CN115240538A - LED backlight source with uniform light distribution for display device - Google Patents
LED backlight source with uniform light distribution for display device Download PDFInfo
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- CN115240538A CN115240538A CN202211012928.2A CN202211012928A CN115240538A CN 115240538 A CN115240538 A CN 115240538A CN 202211012928 A CN202211012928 A CN 202211012928A CN 115240538 A CN115240538 A CN 115240538A
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- side part
- guide plate
- light guide
- wall
- lamp
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses an LED backlight source with uniform light distribution for a display device, belonging to the technical field of LED backlight sources, comprising a light source cover, wherein the light source cover consists of a bottom shell part, a bottom side part, a middle side part and a top side part, the top end of the bottom shell part is fixedly connected with the bottom side part, and the top end of the bottom side part is fixedly connected with the middle side part, the LED backlight source has the advantages that: the light source cover is formed by arranging the bottom shell part, the bottom side part, the middle side part and the top side part, and included angles among the bottom shell part, the bottom side part, the middle side part and the top side part are all set to be 135 degrees, so that the illumination is uniform; the fourth light guide plate, the third light guide plate, the second light guide plate and the first light guide plate are arranged in the fourth illumination assembly, the third illumination assembly, the second illumination assembly and the first illumination assembly respectively, and the light-emitting grooves are formed in the fourth light guide plate, the third light guide plate, the second light guide plate and the first light guide plate, so that light beams are uniformly irradiated, and the reflection amount of the light beams is very small.
Description
Technical Field
The invention relates to the technical field of LED backlight sources, in particular to an LED backlight source with uniform light distribution for a display device.
Background
The LED has the characteristics of low power consumption, low heat productivity, high brightness, long service life and the like, and is expected to completely replace the traditional backlight system in recent years.
The LED backlight source that uses in current display device (for example need use the LED lamp to shine when detecting spare part), has set up a plurality of lamp pearls on its lamp plate, but the lamp pearl all is parallel and set up in a plane, because the overlap interference between each lamp pearl light beam for whole light beam is inhomogeneous, and is poor to the display effect of article.
Disclosure of Invention
The present invention has been made in view of the problems of the conventional LED backlight for a display device having a uniform light distribution.
Therefore, an object of the present invention is to provide an LED backlight source with uniform light distribution for a display device, which solves the problem that the conventional LED backlight source used in the display device (for example, when detecting components, an LED lamp is required to be used for illumination), has a plurality of beads arranged on a lamp panel, but the beads are all parallel and arranged in a plane, and due to the overlapping interference between the light beams of the beads, the overall light beam is not uniform, and the display effect on the articles is poor.
In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:
an LED backlight source with uniform light distribution for a display device comprises a light source cover, wherein the light source cover consists of a bottom shell part, a bottom side part, a middle side part and a top side part, the top end of the bottom shell part is fixedly connected with the bottom side part, the top end of the bottom side part is fixedly connected with the middle side part, the top end of the middle side part is fixedly connected with the top side part, the bottom shell part is in a vertical state, and the bottom side part, the middle side part and the top side part are all in an inclined state, and the inclination is gradually decreased;
the inner wall of the bottom side part is equidistantly and annularly provided with a first illumination assembly, the inner wall of the bottom side part is equidistantly and annularly provided with a second illumination assembly, the inner wall of the middle side part is equidistantly and annularly provided with a third illumination assembly, and the inner wall of the top side part is equidistantly and annularly provided with a fourth illumination assembly;
the inner cavity of the light source cover is composed of a first cavity, a second cavity, a third cavity and a fourth cavity, and the first cavity and the second cavity take the plane of the joint of the bottom shell part and the bottom side part as an interface; the plane where the connecting part of the bottom side surface part and the middle side surface part is located is used as an interface of the second cavity and the third cavity; the third cavity and the fourth cavity take a plane where the connecting part of the middle side part and the top side part is located as an interface; the first illumination assembly is located in the first cavity, the second illumination assembly is located in the second cavity, the third illumination assembly is located in the third cavity, and the fourth illumination assembly is located in the fourth cavity; a first control switch is installed on the outer wall of the bottom part, a second control switch is installed on the outer wall of the bottom side part, a third control switch is installed on the outer wall of the middle side part, and a fourth control switch is installed on the outer wall of the top side part; the included angle between the bottom shell part and the bottom side part is set to be 130-140 degrees, the included angle between the bottom side part and the middle side part is set to be 130-140 degrees, and the included angle between the middle side part and the top side part is set to be 130-140 degrees.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: first illumination subassembly includes first lamp plate, a plurality of lamp pearl is installed to the equidistance on the first lamp plate, first lamp plate one end fixed connection is first to shelter from the rectangle ring, first shelter from the rectangle ring and keep away from the first light guide plate of one end fixed connection of first lamp plate, first shelter from and be provided with first antireflection coating between rectangle ring and the first light guide plate, first spotlight groove has been seted up to the equidistance on the first light guide plate.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the second illumination subassembly includes the second lamp plate, a plurality of lamp pearl is installed to the equidistance on the second lamp plate, second lamp plate one end fixed connection second shelters from the rectangle ring, the second shelters from the rectangle ring and keeps away from the one end fixed connection second light guide plate of second lamp plate, the second shelters from and is provided with the second antireflection coating between rectangle ring and the second light guide plate, second light focusing groove has been seted up to the equidistance on the second light guide plate.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the third illumination subassembly includes the third lamp plate, a plurality of lamp pearl is installed to the equidistance on the third lamp plate, third lamp plate one end fixed connection third shelters from the rectangle ring, the third shelters from the rectangle ring and keeps away from the one end fixed connection third light guide plate of third lamp plate, the third shelters from and is provided with the third antireflection coating between rectangle ring and the second light guide plate, third light focusing groove has been seted up to the equidistance on the third light guide plate.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the fourth illumination subassembly includes the fourth lamp plate, a plurality of lamp pearl is installed to the equidistance on the fourth lamp plate, fourth lamp plate one end fixed connection fourth shelters from the rectangle ring, the fourth shelters from the rectangle ring and keeps away from the one end fixed connection fourth light guide plate of fourth lamp plate, the fourth shelters from and is provided with the fourth antireflection coating between rectangle ring and the second light guide plate, fourth light gathering groove has been seted up to the equidistance on the fourth light guide plate.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the first light guide plate, the first antireflection film, the first shielding rectangular ring and the first lamp panel are arranged on the inner wall of the base shell through bolts; the second light guide plate, the second antireflection film, the second shielding rectangular ring and the second lamp panel are mounted on the inner wall of the bottom side part through bolts; the third light guide plate, the third antireflection film, the third shielding rectangular ring and the third lamp plate are arranged on the inner wall of the middle side face through bolts; and the fourth light guide plate, the fourth antireflection film, the fourth shielding rectangular ring and the fourth lamp panel are arranged on the inner wall of the top side part through bolts.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: first illumination subassembly still includes first electric telescopic handle, first electric telescopic handle one end fixed connection drain pan portion inner wall, first electric telescopic handle one end is rotated through the round pin axle and is connected first fixed block, the first lantern ring of first fixed block one end fixed connection, first lantern ring inner wall cover is equipped with the sealing washer, and the sealing washer endotheca is equipped with first supporting shaft, the first lamp plate of first supporting shaft one end fixed connection.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the second illumination subassembly still includes second electric telescopic handle, second electric telescopic handle one end fixed connection bottom side face inner wall, second electric telescopic handle one end is rotated through the round pin axle and is connected the second fixed block, the second fixed block one end fixed connection second lantern ring, second lantern ring inner wall cover is equipped with the sealing washer, and the sealing washer endotheca is equipped with the second back shaft, second back shaft one end fixed connection second lamp plate.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the third illumination subassembly still includes third electric telescopic handle, side portion inner wall in the third electric telescopic handle one end fixed connection, third electric telescopic handle one end is rotated through the round pin axle and is connected the third fixed block, the third fixed block one end fixed connection third lantern ring, third lantern ring inner wall cover is equipped with the sealing washer, and the sealing washer endotheca is equipped with the third back shaft, third back shaft one end fixed connection third lamp plate.
As a preferable aspect of the LED backlight with uniform light distribution for a display device according to the present invention, wherein: the fourth illumination subassembly still includes fourth electric telescopic handle, the facial inner wall in side is pressed to fourth electric telescopic handle one end fixed connection, fourth electric telescopic handle one end is rotated through the round pin axle and is connected the fourth fixed block, the fourth fixed block one end fixed connection fourth lantern ring, fourth lantern ring inner wall cover is equipped with the sealing washer, and the sealing washer endotheca is equipped with the fourth back shaft, fourth back shaft one end fixed connection fourth lamp plate.
Compared with the prior art:
1. the light source cover is formed by arranging the bottom shell part, the bottom side part, the middle side part and the top side part, and included angles among the bottom shell part, the bottom side part, the middle side part and the top side part are all set to be 135 degrees, so that the illumination is uniform;
2. a fourth light guide plate, a third light guide plate, a second light guide plate and a first light guide plate are respectively arranged in the fourth illumination assembly, the third illumination assembly, the second illumination assembly and the first illumination assembly, and light-emitting grooves are formed in the fourth light guide plate, the third light guide plate, the second light guide plate and the first light guide plate, so that light beams are uniformly irradiated and the reflection amount of the light beams is very small;
3. the angles of the fourth illumination assembly, the third illumination assembly, the second illumination assembly and the first illumination assembly can be adjusted, so that the illumination angle can be adjusted, and the use is more flexible;
4. because fourth illumination subassembly, third illumination subassembly, second illumination subassembly and first illumination subassembly are the ring cloth setting, consequently can not appear the shadow when shining to the display effect to article is better.
Drawings
Fig. 1 is a schematic structural diagram provided in embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 provided in accordance with embodiment 1 of the present invention;
FIG. 3 is an enlarged view of the point A in FIG. 2 according to embodiment 1 of the present invention;
fig. 4 is an enlarged view of B in fig. 2 according to embodiment 1 of the present invention;
FIG. 5 is an enlarged view of the point C in FIG. 2 according to embodiment 1 of the present invention;
FIG. 6 is an enlarged view of D in FIG. 2 according to example 1 of the present invention;
FIG. 7 is a cross-sectional view of FIG. 1 provided in accordance with example 2 of the present invention;
FIG. 8 is an enlarged view at E in FIG. 7, provided in example 2 of the present invention;
FIG. 9 is an enlarged view at F in FIG. 7 provided in example 2 of the present invention;
FIG. 10 is an enlarged view at G in FIG. 7, provided in accordance with embodiment 2 of the present invention;
fig. 11 is an enlarged view at H in fig. 7 provided in embodiment 2 of the present invention.
In the figure: the light source module comprises a light source cover 1, a first cavity 11, a bottom shell 111, a second cavity 12, a bottom side part 112, a third cavity 13, a middle side part 113, a fourth cavity 14, a top side part 114, a first control switch 15, a second control switch 16, a third control switch 17, a fourth control switch 18, a fourth illumination assembly 2, a fourth lamp panel 21, a fourth shielding rectangular ring 22, a fourth antireflection film 23, a fourth light guide plate 24, a fourth light gathering groove 241, a fourth support shaft 25, a fourth collar 26, a fourth fixing block 261, a fourth electric telescopic rod 27, a third illumination assembly 3, a third lamp panel 31, a third shielding rectangular ring 32, a third antireflection film 33, a fourth control switch 18, a fourth illumination assembly 2 the second light guide plate 34, the third light gathering groove 341, the third support shaft 35, the third collar 36, the third fixing block 361, the third electric telescopic rod 37, the second illumination assembly 4, the first lamp plate 41, the second shielding rectangular ring 42, the second antireflection film 43, the second light guide plate 44, the second light gathering groove 441, the second support shaft 45, the second collar 46, the second fixing block 461, the second electric telescopic rod 47, the first illumination assembly 5, the first lamp plate 51, the first shielding rectangular ring 52, the first antireflection film 53, the first light guide plate 54, the first light gathering groove 541, the first support shaft 55, the first collar 56, the first fixing block 561, and the first electric telescopic rod 57.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1:
the invention provides an LED backlight source with uniform light distribution for a display device, please refer to fig. 1-6, which comprises a light source cover 1, wherein a power line is arranged at the top end of the light source cover 1 and can be connected with the power supplies of lamp beads in all a first illumination assembly 5, a second illumination assembly 4, a third illumination assembly 3 and a fourth illumination assembly 2, the light source cover 1 consists of a bottom shell part 111, a bottom side part 112, a middle side part 113 and a top side part 114, the top end of the bottom shell part 111 is fixedly connected with the bottom side part 112, the top end of the bottom side part 112 is fixedly connected with the middle side part 113, the top end of the middle side part 113 is fixedly connected with the top side part 114, the bottom shell part 111 is in a vertical state, and the bottom side part 112, the middle side part 113 and the top side part 114 are in an inclined state, and the inclination degree is gradually decreased;
the first illumination components 5 are distributed equidistantly and annularly on the inner wall of the bottom shell part 111, the second illumination components 4 are distributed equidistantly and annularly on the inner wall of the bottom side part 112, the third illumination components 3 are distributed equidistantly and annularly on the inner wall of the middle side part 113, and the fourth illumination components 2 are distributed equidistantly and annularly on the inner wall of the top side part 114;
the inner cavity of the light source cover 1 is composed of a first cavity 11, a second cavity 12, a third cavity 13 and a fourth cavity 14, and the first cavity 11 and the second cavity 12 use the plane where the connection part of the bottom shell 111 and the bottom side surface 112 is located as an interface; the second cavity 12 and the third cavity 13 have the plane where the connection between the bottom part 112 and the middle part 113 is located as an interface; the third cavity 13 and the fourth cavity 14 use the plane of the connection between the middle side part 113 and the top side part 114 as an interface; the first illumination assembly 5 is positioned in the first cavity 11, the second illumination assembly 4 is positioned in the second cavity 12, the third illumination assembly 3 is positioned in the third cavity 13, and the fourth illumination assembly 2 is positioned in the fourth cavity 14; a first control switch 15 is arranged on the outer wall of the bottom part 111, a second control switch 16 is arranged on the outer wall of the bottom part 112, a third control switch 17 is arranged on the outer wall of the middle part 113, and a fourth control switch 18 is arranged on the outer wall of the top part 114; the angle between the base section 111 and the base side section 112 is set to 130 to 140 degrees, preferably 135 degrees, the angle between the base side section 112 and the middle side section 113 is set to 130 to 140 degrees, preferably 135 degrees, and the angle between the middle side section 113 and the top side section 114 is set to 130 to 140 degrees, preferably 135 degrees.
The first illumination assembly 5 comprises a first lamp panel 51, a plurality of lamp beads are mounted on the first lamp panel 51 at equal distances, one end of the first lamp panel 51 is fixedly connected with a first shielding rectangular ring 52, one end, away from the first lamp panel 51, of the first shielding rectangular ring 52 is fixedly connected with a first light guide plate 54, a first antireflection film 53 is arranged between the first shielding rectangular ring 52 and the first light guide plate 54, and a first light gathering groove 541 is formed in the first light guide plate 54 at equal distances; first light guide plate 54 and first light gathering groove 541 can lead the light that the lamp pearl on first lamp plate 51 was sent effectively for the light beam is more even.
The second illumination assembly 4 comprises a second lamp panel 41, a plurality of lamp beads are mounted on the second lamp panel 41 at equal intervals, one end of the second lamp panel 41 is fixedly connected with a second shielding rectangular ring 42, one end, far away from the second lamp panel 41, of the second shielding rectangular ring 42 is fixedly connected with a second light guide plate 44, a second antireflection film 43 is arranged between the second shielding rectangular ring 42 and the second light guide plate 44, and a second light condensing groove 441 is formed in the second light guide plate 44 at equal intervals; the second light guide plate 44 and the second light condensing groove 441 can effectively guide light emitted by the lamp beads on the second lamp panel 41, so that light beams are more uniform.
The third illumination assembly 3 comprises a third lamp panel 31, a plurality of lamp beads are equidistantly mounted on the third lamp panel 31, one end of the third lamp panel 31 is fixedly connected with a third shielding rectangular ring 32, one end of the third shielding rectangular ring 32, which is far away from the third lamp panel 31, is fixedly connected with a third light guide plate 34, a third antireflection film 33 is arranged between the third shielding rectangular ring 32 and the second light guide plate 34, and a third light focusing groove 341 is equidistantly formed in the third light guide plate 34; third light guide plate 34 and third light focusing groove 341 can lead the light that the lamp pearl on the third lamp plate 31 sent effectively for the light beam is more even.
The fourth illumination assembly 2 comprises a fourth lamp panel 21, a plurality of lamp beads are equidistantly mounted on the fourth lamp panel 21, one end of the fourth lamp panel 21 is fixedly connected with a fourth shielding rectangular ring 22, one end, far away from the fourth lamp panel 21, of the fourth shielding rectangular ring 22 is fixedly connected with a fourth light guide plate 24, a fourth antireflection film 23 is arranged between the fourth shielding rectangular ring 22 and the second light guide plate 24, and a fourth light gathering groove 241 is equidistantly formed in the fourth light guide plate 24; fourth light guide plate 24 and fourth light concentration groove 241 can lead the light that the lamp pearl on the second lamp plate 41 sent effectively for the light beam is more even.
The first light guide plate 54, the first antireflection film 53, the first shielding rectangular ring 52 and the first lamp panel 51 are mounted on the inner wall of the base shell 111 through bolts; the second light guide plate 44, the second antireflection film 43, the second shielding rectangular ring 42 and the second lamp panel 41 are mounted on the inner wall of the bottom side portion 112 through bolts; the third light guide plate 34, the third antireflection film 33, the third shielding rectangular ring 32 and the third lamp panel 31 are mounted on the inner wall of the middle side part 113 through bolts; the fourth light guide plate 24, the fourth antireflection film 23, the fourth shielding rectangular ring 22, and the fourth lamp panel 21 are mounted on the inner wall of the top side portion 114 by bolts.
When the lamp is used specifically, the power supply of the lamp beads in all the first illumination assembly 5, the second illumination assembly 4, the third illumination assembly 3 and the fourth illumination assembly 2 is connected by using a power line (not marked in the figure) on the light source cover 1; turning on the first control switch 15, the second control switch 16, the third control switch 17 and the fourth control switch 18; the lamp beads on the second lamp panel 41 emit light, and the fourth light guide plate 24 and the fourth light collecting grooves 241 can effectively guide the light emitted by the lamp beads on the second lamp panel 41, so that the light beam is more uniform; the lamp beads on the third lamp panel 31 emit light, and the third light guide plate 34 and the third light focusing grooves 341 can effectively guide the light emitted by the lamp beads on the third lamp panel 31, so that the light beam is more uniform; the lamp beads on the second lamp panel 41 emit light, and the second light guide plate 44 and the second light focusing grooves 441 can effectively guide the light emitted by the lamp beads on the second lamp panel 41, so that the light beams are more uniform; the first light guide plate 54 and the first light gathering groove 541 are provided with light emitting beads on the first lamp panel 51, so that light emitted by the beads on the first lamp panel 51 can be effectively guided, and the light beam is more uniform.
Example 2:
referring to fig. 7 to 11, the difference from embodiment 1 is: the first illumination assembly 5 further comprises a first electric telescopic rod 57, one end of the first electric telescopic rod 57 is fixedly connected with the inner wall of the bottom shell part 111, one end of the first electric telescopic rod 57 is rotatably connected with a first fixed block 561 through a pin shaft, one end of the first fixed block 561 is fixedly connected with a first lantern ring 56, a sealing ring is sleeved on the inner wall of the first lantern ring 56, a first supporting shaft 55 is sleeved in the sealing ring, and one end of the first supporting shaft 55 is fixedly connected with the first lamp panel 51; the second illumination assembly 4 further comprises a second electric telescopic rod 47, one end of the second electric telescopic rod 47 is fixedly connected with the inner wall of the bottom part 112, one end of the second electric telescopic rod 47 is rotatably connected with a second fixed block 461 through a pin shaft, one end of the second fixed block 461 is fixedly connected with a second sleeve ring 46, a sealing ring is sleeved on the inner wall of the second sleeve ring 46, a second support shaft 45 is sleeved in the sealing ring, and one end of the second support shaft 45 is fixedly connected with the second lamp panel 41; the third illumination assembly 3 further comprises a third electric telescopic rod 37, one end of the third electric telescopic rod 37 is fixedly connected with the inner wall of the middle side part 113, one end of the third electric telescopic rod 37 is rotatably connected with a third fixed block 361 through a pin shaft, one end of the third fixed block 361 is fixedly connected with a third collar 36, a sealing ring is sleeved on the inner wall of the third collar 36, a third support shaft 35 is sleeved in the sealing ring, and one end of the third support shaft 35 is fixedly connected with the third lamp panel 31; fourth illumination subassembly 2 still includes fourth electric telescopic handle 27, and the side face portion 114 inner wall is pushed up to fourth electric telescopic handle 27 one end fixed connection, and fourth fixed block 261 is connected through the round pin hub rotation to fourth electric telescopic handle 27 one end, and fourth fixed block 261 one end fixed connection fourth lantern ring 26, and the cover of fourth lantern ring 26 inner wall is equipped with the sealing washer, and the sealing washer endotheca is equipped with fourth back shaft 25, fourth back shaft 25 one end fixed connection fourth lamp plate 21.
When the lamp is used specifically, the power supply of the lamp beads in all the first illumination assembly 5, the second illumination assembly 4, the third illumination assembly 3 and the fourth illumination assembly 2 is connected by using a power line (not marked in the figure) on the light source cover 1; turning on the first control switch 15, the second control switch 16, the third control switch 17 and the fourth control switch 18; the lamp beads on the second lamp panel 41 emit light, and the fourth light guide plate 24 and the fourth light gathering grooves 241 can effectively guide the light emitted by the lamp beads on the second lamp panel 41, so that the light beams are more uniform; the lamp beads on the third lamp panel 31 emit light, and the third light guide plate 34 and the third light focusing grooves 341 can effectively guide the light emitted by the lamp beads on the third lamp panel 31, so that the light beam is more uniform; the lamp beads on the second lamp panel 41 emit light, and the second light guide plate 44 and the second light focusing grooves 441 can effectively guide the light emitted by the lamp beads on the second lamp panel 41, so that the light beams are more uniform; the first light guide plate 54 and the first light gathering groove 541, which are emitted by the lamp beads on the first lamp panel 51, can effectively guide the light emitted by the lamp beads on the first lamp panel 51, so that the light beams are more uniform; the directions of the light beams can be changed by rotating the fourth lamp panel 21, the third lamp panel 31, the first lamp panel 41 and the first lamp panel 51 as required; and the angles of the fourth illumination component 2, the third illumination component 3, the second illumination component 4 and the first illumination component 5 can be changed by the extension and retraction of the fourth electric telescopic rod 27, the third electric telescopic rod 37, the second electric telescopic rod 47 and the first electric telescopic rod 57, so that the adjustment of the light beam irradiation direction is realized.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An LED backlight with uniform light distribution for a display device, comprising a light source housing (1), characterized in that: the light source cover (1) is composed of a bottom shell part (111), a bottom side part (112), a middle side part (113) and a top side part (114), the top end of the bottom shell part (111) is fixedly connected with the bottom side part (112), the top end of the bottom side part (112) is fixedly connected with the middle side part (113), the top end of the middle side part (113) is fixedly connected with the top side part (114), the bottom shell part (111) is in a vertical state, and the bottom side part (112), the middle side part (113) and the top side part (114) are all in an inclined state, and the inclination is gradually reduced;
the inner wall of the bottom shell part (111) is provided with first illumination components (5) in an equidistant and annular manner, the inner wall of the bottom side part (112) is provided with second illumination components (4) in an equidistant and annular manner, the inner wall of the middle side part (113) is provided with third illumination components (3) in an equidistant and annular manner, and the inner wall of the top side part (114) is provided with fourth illumination components (2) in an equidistant and annular manner;
the inner cavity of the light source cover (1) is composed of a first cavity (11), a second cavity (12), a third cavity (13) and a fourth cavity (14), and the plane of the connection position of the bottom shell part (111) and the bottom side surface part (112) is used as an interface of the first cavity (11) and the second cavity (12); the second cavity (12) and the third cavity (13) take a plane where the connecting part of the bottom side surface part (112) and the middle side surface part (113) is positioned as an interface; the third cavity (13) and the fourth cavity (14) take a plane where a connecting part of the middle side part (113) and the top side part (114) is located as an interface; the first lighting assembly (5) is located in the first cavity (11), the second lighting assembly (4) is located in the second cavity (12), the third lighting assembly (3) is located in the third cavity (13), and the fourth lighting assembly (2) is located in the fourth cavity (14); a first control switch (15) is mounted on the outer wall of the bottom part (111), a second control switch (16) is mounted on the outer wall of the bottom side part (112), a third control switch (17) is mounted on the outer wall of the middle side part (113), and a fourth control switch (18) is mounted on the outer wall of the top side part (114); the included angle between the bottom shell part (111) and the bottom side part (112) is set to be 130-140 degrees, the included angle between the bottom side part (112) and the middle side part (113) is set to be 130-140 degrees, and the included angle between the middle side part (113) and the top side part (114) is set to be 130-140 degrees.
2. The LED backlight source with uniform light distribution for the display device according to claim 1, wherein the first illumination assembly (5) comprises a first lamp panel (51), a plurality of lamp beads are installed on the first lamp panel (51) at equal distances, a first shielding rectangular ring (52) is fixedly connected to one end of the first lamp panel (51), the first shielding rectangular ring (52) is far away from a first light guide plate (54) fixedly connected to one end of the first lamp panel (51), a first antireflection film (53) is arranged between the first shielding rectangular ring (52) and the first light guide plate (54), and a first light gathering groove (541) is formed in the first light guide plate (54) at equal distances.
3. The LED backlight source with uniform light distribution for the display device according to claim 2, wherein the second illumination assembly (4) comprises a second lamp plate (41), a plurality of lamp beads are equidistantly installed on the second lamp plate (41), one end of the second lamp plate (41) is fixedly connected with a second shielding rectangular ring (42), the second shielding rectangular ring (42) is far away from one end of the second lamp plate (41) and fixedly connected with a second light guide plate (44), a second antireflection film (43) is arranged between the second shielding rectangular ring (42) and the second light guide plate (44), and a second light focusing groove (441) is equidistantly formed in the second light guide plate (44).
4. The LED backlight source with uniform light distribution for the display device according to claim 3, wherein the third illumination assembly (3) comprises a third lamp plate (31), a plurality of lamp beads are equidistantly installed on the third lamp plate (31), a third rectangular ring (32) is shielded by the third lamp plate (31) through one end fixed connection, the third rectangular ring (32) is shielded by the third rectangular ring (32) to be far away from a third light guide plate (34) with one end fixed connection of the third lamp plate (31), a third antireflection film (33) is arranged between the third rectangular ring (32) and the second light guide plate (34), and a third light focusing groove (341) is equidistantly formed in the third light guide plate (34).
5. The LED backlight source with uniform light distribution for the display device according to claim 4, wherein the fourth lighting assembly (2) comprises a fourth lamp panel (21), a plurality of lamp beads are installed on the fourth lamp panel (21) at an equal distance, a rectangular ring (22) is shielded by the fourth lamp panel (21) through one end fixed connection, the rectangular ring (22) is shielded by the fourth shielding, one end fixed connection fourth light guide plate (24) of the fourth lamp panel (21) is kept away from the rectangular ring (22), a fourth antireflection film (23) is arranged between the rectangular ring (22) and the second light guide plate (24) through the fourth shielding, and a fourth light focusing groove (241) is formed in the fourth light guide plate (24) at an equal distance.
6. The LED backlight source with uniform light distribution for the display device according to claim 5, wherein the first light guide plate (54), the first antireflection film (53), the first shielding rectangular ring (52) and the first lamp panel (51) are mounted on the inner wall of the bottom shell (111) together through bolts; the second light guide plate (44), the second antireflection film (43), the second shielding rectangular ring (42) and the second lamp panel (41) are mounted on the inner wall of the bottom side portion (112) through bolts; the third light guide plate (34), the third antireflection film (33), the third shielding rectangular ring (32) and the third lamp panel (31) are mounted on the inner wall of the middle side part (113) through bolts; and the fourth light guide plate (24), the fourth antireflection film (23), the fourth shielding rectangular ring (22) and the fourth lamp panel (21) are mounted on the inner wall of the top side part (114) through bolts.
7. The LED backlight source with uniform light distribution for the display device according to claim 2, wherein the first illumination assembly (5) further comprises a first electric telescopic rod (57), one end of the first electric telescopic rod (57) is fixedly connected with the inner wall of the base portion (111), one end of the first electric telescopic rod (57) is rotatably connected with a first fixing block (561) through a pin shaft, one end of the first fixing block (561) is fixedly connected with a first sleeve ring (56), a sealing ring is sleeved on the inner wall of the first sleeve ring (56), a first supporting shaft (55) is sleeved on the sealing ring, and one end of the first supporting shaft (55) is fixedly connected with the first lamp plate (51).
8. The LED backlight source with uniform light distribution for the display device according to claim 3, wherein the second illumination assembly (4) further comprises a second electric telescopic rod (47), one end of the second electric telescopic rod (47) is fixedly connected with the inner wall of the bottom surface part (112), one end of the second electric telescopic rod (47) is rotatably connected with a second fixed block (461) through a pin shaft, one end of the second fixed block (461) is fixedly connected with a second sleeve ring (46), a sealing ring is sleeved on the inner wall of the second sleeve ring (46), a second supporting shaft (45) is sleeved on the sealing ring, and one end of the second supporting shaft (45) is fixedly connected with a second lamp plate (41).
9. The LED backlight source with uniform light distribution for the display device according to claim 4, wherein the third illumination assembly (3) further comprises a third electric telescopic rod (37), the inner wall of the middle side part (113) of one end of the third electric telescopic rod (37) is connected with a third fixing block (361) through a pin, one end of the third fixing block (361) is fixedly connected with a third ring (36), the inner wall of the third ring (36) is sleeved with a sealing ring, the inner wall of the sealing ring is sleeved with a third support shaft (35), and one end of the third support shaft (35) is fixedly connected with a third lamp plate (31).
10. The LED backlight source with uniform light distribution for the display device according to claim 5, wherein the fourth illumination assembly (2) further comprises a fourth electric telescopic rod (27), the inner wall of the top side portion (114) of one end of the fourth electric telescopic rod (27) is connected with a fourth fixing block (261) through a pin shaft, the fourth fixing block (261) is connected with a fourth sleeve ring (26) through one end of the fourth fixing block (261), a sealing ring is sleeved on the inner wall of the fourth sleeve ring (26), a fourth supporting shaft (25) is sleeved on the sealing ring, and the fourth supporting shaft (25) is connected with a fourth lamp plate (21) through one end of the fourth supporting shaft (25).
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| CN101793358A (en) * | 2010-02-05 | 2010-08-04 | 王锦峰 | Coaxial lighting AOI light source device |
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