CN114879405A - Mini-LED backlight source capable of improving light transmittance - Google Patents
Mini-LED backlight source capable of improving light transmittance Download PDFInfo
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- CN114879405A CN114879405A CN202210333573.0A CN202210333573A CN114879405A CN 114879405 A CN114879405 A CN 114879405A CN 202210333573 A CN202210333573 A CN 202210333573A CN 114879405 A CN114879405 A CN 114879405A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133612—Electrical details
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a mini-LED backlight source capable of improving light transmittance, and relates to the technical field of backlight sources. The mini-LED backlight source capable of improving the light transmittance comprises a mounting plate, wherein a light-transmitting shell is arranged on the mounting plate, a reflective film is fixedly connected to one side, opposite to the light-transmitting shell, of the mounting plate, a PCB is arranged on one side, opposite to the light-transmitting shell, of the mounting plate, and a bearing plate is arranged on the PCB. This mini-LED backlight of improvement light transmittance is through the fixed slot for closing up the column structure and restrict the stopper, make it can not break away from the fixed slot is inside under the condition that does not receive external force to influence, consequently accomplish change and installation to LED lamp pearl, and then improve LED lamp pearl's change efficiency, do not use the welded mode to be connected it with the PCB board at western medicine simultaneously, consequently can reduce to leak to weld or the wrong phenomenon of welding, make LED lamp pearl to change alone simultaneously, consequently reduce the wasting of resources that whole change leads to.
Description
Technical Field
The invention relates to the technical field of backlight sources, in particular to a mini-LED backlight source capable of improving light transmittance.
Background
The backlight source is a light source located at the back of the liquid crystal display, and the light emitting effect of the backlight source directly affects the visual effect of the liquid crystal display module. The liquid crystal display itself does not emit light and its display pattern is the result of its modulation of light. The choice of light source used is important in the design of the backlight. The light source used determines the photoelectric parameters of the backlight, such as power consumption, brightness, color, etc., and also determines the characteristics of the backlight, such as its operating conditions and service life.
Known through the relevant literature of inquiry, most existing backlight is structure as an organic whole, its many LED lamp pearls set up the inside at the casing through the mode of welding or point gluey, consequently when single LED lamp pearl or a plurality of LED lamp pearl produced the damage, because the mode through welding and point gluey is connected basically with being shaded, consequently, be difficult to dismantle alone the change to the LED lamp pearl that damages, consequently need change its whole, the cost expenditure has not only been increased in the whole change, LED lamp pearl that does not damage simultaneously is together abandoned, cause very big wasting of resources.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, provides a mini-LED backlight source capable of improving light transmittance, and can solve the problem that a damaged LED lamp bead is difficult to be detached and replaced independently.
In order to achieve the purpose, the invention provides the following technical scheme: the mini-LED backlight source capable of improving the light transmittance comprises a mounting plate, wherein a light-transmitting shell is arranged on the mounting plate, a reflective film is fixedly connected to one side, opposite to the light-transmitting shell, of the mounting plate, a PCB is arranged on one side, opposite to the light-transmitting shell, of the mounting plate, a bearing plate is arranged on the PCB, an LED lamp bead is arranged on the bearing plate, and a quick replacement mechanism is arranged on the bearing plate.
Preferably, the shell of penetrating is become by lower membrane of adding lustre to, last membrane of adding lustre to, first structural film and second structural film, and lower membrane of adding lustre to, last membrane of adding lustre to, first structural film and second structural film bond in proper order, fixedly connected with shading glue on the inner wall all around of the shell of penetrating is provided with the arc depressed part on the shell of penetrating and the relative one side of mounting panel.
Preferably, set up the draw-in groove into returning the font on the relative one side of mounting panel and light-transmitting shell, fixedly connected with is sealed to fill up on the relative one side of mounting panel and light-transmitting shell, and sealed inside being cellular, fixedly connected with and the cardboard of the mutual adaptation of draw-in groove on the relative one side of light-transmitting shell and mounting panel have seted up the fixed orifices on the cardboard.
Preferably, an internal hole is formed in the inner wall of the clamping groove, a spring is fixedly connected inside the internal hole, a fixing rod which is in sliding connection with the internal hole is fixedly connected to one end, which is not in contact with the internal hole, of the spring, an arc-shaped end, which is not in contact with the spring, of the fixing rod, and the fixing rod and the fixing hole are matched with each other.
Preferably, quick replacement mechanism is including setting up two stoppers at the loading board lower surface, and the shifting chute has been seted up to the lower surface of loading board, and two stopper sliding connection are in the inside of shifting chute, and one side fixedly connected with reset spring that two stoppers are relative, and the stopper is the T font with the vertical cross-section in shifting chute, and one side that two stoppers back on the back mutually is splayed and the lower extreme is the arc.
Preferably, the PCB board is provided with a fixed groove in a closed shape, the limiting block is movably connected in the fixed groove, the PCB board is provided with a conductive hole, the conductive hole is electrically connected with a conductive chip electrically connected with the PCB board, the LED lamp bead is provided with a pin, and the pin extends to the lower surface of the bearing plate and is movably connected in the conductive hole.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the LED lamp beads need to be replaced, the bearing plate is pulled upwards, the bearing plate is stressed to enable the two limit blocks to move relatively, so that the limit blocks are separated from the inside of the fixing groove, the pins are separated from the inside of the conductive holes, the bearing plate needing to be replaced is selected, the pins are movably connected with the conductive holes, the bearing plate is pressed downwards, the limit blocks are contacted with the fixing groove due to the stress of the bearing plate, the two limit blocks move relatively due to the stress of the two limit blocks, the limit blocks are clamped into the inside of the fixing groove, the thrust is released by the reset spring, one side, opposite to each other, of the two limit blocks is attached to the inner wall of the fixing groove, the limit blocks are limited through the fixing groove in a closing-up structure, the limit blocks cannot be separated from the inside of the fixing groove under the condition of not being influenced by external force, and therefore replacement and installation of the LED lamp beads are completed, and then improve LED lamp pearl change efficiency, do not use the welded mode to be connected it and PCB board at the western medicine simultaneously, consequently can reduce and leak and weld or the wrong phenomenon of welding, make LED lamp pearl to change alone simultaneously, consequently reduce the wasting of resources that whole change leads to.
(2) The mini-LED backlight source capable of improving the light transmittance enables the pins to be connected with the power supply of the PCB more closely through the conductive chips arranged, and the phenomenon of poor contact is avoided, so that normal illumination of the LED lamp beads is ensured.
(3) The mini-LED backlight source for improving the light transmittance is matched with the fixing holes through the arranged fixing rods, when the transparent shell and the mounting plate need to be connected, the clamping plate only needs to be inserted into the clamping groove, at the moment, the fixed rod is inserted into the inner part of the built-in hole and extrudes the spring under the intervention of the clamping plate, the spring is contracted, when the fixing hole moves to the position of the fixing rod, the fixing rod enables the external pressure of the fixing rod, the spring releases the thrust to enable the fixing rod to be clamped in the fixing hole, so that the connection between the light-transmitting shell and the mounting plate is completed, thereby ensuring that the light-transmitting shell and the mounting plate are more convenient and quicker to disassemble and assemble without using external bolts to fix the light-transmitting shell and the mounting plate, therefore, the subsequent maintenance and replacement efficiency of the backlight source is improved, and unnecessary operation steps are reduced, so that the labor intensity of operators is reduced.
(4) The mini-LED backlight source capable of improving the light transmittance is cellular through the inside of the arranged sealing gasket, and after the light-transmitting shell is completely butted with the mounting plate, the sealing gasket seals a gap between the light-transmitting shell and the mounting plate through the self flexibility, so that the sealing effect of the backlight source is improved, external moisture and dust are prevented from entering the inside of the light-transmitting shell and being damaged, and the service life of the backlight source is prolonged.
(5) The mini-LED backlight source capable of improving the light transmittance improves the refractive index of the LED lamp beads through the arranged light reflecting film, so that light rays are gathered, the light transmittance and the brightness are improved, the light leakage phenomenon is avoided, and the lighting effect of the LED lamp beads is ensured.
(6) This mini-LED backlight source of improvement light transmittance is become through the printing opacity shell that sets up by lower membrane, last membrane, first structural film and the second structural film that adds lustre to, consequently make the printing opacity shell possess good luminousness, go up the setting of the first structural film of membrane and the second structural film that adds lustre to simultaneously, can effectual improvement light's penetration rate, make light gather more simultaneously, consequently improve the luminance that light shines.
(7) The mini-LED backlight source capable of improving the light transmittance is characterized in that the light-shading glue arranged on the periphery of the light-transmitting shell is used, so that light cannot leak from the periphery of the light-transmitting shell, the lighting effect is further ensured, and the arc-shaped concave part is arranged, so that the light can be gathered towards the central part of the light-transmitting shell according to the arc-shaped surface of the light when irradiating out, and the overall brightness is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of a mini-LED backlight source with improved light transmittance according to the present invention;
FIG. 2 is a schematic view of an LED lamp bead of the present invention;
FIG. 3 is a plan view of a light-transmissive envelope of the present invention;
FIG. 4 is a front view of the light transmissive envelope of the present invention;
FIG. 5 is an exploded view of the light-transmitting housing and mounting plate of the present invention;
FIG. 6 is a top view of the mounting plate of the present invention;
FIG. 7 is a front view of the carrier and PCB of the present invention.
Reference numerals: 1. mounting a plate; 101. a light-reflecting film; 102. a gasket; 103. a card slot; 104. a built-in hole; 105. a spring; 106. fixing the rod; 2. a light-transmitting shell; 201. clamping a plate; 202. a fixing hole; 203. shading glue; 204. an arc-shaped recess; 205. a lower brightness enhancement film; 206. an upper brightness enhancement film; 207. a first structural film; 208. a second structural film; 3. a PCB board; 301. a conductive via; 302. a conductive chip; 303. fixing grooves; 4. a carrier plate; 401. a limiting block; 402. a return spring; 403. a moving groove; 5. LED lamp beads; 501. and (7) a pin.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The first embodiment is as follows:
referring to fig. 1-2, the present invention provides a technical solution: the mini-LED backlight source capable of improving the light transmittance comprises a mounting plate 1, wherein a light-transmitting shell 2 is arranged on the mounting plate 1, a reflective film 101 is fixedly connected to one side, opposite to the light-transmitting shell 2, of the mounting plate 1, a PCB 3 is arranged on one side, opposite to the light-transmitting shell 2, of the mounting plate 1, a bearing plate 4 is arranged on the PCB 3, an LED lamp bead 5 is arranged on the bearing plate 4, and a quick replacement mechanism is arranged on the bearing plate 4.
Through the model reflective membrane 101 that sets up, consequently improve LED lamp pearl 5's refracting index, and then the light that makes gathers more, consequently improves luminousness and luminance, avoids appearing the light leak phenomenon simultaneously, consequently ensures LED lamp pearl 5's illuminating effect.
Referring to fig. 3-4, the light-transmitting housing 2 is composed of a lower brightness enhancement film 205, an upper brightness enhancement film 206, a first structural film 207 and a second structural film 208, and the lower brightness enhancement film 205, the upper brightness enhancement film 206, the first structural film 207 and the second structural film 208 are sequentially bonded.
Further, the inner wall around the light-transmitting shell 2 is fixedly connected with a light-shielding glue 203, and one side of the light-transmitting shell 2 opposite to the mounting plate 1 is provided with an arc-shaped concave part 204.
Through the transparent shell 2 that sets up by add lustre to membrane 205 down, go up add lustre to membrane 206, first structural film 207 and second structural film 208 and constitute, consequently make transparent shell 2 possess good luminousness, go up the setting of adding lustre to the first structural film 207 of membrane 206 and second structural film 208 simultaneously, the penetrability that can effectual improvement light makes light gather more simultaneously, consequently improves the luminance of light irradiation.
And glue 203 through the shading that sets up around printing opacity shell 2, consequently make light can not follow printing opacity shell 2 and produce all around and reveal, and then ensure illuminating effect to and the setting of arc depressed part 204, make light when shining out, can concentrate to the central point of printing opacity shell 2 according to its arcwall face, consequently improve whole luminance.
Referring to fig. 5-6, a clip groove 103 is formed on a side of the mounting plate 1 opposite to the light-transmitting casing 2, a sealing gasket 102 is fixedly connected to a side of the mounting plate 1 opposite to the light-transmitting casing 2, the sealing gasket 102 is honeycomb-shaped, a clip plate 201 mutually matched with the clip groove 103 is fixedly connected to a side of the light-transmitting casing 2 opposite to the mounting plate 1, and a fixing hole 202 is formed in the clip plate 201.
Further, an inner hole 104 is formed in the inner wall of the clamping groove 103, a spring 105 is fixedly connected to the inner portion of the inner hole 104, a fixing rod 106 which is slidably connected with the inner hole 104 is fixedly connected to one end, which is not in contact with the inner hole 104, of the spring 105, an arc-shaped end, which is not in contact with the spring 105, of the fixing rod 106, and the fixing rod 106 and the fixing hole 202 are matched with each other.
By arranging the fixing rods 106 to be matched with the fixing holes 202, when the light-transmitting shell 2 needs to be connected with the mounting plate 1, only the card board 201 is inserted into the card slot 103, and the fixing rod 106 is inserted into the built-in hole 104 and presses the spring 105, so that the spring 105 contracts, when the fixing holes 202 are moved to the position where the fixing rods 106 are located, the fixing rods 106 make their external pressure, the springs 105 release the pushing force to make the fixing rods 106 snap into the fixing holes 202, thereby completing the connection between the light-transmitting case 2 and the mounting plate 1, so that the light-transmitting shell 2 and the mounting plate 1 can be more conveniently and rapidly disassembled and mounted without using external bolts for fixing, therefore, the subsequent maintenance and replacement efficiency of the backlight source is improved, and unnecessary operation steps are reduced, so that the labor intensity of operators is reduced.
Simultaneously, the sealing gasket 102 is cellular, after the light-transmitting shell 2 is butted with the mounting plate 1, the sealing gasket 102 seals a gap between the light-transmitting shell 2 and the mounting plate 1 through the flexibility of the sealing gasket, so that the sealing effect of the backlight source is improved, and further, the phenomenon that external moisture and dust enter the inside of the sealing gasket to damage the sealing gasket is avoided, and the service life of the backlight source is prolonged.
Example two;
referring to fig. 7, on the basis of the first embodiment, the quick replacement mechanism includes two limiting blocks 401 disposed on the lower surface of the bearing plate 4, a moving groove 403 is disposed on the lower surface of the bearing plate 4, the two limiting blocks 401 are slidably connected inside the moving groove 403, and a return spring 402 is fixedly connected to one side of the two limiting blocks 401 opposite to each other.
The vertical cross-section of stopper 401 and removal groove 403 is the T font, and two stopper 401 one sides that carry on the back mutually are the splayed and the lower extreme is the arc.
Offer on the PCB board 3 and have the fixed slot 303 for the form of closing up, stopper 401 swing joint has seted up electrically conductive hole 301 in the inside of fixed slot 303 on the PCB board 3, and electrically conductive hole 301's inside fixedly connected with is connected with the electrically conductive chip 302 of PCB board 3 electricity, is provided with pin 501 on LED lamp pearl 5, and pin 501 extends to the lower surface of loading board 4 and swing joint is in the inside of electrically conductive hole 301.
Through the arranged limiting blocks 401, when the LED lamp beads 5 need to be replaced, the bearing plate 4 is pulled upwards, the bearing plate 4 is stressed to enable the two limiting blocks 401 to move relatively, so that the limiting blocks 401 are separated from the inside of the fixing grooves 303, the pins 501 are separated from the inside of the conductive holes 301, therefore, the bearing plate 4 required to be replaced is selected, the pins 501 are movably connected with the conductive holes 301, the bearing plate 4 is pressed downwards, the bearing plate 4 is stressed to enable the limiting blocks 401 to be in contact with the fixing grooves 303, so that the two limiting blocks 401 are stressed to move relatively, the limiting blocks 401 are clamped into the inside of the fixing grooves 303, the reset spring 402 releases thrust, one sides of the two limiting blocks 401 opposite to each other are attached to the inner walls of the fixing grooves 303, the limiting blocks 401 are limited through the closing-shaped structures of the fixing grooves 303, and the limiting blocks 401 cannot be separated from the inside of the fixing grooves 303 under the condition that the LED lamp beads are not affected by external force, therefore, the replacement and installation of the LED lamp beads 5 are completed, the replacement efficiency of the LED lamp beads 5 is further improved, and the Western medicine is not connected with the PCB 3 in a welding mode, so that the phenomenon of missing welding or wrong welding can be reduced, the LED lamp beads 5 can be replaced independently, and the resource waste caused by the whole replacement is reduced.
Through the electrically conductive chip 302 who sets up, and then make to be connected more closely between pin 501 can and the power of PCB board 3, avoid appearing contact failure's phenomenon, consequently ensure the normal lighting of LED lamp pearl 5.
The working principle is as follows: through the arranged limiting blocks 401, when the LED lamp beads 5 need to be replaced, the bearing plate 4 is pulled upwards, the bearing plate 4 is stressed to enable the two limiting blocks 401 to move relatively, so that the limiting blocks 401 are separated from the inside of the fixing grooves 303, the pins 501 are separated from the inside of the conductive holes 301, therefore, the bearing plate 4 required to be replaced is selected, the pins 501 are movably connected with the conductive holes 301, the bearing plate 4 is pressed downwards, the bearing plate 4 is stressed to enable the limiting blocks 401 to be in contact with the fixing grooves 303, so that the two limiting blocks 401 are stressed to move relatively, the limiting blocks 401 are clamped into the inside of the fixing grooves 303, the reset spring 402 releases thrust, one sides of the two limiting blocks 401 opposite to each other are attached to the inner walls of the fixing grooves 303, the limiting blocks 401 are limited through the closing-shaped structures of the fixing grooves 303, and the limiting blocks 401 cannot be separated from the inside of the fixing grooves 303 under the condition that the LED lamp beads are not affected by external force, therefore, the replacement and installation of the LED lamp beads 5 are completed.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. A mini-LED backlight source capable of improving light transmittance comprises a mounting plate (1), and is characterized in that: be provided with printing opacity shell (2) on mounting panel (1), fixedly connected with reflective membrane (101) on one side that mounting panel (1) and printing opacity shell (2) are relative is provided with PCB board (3) on one side that mounting panel (1) and printing opacity shell (2) are relative, is provided with loading board (4) on PCB board (3), is provided with LED lamp pearl (5) on loading board (4), is provided with quick replacement mechanism on loading board (4).
2. The mini-LED backlight source with improved light transmittance as claimed in claim 1, wherein: the light-transmitting shell (2) is composed of a lower brightness enhancement film (205), an upper brightness enhancement film (206), a first structural film (207) and a second structural film (208), and the lower brightness enhancement film (205), the upper brightness enhancement film (206), the first structural film (207) and the second structural film (208) are sequentially bonded.
3. The mini-LED backlight source with improved light transmittance as claimed in claim 2, wherein: the light-transmitting shell is characterized in that the inner wall of the periphery of the light-transmitting shell (2) is fixedly connected with a light-shielding glue (203), and one side, opposite to the mounting plate (1), of the light-transmitting shell (2) is provided with an arc-shaped concave part (204).
4. The mini-LED backlight source with improved light transmittance as claimed in claim 1, wherein: offer draw-in groove (103) to going back the font on the relative one side of mounting panel (1) and printing opacity shell (2), fixedly connected with sealed pad (102) on the relative one side of mounting panel (1) and printing opacity shell (2), sealed pad (102) inside is cellular, cardboard (201) of fixedly connected with and draw-in groove (103) mutual adaptation on the relative one side of printing opacity shell (2) and mounting panel (1), fixed orifices (202) have been seted up on cardboard (201).
5. The mini-LED backlight source with improved light transmittance as claimed in claim 4, wherein: an internal hole (104) is formed in the inner wall of the clamping groove (103), a spring (105) is fixedly connected to the inside of the internal hole (104), and a fixing rod (106) which is connected with the internal hole (104) in a sliding mode is fixedly connected to one end, not in contact with the internal hole (104), of the spring (105).
6. The mini-LED backlight source with improved light transmittance as claimed in claim 5, wherein: the end of the fixing rod (106) which is not contacted with the spring (105) is arc-shaped, and the fixing rod (106) is matched with the fixing hole (202).
7. The mini-LED backlight source with improved light transmittance as claimed in claim 1, wherein: quick replacement mechanism is including setting up two stopper (401) at loading board (4) lower surface, and shifting chute (403) have been seted up to the lower surface of loading board (4), and two stopper (401) sliding connection are in the inside of shifting chute (403), and one side fixedly connected with reset spring (402) that two stopper (401) are relative.
8. The mini-LED backlight source of claim 7, wherein: the vertical cross-section of stopper (401) and removal groove (403) is the T font, and one side that two stoppers (401) carried on the back mutually is the splayed and the lower extreme is the arc.
9. The mini-LED backlight source of claim 7, wherein: offer fixed slot (303) for the form of closing up on PCB board (3), stopper (401) swing joint is in the inside of fixed slot (303), has seted up electrically conductive hole (301) on PCB board (3), and the inside fixedly connected with of electrically conductive hole (301) leads electrically conductive chip (302) with PCB board (3) electricity is connected, is provided with pin (501) on LED lamp pearl (5), and pin (501) extend to the lower surface of loading board (4) and swing joint is in the inside of electrically conductive hole (301).
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| CN202210333573.0A CN114879405B (en) | 2022-03-30 | 2022-03-30 | Mini-LED backlight source capable of improving light transmittance |
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| CN114879405B (en) | 2023-05-16 |
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