CN201078676Y - High-efficiency heat dissipation LED lamps - Google Patents

Abstract

A high-efficiency heat dissipation LED lamp belongs to the technical field of lamps. It includes the lamp body and the PCB mounting board, PCB circuit board, LED light source and lens installed on the lamp body. The electrical cavity is composed of three parts: the upper cover plate, the PCB circuit board, and the PCB mounting plate. The open heat dissipation cavity is a space formed by a plurality of grid-like heat conduction ribs in the upper part of the open heat sink. The lower surface of the open heat sink There are holes for LED wires and LED accommodation holes, and the LED lighting cavity is composed of an open heat sink, LED light source and lens, LED substrate, lampshade plate, and lower cover plate. The utility model has the advantages of reasonable and compact structure, easy production and good heat dissipation effect, prolongs the service life of the LED lamp and keeps the constant luminous effect.

Description

High-efficiency heat dissipation LED lamps

technical field

The invention discloses a high-efficiency heat dissipation LED lamp three-cavity structure design method and a lamp adopting the high-efficiency heat dissipation LED lamp three-cavity structure design method, in particular an array type high-power LED lamp.

Background technique

LED has the advantages of low energy consumption, low heat generation and long service life, and can completely replace traditional light sources. Considering the insufficient luminance of a single LED, LED lamps generally adopt an LED array structure, which creates a rare problem of heat dissipation for LED lamps.

In the Chinese Patent Application Publication No. CN1277665A document, a kind of LED lamp heat dissipation scheme is disclosed, in which the heat dissipation is to absorb the heat of the base connected to the LED through the connecting column in the lamp body, and then still dissipate heat in the lamp body, because it is Multiple times of indirect heat dissipation, and heat dissipation in the closed lamp body, the effect is not good.

In the Chinese Patent Application Publication No. CN1359137A document, a heat pipe lamp heat dissipation scheme is disclosed. In this scheme, the heat dissipation of the scheme is to absorb the heat of the light emitting device through one end of the superconducting heat pipe, and transfer the heat to the heat sink of the lamp body in contact with the air at the other end. , because it is still multiple indirect heat dissipation, the effect is still not good.

In the document of Chinese patent authorization announcement number CN2557805Y, a high-power LED lamp heat dissipation scheme is disclosed. In this scheme, the heat dissipation of the scheme is to absorb the heat of the LED through the air in the lamp body and transmit it to the lamp body heat sink in contact with the lamp body in contact with the air. It still belongs to indirect heat dissipation, and the effect is not good.

In the document of Chinese patent application publication number CN1594962A, a kind of LED lamp heat dissipation scheme is disclosed. Heat dissipation, the effect is still not good.

In the Chinese patent application publication number CN1605794A document, a heat dissipation scheme for LED spotlights is disclosed. In this scheme, the heat dissipation of the scheme is to absorb the heat of the LED through the air in the lamp body or the filling material and transmit it to the heat dissipation shell in contact with the air, which is still indirect heat dissipation. , still doesn't work well.

In the Chinese Patent Application Publication No. CN1603679A document, a LED lamp heat dissipation scheme is disclosed, in which the heat dissipation of the scheme is that the heat of the LED (mainly the heat at the base of the LED) is transmitted to the heat dissipation plate through the circuit board and the conductive heat dissipation adhesive layer. , still indirect heat dissipation, still ineffective.

Contents of the invention

The purpose of the patent of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a high-power, high-efficiency heat-dissipating LED lamp with high-efficiency heat dissipation, low energy consumption, long service life, and small light energy attenuation.

The object of the present invention is achieved in this way, the efficient heat dissipation LED lamps, including the lamp body and the PCB mounting board installed on the lamp body, PCB circuit board 2, LED light source and lens, is characterized in that the lamp body is provided with sequentially connected Integrated LED electrical cavity (I), open heat dissipation cavity (II), LED lighting cavity (III), LED electrical cavity consists of three parts: upper cover plate 1, PCB circuit board 2, PCB installation plate 3, open heat dissipation cavity The upper part of the open heat sink 6 is a space formed by a plurality of well-arranged grid-shaped heat-conducting ribs. The lower surface of the open heat sink 6 has LED wire perforations 4 and LED accommodating holes 5. The LED lighting cavity is formed by the open heat sink. 6. LED light source and lens 7, LED base plate 8, lampshade plate 9, and lower cover plate 10. The LED light source and lens 7 are connected to the LED base plate 8, and the LED base plate 8 is closely attached to the LED on the lower surface of the open radiator 6. In the accommodating hole 5 , the LED wire passes through the LED wire perforation 4 on the open heat sink 6 and the hole on the PCB mounting plate 3 to connect with the PCB circuit board 2 and connect the LED substrate 8 to thermal contact with the bottom surface of the open heat sink 6 .

The thermal contact is a thermal conductive adhesive contact.

The upper cover plate 1, the open radiator 6, and the lower cover plate 10 are all exposed in the air.

The LED electrical cavity (I) and LED lighting cavity (III) of the LED lamps used for outdoor lighting must be airtight inside the cavity and meet the waterproof requirements above IP65, and the LED electrical cavity of the LED lamps for indoor lighting must be airtight. (I), LED lighting cavity (III), the inside of the cavity reaches IP20.

The LED light source and the chips of the lens 7 are directly packaged in the open heat sink 6 , and form heat conduction directly with the bottom surface of the open heat sink 6 .

The invention has reasonable and compact structure, easy manufacture and good heat dissipation effect. The three-cavity structure design of LED lamps with high heat dissipation mainly includes three functional parts: the LED electrical cavity part; the open heat dissipation cavity part; the LED lighting cavity part. The three functional parts of the lamp body are sequentially integrated into one. The cavity part of the LED electrical appliance is composed of three parts: the upper cover plate 1, the PCB circuit board and the corresponding electronic components 2, and the PCB mounting plate 3; The space formed by heat-conducting ribs, the lower surface of the open radiator 6 has LED wire perforations 4 and LED accommodating holes 5; the LED lighting cavity part is composed of the open radiator 6, LED light source and lens 7, LED substrate 8, lampshade Plate 9, lower cover plate 10 are made up of five parts. The LED light source and the lens 7 are connected to the LED substrate 8, the LED substrate 8 is closely attached to the LED housing hole 5 on the lower surface of the open heat sink, and the LED wire passes through the LED wire hole 4 on the open heat sink and is installed on the PCB. The corresponding holes on the board 3 are then connected to the PCB circuit board 2; the LED substrate 8 is in thermal contact with the bottom surface of the open heat sink 6, and the heat of the LED light source and the lens 7 is conducted into the open heat sink 6, and the open heat sink 6 is exposed In the air, the external natural wind passes through the gaps between the grid-shaped heat-conducting ribs on the upper part of the open heat dissipation body 6 to realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly turn the LED light source 7 The heat generated can be dissipated to the maximum extent, thus achieving an efficient heat dissipation effect. In addition, the LED luminaire designed by using the three-cavity structure design method can realize spatial isolation between the LED electrical cavity part and the LED lighting cavity part, so that the respective working environments of the two cavities do not affect each other, and the LED electrical cavity The heat generated by the body part and the LED lighting cavity part will not be superimposed, so the cooling effect is achieved through the reasonable configuration of the space structure, which further prolongs the service life of the LED lamp and maintains a constant luminous effect.

The PCB mounting board, upper cover, open heat sink, LED substrate, and lower cover used as LED lamps are made of heat-conducting materials, and the heat-conducting materials are aluminum alloy or copper alloy or other heat-conducting metal alloys.

The PCB circuit board 2 is set separately; the circuit can also be directly printed on the upper surface of the open heat sink 6 by using a thick film process; Or other power supply devices directly provide the working voltage required for the LED light source and lens 7 to work.

And, the upper cover plate, the open radiator and the lower cover plate of the lamp body are all exposed in the air.

In addition, the LED substrate and the LED accommodating hole on the lower surface of the open radiator 6 are tightly adhered to each other through thermally conductive glue or other thermally conductive materials; or, the LED accommodating hole 5 on the lower surface of the open radiator 6 is also It is not necessary to directly attach the LED light source and the lens 7 to the bottom surface of the open radiator 6 .

Moreover, the upper cover plate, the open radiator and the lower cover plate are all exposed to the air.

Furthermore, when used for outdoor lighting, the cavity part of the LED electrical appliance and the LED lighting cavity of the LED lamp must be airtight inside, and it is required to meet the waterproof requirements above IP65; In this case, the LED electrical appliance cavity part and the LED lighting cavity part of the LED lamp mentioned above only need to meet the requirement of about IP20 inside the cavity.

In addition, the LED light source and the lens can also be added with other devices that can manage light.

Description of drawings

Fig. 1 is a schematic diagram of the structure principle of the present invention;

Fig. 2 is a schematic diagram of the structure and principle of the lamp cap of the LED street lamp of the present invention;

Fig. 2A is an enlarged schematic diagram of place A in Fig. 2;

Fig. 2B is an enlarged schematic diagram of place B in Fig. 2;

Fig. 3 is a schematic diagram of the cross-sectional structure of the lamp holder of the street lamp in Fig. 2;

Fig. 4 is a schematic diagram of the sectional structure principle of the LED tunnel light of the present invention;

Fig. 5 is a schematic diagram of the sectional structure principle of the LED spotlight of the present invention;

Fig. 6 is a schematic diagram of the sectional structure of the LED floodlight of the present invention;

Fig. 7 is a schematic diagram of the sectional structure of the LED wall washer of the present invention;

Fig. 8 is a schematic diagram of the principle of the sectional structure of the LED embedded lamp of the present invention;

Fig. 9 is a schematic diagram of the sectional structure principle of the LED chandelier of the present invention;

Fig. 10 is a schematic diagram of the sectional structure of the LED ceiling lamp of the present invention;

Fig. 11 is a schematic diagram of the principle of the sectional structure of the LED cup lamp of the present invention.

Fig. 12 is a schematic diagram of the sectional structure principle of the LED automobile headlight of the present invention.

In the figure: 1 is the upper cover, 2 is the PCB circuit board, 3 is the PCB installation board, 4 is the LED wire perforation, 5 is the LED accommodating hole, 6 is the open radiator, 7 is the LED light source and lens, 8 is the LED substrate, 9 is the lampshade plate, 10 is the lower cover plate, 11 is the wind deflector, (I) is the LED electrical cavity part, (II) is the open heat dissipation cavity part, (III) is the LED lighting cavity part.

Detailed ways

Embodiment 1, as shown in Figure 2 and Figure 3. The lamp head of the LED street lamp is long, and the lower surface of the open heat sink 6 is arranged with multiple LED light sources and lenses 7 along the vertical and horizontal directions; each LED light source and lens 7 are attached to the lower surface of the open heat sink 6 through the LED substrate 8. In the accommodation hole 5, the LED light source and lens 7 wires pass through the LED wire hole 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the open heat sink 6. From the surface to the upper part of the open heat sink 6, there are many grid-like heat conduction ribs arranged in a row. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between some well-arranged grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum, thus achieving high efficiency. cooling effect.

Embodiment 2, as shown in Figure 4. LED tunnel light, the lower surface of the open heat sink 6 is arranged with a plurality of LED light sources and lenses 7 along the vertical and horizontal directions; each LED light source and lens 7 is attached to the LED accommodating hole 5 on the lower surface of the open heat sink 6 through the LED substrate 8 Inside, the wires of the LED light source and the lens 7 pass through the LED wire perforation 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open radiator 6 until the open radiator 6 is opened. There are many grid-like heat conduction ribs on the upper part of the heat sink 6. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between the grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum, thereby achieving an efficient heat dissipation effect.

Embodiment 3, as shown in Figure 5. For LED spotlights, a plurality of LED light sources and lenses 7 are respectively arranged on the lower surface of the open heat sink 6 along the vertical and horizontal directions; each LED light source and lens 7 are attached to the LED accommodating hole 5 on the lower surface of the open heat sink 6 through the LED substrate 8 Inside, the wires of the LED light source and the lens 7 pass through the LED wire perforation 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open radiator 6 until the open radiator 6 is opened. There are many grid-like heat conduction ribs on the upper part of the heat sink 6. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between the grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum, thereby achieving an efficient heat dissipation effect.

Embodiment 4, as shown in Figure 6. For LED floodlights, a plurality of LED light sources and lenses 7 are respectively arranged on the lower surface of the open radiator 6 along the vertical and horizontal directions; each LED light source 7 is attached to the LED accommodation hole 5 on the lower surface of the open radiator 6 through the LED substrate 8 The wires of the LED light source 7 pass through the LED wire hole 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly transmitted to the lower surface of the open heat sink 6 until the open heat sink 6 There are many well-arranged grid-shaped heat-conducting ribs on the upper part. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the many well-arranged grids on the upper part of the open heat sink 6. The gaps between the grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum, thereby achieving an efficient heat dissipation effect.

Embodiment 5, as shown in Figure 7. LED wall washer, the lower surface of the open heat sink 6 is respectively arranged with multiple LED light sources and lenses 7 along the length direction of the lamp; each LED light source and lens 7 is attached to the lower surface of the open heat sink 6 through the LED substrate 8 and the LED is accommodated In the hole 5, the LED light source and lens 7 wires pass through the LED wire hole 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open radiator 6 until The upper part of the open heat sink 6 has a plurality of well-arranged grid-shaped heat-conducting ribs. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between the well-arranged grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum extent, thereby realizing efficient heat dissipation Effect.

Embodiment 6, as shown in Figure 8. The LED embedded lamp has a plurality of LED light sources and lenses 7 respectively arranged on the lower surface of the open heat sink 6 along the vertical and horizontal directions; each LED light source and lens 7 is attached to the LED accommodating hole 5 on the lower surface of the open heat sink 6 through the LED substrate 8 Inside, the wires of the LED light source and the lens 7 pass through the LED wire perforation 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open radiator 6 until the open radiator 6 is opened. There are many grid-like heat conduction ribs on the upper part of the heat sink 6. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between the grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum, thereby achieving an efficient heat dissipation effect.

Embodiment 7, as shown in Figure 9. LED chandelier, the lower surface of the open radiator 6 is respectively arranged with multiple LED light sources and lenses 7 along the length direction of the lamp; each LED light source and lens 7 is attached to the LED accommodating hole 5 on the lower surface of the open radiator 6 through the LED substrate 8 Inside, the wires of the LED light source and the lens 7 pass through the LED wire perforation 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open radiator 6 until the open radiator 6 is opened. There are many grid-like heat conduction ribs on the upper part of the heat sink 6. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between the grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum, thereby achieving an efficient heat dissipation effect.

Embodiment 8, as shown in Figure 10. LED ceiling lamp, the lower surface of the open heat sink 6 is arranged along the vertical and horizontal directions (the lamp is long) or around the center of the circle (the lamp is circular) and a plurality of LED light sources and lenses 7 are respectively arranged; each LED light source and lens 7 pass through The LED substrate 8 is attached to the LED accommodating hole 5 on the lower surface of the open radiator 6, and the LED light source and the lens 7 wires pass through the LED wire perforation 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and the LED light source 7 generates Most of the heat is directly conducted to the lower surface of the open heat sink 6 until the upper part of the open heat sink 6 has a grid-shaped heat conduction rib, because the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside world In the air, the natural wind from the outside passes through the gaps between the grid-shaped heat-conducting ribs on the upper part of the open heat dissipation body 6 to realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly turn the LED light source 7 The heat generated can be dissipated to the maximum extent, thus achieving efficient heat dissipation.

Embodiment 9, as shown in Figure 11. LED cup lamp, the lower surface of the open heat sink 6 is arranged with a single or multiple LED light sources and lenses 7 arranged around the center of the circle; each LED light source and lens 7 are attached to the lower surface of the open heat sink 6 through the LED substrate 8 and the LED is accommodated In the hole 5, the LED light source and lens 7 wires pass through the LED wire hole 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open radiator 6 until The upper part of the open heat sink 6 has a plurality of well-arranged grid-shaped heat-conducting ribs. Since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the natural wind from the outside passes through the upper part of the open heat sink 6. The gaps between the well-arranged grid-shaped heat-conducting ribs realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum extent, thereby realizing efficient heat dissipation Effect.

Embodiment 10, as shown in Figure 12. LED car headlights, the lower surface of the open heat sink 6 is arranged with a single or multiple LED light sources and lenses 7 arranged around the center of the circle; each LED light source and lens 7 are attached to the LED container on the lower surface of the open heat sink 6 through the LED substrate 8 Placed in the hole 5, the LED light source and the lens 7 wires pass through the LED wire hole 4 to realize circuit connection with the PCB circuit board and corresponding electronic components 2, and most of the heat generated by the LED light source 7 is directly conducted to the lower surface of the open heat sink 6 Until the upper part of the open heat sink 6 has a grid-shaped heat conduction rib, since the open heat dissipation cavity part (II) of the lamp is directly exposed to the outside air, the outside natural wind passes through the air guide plate 11 and the open The gaps between the grid-shaped heat-conducting ribs on the upper part of the heat sink 6 realize the convection between the hot air in the open heat dissipation cavity and the cold air outside, and quickly dissipate the heat generated by the LED light source 7 to the maximum. Thus, an efficient heat dissipation effect is realized.

The above-mentioned embodiments are typical implementations of the present invention, and in other different embodiments, different adjustments may be made to the technical solutions. In the above example, the LED light source 7 is in contact with the open heat sink 6 through the LED substrate 8 , and in other examples, the LED light source can be directly in contact with the open heat sink 6 .

In the above-mentioned embodiment, the PCB circuit board 2 carrying the circuit is provided separately. In other embodiments, the circuit can be directly printed on the upper surface of the open heat sink 6 with a thick film process, so that the PCB circuit board and the corresponding electronic components 2 The generated heat is conducted to the grid-shaped heat-conducting ribs of the open radiator 6 in the same way, and then the efficient heat dissipation effect is achieved through air self-convection.

Claims (6)

1. the LED light fixture of a high efficiency and heat radiation, comprise the PCB installing plate of installing on lamp body and the lamp body, PCB circuit board (2), led light source and lens, it is characterized in that lamp body is provided with the LED electric apparatus chamber (I) that fuses in order, open heat radiation chamber (II), LED illumination cavity (III), the LED electric apparatus chamber is by upper cover plate (1), PCB circuit board (2), PCB installing plate (3) three parts are formed, open heat radiation chamber is the space that open radiator (6) top has many in picturesque disorder grid-like heat conduction ribs to form, open radiator (6) lower surface has the perforation of LED lead (4) and LED containing hole (5), the LED illumination cavity is by open radiator (6), led light source and lens (7), LED substrate (8), lampshade plate (9), lower cover (10) is formed, led light source and lens (7) are connected on the LED substrate (8), LED substrate (8) close attachment is in the LED containing hole (5) of open radiator (6) lower surface, and the LED lead perforation (4) that the LED lead passes on the open radiator (6) is connected with PCB circuit board (2) with hole on the PCB installing plate (3); LED substrate (8) and open radiator (6) bottom surface thermo-contact.

2. the LED light fixture of high efficiency and heat radiation according to claim 1 is characterized in that described thermo-contact is the heat-conducting glue contact.

3. the LED light fixture of high efficiency and heat radiation according to claim 1 is characterized in that described upper cover plate (1), open radiator (6), lower cover (10) all are exposed in the air.

4. the LED light fixture of high efficiency and heat radiation according to claim 1, the LED electric apparatus chamber (I), the LED illumination cavity (III) that it is characterized in that the described LED light fixture that uses in outdoor lighting, its inside cavity must be airtight, reach the above waterproof requirement of IP65, the LED electric apparatus chamber (I) of the LED light fixture of indoor lighting, LED illumination cavity (III), its inside cavity reaches IP20.

5. the LED light fixture of high efficiency and heat radiation according to claim 1, the chip that it is characterized in that described led light source and lens (7) is directly to be encapsulated in the open radiator (6), directly forms the heat conduction with open radiator (6) bottom surface.

6. the LED light fixture of high efficiency and heat radiation as claimed in claim 1 is characterized in that accompanying open radiator (6) bottom surface of described led light source and lens (7) is plane, curved surface.

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