CN111379980A - Light guide and light condensation structure for surface mount LED - Google Patents

Light guide and light condensation structure for surface mount LED Download PDF

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Publication number
CN111379980A
CN111379980A CN202010310882.7A CN202010310882A CN111379980A CN 111379980 A CN111379980 A CN 111379980A CN 202010310882 A CN202010310882 A CN 202010310882A CN 111379980 A CN111379980 A CN 111379980A
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CN
China
Prior art keywords
light
led
spherical surface
light source
light guiding
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Pending
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CN202010310882.7A
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Chinese (zh)
Inventor
刘昊和
赵凌舟
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Shanghai Flama Welding Equipment Manufacture Co ltd
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Shanghai Flama Welding Equipment Manufacture Co ltd
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Priority to CN202010310882.7A priority Critical patent/CN111379980A/en
Publication of CN111379980A publication Critical patent/CN111379980A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • 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
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention relates to the technical field of LED light source application, and discloses a light guide and light gathering structure for a surface mounted LED (light emitting diode), which solves the technical problems of large design area and low processing and production efficiency of the conventional LED and comprises a body, wherein the body is in a frustum pyramid shape, the top surface of the frustum pyramid is provided with an inwards concave scattering spherical surface, and the scattering spherical surface is a hemispherical surface; the inside of the body is of a solid structure, the body is completely transparent, the outer surface of the periphery of the body is a total reflection surface, and the bottom surface of the body is a light-emitting surface. According to the technical scheme, the emitted light of the surface mount LED is focused, so that the purposes that the surface mount LED can fully exert the characteristics of small area, convenience in flexible design, high production and processing speed and the like in actual production and use are achieved.

Description

Light guide and light condensation structure for surface mount LED
Technical Field
The invention relates to the technical field of LED light source application, in particular to a light guide and condensation structure for a patch LED.
Background
LED, chinese name: a light emitting diode is a solid state semiconductor device capable of converting electrical energy into visible light, which can directly convert electricity into light. The heart of the LED is a semiconductor wafer, one end of the wafer is attached to a support, the other end of the wafer is a cathode, the other end of the wafer is connected with an anode of a power supply, the whole wafer is packaged by epoxy resin, and the LED has the characteristics of long service life, low energy consumption, low price and the like, and is widely used in the industrial and living fields.
There are two types of LEDs available on the market, but the two types of LEDs have different advantages and disadvantages. One is self-provided with a light guide column, light can be focused in a certain area, but because the welding pins of elements are long, SMT manual pin cutting welding is needed during installation, and the defects are caused to the mass production working hour and the universal design of PCB design; the other type is a patch-shaped light emitting diode which can be quickly welded and applied in a large area, but the emitted light source is scattered and cannot be concentrated in a certain area for display, so that the patch-shaped light emitting diode is difficult to be independently applied to equipment.
Because the existing LED with two forms has disadvantages in the using process, the LED with the light guide column has the problem that the welding of a manual pin shearing is needed when the LED is installed, and the patch-shaped LED also has the problem that the light source is dispersed and can not be concentrated in a certain area for displaying. Therefore, the prior art LED has the disadvantages of large design area and slow manufacturing efficiency.
Disclosure of Invention
Aiming at the technical problems of large design area and low processing and production efficiency of an LED provided in the background technology, the invention provides a light guide and light condensation structure for a patch LED, which focuses the emitted light of the patch LED, thereby achieving the purpose of fully playing the characteristics of small area, convenient flexible design, fast production and processing and the like of the patch LED in actual production and use.
In order to achieve the purpose, the invention provides the following technical scheme:
a light guide and light gathering structure for a surface mounted LED comprises a body, wherein the body is in a frustum pyramid shape, the top surface of the frustum pyramid is provided with an inwards concave scattering spherical surface, and the scattering spherical surface is a hemispherical surface and is used for placing a primary light source in the center of the scattering spherical surface;
the light-emitting module comprises a body, wherein the inside of the body is of a solid structure, the body is completely transparent, the outer surface of the periphery of the body is a total reflection surface, and the bottom surface of the body is a light-emitting surface.
Through the technical scheme, the body can focus the emitted light of the surface mount LED, so that the purpose that the surface mount LED can fully exert the characteristics of small area, convenience in flexible design, high production and processing speed and the like in actual production and use is achieved. The specific application method is as follows: the first step is as follows: manufacturing a 3258 surface-mounted LED lamp bead into an initial light source, so that light emitting points of the initial light source are concentrated; the second step is that: the initial light source is arranged at the sphere center of the scattering spherical surface, so that light is guided out from the light-emitting surface under the action of the scattering spherical surface and the total reflection surface, and the functions of light guiding and light concentrating are achieved. The optical principle during use is as follows: the primary light source is arranged in the center of the scattering spherical surface 11, and light is emitted and then gathered from the scattering spherical surface primarily to form light beams in a limited direction in the light guide and condensation structure. Because the outer surface of the light guide and condensation structure is smooth, the light beams in the limited direction are totally reflected inside the total reflection surface of the light guide and condensation structure, and the light is emitted out of the light-emitting surface after passing through the body.
The invention is further configured to: the diameter of the scattering spherical surface is slightly larger than the diameter of an initial light source of the LED lamp bead.
Through the technical scheme: when the body is used for gathering the surface mount LED lamp light, the number of the used surface mount LED lamp beads is certain due to the use of the initial light source made of the surface mount LED lamp beads, so that the initial light source has a definite initial light source diameter. The diameter of the scattering spherical surface is slightly larger than the diameter of the initial light source of the LED lamp bead, so that the scattering spherical surface can play a scattering role in all light rays emitted by the LED lamp bead, and the light ray gathering treatment effect is improved.
The invention is further configured to: the body is made by transparent PC material moulding plastics.
The invention is further configured to: the surface roughness of the outer surface of the body is below 0.8.
The invention is further configured to: the body is a quadrangular frustum pyramid.
The invention is further configured to: the body is a pentagonal prism table.
The invention is further configured to: the body is a hexagonal frustum pyramid.
In conclusion, the invention has the following beneficial effects:
(1) by utilizing the light guide and light condensation structure, the number of the used patch diodes can be reduced, the advantage of small volume of the patch diodes can be fully exerted in actual production and use, and meanwhile, the manufacturing and production cost of products is saved;
(2) by utilizing the light guide and light condensation structure, the light concentration degree is improved, so that the flexible design is convenient when the surface mount diode is actually applied;
(3) through utilizing leaded light, spotlight structure, increase the dynamics of using to paster emitting diode, replace the LED from taking the leaded light post to need not the manual foot welding of cutting of SMT when the installation, accelerate production and processing greatly.
Drawings
Fig. 1 is a schematic perspective view of a light guiding and condensing structure in embodiment 1;
FIG. 2 is a schematic view of the optical principle and light direction of the light guiding and condensing structure in embodiment 1;
FIG. 3 is a schematic perspective view of a light guiding and condensing structure in example 2;
fig. 4 is a schematic perspective view of a light guiding and condensing structure in embodiment 3.
Reference numerals: 1. a body; 11. scattering spherical surfaces; 12. a total reflection surface; 13. and a light-emitting surface.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
Example 1
Referring to fig. 1, the main body of the light guiding and focusing structure for the patch LED is formed by a body 1, the body 1 is in a quadrangular frustum pyramid shape, the inside of the body 1 is of a solid structure, and the body 1 is made of a transparent PC material by injection molding to form a full transparent structure. The outer surface of the periphery of the body 1 is a total reflection surface 12, and the bottom surface of the body 1 is a light emitting surface 13. Wherein the total reflection surface 12 is a smooth surface having a surface roughness of 0.8 or less.
The top surface of the quadrangular frustum pyramid is provided with an inwards concave scattering spherical surface 11, the scattering spherical surface 11 is an inwards concave hemispherical surface, and the top surface of the quadrangular frustum pyramid is coincided with the circle center surface of the heat dissipation spherical surface 11 so as to conveniently place the primary light source at the sphere center position of the scattering spherical surface 11.
When in use: the initial light source is made of 3258 surface-mounted LED lamp beads, the light emitting points of the initial light source are concentrated, the initial diameter of the light source is definite, and the diameter of the scattering spherical surface 11 is slightly larger than that of the initial light source of the LED lamp beads. The optical principle during use is as follows: the diameter of the scattering spherical surface 11 is slightly larger than the diameter of the initial light source of the lamp bead, and the initial light source is arranged at the spherical center of the scattering spherical surface 11. After the light is emitted, the light is gathered from the scattering spherical surface 11 preliminarily, and light beams in limited directions are formed in the light guiding and condensing structure. Because the outer surface of the light guiding and condensing structure is smooth, the light beams in the limited direction are totally reflected inside the total reflection surface 12, so that the light is emitted out of the light-emitting surface 13 after passing through the body 1. The principle not only has theoretical explanatory performance, but also solves the engineering error in the actual injection molding process. During the injection molding process, if the air bubbles generated inside the body 1 due to insufficient injection pressure do not affect the transmission of light inside the structure.
Example 2
Referring to fig. 1, the main body of the light guide and light gathering structure for the patch LED is formed by a body 1, the body 1 is in a pentagonal frustum shape, the inside of the body 1 is of a solid structure, and the body 1 is made of a transparent PC material by injection molding to form a full transparent structure. The outer surface of the periphery of the body 1 is a total reflection surface 12, and the bottom surface of the body 1 is a light emitting surface 13. Wherein the total reflection surface 12 is a smooth surface having a surface roughness of 0.8 or less.
The top surface of the pentagonal frustum is provided with an inwards concave scattering spherical surface 11, the scattering spherical surface 11 is an inwards concave hemispherical surface, and the top surface of the pentagonal frustum coincides with the circle center surface of the heat dissipation spherical surface 11 so as to conveniently place the primary light source at the sphere center position of the scattering spherical surface 11.
When in use: the initial light source is made of 3258 surface-mounted LED lamp beads, the light emitting points of the initial light source are concentrated, the initial diameter of the light source is definite, and the diameter of the scattering spherical surface 11 is slightly larger than that of the initial light source of the LED lamp beads. The optical principle during use is as follows: the diameter of the scattering spherical surface 11 is slightly larger than the diameter of the initial light source of the lamp bead, and the initial light source is arranged at the spherical center of the scattering spherical surface 11. After the light is emitted, the light is gathered from the scattering spherical surface 11 preliminarily, and light beams in limited directions are formed in the light guiding and condensing structure. Because the outer surface of the light guiding and condensing structure is smooth, the light beams in the limited direction are totally reflected inside the total reflection surface 12, so that the light is emitted out of the light-emitting surface 13 after passing through the body 1. The principle not only has theoretical explanatory performance, but also solves the engineering error in the actual injection molding process. During the injection molding process, if the air bubbles generated inside the body 1 due to insufficient injection pressure do not affect the transmission of light inside the structure.
Example 3
Referring to fig. 1, the main body of the light guide and light gathering structure for the patch LED is formed by a body 1, the body 1 is in a hexagonal frustum shape, the inside of the body 1 is of a solid structure, and the body 1 is made of a transparent PC material by injection molding to form a full transparent structure. The outer surface of the periphery of the body 1 is a total reflection surface 12, and the bottom surface of the body 1 is a light emitting surface 13. Wherein the total reflection surface 12 is a smooth surface having a surface roughness of 0.8 or less.
The top surface of the hexagonal frustum is provided with an inwards concave scattering spherical surface 11, the scattering spherical surface 11 is an inwards concave hemispherical surface, and the top surface of the hexagonal frustum coincides with the circle center surface of the heat dissipation spherical surface 11 so as to conveniently place the primary light source at the sphere center position of the scattering spherical surface 11.
When in use: the initial light source is made of 3258 surface-mounted LED lamp beads, the light emitting points of the initial light source are concentrated, the initial diameter of the light source is definite, and the diameter of the scattering spherical surface 11 is slightly larger than that of the initial light source of the LED lamp beads. The optical principle during use is as follows: the diameter of the scattering spherical surface 11 is slightly larger than the diameter of the initial light source of the lamp bead, and the initial light source is arranged at the spherical center of the scattering spherical surface 11. After the light is emitted, the light is gathered from the scattering spherical surface 11 preliminarily, and light beams in limited directions are formed in the light guiding and condensing structure. Because the outer surface of the light guiding and condensing structure is smooth, the light beams in the limited direction are totally reflected inside the total reflection surface 12, so that the light is emitted out of the light-emitting surface 13 after passing through the body 1. The principle not only has theoretical explanatory performance, but also solves the engineering error in the actual injection molding process. During the injection molding process, if the air bubbles generated inside the body 1 due to insufficient injection pressure do not affect the transmission of light inside the structure.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (7)

1. A light guide and light gathering structure for a surface mounted LED comprises a body (1), and is characterized in that the body (1) is in a frustum pyramid shape, the top surface of the frustum pyramid is provided with an inwards concave scattering spherical surface (11), and the scattering spherical surface (11) is a hemispherical surface and is used for placing a primary light source in the center of the scattering spherical surface (11);
the light-emitting diode display panel is characterized in that the inside of the body (1) is of a solid structure, the body (1) is completely transparent, the outer surface of the periphery of the body (1) is a total reflection surface (12), and the bottom surface of the body (1) with a large area is a light-emitting surface (13).
2. The light guiding and condensing structure of claim 1, wherein said light guiding and condensing structure comprises: the diameter of the scattering spherical surface (11) is slightly larger than the diameter of an initial light source of the LED lamp bead.
3. The light guiding and condensing structure for the patch LED of claim 1, wherein said body (1) is made of transparent PC material by injection molding.
4. The light guiding and condensing structure for the patch LED of claim 1, wherein the surface roughness of the outer surface of said body (1) is below 0.8.
5. A light guiding and condensing structure for a patch LED according to any one of claims 1 to 4, wherein: the body (1) is a quadrangular frustum pyramid.
6. A light guiding and condensing structure for a patch LED according to any one of claims 1 to 4, wherein: the body (1) is a pentagonal prism table.
7. A light guiding and condensing structure for a patch LED according to any one of claims 1 to 4, wherein: the body (1) is a hexagonal frustum pyramid.
CN202010310882.7A 2020-04-20 2020-04-20 Light guide and light condensation structure for surface mount LED Pending CN111379980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010310882.7A CN111379980A (en) 2020-04-20 2020-04-20 Light guide and light condensation structure for surface mount LED

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Application Number Priority Date Filing Date Title
CN202010310882.7A CN111379980A (en) 2020-04-20 2020-04-20 Light guide and light condensation structure for surface mount LED

Publications (1)

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CN111379980A true CN111379980A (en) 2020-07-07

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205351205U (en) * 2016-01-26 2016-06-29 浙江司贝宁照明电器有限公司 LED lamp lens of floodlight
CN106989315A (en) * 2016-11-25 2017-07-28 福安工业股份有限公司 Pattern projecting lamp and light guide body thereof
CN206757247U (en) * 2017-02-23 2017-12-15 惠州市华阳多媒体电子有限公司 A kind of high backing structure of efficiency of light energy utilization

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205351205U (en) * 2016-01-26 2016-06-29 浙江司贝宁照明电器有限公司 LED lamp lens of floodlight
CN106989315A (en) * 2016-11-25 2017-07-28 福安工业股份有限公司 Pattern projecting lamp and light guide body thereof
CN206757247U (en) * 2017-02-23 2017-12-15 惠州市华阳多媒体电子有限公司 A kind of high backing structure of efficiency of light energy utilization

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Application publication date: 20200707