CN205227030U - Dull and stereotyped light source of LED for vegetation - Google Patents

Abstract

The utility model provides an LED flat panel light source for plant growth, which comprises a side frame, a substrate, a fluorescent powder layer and a light-transmitting plate are sequentially arranged on the inner side of the side frame from top to bottom, and a plurality of LED light-emitting panels are arranged on the lower surface of the substrate. The chip; the phosphor layer is arranged on the light-transmitting plate, and the structure of the phosphor layer is an organic film uniformly mixed with phosphor; the light-transmitting plate is a light-transmitting glass plate. An anti-ultraviolet coating is provided on the upper surface of the substrate, and the anti-ultraviolet coating is a titanium dioxide coating. The substrate is a glass plate. Compared with the prior art, the utility model has the performance advantages of good heat dissipation performance, large irradiation area, uniform and consistent light emission, and production personnel can produce light quality and energy requirements and actual irradiation area required for different plant growth. A variety of plant-specific LED flat light sources to achieve the purpose of promoting plant growth. At the same time, the structural design of double-layer glass enhances the device's ability to resist environmental erosion and improves the reliability of the light source.

Description

LED flat light source for plant growth

technical field

The utility model relates to an LED flat light source, in particular to an LED flat light source for plant growth.

Background technique

LED light source for plants is a high-tech new product that has emerged along with LED white light lighting in the past five years. Compared with other light sources such as cool white fluorescent lamps, high-pressure sodium lamps, and metal halide lamps, it can more effectively convert light energy into photosynthetically active Radiation, produce better plant lighting effects; it also has the advantages of long life, small size, light weight and solid state. In addition, studies have shown that LED lighting systems can provide lighting with uniform spectral energy distribution, and the efficiency of converting electrical energy into light required by plants is more than 520 times that of metal halide lamps. Therefore, LED light sources have been vigorously promoted in space plant cultivation.

After application testing, the LED light source for plants is very suitable for the growth, flowering and fruiting of plants. Blue light with a wavelength range of 400-510nm in visible light has the largest absorption ratio of chlorophyll and carotenoids and has the greatest impact on photosynthesis; red light with a wavelength range of 610-720nm has a low chlorophyll absorption rate and has a significant impact on photosynthesis and photoperiod effects. However, if it is 315-400nm light, it will cause the plant's chlorophyll to absorb less, affect the photoperiod effect, and prevent the stem from elongating. Generally, indoor plants and flowers will grow worse and worse over time due to the lack of natural light, and by using LED light sources for plants that use the spectrum (light quality combination) required by plants, it can not only promote their growth, but also prolong their growth. Flowering, improve the quality of flowers. Applying this high-efficiency light source system to agricultural production facilities such as greenhouses and greenhouses, on the one hand, it can solve the disadvantages of the decline in the taste of greenhouse vegetables such as tomatoes and cucumbers caused by insufficient sunlight, and on the other hand, it can also make solanaceous fruits in greenhouses in winter Vegetables are put on the market around the Spring Festival in advance to achieve the purpose of off-season cultivation.

However, the existing LED lights that emit red and blue light bands are slow in promoting the growth rate of plants, and the effect is not obvious. Moreover, due to the high temperature during the irradiation process, the heat dissipation device cannot effectively dissipate the heat of the light source, which may burn the plants. , At the same time, it will also reduce the luminous efficiency of the light source itself, affecting the life of the entire LED lamp. Chinese invention patent CN201210018869.X discloses an LED plant growth downlight, which includes a lamp housing, a driving power supply installed in the cavity of the lamp housing, an LED light source and a radiator. The LED light source includes an aluminum substrate and a plurality of LED lamp beads, a plurality of LED lamp beads are a plurality of red LED lamp beads and a plurality of blue LED lamp beads with a quantity ratio of 7:3, and the main peak of the light emitted by the red LED lamp beads and the blue LED lamp beads is 370~390nm, the aluminum substrate is set close to one end of the radiator, and there are multiple cooling holes on the lamp housing. The light irradiation of the device can greatly increase the growth rate of algae plants, and has good heat dissipation performance and long service life, but its structure is comparatively complicated. Chinese utility model patent CN201220481410.9 discloses an LED panel lamp, which includes a lamp holder, a lamp trough, a light-transmitting plate, and an LED light source module. The light source module is placed in the light trough, and the light-transmitting plate is covered on the surface of the light trough. This device has the technical advantages of simple structure, good heat dissipation and high brightness. It is also convenient to use, install and maintain, but the light output of this light source is uneven. , the consistency is poor, and it cannot meet the requirements of plant growth on the quality of the light source.

Utility model content

The purpose of the utility model is to provide a flat LED light source for plant growth to solve the problem of uneven light output in the existing LED light source for plants.

The utility model is achieved in that:

An LED flat panel light source for plant growth, comprising a side frame, a substrate, a phosphor layer and a light-transmitting plate are sequentially arranged inside the side frame from top to bottom, and several LED light-emitting chips are arranged on the lower surface of the substrate The fluorescent powder layer is arranged on the light-transmitting plate, and the structure of the fluorescent powder layer is an organic film uniformly mixed with fluorescent powder that can cooperate with the LED light-emitting chip to produce the spectrum required for plant growth; The light plate is a light-transmitting glass plate.

An anti-ultraviolet coating is provided on the upper surface of the substrate, and the anti-ultraviolet coating is a titanium dioxide coating.

The substrate is a glass plate.

The utility model comprises a side frame, and a substrate, a fluorescent powder layer and a light-transmitting plate are sequentially arranged inside the side frame from top to bottom, and a plurality of LED light-emitting chips are arranged on the lower surface of the substrate, and the LED light-emitting chips are plants The core component of the LED flat light source for growth converts electrical energy into light energy. The LED light source is a cold light source without infrared and ultraviolet radiation, which will not cause damage to the health of the staff. The fluorescent powder layer is arranged on the light-transmitting plate, and the structure of the fluorescent powder layer is an organic film uniformly mixed with fluorescent powder that can cooperate with the LED light-emitting chip to produce the spectrum required for plant growth. Different growth periods and different plant species need to be equipped with different ratios of phosphors. The substrate is a glass plate, which has good heat dissipation performance, and no additional heat dissipation device is needed.

In the utility model, an anti-ultraviolet coating is arranged on the upper surface of the substrate, and the anti-ultraviolet coating is a titanium dioxide coating. The titanium dioxide coating can effectively shield the external ultraviolet rays, prevent the ultraviolet rays from damaging the LED light-emitting chips inside the device, and prolong the service life of the LED light-emitting chips.

The utility model has the advantages of simple structure, low cost, convenient installation and maintenance, good heat dissipation performance, large irradiated area, uniform and consistent light output, and the production personnel can adjust the light quality and energy according to the light quality and energy requirements of different plants. The actual irradiated area produces a variety of plant-specific LED flat light sources, so as to achieve the scientific ratio of absorption spectrum wavelength and light intensity for different types of plants, so as to achieve the purpose of promoting plant growth. At the same time, the structural design of double-layer glass enhances the device's ability to resist environmental erosion and improves the reliability of the light source.

Description of drawings

Fig. 1 is a structural representation of the utility model.

In the figure: 1. Side frame; 2. Substrate; 3. Phosphor powder layer; 4. Light-transmitting plate; 5. Anti-ultraviolet coating; 6. LED light-emitting chip.

detailed description

As shown in FIG. 1 , the utility model includes a side frame 1 , and a substrate 2 , a phosphor layer 3 and a light-transmitting plate 4 are sequentially arranged inside the side frame 1 from top to bottom. In this embodiment, the side frame 1 is a rectangular frame surrounded by four side panels of the same height, and the lower edges around the base plate 2 and the light-transmitting plate 4 are closely attached to the inner surface of the side frame 1 . The substrate 2 is made of a glass plate, and several LED light-emitting chips 6 are arranged on the lower surface of the substrate 2. The LED light-emitting chips 6 provide excitation light sources. Powder layer 3 is the purpose. As an optimized solution of this embodiment, an anti-ultraviolet coating 5 can be provided on the upper surface of the substrate 2 to shield the external ultraviolet rays, thereby effectively preventing the ultraviolet rays from damaging the LED light-emitting chips 6 inside the device. The anti-ultraviolet coating 5 can be a titanium dioxide coating, and other coatings with the same effect in the prior art can also be selected for use.

As shown in Figure 1, the light-transmitting plate 4 is a light-transmitting glass plate, and the phosphor layer 3 is arranged on the light-transmitting plate 4. The organic film of the fluorescent powder of the spectrum, and the light-transmitting plate 4 is a light-transmitting glass plate. In this embodiment, the organic film adopts EVA film or PVB film, and the phosphor powder in the phosphor powder layer 3 has different proportions according to the light quality and energy required by different plants. According to the light quality and energy requirements for different plant growth and the actual irradiation area, a variety of plant-specific LED flat light sources can be produced. For example, because the light intensity ratio of red light and blue light required for the growth of lettuce is 4:1, for Lettuce sets the fluorescent powder in the fluorescent powder layer 3 in the LED flat light source to cooperate with the LED light-emitting chip 6 to produce a fluorescent powder with a ratio of red light and blue light of 4:1; The ratio is 5:1. For strawberries, the phosphor powder in the phosphor layer 3 in the LED flat light source is set to cooperate with the LED light-emitting chip 6 to produce a phosphor powder with a red light and blue light ratio of 5:1; for most plants, the LED flat panel The phosphor powder in the phosphor powder layer 3 in the light source is set to cooperate with the LED light-emitting chip 6 to generate phosphor powder with a ratio of red light to blue light of 8:1.

When in use, select a dedicated LED flat light source suitable for plant types, connect to an external power supply, and provide the light quality and energy required for normal growth of plants by controlling light intensity and irradiation time, thereby accelerating plant growth and shortening plant life. growth cycle.

Claims (3)

1. A LED panel light source for plant growth, comprising a side frame, characterized in that a substrate, a fluorescent powder layer and a light-transmitting plate are sequentially arranged on the inboard of the side frame from top to bottom, and on the lower surface of the substrate Several LED light-emitting chips are arranged; the phosphor layer is arranged on the light-transmitting plate, and the light-transmitting plate is a light-transmitting glass plate. 2 . The LED flat light source for plant growth according to claim 1 , wherein an anti-ultraviolet coating is provided on the upper surface of the substrate, and the anti-ultraviolet coating is a titanium dioxide coating. 3. The LED flat panel light source for plant growth according to claim 1, wherein the substrate is a glass plate.