LED lamp applied to microalgae cultivation

Abstract

The utility model relates to the technical field of lighting lamps, in particular to an LED lamp applied to microalgae cultivation, which is characterized by comprising a lamp housing, a lamp panel and a lens, the lamp panel is mounted in the lamp housing, a light source for emitting light is mounted on the lamp panel, and the lens is mounted at an opening of the lamp housing and shields the lamp panel. Therefore, the light emitted by the light source is diffused, and the irradiation range of the light is expanded. The utility model has the advantages that the illumination uniformity is improved, and the exposure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting fixtures, and more particularly, to an LED lamp used for microalgae cultivation. Background Art

[0002] A suitable lighting environment has a positive impact on the reproduction, growth, and metabolism of aquatic organisms. Therefore, in aquaculture, configuring a specific lighting environment that corresponds to the growth and value-added of aquatic organisms is essential and is a development trend in modern industrial aquaculture technology.

[0003] In the existing technology, microalgae cultivation lamps are mainly composed of a light source, a cover plate, a lens, a shell, etc. The main body of the light source plate is a long strip of LED light source. Although it can basically meet the market demand in terms of function, there are still problems such as poor lighting uniformity and exposure because the lamp is close to the aquatic products. In addition, long-term use will increase the stress response of aquatic products and cause diseases that are not conducive to the growth of aquatic products. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an LED lamp for microalgae cultivation, which has the advantages of improving light uniformity and reducing exposure.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an LED lamp for microalgae cultivation, comprising:

[0006] Lamp housing, used for mounting foundation;

[0007] A light board is provided in the lamp housing and is used for mounting a light source;

[0008] A lens is arranged on the lamp housing and is used to diffuse the light emitted by the light source.

[0009] In one embodiment, the light source is a Lambert light source.

[0010] In one embodiment, the lens is provided with a mounting buckle, the lamp housing is provided with a corresponding mounting buckle position, and the mounting buckle is engaged with the mounting buckle position.

[0011] In one embodiment, a plurality of teeth are protruding from a side of the lens facing the light source, the plurality of teeth extend straight along the length direction of the lens, and the plurality of teeth are symmetrically arranged with respect to the light source.

[0012] In one embodiment, the teeth are Fresnel teeth.

[0013] In one embodiment, a light-emitting curved surface is provided on a side of the lens facing away from the light source to modify the propagation direction of the light.

[0014] In one embodiment, the lens is provided with two first side walls, and the two first side walls are symmetrically arranged with respect to the light source.

[0015] In one embodiment, the lens is further provided with two second side walls, the two second side walls are symmetrically arranged with respect to the light source, and the two second side walls are respectively connected to the first side walls on their corresponding sides.

[0016] In one embodiment, the lens is further provided with two third side walls, the two third side walls are provided between the two second side walls and are respectively connected to the second side walls on their corresponding sides, and the two third side walls are symmetrically arranged with respect to the light source;

[0017] The first side wall collects the light and refracts it onto the third side wall, and the second side wall refracts the light onto the second side wall, thereby modifying the propagation direction of the light.

[0018] In one embodiment, the lens is further provided with two fourth side walls, the first side wall is provided between the two fourth side walls, and the two fourth side walls are respectively connected to the first side walls on their corresponding sides;

[0019] The first side wall collects the light and refracts it onto the fourth side wall. The fourth side wall refracts the light onto the third side wall. The third side wall refracts the light onto the second side wall, thereby modifying the propagation direction of the light.

[0020] The above-mentioned LED lamp applied to microalgae cultivation has the following beneficial effects:

[0021] First, through precise lens design, light is evenly emitted in both directions, achieving multi-directional light control, improving uniformity on the illuminated surface, avoiding exposure problems, and reducing the impact of the light environment on microalgae;

[0022] Secondly, the light source is located between the two first side walls, which improves the utilization rate of the light source and enhances the lighting effect of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of embodiment 1;

[0024] Figure 2 This is a schematic diagram of the structural explosion of Example 1;

[0025] Figure 3 It is a side schematic diagram of embodiment 1;

[0026] Figure 4 is a schematic diagram of light reflection in Example 1;

[0027] Figure 5 It is a demonstration diagram of the law of light expansion;

[0028] Figure 6 This is a comparison diagram of the lighting effects of Example 1 and the prior art;

[0029] Figure 7 is a side schematic diagram of embodiment 2;

[0030] Figure 8 is a schematic diagram of light reflection in Example 2;

[0031] Figure 9 This is a comparison diagram of the lighting effects of Example 2 and the prior art.

[0032] In the figure: 1. lamp housing; 11. mounting buckle; 2. lamp board; 21. light source; 3. lens; 31. mounting buckle; 32. tooth; 33. light-emitting curved surface; 34. first side wall; 35. second side wall; 36. third side wall; 37. fourth side wall. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] Example 1

[0039] An LED lamp used in microalgae cultivation, such as Figures 1 to 3 As shown, the lamp comprises a lamp housing 1, a lamp panel 2, and a lens 3. The lamp panel 2 is mounted in the lamp housing 1. A light source 21 for emitting light is mounted on the lamp panel 2. The lens 3 is mounted at the opening of the lamp housing 1 to receive the light emitted by the light source 21, refract it, and evenly diffuse it. The position of the lens 3 corresponds to that of the light source 21. The material of the lens 3 can be glass, plastic, silicone, etc. In this embodiment, the lens 3 is made of acrylic.

[0040] Specifically, the light source 21 is a Lambertian light source 21 .

[0041] Specifically, such as Figure 3 As shown, the lens 3 is provided with a mounting clip 31, and the lamp housing 1 is provided with a corresponding mounting buckle 11. The mounting clip 31 engages with the mounting buckle 11, securing the lens 3 to the lamp housing 1. The size and position of the mounting clip 31 and the mounting buckle 11 should be considered to balance the forces. A stopper may be provided around the mounting buckle 11 to prevent the mounting clip 31 from loosening due to a loose connection. In this embodiment, the mounting clip 31 extends along the length of the lens 3.

[0042] Specifically, such as Figure 3As shown, a plurality of teeth 32 are protruding from one side of the lens 3 facing the light source 21 . The plurality of teeth 32 extend straight along the length direction of the lens 3 . The plurality of teeth 32 are symmetrically arranged about the light source 21 . The size and shape of the teeth 32 correspond to the direction in which the light needs to be diffused.

[0043] Furthermore, the teeth 32 are Fresnel teeth 32 , and the light entrance of the lens 3 is set as Fresnel teeth 32 symmetrical with respect to the light source 21 , so that the light is refracted and emitted evenly to both sides, thereby realizing multi-directional light control.

[0044] Further, if Figure 3 As shown, a light-emitting curved surface 33 is provided on the side of the lens 3 facing away from the light source 21 , which receives the light refracted by the Fresnel teeth 32 and refracts it evenly toward the illuminated surface. The curvature or bending degree of the light-emitting curved surface 33 should correspond to that of the Fresnel teeth 32 .

[0045] Working principle:

[0046] Based on the principle of conservation of light spread, most of the light emitted by the light source 21 is refracted into the lens 3. That is, the Fresnel teeth 32 and the light-emitting curved surface 33 realize the refraction and reflection of the light, thereby improving the uniformity of the illumination. The entire process satisfies the law of refraction of light:

[0047] n1 sinθ1=n2 sinθ2

[0048] θ1 and θ2 are the angle of incidence and angle of refraction, respectively. n1 is the refractive index of air, n2 is the refractive index of PMMA (1.49), and the luminous angle of the Lambertian light source 21 is 120°. The length and slope of the light entrance of lens 3 are controlled so that the angle of incidence of the light is between 0 and 79°. When light enters a denser medium from a less dense medium, the angle of incidence is greater than the angle of refraction. According to the law of refraction, the angle of refraction entering the interior of lens 3 is 0 < θ2 < 40.5°. The light from light source 21 that reaches both the light entrance and exit surfaces of lens 3 satisfies the law of light spread:

[0049] dU=n 2 dΣcosθdΩ

[0050] like Figure 5 As shown, dΣ is the area element, θ is the angle between the area element normal vector ndΣ and the central light, dΩ is the solid angle element of the light beam, and n is the refractive index of the transparent medium. In the same medium, the incident light from surface ε to surface s satisfies the law of conservation of light spread:

[0051] dU ε =dU S

[0052]

[0053] Light refraction effect Figure 4 As shown, the optical optimization effect is as follows Figure 6 As shown, part of the light is directed to both sides of the illuminated surface, which not only significantly improves the uniformity of illumination but also greatly reduces the exposure of the center.

[0054] Example 2

[0055] The difference between the second embodiment and the first embodiment lies in the shape of the lens 3. Specifically, Figure 7 As shown, the lens 3 is provided with two first side walls 34, which are symmetrically arranged about the light source 21. The two first side walls 34 are connected to each other to form a certain angle, enclosing the light source 21 between the two first side walls 34, thereby improving the utilization rate of the light source 21 and the lighting effect of the lamp.

[0056] Furthermore, if Figure 7 As shown, the lens 3 is further provided with two second side walls 35, which are connected to the first side wall 34, and the two second side walls 35 are symmetrically arranged with respect to the light source 21. In this embodiment, the two second side walls 35 have the same size and shape, and each is connected to the two first side walls 34 at a certain angle.

[0057] Furthermore, if Figure 7 As shown, the lens 3 is further provided with two third side walls 36, which are arranged between the two second side walls 35 and are respectively connected to the second side walls 35 on their corresponding sides. The two third side walls 36 are symmetrically arranged about the light source 21; the first side wall 34 collects the light and refracts it onto the third side wall 36, and the third side wall 36 refracts the light onto the second side wall 35, thereby modifying the propagation direction of the light.

[0058] Specifically, such as Figure 7 As shown, the lens 3 is further provided with two fourth side walls 37. The first side wall 34 is disposed between the two fourth side walls 37, and the two fourth side walls 37 are respectively connected to the first side walls 34 on their corresponding sides. The first side walls 34 collect light and refract it onto the fourth side walls 37. The fourth side walls 37 refract the light onto the third side wall 36, which refracts the light onto the second side wall 35, thereby modifying the propagation direction of the light. In this embodiment, the space between the two fourth side walls 37 and the two first side walls 34 is the solid body of the lens 3, not a cavity.

[0059] In this embodiment, if Figure 8 As shown, the light emitted by the light source 21 has multiple propagation paths, realizing multi-directional light control, so that the light is evenly emitted to both sides, achieving a high uniformity and non-exposure effect on the illuminated surface with a size of 400×1000 mm at a distance of 20 mm from the lamp, thereby reducing the impact of the light environment on the microalgae.

[0060] Working principle:

[0061] Based on the principle of conservation of light spread, most of the light emitted by the light source 21 is refracted into the lens 3, that is, received and refracted by the first side wall 34. The light is reflected by the edges of the second side wall 35, the third side wall 36, the fourth side wall 37 and the fifth side wall 38 with different slopes, thereby improving the uniformity of the illumination. The law of light refraction in the whole process is: n1 sinθ1 = n2 sinθ2

[0062] θ1 and θ2 are the angle of incidence and the angle of refraction respectively. n1 is the refractive index of air, n2 is the refractive index of PMMA, which is 1.49. According to the light source 21 being a Lambertian light source, the angle is 120°. Figure 3 As shown, the length and slope of the entrance of lens 3 are controlled so that the incident angle of light is between 0-79°. When light enters an optically denser medium from an optically rarer medium, the incident angle is greater than the refraction angle. According to the law of refraction, the refraction angle entering the interior of lens 3 is between 0<θ2<40.5°. The light from light source 21 to the incident surface and the light exit surface of lens 3 all satisfy the light spreading law:

[0063] dU=n 2 dΣcosθdΩ

[0064] like Figure 5 As shown, dΣ is the area element; θ is the angle between the area element normal vector ndΣ and the central light; dΩ is the solid angle element of the light beam; and n is the refractive index of the transparent medium.

[0065] For the same medium, the incident light from surface ε to surface s satisfies the law of conservation of light spread:

[0066] dU ε =dU S

[0067]

[0068] The side wall of lens 3 in the medium satisfies the law of reflection. The incident light is in air, and the refractive index of air is 1. The light is refracted into the PMMA lens 3, and the refractive index of lens 3 is 1.49, and the critical angle is obtained. The angle is approximately equal to 42°. When the light is reflected by the side wall and the exit angle is greater than the critical angle, the light will be totally reflected by the second side wall 35 and cannot be emitted. According to the law of refraction, in order to obtain an exit light with an angle of 164°-175°, the exit angle must be between 4.71° and 12°.

[0069] Optical optimization effects such as Figure 9 As shown, part of the light is directed to both sides of the illuminated surface, which not only significantly improves the uniformity of illumination but also greatly reduces the exposure of the center.

[0070] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An LED lamp used for microalgae cultivation, characterized in that: include: Lamp housing, used for mounting foundation; A light board is provided in the lamp housing and is used for mounting a light source; a lens, disposed on the lamp housing, for diffusing the light emitted by the light source; The lens is provided with a mounting buckle, and the lamp housing is provided with a corresponding mounting buckle position, and the mounting buckle is engaged with the mounting buckle position.

2. The LED lamp for microalgae cultivation according to claim 1, characterized in that: The light source is a Lambertian light source.

3. The LED lamp for microalgae cultivation according to claim 1, characterized in that: A plurality of teeth are protruding from a side of the lens facing the light source. The plurality of teeth extend straight along the length direction of the lens and are symmetrically arranged with respect to the light source.

4. The LED lamp for microalgae cultivation according to claim 3, characterized in that: The teeth are Fresnel teeth.

5. The LED lamp for microalgae cultivation according to claim 3, characterized in that: A light-emitting curved surface is provided on a side of the lens facing away from the light source to modify the propagation direction of the light.

6. The LED lamp for microalgae cultivation according to claim 1, characterized in that: The lens is provided with two first side walls, and the two first side walls are symmetrically arranged with respect to the light source.

7. The LED lamp for microalgae cultivation according to claim 6, characterized in that: The lens is further provided with two second side walls, which are symmetrically arranged with respect to the light source, and are respectively connected to the first side walls on their corresponding sides.

8. The LED lamp for microalgae cultivation according to claim 7, characterized in that: The lens is further provided with two third side walls, the two third side walls being provided between the two second side walls and respectively connected to the second side walls on their corresponding sides, and the two third side walls being symmetrically arranged with respect to the light source; The first side wall collects the light and refracts it onto the third side wall, and the second side wall refracts the light onto the second side wall, thereby modifying the propagation direction of the light.

9. The LED lamp for microalgae cultivation according to claim 8, characterized in that: The lens is further provided with two fourth side walls, the first side wall is provided between the two fourth side walls, and the two fourth side walls are respectively connected to the first side walls on their corresponding sides; The first side wall collects the light and refracts it onto the fourth side wall. The fourth side wall refracts the light onto the third side wall. The third side wall refracts the light onto the second side wall, thereby modifying the propagation direction of the light.

Images