CN107101121A - LED matrix - Google Patents

Abstract

The invention provides an LED device, comprising: an LED light source, a plurality of cooling fins and a fixing frame, wherein the fixing frame is used to fix the cooling fins, and the cooling fins are arranged at intervals, and the cooling fins are made of It is metal; the LED light source is arranged on the heat sink and toward the side of the center of the fixing frame. The LED device provided by the present invention has good heat dissipation effect, can adjust the light quality, light intensity and light cycle, improves the light energy utilization rate, can provide a better light environment for the biological cultivation that needs light, and can also shorten the biological cultivation cycle.

Description

LED device

technical field

The invention relates to the field of LEDs, in particular to an LED device.

Background technique

In recent years, in the field of biological cultivation, for example, microalgae cultivation has received widespread attention in the fields of food processing, aquaculture, medicine and beauty, bioenergy, and water environment restoration. The development of microalgae-related products has become an emerging technology industry, so it is used LED (Light Emitting Diode) devices in biological culture containers are also crucial. High-density cultivation of microalgae is a key link to increase the biomass production and active metabolites of microalgae, and to develop biomass energy.

Light is the most important environmental factor affecting the photosynthesis and growth of microalgae, including light intensity, light quality and photoperiod, which will affect the photosynthetic efficiency of microalgae. Under the light intensity in the tolerance range, the photosynthesis of microalgae will gradually strengthen with the increase of light intensity.

LED lamps have high electro-optical conversion efficiency. Unlike fluorescent lamps, LEDs generate less heat and can achieve low heat load supplementary light; LED light sources can also adjust light intensity, light quality and photoperiod according to the type and growth cycle of microalgae, so as to achieve the best cultivation effect. , to shorten the cultivation period.

However, the existing LED microalgae cultivation lamp mainly adopts plastic as the lamp holder, and the LED light source is pasted on the plastic lamp holder. Due to the low thermal conductivity of the plastic, the heat dissipation effect is poor, and the power of the cultivation lamp is only about ten watts. When the concentration of algae and the size of the culture container are large, the light generated by the low-power culture lamp is not enough to keep the microalgae culture in an optimal state.

Contents of the invention

(1) Technical problems to be solved

The object of the present invention is to provide an LED device to solve at least one of the above technical problems.

(2) Technical solution

The present invention provides an LED device, comprising: an LED light source, a plurality of heat sinks and a fixing frame, wherein,

The fixing frame is used to fix the heat sink, and the heat sinks are arranged at intervals, and the material of the heat sink includes metal;

The LED light source is arranged on the heat sink and faces one side of the center of the fixing frame.

Optionally, the fixing brackets may be two pairs of fixing brackets placed up and down opposite each other, the inner edges of which are fixed with the cooling fins.

Optionally, the LED device may also include: a driving power supply, a dimming controller and a timing module, wherein,

A driving power supply, electrically connected to the LED light source, for supplying power to the LED light source;

A dimming controller, electrically connected between the LED light source and the driving power supply, is used to adjust the light quality and light intensity of the LED light source, and the LED light source is an LED light source with adjustable light modes of three primary colors;

The timing module is electrically connected to the input end of the drive power supply and is used to control the illumination period of the LED light source.

Optionally, each pair of fixing frame combinations may be in the shape of a ring or a rectangular frame.

Optionally, the two pairs of fixing frames can be fixed by screws and nuts, one end of each pair of fixing frames is connected by a hinge, and the other end is connected by a buckle.

Optionally, the distance between two heat sinks on both sides of the buckle is greater than the distance between any other two adjacent heat sinks.

Optionally, notches may be provided on the opposite surfaces of the two pairs of fixing frames, for inserting and fixing the heat sinks.

Optionally, the heat sink may be a solid structure, or a hollow structure including a flat tube and at least one heat pipe.

Optionally, the flat tube can be a flat sealing body with upper and lower planes and a gap in the middle, and the material of the flat tube can be aluminum alloy, copper or stainless steel, and can be in the shape of a cuboid; Inside the flat tube, connecting the upper and lower tube walls of the flat tube and passing through both ends of the flat tube, the heat conduction sheet divides the inside of the flat tube into a plurality of cavities, and the inside of the cavity is filled with corresponding heat transfer liquid.

Optionally, aluminum foil or reflective paper may be arranged between adjacent heat sinks.

(3) Beneficial effects

Compared with the prior art, the present invention has the following advantages:

1. In the present invention, the heat sinks are arranged at intervals along the edge of the fixing frame to form a hollow structure, which can reduce the weight of the entire LED device; the biological culture container is placed in the center of the lamp, and the illumination is uniform and sufficient; and because the heat sink is made of metal Material, when the structure of flat tube and heat conducting sheet is adopted, the cavity of the flat tube is filled with phase-change heat conducting liquid, which can improve the heat extraction rate, so the LED device has a good heat dissipation effect, and the power of the lamp can be increased to more than 100W.

2. The present invention includes a circuit for regulating and controlling light, which can realize the dimming of LED lights to adapt to the light quality and light intensity required by different organisms, so as to realize different cultivation stages for different organisms, achieve the best cultivation effect, and shorten the cultivation time. cycle.

Description of drawings

1 is a schematic structural view of an LED device according to an embodiment of the present invention;

2 is a top view of an LED device according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a fixing frame according to an embodiment of the present invention.

detailed description

Generally speaking, the existing LED microalgae cultivation lamp system uses plastic as the lamp holder, but the LED light source pasted on the plastic generates a lot of heat, and the thermal conductivity of the plastic is low, so the existing LED system has poor heat dissipation effect. In view of this technical problem and other shortcomings, the present invention provides an LED device, which can be used in biological culture containers, and has the advantages of good heat dissipation, high power, adjustable light, and adjustable lighting cycle, thereby solving the problem of existing fluorescent lamps. The training lamp cannot be dimmed, the heat dissipation effect of the LED system of the plastic lamp frame is poor, and the power is low.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an LED device according to an embodiment of the present invention. As shown in Fig. 1, an embodiment of the present invention provides an LED device, including: an LED light source 1, a heat sink 2, and two pairs of fixing frames 3 placed up and down relative to each other. (The fixed frame is not limited to the fixed position in other embodiments).

The cooling fins 2 are arranged at intervals on the inner edge of the fixing frame 3 to form a hollow structure, and its material can be metal, and the metal can be aluminum, copper, stainless steel or other metals; the LED light source 1 is arranged on the cooling fin 2 and faces the fixing frame 3 One side of the center (in this embodiment, the LED light source 1 is selected to be pasted on the heat sink 2), the LED light sources 1 on two adjacent heat sinks 2 are connected in series with wires, and the fixing frame 3 is used to fix the heat sink 2. The material of the fixing frame 3 can be other plastics such as PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer), or metals such as aluminum and stainless steel. Each pair of fixed mounts 3 is combined in a ring shape, a rectangular frame shape or other shapes. In this embodiment, the ring-shaped fixed mount 3 is selected, and the heat sink 2 and the fixed mount 3 form a hollow cylinder, which is a hollow structure, which can The weight of the entire LED device is reduced, and at the same time, it can quickly dissipate heat through the external air, so it has a better heat dissipation effect.

The heat sink 2 can be a solid structure, or a hollow structure including a flat tube and at least one heat pipe. In this embodiment, the heat sink 2 is hollow. The flat tube is a flat sealing body with upper and lower planes and a gap in the middle. The material of the flat tube can be aluminum alloy, copper, stainless steel or other metals, and it is in the shape of a cuboid. , the thickness of the flat tube is 0.5-30mm, the width is 10-100mm, the length is 50-2000mm, and the wall thickness of the flat tube is 0.5-1mm. The heat conduction sheet is arranged inside the flat tube, connects the upper and lower tube walls of the flat tube and runs through both ends of the flat tube. The thickness of the heat conduction sheet is 1-5mm, and the cavity width between adjacent heat conduction sheets is 0.5mm. ~5mm. At least one heat conducting sheet divides the inside of the flat tube into multiple cavities, and the inside of the cavities is filled with a phase change heat conducting liquid. When the LED light source 1 is working, the phase-change heat-conducting liquid inside the heat sink 2 undergoes a high-intensity boiling phase change when heated, and quickly removes the heat generated by the LED light source 1, and transfers it to the other surface opposite to the heat sink 2 pasting the light source. The surface of sheet 2 convects heat with the surrounding air and dissipates it into the environment. The high-intensity boiling phase change will greatly improve the heat dissipation performance of LED lamps. While increasing the power of the cultivation lamp, it will reduce the light decay of the light source, prolong the service life of the light source, and ensure the operational reliability of the lamp.

In addition, aluminum foil or reflective paper can also be pasted between adjacent heat sinks 2 to improve the utilization rate of light energy of the LED light source 1 .

According to an embodiment of the present invention, the LED device further includes: a driving power supply, a dimming controller and a timing module. The driving power supply is connected to a plurality of LED light sources 1 connected in series with electric wires to realize electrical connection and is used to supply power to the LED light sources 1; the dimming controller is connected between the LED light source 1 and the driving power supply to realize Electrically connected, used to adjust the light quality and light intensity of the LED light source 1, and the LED light source 1 is an adjustable LED light source 1 in the three primary color light mode RGB (three primary color light mode); the timing module is connected to the input end of the driving power supply are connected to realize electrical connection, and are used to control the light cycle of the LED light source 1 . Through the light regulating circuit of the present invention, the dimming of high-power LED lamps can be realized to adapt to the light quality and light intensity required by different organisms, so as to achieve different cultivation stages for different organisms and achieve the best cultivation effect. Shorten the breeding cycle.

Fig. 2 is the top view of the LED device of the embodiment of the present invention, as shown in Fig. 2, in this embodiment, each fixing frame 3 adopts semi-circular shape (other shapes can be selected in other embodiments), and the combination of two pairs is Ring-shaped, the upper and lower pairs of fixing frames 3 and the cooling fins fixed between the fixing frames 3 are in the shape of a hollow cylinder. Dig a plurality of small holes on the relative surfaces of the upper and lower pairs of fixed mounts 3, and fix the upper and lower pairs of fixed mounts 3 through the small holes with screws and nuts. The distance between the two pairs of fixed mounts 3 is 100-2000mm. In addition, one end of each pair of fixing brackets 3 can be connected by a hinge 4, so that two groups of fixing brackets 3 can be rotated around the rotation axis of the hinge 4, so that a pair of fixing brackets 3 on the same surface can move relatively freely separately. , to form an angle (maximum obtuse angle), so as to realize the opening and closing of the lamp holder. In this way, the biological culture container can be placed or taken out relatively easily. The other end can be connected by the hasp 5, when the hasp 5 is closed, each pair of fixed mounts 3 above and below forms a closed ring shape, and the fixed mounts 3 are tightly locked together; when the hasp 5 is loosened, Each pair of fixed mounts 3 can rotate around the rotation axis of the hinge 4, and each pair of fixed mounts 3 are separated so as to place or take out the biological culture container. Wherein, the hasp 5 and the hinge 4 pass through the small holes and are fixed on the fixed frame 3 with screws. In addition, more preferably, the distance between the two heat sinks near the two sides of the buckle 5 can be set to be greater than the distance between any other two adjacent heat sinks, so that the connecting lines of the LED device and the pipelines of the culture container can also be more convenient and fast. Place or take out the biological culture container. In this example. Because each set of fixing frames 3 is combined in a ring shape, the cooling fins 2 are arranged in a circle between the upper and lower fixing frames 331, and the angle between the centers of two adjacent cooling fins is 5°-30°.

Fig. 3 is the structural representation of the fixed mount 3 of the embodiment of the present invention, as shown in Figure 3, on the opposite surface of two groups of fixed mounts 3, be provided with the notch 33 of cuboid (in other embodiments, notch 33 also can be Other shapes), the length of the notch 33 can be 10.5-100.5mm, the width can be 1-30.5mm, and the depth can be 1-25mm, which is used for inserting and fixing the heat sink. In addition, the screw and the nut pass through the small hole 34 to fix the upper and lower pairs of fixed frames 3 , the buckle is fixed on the fixed frame 3 through the small hole 36 , and the hinge is fixed on the fixed frame 3 through the small hole 35 .

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention.

Claims (10)

1. a kind of LED matrix, including：

LED/light source, multiple fin and fixed mount, wherein,

The fixed mount is used to fix to be spaced between the fin, and each fin, and the fin material includes gold Category；

The LED/light source is set on a heat sink, and towards the side at fixed mount center.

2. LED matrix according to claim 1, wherein, the fixed mount is about two pairs fixed mounts staggered relatively, its Inside edge is fixed with the fin.

3. LED matrix according to claim 1, wherein, in addition to：Driving power supply, light adjusting controller and time block, its In,

Driving power supply, is electrically connected with the LED/light source, for being powered for LED/light source；

Light adjusting controller, is electrically connected between the LED/light source and driving power supply, light quality and light for adjusting LED/light source By force, and the LED/light source be the adjustable LED/light source of primaries pattern；

Time block, is electrically connected with, the periodicity of illumination for controlling LED/light source with the input of the driving power supply.

4. LED matrix according to claim 2, wherein, the combination of each pair fixed mount is in circular or rectangular box-like.

5. LED matrix according to claim 2, wherein, fixed between two pairs of fixed mounts by screw rod and nut, each pair is solid The one end for determining frame is connected through the hinge, and the other end passes through hasp connection.

6. LED matrix according to claim 5, wherein, the spacing of the two panels fin of hasp both sides is any more than other The spacing of two panels abutting fins.

7. LED matrix according to claim 2, wherein, notch is provided with the relative surface of two pairs of fixed mounts, is used for The fixed fin of inserting.

8. LED matrix according to claim 1, wherein, the fin is solid construction, or is to include flat tube and extremely The hollow-core construction of a few heat conducting pipe.

9. LED matrix according to claim 8, wherein, the flat tube is two planes and there is space centre above and below having The seal of flat, the flat tube material is aluminium alloy, copper or stainless steel, in rectangular-shape；The thermally conductive sheet is arranged at institute State inside flat tube, connect the tube wall up and down of the flat tube and through the flat tube two ends, the thermally conductive sheet is by inside the flat tube Multiple cavitys are separated into, the cavity inside is filled with heat conduction with phase change liquid.

10. LED matrix according to claim 1, wherein, aluminium foil or reflective sheeting are provided between adjacent fin.