CN203674209U - Integrated drive LED light source - Google Patents

Abstract

The utility model provides an integrated drive LED light source comprising a PCB, LED chips and a radiator attached to the bottom of the PCB. The LED chips include high voltage blue chips and a red chip, which are arranged on the PCB in a way of area segmentation. The area ratio of the red chip and the blue chip is 1:4. Yellow fluorescent powder is encapsulated on the high voltage blue chips. Prisms are respectively arranged on two ends of the PCB. The radiator comprises an upper cooling plate and a lower ventilation plate, wherein the cooling plate is fixed on the ventilation plate. According to the utility model, through cooperation of the high voltage blue chips, the red chip and the yellow fluorescent powder, three colors of red, yellow and blue are combined organically, reaching an effect of warm white light, thereby improving color rendering. In addition, through adjusting the proportion of the red chip and the blue chips, white light saturation is adjusted.

Description

Integrated drive LED light source

technical field

The utility model belongs to the technical field of LED light sources, and in particular relates to an integrated driving LED light source.

Background technique

At present, the world's energy shortage has caused countries to attach great importance to energy-saving technologies. While vigorously developing renewable and clean energy such as solar energy and wind energy, countries are also increasing their efforts in rational and effective use of energy. Reflected in lighting is the continuous innovation and wide application of various new light sources. Among them, light-emitting diodes have attracted more and more attention due to their low energy consumption, high luminous efficiency, long life and high reliability, and have been gradually applied to the lighting field.

In the prior art, the main method of realizing high-power planar white light source is to excite yellow phosphor powder by blue light or near-ultraviolet chip, especially the packaging of multi-chip basic light source substrate. There are still several deficiencies in this packaged light source. The reason is that the color rendering of the light source is not very good, especially when the lighting products are used in places where the crowds are concentrated, it will cause defects in the use of the light source. Although many companies try to obtain high color rendering by mixing red phosphors, But at the cost of sacrificing a certain light efficiency; second, the light efficiency of the integrated chip light source is not high enough, and the light decay phenomenon is serious, which will bring defects in the use of lighting products, which is not conducive to wide application; third, the existing white LED The emitted light mainly extends along the top of the semiconductor chip and around the semiconductor chip, wherein the light above the semiconductor chip is useful light, and the light around the semiconductor chip is not actually used, which causes the phenomenon of light leakage that is often said by those skilled in the art, and light leakage will cause Light source loss.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a high-voltage integrated drive LED light source with high light efficiency and excellent color rendering.

The purpose of this utility model is achieved through the following technical solutions:

Integrated drive LED light source, including PCB board, LED chip and radiator mounted on the top of PCB board, the LED chip is composed of high-voltage blue light chip and red light chip, the red light chip and high-voltage blue light chip are arranged in the form of area division Distributed on the PCB board, the area ratio of the area of the red light chip and the area of the high-voltage blue light chip is 1:4, and the yellow phosphor powder is packaged on the high-voltage blue light chip;

The two ends of the PCB board are respectively provided with prisms, and the prisms are composed of a transparent light-incoming surface, a transparent light-returning surface perpendicular to the light-incoming surface, and a reflective surface arranged at an acute angle with the light-incoming surface. Also vertically fixed on the radiator;

The radiator includes a heat dissipation plate on the upper part and a ventilation plate on the lower part, the heat dissipation plate is fixed on the ventilation plate, and a plurality of heat dissipation through holes are evenly arranged on the heat dissipation plate, the heat dissipation through holes are in a spiral shape, and the apertures are from the top to the bottom. To the bottom gradually enlarged, the ventilation plate is provided with a plurality of ventilation slots, and the ventilation plate is also provided with protrusions corresponding to the heat dissipation through holes, and the protrusions are matched with the heat dissipation through holes on the heat dissipation plate. Then, the protrusion is hollow.

As an improved technical solution, in order to uniformly mix the light energy emitted by the high-voltage blue light chip with the yellow phosphor powder and the light emitted by the red light chip, a condenser cup is installed on the top of the radiator, and the PCB board, prism and high-voltage blue light Both the chip and the red light chip are located inside the focusing cup, the inner wall of the focusing cup is a curved surface, and the diameter of the focusing cup increases from bottom to top.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) Through the cooperation of high-voltage blue light chips, red light chips, and yellow phosphors, the utility model organically combines red, yellow, and blue colors to achieve the effect of emitting warm white light, thereby improving the color rendering performance; In addition, by adjusting the ratio of red light chips and blue light chips, the purpose of adjusting white light saturation can be achieved.

(2) The utility model arranges a prism around the LED chip, so that the light is fully reflected at a vertical upward angle, so that the utilization rate of light energy is maximized and the light efficiency is improved.

(3) The utility model is designed for the high-power, high-voltage LED light source, adopts two heat dissipation methods of hole heat dissipation and vent hole heat dissipation, which improves the heat dissipation performance; and the structure adopted to improve the heat dissipation performance is simple.

(4) The utility model further improves the color rendering performance of light by arranging a concentrating cup to uniformly mix lights of various colors.

Description of drawings

Fig. 1 is a schematic diagram of the structure of this embodiment.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation mode of the utility model is not limited thereto.

Example

As shown in Figure 1, the integrated drive LED light source provided by the utility model includes a PCB board 1, a radiator mounted on the top of the PCB board, and a high-voltage blue light chip 2 and a red light chip 3, and the number of the red light chip 3 is one. The number of high-voltage blue light chips 2 is four, and the red light chip 3 and the high-voltage blue light chip 2 are arranged on the PCB board 1 in the form of area division, wherein the red light chip 3 is located in the middle of the four blue light chips 2, and the red light chip 3 The area ratio of the region to the region of the high-voltage blue-ray chip 2 is 1:4, and the high-voltage blue-ray chip 2 is packaged with yellow phosphor.

In addition, the two ends of the PCB board 1 are respectively provided with prisms, and the prisms are composed of a transparent light-incoming surface 41, a transparent light-returning surface 42 perpendicular to the light-incoming surface 41, and a light-reflecting surface 43 arranged at an angle of 45 degrees to the light-incoming surface 41. , the light-incoming surface 41 is also vertically fixed on the radiator; the radiator includes a heat dissipation plate 5 positioned at the top and a ventilation plate 6 positioned at the bottom, the heat dissipation plate 5 is fixed on the ventilation plate 6, and a plurality of heat dissipation plates are evenly arranged on the heat dissipation plate 5 Through holes, the heat dissipation through holes are in a spiral shape, and the apertures are gradually enlarged from top to bottom. The ventilation plate 6 is provided with multiple ventilation grooves, and the ventilation plate 6 is also provided with protrusions corresponding to the heat dissipation through holes. The heat dissipation through holes on the board 5 are matched and socketed, and the protrusions are hollow.

In order to evenly mix the light energy emitted by the high-voltage blue chip with the yellow phosphor powder and the light emitted by the red chip, the top of the radiator is equipped with a condenser cup 7, a PCB board 1, a prism, and a high-voltage blue chip 2 and a red chip 3 They are all located inside the focusing cup 7, the inner wall of the focusing cup 7 is a curved surface, and the diameter of the focusing cup 7 increases from bottom to top.

The above-mentioned embodiments only express the implementation manner of the present utility model, and its description is relatively specific and detailed, but it should not be interpreted as limiting the patent scope of the present utility model. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (2)

1. Integrated drive LED light source, including PCB board, LED chip and radiator mounted on the top of PCB board, characterized in that: the LED chip is composed of high-voltage blue light chip and red light chip, and the red light chip and high-voltage blue light chip The chips are arranged on the PCB board in the form of area division, the area ratio of the red light chip area and the high-voltage blue light chip area is 1:4, and the high-voltage blue light chip is packaged with yellow phosphor; The two ends of the PCB board are respectively provided with prisms, and the prisms are composed of a transparent light-incoming surface, a transparent light-returning surface perpendicular to the light-incoming surface, and a reflective surface arranged at an acute angle with the light-incoming surface. Also vertically fixed on the radiator; The radiator includes a heat dissipation plate on the upper part and a ventilation plate on the lower part, the heat dissipation plate is fixed on the ventilation plate, and a plurality of heat dissipation through holes are evenly arranged on the heat dissipation plate, the heat dissipation through holes are in a spiral shape, and the apertures are from the top to the bottom. To the bottom gradually enlarged, the ventilation plate is provided with a plurality of ventilation grooves, and the ventilation plate is also provided with protrusions corresponding to the heat dissipation through holes, and the protrusions are connected with the heat dissipation through holes on the heat dissipation plate. The socket is matched, and the protrusion is hollow. 2. The integrated drive LED light source according to claim 1, characterized in that: the top of the heat sink is equipped with a condenser cup, and the PCB board, prism, high-voltage blue light chip, and red light chip are all located in the condenser cup. Inside, the inner wall of the focusing cup is a curved surface, and the diameter of the focusing cup increases from bottom to top.

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