CN202228996U - Spotlight with LED as light source - Google Patents

Abstract

The utility model provides an use shot-light of LED as light source, including printing opacity cover, light source subassembly, radiating block, electrical apparatus box, drive assembly and electrode, printing opacity cover dress is on the radiating block, and the drive assembly holding is in the electrical apparatus box, and wherein, the radiating block has the bottom of indent structure, sets up the louvre on the indent bottom, and the light source subassembly covers in printing opacity cover and fixes on the flat bottom of the indent bottom of radiating block, and the back of radiating block sets up a plurality of heat dissipation ribs, and this a plurality of heat dissipation ribs enclose into a chamber, and the electrical apparatus box is arranged in at least partially the intracavity, be formed with between the heat dissipation rib and separate the crack, the chamber accessible separate the crack and be linked together with the external world, form heat dissipation channel. Gaps in non-closed connection are formed among the radiating ribs, so that an effective radiating channel is provided, and the traditional closed radiating structure is avoided; the radiating holes and the radiating ribs on the radiating block jointly form a convection radiating channel inside the radiating block, and heat generated by the LED light source assembly can be dissipated through air convection.

Description

Spotlights with LED as light source

technical field

The utility model relates to a lamp with LED as a light source, in particular to an LED spotlight which is more conducive to heat dissipation and has a novel structure, and belongs to the technical field of LED semiconductor lighting.

Background technique

Spotlights are lamps installed on roofs and kitchen cabinets. They are widely used in shopping malls, large supermarkets, offices, hospitals, schools, hotels, high-end residences, etc. as key lighting. They can not only brighten the environment, but also beautify the environment. , to add color to life.

At present, the spotlights commonly used mostly use metal halide lamps or fluorescent lamps as light sources. This kind of spotlight generally has high power consumption, high heat generation, short lamp life, and the light color is not soft enough, and the human eye will feel dazzling or even glare when looking directly at it.

LED (Light Emitting Diode), also known as light-emitting diodes, uses solid semiconductor chips as light-emitting materials. When an appropriate voltage is applied to both ends, the carriers in the semiconductor recombine, releasing excess energy to cause photon emission to produce visible light. The LED light source has high luminous efficiency, good monochromaticity and narrow spectrum of light, and can directly emit colored visible light without filtering. Less power consumption Under the same lighting effect, the power consumption is one-eighth of incandescent bulbs and one-half of fluorescent tubes. Long service life, up to 100,000 hours. Strong safety and reliability, low calorific value, no heat radiation, is a cold light source, safe to touch and can precisely control the light pattern and angle of light, soft light color, no glare, and does not contain mercury, sodium and other substances that may endanger health.

The existing LED spotlights solve some shortcomings of existing spotlights using traditional light sources. However, due to the use of high-power LEDs as light sources, their heat generation is larger than that of ordinary low-power LEDs, and they are used for a long time. The increase in temperature will in turn lead to an increase in the internal resistance of the LED lamp. In order to effectively reduce the temperature of the LED light source, it is necessary to reduce the thermal resistance of the entire product, reduce the internal thermal resistance of the heat conduction, select an aluminum substrate with high thermal conductivity, and use a heat conduction pad to reduce contact heat. Resistance, optimize the heat sink of the shell, increase the effective heat exchange area, etc. At present, providing effective heat dissipation channels is an important technical issue that must be considered when LED is used as a spotlight light source.

Contents of the invention

In order to improve the deficiencies of the above-mentioned LED spotlights, the utility model provides an LED spotlight with a unique structure and beautiful appearance that can well solve the problem of heat dissipation of the existing LED lamps.

The purpose of this utility model is achieved in this way: a spotlight with LED as the light source, including a light transmission cover, a light source assembly, a heat dissipation block, an electrical box, a drive assembly and electrodes, the light transmission cover is mounted on the heat dissipation block, and the drive assembly It is accommodated in the electrical box, wherein the heat dissipation block has a bottom with a concave structure, and heat dissipation holes are provided on the concave bottom, and the light source assembly is covered in the light-transmitting cover and fixed on the bottom of the heat dissipation block On the flat bottom of the concave bottom, a plurality of heat dissipation ribs are arranged on the back of the heat dissipation block, and the plurality of heat dissipation ribs enclose a cavity, the electrical box is at least partially placed in the cavity, and the heat dissipation ribs A gap is formed between the strips, and the cavity can communicate with the outside through the gap to form a heat dissipation channel.

Further, the heat dissipation holes are arranged on the flat bottom of the concave bottom of the heat dissipation block, and arranged on the periphery of the light transmission cover.

Further, the heat dissipation ribs may be configured in one of radial shape, parallel strip shape, ring shape or a combination thereof.

Further, the heat dissipation block is made by die-casting.

Further, the drive assembly includes a drive circuit with a temperature control circuit protection system that can automatically adjust the temperature.

Further, the number of LEDs corresponding to the light source assembly may be single or multiple.

Further, the light-transmitting cover can be made of PMMA, or other wear-resistant and heat-resistant light-transmitting materials can also be used, and the light-diffusing material used to form the anti-glare effect of the lamp can also be added or the surface can be frosted or evenly distributed. Boss.

Further, the electrical box is made of plastic, including an upper cover of the electrical box and a lower cover of the electrical box sealed together, the lower cover of the electrical box is close to the bottom of the heat dissipation block and between the bottom of the heat dissipation block There are gaps for thermal insulation.

Further, the transparent cover is clamped at the flat bottom of the concave bottom of the heat dissipation block.

By adopting the above technical solutions, the following beneficial technical effects can be achieved:

(1) By setting a plurality of heat dissipation ribs on the back of the heat dissipation block, the heat dissipation area is increased and the heat dissipation effect is enhanced, and a non-closed connection gap is formed between the heat dissipation ribs to provide an effective heat dissipation channel, avoiding the traditional Closed cooling structure.

(2) The heat dissipation holes and heat dissipation ribs on the heat dissipation block together form the convection heat dissipation channel inside the heat dissipation block. The heat dissipation holes are close to the LED light source components, which can dissipate the heat generated by the LED light source components through air convection.

(3) The electrical box is formed by fastening the upper cover of the electrical box and the lower cover of the electrical box. There is a gap between the lower cover of the electrical box and the bottom of the heat dissipation block, which further plays the role of insulation and heat insulation, and realizes the separation of heat and electricity. Effectively protect drive components.

(4) The utility model has a reasonable and simple structure, good integrity, and convenient manufacturing, processing and assembling. It can be directly installed into the lamp holder without disassembly during installation.

(5) In terms of appearance, it solves the appearance defects of the existing LED spotlights, making the overall effect more perfect.

Description of drawings

Fig. 1 is the structural sectional schematic diagram of the spotlight with LED as light source of the present utility model;

Fig. 2 is a schematic perspective view of the appearance of the spotlight with LED as the light source of the present invention;

Fig. 3 is an exploded view of components of the spotlight with LED as the light source of the present invention.

In the figure: 1 light transmission cover, 2 light source assembly, 3 heat dissipation block, 4 electrical box lower cover, 5 drive assembly, 6 electrical box upper cover, 7 electrodes, 10, heat dissipation channel, 31 heat dissipation block bottom, 32 heat dissipation ribs, 33 heat dissipation holes, 34 cavity surrounded by heat dissipation ribs, 61 heat dissipation ports

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

As shown in FIG. 1 to FIG. 3 , it is a schematic diagram of a spotlight using LED as a light source of the present invention. The spotlight includes a light transmission cover 1, a light source assembly 2, a heat dissipation block 3, an electrical box lower cover 4, a drive assembly 5, an electrical box upper cover 6, and an electrode 7. The light source assembly 2 is fixed at an appropriate position in the heat dissipation block 3 by screws , the translucent cover 1 is installed on the heat dissipation block 3, the driving assembly 5 is placed in the electrical box formed by the upper cover 6 of the electrical box and the lower cover 4 of the electrical box, and the upper cover 6 of the electrical box and the heat dissipation block 4 are screwed together. Make the connection, install it on the pre-installed GX53 light socket after the overall assembly.

The heat dissipation block 3 is made by die-casting. The bottom 31 of the heat dissipation block 3 adopts a concave structure, which includes a flat bottom part in the middle and an outer edge part that smoothly transitions from the flat bottom to an outer arc shape. The heat dissipation block 3 is also provided with heat dissipation holes 33 , the heat dissipation holes 33 are preferably arranged at the flat bottom of the bottom 31; the back of the heat dissipation block 3 is provided with radial heat dissipation ribs 32, and the heat dissipation ribs 32 can be parallel strips, rings or other shapes. A plurality of heat dissipation ribs 32 enclose a cavity 34, and the plurality of heat dissipation ribs 32 are not closed at one side end corresponding to the cavity 34, that is, a gap is formed between adjacent heat dissipation ribs 32 to facilitate the connection between the cavity 34 and the cavity 34. The gap connected with the outside world forms a heat dissipation channel. The heat generated by the LED light source can be dissipated quickly, ensuring the working environment temperature required for the normal operation of the LED light source, thereby prolonging the service life of the LED lamp.

The translucent cover 1 is installed on the cooling block 3 by clamping. The translucent cover 1 is provided with tabs, and the tabs are snapped into the bayonets on the flat bottom of the cooling block 3. The assembly is convenient and the connection is firm; the light source The component 2 is covered in the light-transmitting cover 1 and fixed on the flat bottom of the heat dissipation block 3 by screws, so that the heat generated by the light source component 2 is quickly transmitted to the entire heat dissipation block 3 through the flat bottom of the heat dissipation block 3 to dissipate the heat; The heat dissipation holes 33 on the heat dissipation block 3 are arranged on the periphery of the installation position of the light-transmitting cover 1, which can be configured as circular arc holes, or radial flat holes, etc. The convection heat dissipation channel 10 is formed between them. Since the heat dissipation hole 33 is close to the light source assembly 2, it is convenient to dissipate the heat generated by the light source assembly 2 through air convection, and dissipate the hot air near the light source assembly 2 by convection.

The upper and lower covers 4 and 6 of the electrical box are made of plastic parts, and the electrical box is placed in the cavity surrounded by the heat dissipation ribs 32, so that the whole lamp is compact in size. The upper cover 6 of the electrical box is provided with a heat dissipation port 61, and the lower cover of the electrical box 4 is substantially not in contact with the bottom 31 of the heat sink 3, and there is a heat-insulating gap, which effectively realizes heat and electricity separation, protects the power drive assembly 5 in the electrical box, and prolongs the service life of the entire lamp.

The light source driving circuit of the driving component 5 adopts a temperature control circuit protection system to automatically adjust the temperature, and can control the output current of the power supply according to the temperature of the LED lamp to adjust the power consumption of the LED, including the LED constant voltage driving power module and the parallel connected Temperature control system module. The temperature control of the LED lamp is realized by controlling the output voltage. The change of the voltage changes the luminous flux and power consumption of the LED lamp, and at the same time avoids the LED light degradation caused by overheating, protects the electrical components and prolongs the service life of the light source.

In this embodiment, there are four LED light sources corresponding to the power supply assembly 2, which constitutes a GX53-4W spotlight. Of course, the number of LEDs corresponding to the light source assembly can be single or more.

The light-transmitting cover 1 is made of PMMA, and other wear-resistant and heat-resistant light-transmitting materials can also be used, and light-diffusing materials can also be added or the surface can be frosted or evenly distributed with bosses, which can form the anti-glare effect of lamps.

The utility model has the advantages of reasonable and simple structure, good integrity, and convenient manufacture, processing and assembly. A pre-installed tube (not shown) can also be provided outside the spotlight, and can be directly loaded into the lamp holder without disassembly during installation.

In terms of appearance, it solves the appearance defects of the existing LED spotlights, making the overall effect more perfect.

Claims (9)

1. one kind is the shot-light of light source with LED, comprises diffuser, light source assembly, radiating block, electrical equipment box, driven unit and electrode, and diffuser is contained on the radiating block; Driven unit is placed in the electrical equipment box; It is characterized in that: said radiating block has the bottom of concave inward structure, and said indent is provided with louvre on the bottom, and said light source assembly covers in the said diffuser and is fixed on indent bottom flat of said radiating block; The back side of said radiating block is provided with a plurality of heat radiation ribs; Said a plurality of heat radiation rib surrounds a chamber, and said electrical equipment box places in the said chamber at least in part, is formed with between the said heat radiation rib at a distance from the crack; Said chamber can be connected with the external world at a distance from the crack through said, forms heat dissipation channel.

2. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said louvre is arranged on indent bottom flat of said radiating block, and is arranged in the periphery of said diffuser.

3. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said heat radiation rib can be configured to radial, parallel strip, circular a kind of or its combination.

According in the claim 1 to 3 each described be the shot-light of light source with lED, it is characterized in that: said radiating block is processed through die cast.

5. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said driven unit comprises the drive circuit with temperature control circuit protection system that can automatically adjust to temperature.

6. according to claim 1 is the shot-light of light source with LED, it is characterized in that: the pairing LED of a said light source assembly number can be single or many.

7. according to claim 1 is the shot-light of light source with LED, and it is characterized in that: said diffuser can be PMMA and processes, and also can increase the photodiffusion material that is used to form light fixture anti-dazzle effect or frosted is done on its surface handled or be uniformly distributed with boss.

8. according to claim 1 is the shot-light of light source with LED; It is characterized in that: said electrical equipment box is made of plastics; Comprise on the cap seal electrical equipment box together cover and electrical equipment box cover down, said electrical equipment box down cover near the bottom of said radiating block and and said radiating block bottom between have the gap of partiting thermal insulation.

9. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said diffuser is connected to the flat place of the indent bottom of said radiating block.

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