CN116892702A - Backlight light source structure for LED lamp - Google Patents

Backlight light source structure for LED lamp Download PDF

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Publication number
CN116892702A
CN116892702A CN202310866466.9A CN202310866466A CN116892702A CN 116892702 A CN116892702 A CN 116892702A CN 202310866466 A CN202310866466 A CN 202310866466A CN 116892702 A CN116892702 A CN 116892702A
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CN
China
Prior art keywords
light
light source
assembly
reflecting
concave
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Pending
Application number
CN202310866466.9A
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Chinese (zh)
Inventor
郭滨刚
邬俊
陈嘉婷
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Shenzhen Guangke Holographic Technology Co ltd
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Shenzhen Guangke Holographic Technology Co ltd
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Application filed by Shenzhen Guangke Holographic Technology Co ltd filed Critical Shenzhen Guangke Holographic Technology Co ltd
Priority to CN202310866466.9A priority Critical patent/CN116892702A/en
Publication of CN116892702A publication Critical patent/CN116892702A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The utility model provides a backlight light source structure for LED lamp, including the light source subassembly, even light component and second reflection component, because the light source subassembly can be to the light emission direction emission light, even light component sets up on the light-emitting path of light emission direction, including light guide element and first reflection component, light guide element can become area light source and even luminous with this light conversion, first reflection component can be with the light reflection to its light to the periphery of light source subassembly, and reflect along being on a parallel with light emission direction through the second reflection component, because the second reflection component includes the depressed part, this depressed part can be with the light reflection gathering of first reflection component reflection back, thereby the brightening of backlight light source structure has been realized, can also utilize the light of being reflected by first reflection component simultaneously, make the loss of light source reduce, the light source utilization ratio has been improved.

Description

Backlight light source structure for LED lamp
Technical Field
The application relates to the technical field of LED lamps, in particular to a backlight light source structure for an LED lamp.
Background
At present, the backlight source of the LED backlight is widely applied in the flat panel display industry, most of the existing backlight source structures are formed by a circuit board, LED lamp beads, a reflecting film, a light guide plate and the like, the number of the LED lamp beads is difficult to increase on the premise that the screen size is fixed and the LED specification is fixed, the light energy of the LED lamp beads is limited, and the brightening of the LED lamp beads is difficult to realize.
Disclosure of Invention
The application provides a backlight light source structure for an LED lamp, which can effectively reduce the loss and consumption of the LED light source and improve the utilization rate of the LED light source, thereby realizing the brightening of the backlight light source of the LED lamp.
In one embodiment, the present application provides a backlight light source structure for an LED lamp, comprising:
the light source assembly is used for emitting light rays in the light ray emergent direction;
the light homogenizing component is arranged on a light emitting path of the light source component along the light emitting direction, and comprises a light guide element and a first reflecting component, wherein the light guide element is used for converting the light into a surface light source and uniformly emitting the light, and the first reflecting component is used for reflecting the light emitted to the first reflecting component to the periphery of the light source component;
the second reflection assembly is arranged around the light source assembly and comprises a concave part for converging and emitting light reflected to the periphery of the light source assembly.
In one embodiment, the recess is a concave mirror.
In an embodiment, the light guiding element is perpendicular to the light emitting direction, the light guiding element has a light incident surface and a light emitting surface, a midpoint connecting line of the light incident surface and the light emitting surface coincides with an extension line of a light central line, the light incident surface is disposed opposite to the light source component, and the second reflecting components are disposed on the light incident surface of the light guiding element at intervals.
In one embodiment, the focal point of the concave mirror is located on an extension line of a line connecting the midpoints of the light incident surface and the light emergent surface, and the distance between the focal point of the concave mirror and the midpoint of the light incident surface or the light emergent surface is not more than 8mm.
In one embodiment, the concave mirror has a diameter dimension of 200 μm to 2mm and a recess depth of 100 μm to 1mm.
In one embodiment, the concave portions are arranged in one-to-one correspondence with the light source assemblies, and the light source assemblies are arranged at the center of the concave portions.
In an embodiment, the second reflection assembly comprises a plurality of installation cavities and a plurality of concave parts, the light source assembly is arranged in the installation cavities, the concave parts close to the installation cavities are arranged around the circumference of the installation cavities, and the concave parts far away from the installation cavities are arranged in an array.
In one embodiment, the light source module further comprises a base body, the base body is arranged on one side, away from the first reflecting component, of the second reflecting component and used for supporting the second reflecting component, a plurality of mounting holes are formed in the base body, the concave portions and the light source component are respectively arranged in the mounting holes, and the mounting holes of the concave portions are arranged around the mounting holes of the light source component.
In one embodiment, the light source module further comprises a base body, the base body is arranged on one side, away from the first reflecting component, of the second reflecting component and is used for supporting the second reflecting component, a plurality of mounting holes are formed in the base body, the number of the mounting holes corresponds to the number of the concave portions and the number of the light source modules one by one, the concave portions are arranged in the mounting holes, and the light source modules are arranged in the concave portions.
In one embodiment, the second reflection assembly is provided with a reflection layer and an opaque layer, the reflection layer is arranged close to the first reflection assembly, and a plurality of bubble structures and a cladding structure for wrapping the bubble structures are further arranged between the reflection layer and the opaque layer; the reflecting layer is recessed towards the direction of the light-tight layer to form the recessed part.
In one embodiment, a plurality of the concave portions are provided independently of each other.
In one embodiment, the second reflecting component further includes a connecting portion, and the plurality of concave portions are connected into an integral plane or curved surface structure through the connecting portion.
According to the backlight light source structure for the LED lamp in the above embodiment, since the light source assembly can emit light in the light emitting direction, the light homogenizing assembly is disposed on the light emitting path in the light emitting direction, and includes the light guiding element and the first reflecting assembly, the light guiding element can convert the light into a surface light source and emit light uniformly, the first reflecting assembly can reflect the light emitted to the periphery of the light source assembly, and the second reflecting assembly is disposed around the light source assembly, so that the light emitted to the first reflecting assembly is reflected by the second reflecting assembly along the direction parallel to the light emitting direction after being reflected by the second reflecting assembly, and since the second reflecting assembly includes the concave portion, the concave portion can reflect and gather the light reflected by the first reflecting assembly, thereby realizing the brightness enhancement of the backlight light source structure, and meanwhile, the light reflected by the first reflecting assembly can be utilized, so that the loss of the light source is improved, and the light source utilization rate is improved.
Drawings
FIG. 1 is a schematic diagram of a backlight source structure of an LED lamp;
FIG. 2 is a front view of a backlight source structure of an LED lamp according to an embodiment;
FIG. 3 is a side view of a first embodiment of a backlight source structure of an LED lamp;
FIG. 4 is a schematic diagram of a light guiding element;
FIG. 5 is a schematic diagram of a reflective assembly;
fig. 6 is a schematic structural diagram of a backlight source structure of an LED lamp according to a second embodiment;
FIG. 7 is a side view of a reflective assembly of a second embodiment;
FIG. 8 is a schematic diagram of a third embodiment of a backlight source structure of an LED lamp;
fig. 9 is a schematic structural view of a backlight source structure of an LED lamp according to a fourth embodiment;
wherein: 1. a light source component 2, a first reflecting component 3, a second reflecting component 31, a concave part 32, a reflecting layer 33, an opaque layer 34, a mounting cavity 35 and a bubble structure, 36, a cladding structure, 4, a light guide element, 41, a light incident surface, 42, a light emergent surface, 5, a base body, 51, mounting holes, 511, a first mounting hole, 512 and a second mounting hole.
Detailed Description
The application will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present application have not been shown or described in the specification in order to avoid obscuring the core portions of the present application, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operational steps involved in the embodiments may be sequentially exchanged or adjusted in a manner apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of describing certain embodiments and are not necessarily intended to imply a required composition and/or order.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.
Most of the existing backlight light source structures are formed by circuit boards, light sources, reflecting films, light guide elements and the like and other combinations, the light guide elements are used for converting point light sources emitted by the light sources into surface light sources and uniformly emitting the surface light sources, however, the brightness of a backlight part is lower than that of the part where the light sources are arranged, so that the watching effect is poor, such as insufficient brightness at the backlight part of an LED display screen, darkening patterns and affecting visual watching. However, due to the limitation of the structure of the backlight light source itself, the backlight area cannot be reduced by increasing the number of light sources, thereby achieving the brightness enhancement of the backlight portion.
The application creatively utilizes the light wasted by the partial reflection of the light homogenizing component, reflects the partial light to the light homogenizing component again by arranging a new reflection component and sends out the light, and visually increases the luminous point, thereby reducing the backlight area and achieving the purpose of brightening.
The embodiment provides a backlight light source structure for an LED lamp, can be applied to LED lamp box bill-board or display screen, including light source subassembly 1, even optical subassembly and second reflection subassembly 3, even optical subassembly includes light guide element 4 and first reflection component 2, even optical subassembly sets up on the light-emitting path of light exit direction, and partial light evenly sends after light guide element 4 and first reflection component 2, and the rest is reflected by first reflection subassembly 2 and is wasted light around light source subassembly 1, and the second reflection subassembly 3 through setting up in this region gathers the back again and is penetrated, and this exit direction is the parallel direction of light exit direction roughly, and the light through reflection gathers to even optical element department, has realized the recycling of this partial light source, has reduced the energy consumption of light source, has improved the utilization ratio of light source. Meanwhile, the second reflecting component 3 becomes a luminous point equivalent to the light source component 1, which essentially corresponds to increasing the luminous point and reducing the backlight area, thereby realizing the brightness enhancement. Specific examples are described below.
Embodiment one:
referring to fig. 1-3, the present embodiment provides a backlight light source structure for an LED lamp, including a light source assembly 1, a light homogenizing assembly and a second reflecting assembly 3, where the light source assembly 1 is configured to emit light in a light emitting direction, the light homogenizing assembly is disposed on a light emitting path of the light source assembly 1 along the light emitting direction, the light homogenizing assembly includes a light guiding element 4 and a first reflecting assembly 2, the light guiding element 4 is configured to convert the light into a surface light source and uniformly emit the light, the first reflecting assembly 2 is configured to reflect the light emitted to the first reflecting assembly 2 to the periphery of the light source assembly 1, the second reflecting assembly 3 is disposed around the light source assembly 1, and the second reflecting assembly 3 includes a concave portion 31 configured to concentrate the light reflected to the periphery of the light source assembly 1 and emit the concentrated light, so as to implement light aggregation, thereby increasing a light emitting point, enhancing a light source brightness, improving a light source utilization rate, and saving energy.
Specifically, the first reflecting element 2 is a reflecting film capable of performing diffuse reflection, and reflects part of light back by using the diffuse emission principle, and then reflects and gathers the light through the second reflecting component 3.
Preferably, the concave portion 31 is a concave mirror, and light reflected to the position of the concave mirror is collected again and emitted by utilizing the light collecting characteristic of the concave mirror, so that the concave mirror and the light source assembly 1 form a light emitting structure, the light emitting area is increased on the basis that the number and the structure of the light source assembly 1 are not changed, and the brightness of the backlight structure is enhanced.
Specifically, in general, the light source component 1 is an LED lamp bead, which is connected with a circuit board through a wire, so as to realize power supply and light emission.
In this embodiment, the light guide element 4 is disposed perpendicular to the light emitting direction, so as to convert the light into a surface light source and uniformly emit light. The light guide element 4 is a light guide plate.
Referring to fig. 4, the light guiding element 4 has a light incident surface 41 and a light emergent surface 42, the light incident surface 41 is disposed opposite to the light source assembly 1, and the second reflecting assembly 2 is disposed on the light incident surface 41 of the light guiding element 4, and the light emergent surface 42 is configured to uniformly disperse light, so that the point light source is converted into a surface light source, and the displayed image effect is better.
In this embodiment, the line connecting the midpoints of the light incident surface 41 and the light emergent surface 42 coincides with the extension line of the light center line, and the focal point of the concave mirror is located on the extension line connecting the midpoints of the light incident surface 41 and the light emergent surface 42, and the distance between the focal point and the midpoint of the light incident surface 41 or the light emergent surface 42 is not more than 8mm, so as to ensure that the light can be reflected to the light guiding element 4.
In this embodiment, the diameter of the concave mirror is 200 μm-2mm, the concave depth is 100 μm-1mm, and the concave depth does not exceed the radius of the concave mirror, so that the light rays are better concentrated and brightened.
Referring to fig. 3, in this embodiment, the concave portions 31 (concave mirrors) are disposed in a one-to-one correspondence with the light source assemblies 1, and the light source assemblies 1 are disposed at the center of the concave portions 31 (concave mirrors), which is beneficial to reducing the layout of the concave mirrors, so that the preparation and the installation are more convenient.
In this embodiment, the second reflective component 3 has a reflective layer 32 and an opaque layer 33, the reflective layer 32 is disposed near the light guiding element 4 (or the first reflective component 2), the reflective layer 32 is recessed toward the opaque layer 33 to form the recessed portions 31, and the number of the recessed portions 31 corresponds to the light source components 1 one by one, and the light source components 1 are disposed at the center of the recessed portions 31, so that the brightness of each light source component 1 can be brightened, so that the picture seen in application is brighter, and the effect is better.
Referring to fig. 5, a plurality of bubble structures 35 and a cladding structure 36 that wraps the bubble structures 35 are further disposed between the reflective layer 32 and the opaque layer 33, the bubble structures 35 are generally elliptical and irregularly arranged, and each bubble structure 35 may have different sizes, and refractive index differences exist between the bubble structures 35 and the cladding structure 36, so as to form a microstructure similar to a one-dimensional photonic crystal, and bragg scattering can be performed on incident light, which is similar to a photonic band gap mechanism, that is, incident light in a certain frequency range enters the microstructure and is completely scattered, so that the reflectivity of the incident light can be improved, and more light is reflected and concentrated.
In this embodiment, the plurality of concave portions 31 are disposed independently of each other, a through hole is disposed at the bottom of the concave portion 31 for a wire to pass through, and the wire is connected to the light source assembly 1 (lamp bead) and the circuit board, and the reflective layer 32 forming the concave portion 31 and the light-impermeable layer 33 and the wrapping structure 36 therebetween are made of resin, so that the concave portion 31 can be disposed in contact with the circuit board.
In other embodiments, the second reflecting component 3 further includes a connecting portion, and the plurality of concave portions 31 are connected into an integral plane or in a curved surface structure through the connecting portion, and the whole second reflecting component 3 is disposed in contact with the circuit board, so that the plurality of concave portions 31 can be formed by embossing the reflecting layer 32 of the second reflecting component 3 formed by the plurality of bubble structures 35 and the cladding structures 36 during specific preparation, and the preparation process is simpler and more convenient than the above embodiments.
Example two
Referring to fig. 6 and 7, the present embodiment provides a backlight light source structure for an LED lamp, including a light source assembly 1, a light homogenizing assembly and a second reflecting assembly 3, the light source assembly 1 is configured to emit light in a light emitting direction, the light homogenizing assembly is disposed on a light emitting path of the light source assembly 1 along the light emitting direction, the light homogenizing assembly includes a light guiding element 4 and a first reflecting assembly 2, the light guiding element 4 is configured to convert the light into a surface light source and uniformly emit the light, the first reflecting assembly 2 is configured to reflect the light emitted to the first reflecting assembly 2 to the periphery of the light source assembly 1, the second reflecting assembly 3 is disposed around the light source assembly 1, and the second reflecting assembly 3 includes a concave portion 31 configured to concentrate the light reflected to the periphery of the light source assembly 1 and emit the light, so as to realize light aggregation, thereby increasing a light emitting point, enhancing a light source brightness, improving a light source utilization rate, and saving energy.
Specifically, the first reflecting element 2 is a reflecting film capable of performing diffuse reflection, and reflects part of light back by using the diffuse emission principle, and then reflects and gathers the light through the second reflecting component 3.
Preferably, the concave portion 31 is a concave mirror, and light reflected to the position of the concave mirror is collected again and emitted by utilizing the light collecting characteristic of the concave mirror, so that the concave mirror and the light source assembly 1 form a light emitting structure, the light emitting area is increased on the basis that the number and the structure of the light source assembly 1 are not changed, and the brightness of the backlight structure is enhanced.
Specifically, in general, the light source component 1 is an LED lamp bead, which is connected with a circuit board through a wire, so as to realize power supply and light emission.
In this embodiment, the light guide element 4 is disposed perpendicular to the light emitting direction, so as to convert the light into a surface light source and uniformly emit light. The light guide element 4 is a light guide plate, which is a conventional technical means in the art, and will not be described herein.
Referring to fig. 5, the light guiding element 4 has a light incident surface 41 and a light emergent surface 42, the light incident surface 41 is disposed opposite to the light source assembly 1, and the second reflecting assembly 2 is disposed on the light incident surface 41 of the light guiding element 4, and the light emergent surface 42 is configured to uniformly disperse light, so that the point light source is converted into a surface light source, and the displayed image effect is better.
In this embodiment, the line connecting the midpoints of the light incident surface 41 and the light emergent surface 42 coincides with the extension line of the light center line, and the focal point of the concave mirror is located on the extension line connecting the midpoints of the light incident surface 41 and the light emergent surface 42, and the distance between the focal point and the midpoint of the light incident surface 41 or the light emergent surface 42 is not more than 8mm, so as to ensure that the light can be reflected to the light guiding element 4.
In this embodiment, the diameter of the concave mirror is 200 μm-2mm, the concave depth is 100 μm-1mm, and the concave depth does not exceed the radius of the concave mirror, so that the light rays are better concentrated and brightened.
Referring to fig. 5, in this embodiment, the reflective component 3 has a reflective layer 32 and an opaque layer 33, the reflective layer 32 is disposed near the light guiding element 4 (or the first reflective component 2), the reflective layer 32 is recessed toward the opaque layer 33 to form a plurality of recessed portions 31, the second reflective component 3 further includes a plurality of mounting cavities 34, the recessed portions 31 are disposed around the mounting cavities 34, and the light source component 1 is disposed in the mounting cavities 34.
Specifically, the concave portions 31 close to the mounting cavity 34 are uniformly disposed around the circumference of the mounting cavity 34, and may be disposed 1 turn, or may be disposed 2 turns, etc., and the concave portions 31 far away from the mounting cavity 34 are arranged in an array, and the mounting cavity 34 is surrounded therein, so that all light rays on the circumference of the light source assembly 1 can be ensured to be concentrated and reflected, and the utilization rate of the light source is improved.
In this embodiment, the plurality of concave portions 31 are disposed independently of each other, and a through hole is disposed at the bottom of the mounting cavity 34 for a wire to pass through, and the wire is connected to the light source assembly 1 (lamp bead) and the circuit board.
In this embodiment, the second reflecting member 3 is made of resin, has insulation property, and thus can be disposed in contact with a circuit board.
In other embodiments, the second reflecting component 3 further includes a connecting portion, and the plurality of concave portions 31 are connected into an integral plane or in a curved surface structure through the connecting portion, and the whole second reflecting component 3 is disposed in contact with the circuit board, so that the plurality of concave portions 31 can be formed by embossing the reflecting layer 32 of the second reflecting component 3 formed by the plurality of bubble structures 35 and the cladding structures 36 during specific preparation, and the preparation process is simpler and more convenient than the above embodiments.
In this embodiment, a plurality of bubble structures 35 and a cladding structure 36 wrapping the bubble structures 35 are further disposed between the reflective layer 32 and the opaque layer 33, the bubble structures 35 are approximately elliptical and irregularly arranged, and each bubble structure 35 may have different sizes, and refractive index differences exist between the bubble structures 35 and the cladding structure 36 to form a microstructure similar to a one-dimensional photonic crystal, so that bragg scattering can be performed on incident light, and a photon forbidden band mechanism is similar, that is, incident light in a certain frequency range enters the microstructure and is completely scattered, so that the reflectivity of the incident light can be improved, and the light is reflected and concentrated more.
Example III
Referring to fig. 8, the present embodiment provides a backlight light source structure for an LED lamp, including a light source assembly 1, a light homogenizing assembly and a second reflecting assembly 3, where the light source assembly 1 is configured to emit light in a light emitting direction, the light homogenizing assembly is disposed on a light emitting path of the light source assembly 1 along the light emitting direction, the light homogenizing assembly includes a light guiding element 4 and a first reflecting assembly 2, the light guiding element 4 is configured to convert the light into a surface light source and uniformly emit the light, the first reflecting assembly 2 is configured to reflect the light emitted to the first reflecting assembly 2 to the periphery of the light source assembly 1, the second reflecting assembly 3 is disposed around the light source assembly 1, and the second reflecting assembly 3 includes a concave portion 31 configured to concentrate the light reflected to the periphery of the light source assembly 1 and emit the light, so as to implement light aggregation, thereby increasing a light emitting point, enhancing a light source brightness, improving a light source utilization rate, and saving energy.
Specifically, the first reflecting element 2 is a reflecting film capable of performing diffuse reflection, and reflects part of light back by using the diffuse emission principle, and then reflects and gathers the light through the second reflecting component 3.
Preferably, the concave portion 31 is a concave mirror, and light reflected to the position of the concave mirror is collected again and emitted by utilizing the light collecting characteristic of the concave mirror, so that the concave mirror and the light source assembly 1 form a light emitting structure, the light emitting area is increased on the basis that the number and the structure of the light source assembly 1 are not changed, and the brightness of the backlight structure is enhanced.
Specifically, in general, the light source component 1 is an LED lamp bead, which is connected with a circuit board through a wire, so as to realize power supply and light emission.
In this embodiment, the light guide element 4 is disposed perpendicular to the light emitting direction, so as to convert the light into a surface light source and uniformly emit light. The light guide element 4 is a light guide plate.
Referring to fig. 5, the light guiding element 4 has a light incident surface 41 and a light emergent surface 42, the light incident surface 41 is disposed opposite to the light source assembly 1, and the second reflecting assembly 2 is disposed on the light incident surface 41 of the light guiding element 4, and the light emergent surface 42 is configured to uniformly disperse light, so that the point light source is converted into a surface light source, and the displayed image effect is better.
In this embodiment, the line connecting the midpoints of the light incident surface 41 and the light emergent surface 42 coincides with the extension line of the light center line, and the focal point of the concave mirror is located on the extension line connecting the midpoints of the light incident surface 41 and the light emergent surface 42, and the distance between the focal point and the midpoint of the light incident surface 41 or the light emergent surface 42 is not more than 8mm, so as to ensure that the light can be reflected to the light guiding element 4.
In this embodiment, the diameter of the concave mirror is 200 μm-2mm, the concave depth is 100 μm-1mm, and the concave depth does not exceed the radius of the concave mirror, so that the light rays are better concentrated and brightened.
In this embodiment, the light source module further includes a base 5, the base 5 is disposed on a side of the second reflection module 3 away from the first reflection module 2, so as to support the second reflection module 3, the base 5 has a reflection surface, the reflection surface is disposed near the light guiding element 4, a plurality of mounting holes 51 are further disposed on the reflection surface, the recess 31 and the light source module 1 are respectively disposed in the mounting holes 51, and the mounting holes of the recess 31 are disposed around the mounting holes of the light source module 1, so as to reflect and collect light around the light source module 1.
Specifically, the mounting holes 51 are distributed on the reflecting surface in a regular shape, the mounting holes 51 comprise a first mounting hole 511 and a second mounting hole 512, a part of the first mounting holes 511 encircle the second mounting hole 512, the rest of the first mounting holes are distributed according to an array, the second mounting holes 512 are surrounded, the first mounting holes 511 are used for mounting the concave parts 31, the second mounting holes 512 are used for mounting the light source component 1, a through hole is formed in the center of the bottom (one side far away from the light source component 1) of the second mounting holes 512, a wire is arranged in the through hole in a penetrating mode, and connection with a circuit board is achieved through the wire.
In this embodiment, the reflection assembly 3 has a reflection layer 32 and an opaque layer 33, the reflection layer 32 is disposed near the light guide element 4 (or the first reflection assembly 2), and the reflection layer 32 is recessed toward the opaque layer 33 to form the recess 31.
In this embodiment, a plurality of bubble structures 35 and a cladding structure 36 wrapping the bubble structures 35 are further disposed between the reflective layer 32 and the opaque layer 33, the bubble structures 35 are approximately elliptical and irregularly arranged, and each bubble structure 35 may have different sizes, and refractive index differences exist between the bubble structures 35 and the cladding structure 36 to form a microstructure similar to a one-dimensional photonic crystal, so that bragg scattering can be performed on incident light, and a photon forbidden band mechanism is similar, that is, incident light in a certain frequency range enters the microstructure and is completely scattered, so that the reflectivity of the incident light can be improved, and the light is reflected and concentrated more.
Example IV
Referring to fig. 9, the present embodiment provides a backlight light source structure for an LED lamp, including a light source assembly 1, a light homogenizing assembly and a second reflecting assembly 3, where the light source assembly 1 is configured to emit light in a light emitting direction, the light homogenizing assembly is disposed on a light emitting path of the light source assembly 1 along the light emitting direction, the light homogenizing assembly includes a light guiding element 4 and a first reflecting assembly 2, the light guiding element 4 is configured to convert the light into a surface light source and uniformly emit the light, the first reflecting assembly 2 is configured to reflect the light emitted to the first reflecting assembly 2 to the periphery of the light source assembly 1, the second reflecting assembly 3 is disposed around the light source assembly 1, and the second reflecting assembly 3 includes a concave portion 31 configured to concentrate the light reflected to the periphery of the light source assembly 1 and emit the light, so as to implement light aggregation, thereby increasing a light emitting point, enhancing a light source brightness, improving a light source utilization rate, and saving energy.
Specifically, the first reflecting element 2 is a reflecting film capable of performing diffuse reflection, and reflects part of light back by using the diffuse emission principle, and then reflects and gathers the light through the second reflecting component 3.
Preferably, the concave portion 31 is a concave mirror, and light reflected to the position of the concave mirror is collected again and emitted by utilizing the light collecting characteristic of the concave mirror, so that the concave mirror and the light source assembly 1 form a light emitting structure, the light emitting area is increased on the basis that the number and the structure of the light source assembly 1 are not changed, and the brightness of the backlight structure is enhanced.
Specifically, in general, the light source component 1 is an LED lamp bead, which is connected with a circuit board through a wire, so as to realize power supply and light emission.
In this embodiment, the light guide element 4 is disposed perpendicular to the light emitting direction, so as to convert the light into a surface light source and uniformly emit light. The light guide element 4 is a light guide plate.
Referring to fig. 5, the light guiding element 4 has a light incident surface 41 and a light emergent surface 42, the light incident surface 41 is disposed opposite to the light source assembly 1, and the second reflecting assembly 2 is disposed on the light incident surface 41 of the light guiding element 4, and the light emergent surface 42 is configured to uniformly disperse light, so that the point light source is converted into a surface light source, and the displayed image effect is better.
In this embodiment, the line connecting the midpoints of the light incident surface 41 and the light emergent surface 42 coincides with the extension line of the light center line, and the focal point of the concave mirror is located on the extension line connecting the midpoints of the light incident surface 41 and the light emergent surface 42, and the distance between the focal point and the midpoint of the light incident surface 41 or the light emergent surface 42 is not more than 8mm, so as to ensure that the light can be reflected to the light guiding element 4.
In this embodiment, the diameter of the concave mirror is 200 μm-2mm, the concave depth is 100 μm-1mm, and the concave depth does not exceed the radius of the concave mirror, so that the light rays are better concentrated and brightened.
In this embodiment, the light source module further includes a base 5, the base 5 is disposed on a side of the second reflection module 3 away from the first reflection module 2, so as to support the second reflection module 3, the base 5 has a reflection surface, the reflection surface is disposed near the light guiding element 4, a plurality of mounting holes 51 are further disposed on the reflection surface, the recess 31 and the light source module 1 are respectively disposed in the mounting holes 51, and the mounting holes of the recess 31 are disposed around the mounting holes of the light source module 1, so as to reflect and collect light around the light source module 1.
Specifically, the mounting holes 51 are distributed on the reflecting surface in a regular shape, the number of the mounting holes 51 corresponds to the number of the concave portions 31 and the number of the light source assemblies 1 one by one, the concave portions 31 are arranged in the mounting holes 51, the light source assemblies 1 are arranged in the concave portions 31, through holes are formed in the centers of the bottoms (on the sides far away from the light source assemblies 1) of the mounting holes 512, wires are arranged in the through holes in a penetrating mode, and connection with a circuit board is achieved through the wires.
In this embodiment, the reflection assembly 3 has a reflection layer 32 and an opaque layer 33, the reflection layer 32 is disposed near the light guide element 4 (or the first reflection assembly 2), and the reflection layer 32 is recessed toward the opaque layer 33 to form the recess 31.
In this embodiment, a plurality of bubble structures 35 and a cladding structure 36 wrapping the bubble structures 35 are further disposed between the reflective layer 32 and the opaque layer 33, the bubble structures 35 are approximately elliptical and irregularly arranged, and each bubble structure 35 may have different sizes, and refractive index differences exist between the bubble structures 35 and the cladding structure 36 to form a microstructure similar to a one-dimensional photonic crystal, so that bragg scattering can be performed on incident light, and a photon forbidden band mechanism is similar, that is, incident light in a certain frequency range enters the microstructure and is completely scattered, so that the reflectivity of the incident light can be improved, and the light is reflected and concentrated more.
Example five
The first embodiment is different from the first embodiment in that the second reflecting component 3 includes 1 concave portion 31, and the light source components 1 are uniformly distributed in the center of the concave portion 31.
The foregoing description of the application has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the application pertains, based on the idea of the application.

Claims (10)

1. A backlight light source structure for an LED lamp, comprising:
the light source assembly is used for emitting light rays in the light ray emergent direction;
the light homogenizing component is arranged on a light emitting path of the light source component along the light emitting direction, and comprises a light guide element and a first reflecting component, wherein the light guide element is used for converting the light into a surface light source and uniformly emitting the light, and the first reflecting component is used for reflecting the light emitted to the first reflecting component to the periphery of the light source component;
the second reflection assembly is arranged around the light source assembly and comprises a concave part for converging and emitting light reflected to the periphery of the light source assembly.
2. The backlight source structure for an LED lamp as set forth in claim 1, wherein the concave portion is a concave mirror.
3. The backlight structure of claim 2, wherein the light guide element is perpendicular to the light emitting direction, the light guide element has a light incident surface and a light emitting surface, a line connecting a midpoint of the light incident surface and the light emitting surface coincides with an extension line of a light center line, the light incident surface is disposed opposite to the light source assembly, and the second reflecting assembly is disposed on the light incident surface of the light guide element at intervals.
4. A backlight source structure for an LED lamp as claimed in claim 3, wherein the focal point of the concave mirror is located on an extension line of a line connecting the midpoints of the light entrance surface and the light exit surface, and a distance from the midpoint of the light entrance surface or the light exit surface is not more than 8mm.
5. The backlight structure for an LED lamp as set forth in claim 4, wherein the concave mirror has a diameter size of 200 μm to 2mm and a recess depth of 100 μm to 1mm.
6. The backlight light source structure for an LED lamp as set forth in claim 1, wherein the concave portions are provided in one-to-one correspondence with the light source modules, the light source modules being disposed at the center of the concave portions.
7. The backlight source structure for an LED lamp of claim 1, wherein the second reflecting assembly comprises a plurality of mounting cavities and a plurality of concave portions, the light source assembly is disposed in the mounting cavities, the concave portions close to the mounting cavities are arranged around the circumference of the mounting cavities, and the concave portions far from the mounting cavities are arranged in an array.
8. The backlight source structure for an LED lamp as set forth in claim 1, further comprising a base disposed on a side of the second reflective assembly remote from the first reflective assembly for supporting the second reflective assembly; the base body is provided with a plurality of mounting holes, the concave part and the light source component are respectively arranged in the mounting holes, and the mounting holes of the concave part are arranged around the mounting holes of the light source component; or, the number of the mounting holes corresponds to the number of the concave parts and the number of the light source components one by one, the concave parts are arranged in the mounting holes, and the light source components are arranged in the concave parts.
9. The backlight source structure for an LED lamp according to any one of claims 1 to 8, wherein the second reflecting member has a reflecting layer and an opaque layer, the reflecting layer being disposed adjacent to the first reflecting member, a plurality of bubble structures and a cladding structure that wraps the bubble structures being further disposed between the reflecting layer and the opaque layer; the reflecting layer is recessed towards the direction of the light-tight layer to form the recessed part.
10. The backlight source structure for an LED lamp as claimed in claim 1, wherein a plurality of the concave portions are provided independently of each other; or, the second reflection assembly further comprises a connecting part, and the plurality of concave parts are connected into an integrated plane or curved surface structure through the connecting part.
CN202310866466.9A 2023-07-14 2023-07-14 Backlight light source structure for LED lamp Pending CN116892702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310866466.9A CN116892702A (en) 2023-07-14 2023-07-14 Backlight light source structure for LED lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310866466.9A CN116892702A (en) 2023-07-14 2023-07-14 Backlight light source structure for LED lamp

Publications (1)

Publication Number Publication Date
CN116892702A true CN116892702A (en) 2023-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310866466.9A Pending CN116892702A (en) 2023-07-14 2023-07-14 Backlight light source structure for LED lamp

Country Status (1)

Country Link
CN (1) CN116892702A (en)

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