet, a second diffusion sheet is arranged at the top of the upper diffusion sheet, and a light transmission groove is formed in the middle of the light shielding sheet.

Description

Keyboard light module

Technical Field

The invention relates to the technical field of keyboard optical modules, in particular to a keyboard optical module.

Background

The backlight keyboard adopts a high-brightness white light-emitting diode to be embedded into a designed keyboard clamping groove, when a computer receives a knocking instruction of the keyboard, the computer is controlled to be connected with a light signal of the light-emitting diode to emit light through the instruction, each key of the keyboard adopts a special quality black part which has good light-shielding property, and a white part has strong transparency, so that the basic function of the backlight keyboard is realized, the keyboard is quite convenient for personnel handling matters at night, the appearance of the keyboard is attractive, however, not every computer user can accept the existence of the backlight keyboard, and in strict sense, the light emitted by the backlight keyboard belongs to one type of light pollution, and the backlight of the keyboard plays a role of dispersing attention when the user works, so that the execution efficiency of the user is reduced; the excessive backlight of the keyboard can stimulate the eyeballs of a user to cause the reduction of visual acuity, the eyesight of the user can be influenced for a long time, the light-emitting diode is directly embedded into the clamping groove of the keyboard, the service life of the light-emitting diode can be influenced to a certain extent when the key of the keyboard is knocked for a long time, if the light-emitting diode is damaged, the light-emitting diode is difficult to replace, the assembling process is complex, and the cost is high.

Disclosure of Invention

The present invention is directed to a keyboard optical module, which solves the above problems in the related art.

In order to achieve the purpose, the invention provides the following technical scheme: a keyboard optical module comprises a module frame, wherein an inner cavity of the module frame is provided with a component groove, the middle part of the bottom of the inner cavity of the component groove is provided with a reflector plate mounting groove, four corners of the bottom of the component groove are fixedly connected with a fixing support, the inner cavity of the fixing support is provided with a clamping groove, the middle part of a frame of the module frame is provided with a fixing square groove, the bottom of the module frame is fixedly connected with a bottom plate, the middle part of the top of the bottom plate is fixedly connected with a reflector plate, four corners of the bottom plate are provided with screw holes, the inner cavity of the screw holes is in threaded connection with screws, the top of the fixing support is fixedly connected with a rubber frame, the light guide plate mounting groove has been seted up at the middle part of rubber frame, the inner chamber of light guide plate mounting groove is provided with the light guide plate, the top that light guide plate mounting groove inner wall is located the light guide plate is provided with fixed establishment, the bottom of rubber frame is provided with the fixture block, the top of rubber frame is provided with black and white glue, the top of black and white glue bonds and has first diffusion piece, the membrane of adding lustre to under the top fixedly connected with of first diffusion piece, the top of membrane of adding lustre to down is provided with the membrane of adding lustre to, the top of going up the membrane of adding lustre to is provided with the second diffusion piece, the top of second diffusion piece is provided with the light screen, the light trap has been seted up at the middle part of light screen

Preferably, the fixing mechanism comprises a fixing block, a groove is formed in the middle of the fixing block, a supporting rod is fixedly connected to the left bottom of the fixing block, a spring is sleeved on the outer ring of the supporting rod, a pressing rod is arranged below the supporting rod, a clamping block is fixedly connected to the right side of the pressing rod, and a pressing block is fixedly connected to one end of the outer side of the pressing rod.

Preferably, the light guide plate, the first diffusion sheet, the lower brightness enhancement film, the upper brightness enhancement film, the second diffusion sheet and the light shielding plate are bonded by black and white glue, and the middle parts of the four sides of the light guide plate, the first diffusion sheet, the lower brightness enhancement film, the upper brightness enhancement film, the second diffusion sheet and the light shielding plate are fixedly connected with a bump.

Preferably, the light guide plate is made of an optical-grade acrylic plate, a high-tech material with extremely high reflectivity and no light absorption, and the light guide points are printed on the ground of the optical-grade acrylic plate by using a UV screen printing technology.

Preferably, the first diffusion sheet and the second diffusion sheet are generally configured from bottom to top as an antistatic coating layer, a PET substrate, and a diffusion layer.

Preferably, the first diffusion sheet and the second diffusion sheet are made of a material with high light transmittance, such as PET/PC/PMMA, and the micro-particles of the conventional diffusion plate are dispersed between the tree finger layers, so that light rays continuously pass through two media with different refractive indexes when passing through the diffusion layer, and at the same time, the light rays are subjected to a plurality of refraction, reflection and scattering phenomena, thereby achieving the optical diffusion effect.

Preferably, the lower and upper brightness enhancement films are optical films having a uniform prism pattern formed on a PET surface with excellent transparency by precision molding using an acrylic resin.

Preferably, it is as described. Compared with the prior art, the invention has the beneficial effects that:

1. this keyboard optical module, the light guide plate is the acrylic plate that utilizes optics level, a high-tech material that has high reflectivity and does not absorb light, light guide point is printed on with UV screen printing technique on acrylic plate ground at optics level, utilize the light that optics level acrylic plate absorption sent from the lamp to stop on optics level acrylic plate surface, when light struck to each light guide point, the reverberation can toward each angle diffusion, then destroy the reflection condition and openly jet out by the light guide plate, through various density, light guide point that the size is different can make the light guide plate evenly luminous, the reflector plate then can return the light reflection that the bottom exposes to the light guide plate in, can improve the availability factor of light.

2. The keyboard light module, the first diffusion sheet, the second diffusion sheet base material need to choose the material with high light transmission rate such as PET/PC/PMMA, the general traditional diffusion film is mainly to add a particle of chemical particle in the diffusion film base material, as the scattering particle, and the existing diffusion plate its corpuscle disperses between the tree finger layer, the light will be in two different refractive index medium of refractive index will pass through continuously while passing the diffusion layer, at this moment, the light will take many refraction, reflection and scattering phenomena, so has caused the effect of optical diffusion, the first diffusion sheet is mainly to concentrate the light that is sent out from the light guide plate and project evenly on the prism piece, and the second diffusion sheet is mainly used to atomize the light that the prism piece emits, and weaken the light and transmit evenly, can reduce the stimulation and injury of light to the human eyeball, at the same time the second diffusion sheet can also play a role of protecting the prism piece.

3. This keyboard optical module, the top that light guide plate mounting groove inner wall is located the light guide plate is provided with fixed establishment, fixed establishment includes the fixed block, the middle part of fixed block is seted up flutedly, the left bottom fixedly connected with branch of fixed block, the outer lane cover of branch is equipped with the spring, the below of branch is provided with the depression bar, the right side fixedly connected with joint piece of depression bar, the one end fixedly connected with in the depression bar outside presses the briquetting, press the briquetting through manual pressing, then promote depression bar and joint piece, then press the spring, the inside of card caking meeting joint at the recess, then can change or maintain the light guide plate, press the briquetting once more after the change of accomplishing the light guide plate and then can utilize the spring action of spring to rebound the position of original light guide plate with the depression bar, can play fixed effect to the light guide plate simultaneously.

Drawings

FIG. 1 is a schematic view of a module frame according to the present invention;

FIG. 2 is a schematic view of the structure of the module parts of the present invention;

FIG. 3 is a schematic view of a light source emission process according to the present invention;

FIG. 4 is a schematic view of a light guide plate according to the present invention;

fig. 5 is a schematic structural diagram of the fixing mechanism of the present invention.

In the figure: 1. a module frame; 2. a component slot; 3. a reflector plate mounting groove; 4. fixing a bracket; 5. a card slot; 6. fixing the square groove; 7. a base plate; 8. a reflective sheet; 9. a screw hole; 10. a screw; 11. a rubber frame; 12. a light guide plate mounting groove; 13. a light guide plate; 14. a fixing mechanism; 141. a fixed block; 142. a groove; 143. a strut; 144. a spring; 145. a pressure lever; 146. a clamping block; 147. a pressing block; 15. a clamping block; 16. black and white glue; 17. a first diffusion sheet; 18. a lower brightness enhancement film; 19. an upper brightness enhancement film; 20. a second diffusion sheet; 21. a visor; 22. light transmission grooves and 23 bumps.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a keyboard optical module comprises a module frame 1, a module groove 2 is arranged in the inner cavity of the module frame 1, a reflector plate mounting groove 3 is arranged in the middle of the bottom of the inner cavity of the module groove 2, a fixing support 4 is fixedly connected to four corners of the bottom of the module groove 2, a clamping groove 5 is arranged in the inner cavity of the fixing support 4, a fixing square groove 6 is arranged in the middle of the frame of the module frame 1, a bottom plate 7 is fixedly connected to the bottom of the module frame 1, a reflector plate 8 is fixedly connected to the middle of the top of the bottom plate 7, screw holes 9 are formed in four corners of the bottom plate 7, screws 10 are in threaded connection with the inner cavity of the screw holes 9, a rubber frame 11 is fixedly connected to the top of the fixing support 4, a light guide plate mounting groove 12 is formed in the middle of the rubber frame 11, a light guide plate 13 is arranged in the inner cavity of the light guide plate mounting groove 12, the light guide plate 13 is an optical-grade acrylic plate, and is a high-tech material with high reflectivity and no light absorption, printing light guide points on the ground of an optical-grade acrylic plate by using a UV screen printing technology, absorbing light emitted from a lamp by using the optical-grade acrylic plate to stay on the surface of the optical-grade acrylic plate, when light rays irradiate each light guide point, reflecting light can be diffused towards each angle, then reflecting conditions are destroyed to be emitted from the front surface of a light guide plate 13, the light guide plate 13 can uniformly emit light through various light guide points with different densities and sizes, a reflecting sheet 8 can reflect the light exposed from the bottom back into the light guide plate 13, the using efficiency of the light can be improved, a fixing mechanism 14 is arranged on the inner wall of a light guide plate mounting groove 12 and above the light guide plate 13, a clamping block 15 is arranged at the bottom of a rubber frame 11, black and white glue 16 is arranged at the top of the rubber frame 11, a first diffusion sheet 17 is bonded at the top of the black and white glue 16, a lower intensifying film 18 is fixedly connected at the top of the first diffusion sheet 17, an upper brightness enhancement film 19 is arranged on the top of the lower brightness enhancement film 18, a second diffusion sheet 20 is arranged on the top of the upper brightness enhancement film 19, a light shielding plate 21 is arranged on the top of the second diffusion sheet 20, a light transmission groove 22 is formed in the middle of the light shielding plate 21, the fixing mechanism 14 comprises a fixing block 141, a groove 142 is formed in the middle of the fixing block 141, a supporting rod 143 is fixedly connected to the bottom of the left side of the fixing block 141, a spring 144 is sleeved on the outer ring of the supporting rod 143, a pressing rod 145 is arranged below the supporting rod 143, a clamping block 146 is fixedly connected to the right side of the pressing rod 145, a pressing block 147 is fixedly connected to one end of the outer side of the pressing rod 145, the pressing block 147 is pressed manually, the pressing rod 145 and the clamping block 146 are pushed, the spring 144 is pressed, the clamping block 146 can be clamped inside the groove 142, the light guide plate 13 can be replaced or maintained, the pressing block 147 can rebound the pressing rod 145 to the original position by the elastic action of the spring 144 after the light guide plate 13 is replaced, meanwhile, the light guide plate 13 can be fixed, the light guide plate 13, the first diffusion sheet 17, the lower diffusion sheet 18, the upper diffusion sheet 19, the second diffusion sheet 20 and the light shielding plate 21 are bonded by black and white glue 16, the middle parts of four sides of the light guide plate and the light shielding plate are fixedly connected with a bump 23, the first diffusion sheet 17 and the second diffusion sheet 20 are generally an antistatic coating layer, a PET base material and a diffusion layer from bottom to top, the first diffusion sheet 17 and the second diffusion sheet 20 base material need to select a material with high light transmittance such as PET/PC/PMMA, the micro-particles of the existing diffusion plate are dispersed among tree finger layers, light rays continuously pass through two media with different refractive indexes when passing through the diffusion layer, and meanwhile, the light rays can generate a plurality of refraction, reflection and scattering phenomena, the first diffusion sheet 17 concentrates the light emitted from the light guide plate 13 to be uniformly projected onto the prism sheet, and the second diffusion sheet 20 mainly functions to atomize the light emitted from the prism sheet and uniformly diffuse the weakened light, so that the irritation and damage of the light to the eyeballs can be reduced, meanwhile, the second diffusion sheet also can play a role in protecting the prism sheet, and the lower light-adding film 18 and the upper light-adding film 19 are formed on the surface of the PET with very good transparency by using acrylic resin, so that an optical film with a uniform prism pattern is precisely formed.

The working principle is as follows: when the keyboard optical module is used, firstly, a module groove 2 is arranged in the inner cavity of a module frame 1, a middle reflector plate mounting groove 3 is arranged at the bottom of the inner cavity of the module groove 2, a fixed support 4 is fixedly connected at the four corners of the bottom of the module groove 2, a clamping groove 5 is arranged in the inner cavity of the fixed support 4, a fixed square groove 6 is arranged in the middle of the frame of the module frame 1, a bottom plate 7 is fixedly connected at the bottom of the module frame 1, a reflector plate 8 is fixedly connected at the middle of the top of a supervision 7, screw holes are arranged at the four corners of the bottom plate 7, a floor 7 is fixed at the bottom of the module frame 1 by screws 10, the reflector plate 8 is just positioned in the inner cavity of the reflector plate mounting groove 3, a light guide plate 13 is arranged in the inner cavity of the light guide plate mounting groove 12, the light guide plate 13 is made of an optical-grade acrylic plate, a high-tech material with extremely high reflectivity and non-light absorption, light guide points are printed on the ground of the optical-grade acrylic plate by using a UV screen printing technology, the light emitted from the lamp is absorbed by the optical-grade acrylic plate and stays on the surface of the optical-grade acrylic plate, when the light irradiates each light guide point, the reflected light can be diffused towards each angle, then the reflected light is destroyed and is emitted from the front surface of the light guide plate 13, the light guide plate 13 can uniformly emit light through various light guide points with different densities and sizes, the light exposed at the bottom can be reflected back to the light guide plate 13 by the reflector plate 8, the use efficiency of the light can be improved, the fixing mechanism 14 is arranged on the inner wall of the light guide plate installation groove 12 and positioned above the light guide plate 13, the fixing mechanism 14 comprises a fixing block 141, a groove 142 is arranged in the middle of the fixing block 141, a supporting rod 143 is fixedly connected to the bottom of the left side of the fixing block 141, a spring 144 is sleeved on the outer ring of the supporting rod 143, a pressing rod 145 is arranged below the supporting rod 134, and a clamping block 146 is fixedly connected to the right side of the pressing rod 145, one end outside the pressure lever 145 is fixedly connected with a pressing block 147, the pressing block 147 is pressed manually, then the pressure lever 145 and the clamping block 146 are pushed, then the spring 144 is pressed, the clamping block 146 is clamped inside the groove 142, then the light guide plate 13 can be replaced or maintained, after the light guide plate 13 is replaced, the pressing block 147 is pressed again, the pressure lever 145 can be rebounded to the original position by utilizing the elastic force of the spring 144, meanwhile, the light guide plate 13 can be fixed, the top of the rubber frame 11 is provided with the black and white glue 16, the top of the black and white glue 16 is bonded with the first diffusion sheet 17, the top of the first diffusion sheet 17 is fixedly connected with the lower light-adding film 18, the top of the lower light-adding film 18 is provided with the upper light-adding film 19, the top of the upper light-adding film 19 is provided with the second diffusion sheet 20, the first diffusion sheet 17 and the second diffusion sheet 20 are made of materials with high light transmittance such as PET/PC/PMMA, generally, a conventional diffusion film is mainly formed by adding a particle of chemical particles as scattering particles into a diffusion film substrate, and the existing diffusion plate has fine particles dispersed between tree finger layers, and light rays continuously pass through two media with different refractive indexes when passing through the diffusion layer, and at the same time, a plurality of refraction, reflection and scattering phenomena occur to the light rays, so that the optical diffusion effect is caused, the first diffusion sheet 17 mainly concentrates and uniformly projects light emitted from a light guide plate 13 onto a prism sheet, the second diffusion sheet 20 mainly functions to atomize light emitted from the prism sheet and uniformly transmits the light weakened, so that stimulation and damage of light to eyeballs can be reduced, and the second diffusion sheet also functions to protect the prism sheet, and the top of the second diffusion sheet 20 is provided with a light shielding plate 21, the middle part of the shading plate 21 is provided with a light-transmitting groove 22, the light guide plate 13, the first diffusion sheet 17, the lower brightness enhancement film 18, the upper brightness enhancement film 19, the second diffusion sheet 20 and the shading plate 21 are bonded by black and white glue 16, and a shock absorption gasket is arranged between each two layers, so that the influence from knocking a keyboard to parts of the backlight module can be reduced,

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A keyboard optical module, includes module frame (1), its characterized in that: the light guide plate packaging structure is characterized in that an inner cavity of the module frame (1) is provided with a component groove (2), the middle part of the bottom of the inner cavity of the component groove (2) is provided with a reflector plate mounting groove (3), four corners of the bottom of the component groove (2) are fixedly connected with fixed supports (4), the inner cavity of each fixed support (4) is provided with a clamping groove (5), the middle part of a frame of the module frame (1) is provided with a fixed square groove (6), the bottom of the module frame (1) is fixedly connected with a bottom plate (7), the middle part of the top of the bottom plate (7) is fixedly connected with a reflector plate (8), four corners of the bottom plate (7) are provided with screw holes (9), the inner cavity of each screw hole (9) is in threaded connection with a screw (10), the top of each fixed support (4) is fixedly connected with a rubber frame (11), the middle part of each rubber frame (11) is provided with a light guide plate mounting groove (12), the inner cavity of each light guide plate mounting groove (12) is provided with a light guide plate (13), the inner wall of each light guide plate mounting groove (12) is provided with a fixing mechanism (14) above the light guide plate (13), the bottom of the rubber frame (11) is provided with a clamping block (15), the bottom of the rubber frame (11), the rubber frame (16) is provided with a white glue diffusion sheet (16), and a black glue diffusion sheet (17), the light-diffusing film comprises a first diffusing sheet (17), a light-diffusing film (18) and a second diffusing sheet (20), wherein the top of the first diffusing sheet (17) is fixedly connected with the lower light-diffusing film (18), the top of the lower light-diffusing film (18) is provided with the upper light-diffusing film (19), the top of the upper light-diffusing film (19) is provided with the second diffusing sheet (20), the top of the second diffusing sheet (20) is provided with a light shielding plate (21), and the middle of the light shielding plate (21) is provided with a light-transmitting groove (22).

2. The keyboard light module of claim 1, wherein: fixed establishment (14) include fixed block (141), recess (142) are seted up in the middle part of fixed block (141), the left bottom fixedly connected with branch (143) of fixed block (141), the outer lane cover of branch (143) is equipped with spring (144), the below of branch (143) is provided with depression bar (145), the right side fixedly connected with joint piece (146) of depression bar (145), the one end fixedly connected with in the depression bar (145) outside presses piece (147).

3. The keyboard light module of claim 1, wherein: the light guide plate (13), the first diffusion sheet (17), the lower brightness enhancement film (18), the upper brightness enhancement film (19), the second diffusion sheet (20) and the light shielding plate (21) are bonded through black and white glue (16), and the middle parts of the four sides of the light guide plate, the first diffusion sheet (17), the lower brightness enhancement film (18), the upper brightness enhancement film, the second diffusion sheet (20) and the light shielding plate (21) are fixedly connected with bumps (23).

4. The keyboard light module of claim 1, wherein: the light guide plate (13) is formed by printing light guide points on the bottom surface of an optical acrylic plate by using a UV screen printing technology.

5. The keyboard light module of claim 1, wherein: the first diffusion sheet (17) and the second diffusion sheet (20) are structurally provided with an antistatic coating layer, a PET base material and a diffusion layer from bottom to top.

6. The keyboard light module of claim 1, wherein: the base materials of the first diffusion sheet (17) and the second diffusion sheet (20) need to be made of PET, PC or PMMA.

7. The keyboard light module of claim 1, wherein: the lower brightness enhancement film (18) and the upper brightness enhancement film (19) are optical films formed by precisely forming a layer of uniform prism patterns on the surface of PET by using acrylic resin.