TWM593732U - Concentrated LED light source module - Google Patents

Abstract

The present disclosure proposes a condensing light-emitting diode (LED) light source module, which includes a lamp board and a body. The light board is suitable for setting a plurality of LEDs. The body has a first reflective curved surface and a second reflective curved surface that are opposite to each other. The body is provided with a first engaging portion at a first end of the first reflective curved surface, and a second engaging portion is provided at a second end of the second reflective curved surface. The board is fixed and arranged between the first reflective curved surface and the second reflective curved surface by the first engaging portion and the second engaging portion, and the light emitted by the LED passes through the first reflective curved surface and the second reflective curved surface After the spotlight is reflected, it shoots out of the body.

Description

Concentrating light-emitting diode light source module

The present invention is a light-emitting diode (Light Emitting Diode, LED) light source module.

Green plants need photosynthesis to obtain energy, so sufficient sunlight is a very important factor for plant growth. However, natural daylight is uncontrollable, and the daytime time varies throughout the year. The daytime time in summer is longer and the daytime time in winter is shorter. In order to provide uninterrupted light for plants to effectively accelerate the growth rate of plants, artificial light becomes more and more important in the cultivation process of plants.

LEDs have narrow wavelength characteristics, and generally the full width at half maximum (FWHM) is about ±20 nm, which can effectively correspond to the wavelength range required for photosynthesis of plants. In addition, the LED light source module can achieve the advantage of adjusting the spectrum by combining LED dies with different wavelengths. For example, red, blue, white and other crystals can be mixed in proportion to produce the effect similar to sunlight seen by the human eye, or Infrared (IR) wavelength grains are added to provide the effect of accelerating or inhibiting plant flowering.

In addition, compared with traditional light sources (such as fluorescent lamps, fluorescent lamps, halogen bulbs, gas discharge lamps, high-pressure sodium lamps, etc.), LED lamps will have higher photoelectric conversion efficiency and longer service life, and under the same optical power The volume and weight are also lower than fluorescent bulbs, and the secondary optical lens can produce a variety of light types (concentrating or scattering), which is very suitable for the application of auxiliary lighting for plant growth.

Existing LED packages mostly use the Plastic Leaded Chip Carrier (PLCC) process. The luminous angle is about 100˚~120˚. The common T8 LED tube is a wide-angle luminous type. The luminous angle generated through the lamp cover is about 180. ˚The overall light intensity is weak and prone to light leakage. If it is a condensing light fixture, it needs to be equipped with a reflector or a secondary optical lens to collect light to produce the effect of condensing and high light intensity. In high-density cultivated crops or environments where light leakage needs to be reduced, concentrating LED lamps can increase the utilization of light and reduce the loss of energy (light sources, air conditioning, etc.).

Therefore, how to design a condensing LED light source module and apply the LED light source more effectively to plant growth and cultivation, thereby shortening the time for plant growth, that is, the applicant of this new type and related manufacturers engaged in this industry are eager to study The direction of improvement.

The present disclosure proposes a condensing LED light source module designed for plant cultivation needs, which has a spectrum corresponding to plant photosynthesis, an efficient condensing/reflecting structure, and reducing the heat transfer path of LED chips. The group can improve the light intensity and uniformity of light distribution on the light receiving surface, as well as increase the service life and reduce the power consumption.

The present disclosure proposes a condensing LED light source module. The concentrating LED light source module includes a lamp board and a body. The light board is suitable for setting a plurality of LEDs. The body has a first reflective curved surface and a second reflective curved surface that are opposite to each other. The body is provided with a first engaging portion at a first end of the first reflective curved surface, and a second engaging portion is provided at a second end of the second reflective curved surface. The board is fixed and arranged between the first reflective curved surface and the second reflective curved surface by the first engaging portion and the second engaging portion, and the light emitted by these LEDs passes through the first reflective curved surface and the second reflective curved surface After the spotlight is reflected, it shoots out of the body.

The embodiments of the present disclosure will be described more fully below with reference to the accompanying drawings. The embodiments of the present disclosure can also take many different forms. Specifically, these embodiments are provided to make the disclosed content more thorough and complete, and to fully convey the concept of each embodiment to those with ordinary knowledge in the technical field to which they belong.

Please refer to the first picture and the second picture at the same time. In an embodiment of the present disclosure, the condensing LED light source module 1 includes a lamp board 10 and a body 20. The light board 10 is suitable for providing a plurality of LEDs 12. The body 20 has a first reflective curved surface 21 and a second reflective curved surface 22 disposed oppositely. The body 20 is provided with a first engaging portion 23 at a first end 211 of the first reflective curved surface 21 and a second end 221 of the second reflective curved surface 22 The second engaging portion 24 is provided. The lamp board 10 is fixed by the first engaging portion 23 and the second engaging portion 24 and is disposed between the first reflective curved surface 21 and the second reflective curved surface 22. The light emitted by the LED 12 is reflected by the first reflective curved surface 21 and the second reflective curved surface 22 and then exits the body 20.

Please refer to the second figure. The first curve C1 of the first reflective curved surface 21 along the AA section conforms to the following curve equation: y ₁ = a ₁ x ₁ ² + b ₁

Where x ₁ is the horizontal distance of the first curve C1 relative to the optical axis O of the LED 12 and y ₁ is the vertical distance of the first curve C1 relative to the optical axis O of the LED 12 (ie, the y-axis, shown in the third figure) , A ₁ and b ₁ are real numbers.

The second curve C2 of the second reflective curved surface 22 along the AA section conforms to the following curve equation: y ₂ =a ₂ x ₂ ² +b ₂

Where x ₂ is the horizontal distance of the second curve C2 relative to the optical axis O of the LED 12, y ₂ is the vertical distance of the second curve C2 relative to the optical axis O of the LED 12, and a ₂ and b ₂ are both real numbers.

In detail, the plurality of LEDs 12 are arranged in a row in a direction perpendicular to the A-A cross section and are arranged on the lamp board 10. In the body 20, the concave surface 213 in the first reflective curved surface 21 and the concave surface 223 in the second reflective curved surface 22 are disposed opposite to each other. The first engaging portion 23 provided at the first end 211 of the first reflective curved surface 21 and the set At the second engaging portion 24 at the second end 221 of the second reflective curved surface 22, the lamp board 10 is engaged with the first engaging portion 23 and the second engaging portion 24, so that the lamp board 10 is fixed and disposed on the second Between a reflective curved surface 21 and a second reflective curved surface 22.

In one embodiment, the condensing LED light source module 1 may further include a transparent cover 30. The body 20 is provided with a third engaging portion 25 at the third end 212 of the first reflective curved surface 21, a fourth engaging portion 26 is provided at the fourth end 222 of the second reflective curved surface 22, and the transparent cover 30 is passed through the third The engaging portion 25 and the fourth engaging portion 26 engage the transparent cover plate 30 with the third engaging portion 25 and the fourth engaging portion 26 to fix the transparent cover plate 30 on the first reflective curved surface 21 and the second Between the two reflective curved surfaces 22.

Please refer to the second and third figures at the same time. With the arrangement of the lamp plate 10 and the transparent cover plate 30, the condensing LED light source module 1 is formed into a cup-shaped structure with an upper width and a narrower width. The lamp plate 10 is provided at a narrow portion of the cup-shaped structure, and the transparent cover plate 30 is provided At the wide part of the cup-shaped structure, the light emitted by the LED 12 on the lamp board 10 is reflected by the first reflective curved surface 21 and the second reflective curved surface 22, passes through the transparent cover 30, and then exits the body 20. The transparent cover 30 can provide light transmission and waterproof functions to protect the LED 12 disposed on the lamp board 10 from damage. In other words, the condensing LED light source module 1 uses the light emitted by the LED 12 on the lamp board 10 through the reflective curved surface and the cup-shaped structure (high-reflectivity condensing and reflecting structure) with the upper width and the lower width. Concentration type and higher uniformity of light distribution.

In one embodiment, the body 20 further includes a U-shaped structure 27. The two ends of the U-shaped structure 27 are respectively connected to the first reflective curved surface 21 and the second reflective curved surface 22, and form an accommodation space 28 with the lamp board 10. The accommodating space 28 can be provided with a power supply and other electronic components, and related control circuits can also be configured in the accommodating space 28.

In one embodiment, the body 20 is made by an aluminum extruded process. Using aluminum as the material of the body 20 can make the condensing LED light source module 1 have a high thermal conductivity, so as to reduce the heat accumulation effect and improve the heat dissipation efficiency, and stabilize the luminous efficiency of the LED 12.

Please refer to the third and fourth figures at the same time. The design of the curve equation of the first curved surface 21 on the first curve C1 along the AA cross section and the design of the curve equation of the second reflective curved surface 22 on the second curve C2 along the AA cross section can make the convergence The light emitted by the LED 12 in the light-type LED light source module 1 exits the body 20 at a predetermined light emission angle θ. In one embodiment, the light emission angle θ is 70˚±10˚. In the following, the parameter value is designed for the first curve C1 and the second curve C2 using the light emission angle θ as 70˚±10˚ as the target value of the planned light output.

In this embodiment, the curve equation of the first curve C1 of the first reflective curved surface 21 along the AA section is y ₁ = a ₁ x ₁ ² + b ₁ , and the second reflective curved surface 22 is along the AA section The curve equation of the second curve C2 of y ₂ = a ₂ x ₂ ² + b ₂ . Where x ₁ is the horizontal distance of the first curve C1 relative to the optical axis O of the LED 12, y ₁ is the vertical distance of the first curve C1 relative to the optical axis O of the LED 12, and x ₂ is the second curve C2 relative to the LED The horizontal distance of the optical axis O of 12, y ₂ is the vertical distance of the second curve C2 relative to the optical axis O of the LED 12. That is, the plurality of LEDs 12 can be set at the y-axis position in the coordinate of the first curve C1 and at the y-axis position in the coordinate of the second curve C2. In detail, the LED 12 can be set at the origin (0, 0) in the common coordinates of the first curve C1 and the second curve C2, and the optical axis O of the LED 12 coincides with the y-axis in the coordinates. Among them, the first curve C1 is symmetrical to the second curve C2 with the optical axis O (ie, the y-axis). At this time, in the curve equations of the first curve C1 and the second curve C2, a ₁ = a ₂ and b ₁ = b ₂ .

The above-mentioned condensing LED light source module 1 is applied in a three-dimensional hydroponic vegetable cultivation environment, and the condensing LED light source module 1 is designed to be 30 to 35 cm from the plant leaf surface, and the arrangement interval of each LED 12 is 20 to 25 cm. Under this condition, when b ₁ =b ₂ =-2, a ₁ =a ₂ and 0.08, 0.09, and 0.1 respectively, the different light-emitting angle θ of the LED and the coordinates of the lowest point P _L of the first curve C1 ( The coordinates of x _L , y _L ) and the highest point P _H (x _H , y _H ) are listed in Table 1 below.

Table 1: The different light emitting angles θ of the LEDs correspond to the coordinate values of the lowest point P _L and the highest point P _H of the first curve C1.

As can be seen from Table 1, when the curve equation of the first curve C1 satisfies y ₁ =a ₁ x ₁ ² +b ₁ , and b ₁ =-2, a _{1 is} between 0.08~0.1, the lowest value of the first curve C1 x-coordinate of the point P _L x 6.5 _L, P _H of the highest point of the coordinate x _H x is between 12.4 and 17.3, this time concentrating LED light module 1 can 70˚ ± 10˚ emitting angle θ is emitted in Body 20. Similarly, since the first curve C1 is symmetrical to the second curve C2 with the optical axis O (ie, the y-axis), and in the curve equations of the first curve C1 and the second curve C2, a ₁ = a ₂ and b ₁ = b ₂ Therefore, the x coordinate x _L of the lowest point P _L of the second curve C2 is -6.5, and the x coordinate x _{H of the} highest point P _H is between (-12.4)~(-17.3), which will not be repeated here.

According to the above embodiment, under the same conditions, when a ₁ = a ₂ and 0.08, 0.09, and 0.1 respectively, the different light-emitting angles θ of the LEDs correspond to the b ₁ value of the curve equation of the first curve C1 listed in the table below two.

Table 2: Different light-emitting angles θ of LEDs and the b ₁ value of the curve equation corresponding to the first curve C1.

It can be seen from Table 2 that when the curve equation of the first curve C1 satisfies y ₁ =a ₁ x ₁ ² +b ₁ , and a _{1 is} between 0.08~0.1, b ₁ can be between -2~2, At this time, the condensing-type LED light source module 1 can project out of the body 20 with a light emitting angle θ of 70˚±10˚. Similarly, since the first curve C1 is symmetrical to the second curve C2 with the optical axis O (ie, the y-axis), and in the curve equations of the first curve C1 and the second curve C2, a ₁ = a ₂ and b ₁ = b ₂ Therefore, b _{2 of the} second curve C2 is between -2 and 2, and will not be repeated here.

In other embodiments, the first curve C1 may be asymmetric to the second curve C2, and in the curve equations of the first curve C1 and the second curve C2, a ₁ may not be equal to a ₂ or b ₁ may not be equal to b ₂ , that is, That is to say, the curve equations of the first curve C1 and the second curve C2 may be different, or the positions of the lowest points _{PL of the} first curve C1 and the second curve C2 may be different, and the user may have different parameters according to their needs. The design is not limited to those listed.

According to the design of the parameters in the curve equations of the first curve C1 and the second curve C2, the first reflective curved surface 21 and the second reflective curved surface 22 have a specific curvature and a high reflectivity (the reflectivity is, for example, >85%) ), the LED 12 is focused and reflected by the first reflective curved surface 21 and the second reflective curved surface 22, and then emitted at a specific light emitting angle θ. In a simulation experiment, the design of the light-concentrating light source module 1 through the first reflective curved surface 21 and the second reflective curved surface 22 can maintain the luminous intensity at a distance of 35 cm from the irradiation plane of 2800 lux (lux) , And the light distribution uniformity (illuminance uniformity) can reach more than 75%.

The light-concentrating LED light source module 1 can also be matched with the wavelength range of different LEDs 12 to adjust the distribution of the light spectrum, so that it has flexibility in practical applications. In one embodiment, the plurality of LEDs 12 include blue light with a wavelength range of 400-500 nm and red light with a range of 650-700 nm, wherein the ratio of blue light to red light is 0.35:1 or 1:0.45. In addition, it has a wavelength of 550 nm generated by phosphors to form a beam similar to white light.

The light-concentrating LED light source module proposed in the present disclosure can design a specific spectrum, light-condensing/reflecting structure for plant cultivation needs, and reduce the heat transfer path of the LED chip, etc., so that the LED light source module has a spectrum corresponding to plant photosynthesis and improves The light intensity of the light receiving surface and the uniformity of light distribution, as well as the advantages of reducing power consumption.

However, the specific embodiments described above are only used to illustrate the features and effects of this disclosure, not to limit the scope of implementation of this disclosure. Any application without departing from the spirit and technical scope of this disclosure The equivalent changes and modifications made by the disclosure of this disclosure shall still be covered by the following patent application scope.

1: Condensing light-emitting diode light source module 10: lamp board 12: light-emitting diode 20: body 21: first reflective curved surface 211: first end 212: third end 213, 223: concave surface 22: second Reflecting curved surface 221: second end 222: fourth end 23: first engaging portion 24: second engaging portion 25: third engaging portion 26: fourth engaging portion 27: U-shaped structure 28: accommodating space 30: Transparent cover C1: First curve C2: Second curve O: Optical axis P _L : lowest point P _H : highest point

The first figure is a schematic structural view of an embodiment of the disclosed condensing LED light source module. The second figure is a schematic view along the A-A cross section of one embodiment of the disclosed condensing LED light source module. The third figure is a light path diagram along the A-A cross section of one embodiment of the disclosed condensing LED light source module. The fourth figure is a schematic diagram of the coordinates along the A-A section of one embodiment of the disclosed condensing LED light source module.

1: Condensing light-emitting diode light source module

10: light board

12: LED

20: Ontology

21: first reflective surface

211: The first end

212: third end

213, 223: concave

22: Second reflective surface

221: Second end

222: fourth end

23: The first engaging part

24: Second engagement part

25: Third engagement part

26: Fourth engaging part

27: U-shaped structure

28: accommodating space

30: Transparent cover

C1: the first curve

C2: second curve

Claims (14)

A condensing light-emitting diode (LED) light source module, comprising: A lamp board suitable for setting a plurality of LEDs; and a body having a first reflective curved surface and a second reflective curved surface disposed oppositely, the body is provided with a first engagement at a first end of the first reflective curved surface A second end of the second reflective curved surface is provided with a second engaging portion, the lamp board is fixed by the first engaging portion and the second engaging portion, and is fixed on the first reflective curved surface and Between the second reflective curved surfaces, the light rays emitted by the LEDs are reflected by the first reflective curved surface and the second reflective curved surface, and then exit the body. The concentrating LED light source module as described in item 1 of the patent application scope, wherein a first curve of the first reflective curved surface on a cross-section conforms to a first curve equation; the second reflective curved surface is on the cross-section A second curve of is in accordance with a second curve equation. The condensing LED light source module as described in item 1 of the patent application scope further includes a transparent cover plate, and the arrangement of the lamp board and the transparent cover plate enables the condensing LED light source module to have Cup-shaped structure with a wide width and a narrow width. The concentrating LED light source module as described in item 2 of the patent application scope, wherein the first curve is symmetrical to the second curve with the optical axis. The concentrating LED light source module as described in item 2 of the patent application scope, wherein the first curve equation is y ₁ = a ₁ x ₁ ² + b ₁ , and x _{1 is} the first curve relative to the LEDs The horizontal distance of an optical axis, y _{1 is} the vertical distance of the first curve relative to the optical axes of the LEDs, and a ₁ and b ₁ are real numbers. The concentrating LED light source module as described in item 4 of the patent application scope, wherein the second curve equation is y ₂ = a ₂ x ₂ ² + b ₂ , and x _{2 is} the second curve relative to the LEDs The horizontal distance of the optical axis, y _{2 is} the vertical distance of the second curve with respect to the optical axes of the LEDs, and a ₂ and b ₂ are real numbers. The concentrating LED light source module as described in item 5 of the patent application scope, wherein in the first curve equation of the first curve, a _{1 is} between 0.08~0.1 and b _{1 is} between -2~2 between. The concentrating LED light source module as described in item 6 of the patent application scope, wherein in the second curve equation of the second curve, a _{2 is} between 0.08~0.1 and b _{2 is} between -2~2 between. The concentrating LED light source module as described in item 5 of the patent application scope, wherein the second curve equation is y ₂ = a ₂ x ₂ ² + b ₂ , and x _{2 is} the second curve relative to the LEDs The horizontal distance of the optical axis, y _{2 is} the vertical distance of the second curve relative to the optical axes of the LEDs, a ₂ and b ₂ are real numbers, a ₁ = a ₂ and b ₁ = b ₂ . The concentrating LED light source module as described in item 5 of the patent application scope, wherein the LEDs are arranged at a y-axis position in a first curve coordinate and at a y-axis position in a second curve coordinate . The concentrating LED light source module as described in item 1 of the patent application scope further includes a transparent cover plate, the body is provided with a third engaging portion at a third end of the first reflective curved surface, and the second reflection A fourth engaging portion is provided at a fourth end of the curved surface, and the transparent cover is fixed and disposed on the first reflective curved surface and the second reflective curved surface by the third engaging portion and the fourth engaging portion In the meantime, the light rays emitted by the LEDs are reflected by the first reflective curved surface and the second reflective curved surface, then pass through the transparent cover plate and exit the body. The concentrating LED light source module as described in item 1 of the patent application scope, wherein the body further includes a U-shaped structure, and the U-shaped structure forms an accommodating space with the lamp board. The concentrating LED light source module as described in item 1 of the patent application scope, wherein the system is made by an aluminum extrusion process. The concentrating LED light source module as described in item 1 of the patent application scope, wherein the LEDs include a blue light with a wavelength range of 400-500 nm and a red light with a range of 650-700 nm. The ratio of red light is 0.35:1 or 1:0.45.

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