LED Plant Cultivation Lamp with Multiple Light Distribution Angles

Abstract

The present invention relates to an LED plant cultivation light having multiple beam angles, characterized by comprising: an optical system having a single central axis; an LED channel in which LEDs are arranged based on the central axis of an LED located in the same cross-section as the central axis of the optical system; and a multi-LED channel composed of two or more LED channels with different distances between the central axis of the optical system and the central axis of the LED.

Description

Technology Field

[0001] The present invention relates to an LED plant cultivation light having multiple beam angles, and more specifically, to a plant cultivation light having various beam angles for illuminating according to the growth stage and size of plants through an LED array having different optical axes in a lighting system composed of a single optical system. Background Technology

[0002] Conventional plant cultivation lights illuminate from a fixed position with a constant light distribution. Consequently, during the early stages of plant growth, the distance between the plant and the light source is significant, requiring the consumption of a large amount of power to supply an appropriate amount of light. If a condensing optical system with a narrowed beam angle is applied to address this, problems such as plant damage and quality degradation arise as the plant grows and becomes larger, leading to excessive light intensity and heat. Furthermore, plants have a light saturation point at which photosynthesis ceases to increase once the amount of light reaches a certain level. Supplying light beyond this saturation point is unnecessary for plant growth, resulting in reduced energy efficiency. The problem to be solved

[0003] The present invention aims to provide a plant cultivation light that enables the implementation of various light distribution angles with a single light source, thereby allowing for the efficient supply of light according to the growth stage and height changes of plants. means of solving the problem

[0004] It is characterized by comprising: an optical system having a single central axis; an LED channel in which LEDs are arranged based on an LED central axis located in the same cross-section as the central axis of the optical system; and a multi-LED channel composed of two or more LED channels with different distances between the central axis of the optical system and the LED central axis.

[0005] In addition, the multi-LED channel comprises a first LED channel composed of LEDs arranged along a central axis at a distance D1 from the central axis of the optical system; a second LED channel composed of LEDs arranged along a central axis at a distance D2 from the central axis of the optical system; and an nth LED channel composed of LEDs arranged along a central axis at a distance Dn from the central axis of the optical system, wherein D1 ≠ D2 ≠ Dn is satisfied.

[0006] In addition, if the angle of light generated by the optical system for light projected from the first LED channel is θ1, the angle of light generated by the optical system for light projected from the second LED channel is θ2, and the angle of light generated by the optical system for light projected from the nth LED channel is θn, then it is characterized by satisfying θ1≠θ2≠θn. Effects of the invention

[0007] The LED plant cultivation light having multiple beam angles according to the present invention provides concentrated light to a specific area with a narrow beam angle during the early stages of plant growth using only a single light source, and as the plant grows, evenly distributes light according to the plant's growth stage with a wide beam angle, thereby having the effect of providing light suitable for various growth stages through beam angle adjustment without adjusting the lighting fixture. Brief explanation of the drawing

[0008] Figure 1 shows the distance between the light and the plant as the plant grows. Figure 2 shows the illumination of a plant by changing the light angle according to the plant's growth. Figure 3 shows a plan view composed of an optical system and a first LED channel. Figure 4 shows an optical path configured with an optical system and a first LED channel. Figure 5 shows a plan view composed of an optical system and a second LED channel. Figure 6 shows an optical path configured with an optical system and a second LED channel. FIG. 7 shows the configuration of an optical system and a multi-LED channel according to one embodiment of the present invention. FIG. 8 shows an optical path according to one embodiment of the present invention. FIG. 9 shows a modification according to one embodiment of the present invention. FIG. 10 shows a modification according to one embodiment of the present invention. Specific details for implementing the invention

[0009] Hereinafter, an embodiment of an LED plant cultivation light having multiple light distribution angles according to the present invention will be described with reference to the attached drawings.

[0010] In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0011] As shown in Fig. 1, as plants grow, the distance between the light source and the plant decreases. When the amount of light projected from the light source is the same, the amount of light shining on the plant increases in proportion to the square of the distance as the distance between the light source and the plant decreases. Therefore, as plants grow and their size increases, the distance between the light source and the plant decreases, causing a large amount of light to shine on a small area of ​​the plant and increasing the illuminance. Heat is generated by this light, leading to problems such as damage to the plant and deterioration of its quality. Furthermore, since the amount of light required for plant growth is fixed, shining more light than necessary is not effective for plant growth, resulting in problems of reduced plant growth and energy efficiency.

[0012] As shown in Fig. 2, as the plant grows, the beam angle of the light is widened so that the light can evenly illuminate a large area of ​​the plant, thereby enabling efficient lighting.

[0013] FIG. 3 shows a first LED channel (210) arranged based on the central axis of an LED that is 0 distance from the central axis of an optical system (100) according to one embodiment of the present invention, and as shown in FIG. 4, lighting having one beam angle is implemented.

[0014] FIG. 5 shows a second LED channel (220) arranged with respect to the center axis of an LED that is at a distance D from the center axis of an optical system (100) according to one embodiment of the present invention, and as shown in FIG. 6, lighting having one beam angle is implemented.

[0015] FIG. 7 shows that the LED plant cultivation light (10) having multiple light distribution angles according to one embodiment of the present invention is composed of a multi-LED channel (200) consisting of a first LED channel (210) and a second LED channel (220) arranged based on each center axis where the distance between the center axis of the optical system (100) and the center axis of the LED is different in one optical system (100).

[0016] More specifically, as shown in FIG. 8, the light from the first LED channel (210) and the light from the second LED channel (220) can have different light distribution angles when passing through the optical system (100). As a result, power consumption is reduced and an environment optimized for plant growth is provided by controlling the light distribution angle according to the plant's growth cycle.

[0017] FIG. 9 is a variation according to one embodiment of the present invention, wherein one LED channel may be configured by being arranged based on two or more central axes where the distance between the central axis of the optical system (100) and the central axis of the LED is different.

[0018] FIG. 10 is a variation according to one embodiment of the present invention, and may be composed of a multi-LED channel (200) consisting of a first LED channel (210) and a second LED channel (220) arranged based on the center axis of an LED that is different in distance from the center axis of the optical system (100) in the shape of a reflector.

[0019] Additionally, the optical system (100) has a symmetrical shape with respect to the central axis of the optical system (100), which can be configured as a circle, a hemisphere, or a cylindrical shape. Explanation of the symbols

[0020] 10: LED plant growing light with multiple beam angles 100: Optical system 200: Multi-LED Channel 210: 1st LED Channel 220: 2nd LED Channel

Claims

Claim 1 It is characterized by comprising: an optical system having a single central axis; an LED channel in which LEDs are arranged based on the central axis of an LED located in the same cross-section as the central axis of the optical system; and a multi-LED channel composed of two or more LED channels with different distances between the central axis of the optical system and the central axis of the LED. Claim 2 In claim 1, the multi-LED channel comprises a first LED channel composed of LEDs arranged along a central axis at a distance D1 from the central axis of the optical system; a second LED channel composed of LEDs arranged along a central axis at a distance D2 from the central axis of the optical system; and an nth LED channel composed of LEDs arranged along a central axis at a distance Dn from the central axis of the optical system, wherein D1 ≠ D2 ≠ Dn is satisfied, thereby providing an LED plant cultivation light having multiple beam angles. Claim 3 An LED plant cultivation light having multiple beam angles according to claim 1, wherein if the beam angle generated by the optical system for light projected from the first LED channel is θ1, the beam angle generated by the optical system for light projected from the second LED channel is θ2, and the beam angle generated by the optical system for light projected from the nth LED channel is θn, then θ1 ≠ θ2 ≠ θn is satisfied.

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