CN204083870U - A kind of LEDbulb lamp - Google Patents

Abstract

The application relates to an LED bulb lamp, which includes a connector, a housing, an LED light source module, a heat sink, a circuit board and a lampshade. The connector is connected to the upper part of the housing, and there is an accommodation space inside the housing. A plurality of cooling grooves are opened around the casing, the radiator is fixed in the accommodation space of the casing, the radiator includes a cooling cup, the bottom of the cooling cup is an arc-shaped bottom surface, and the LED light source module includes A substrate and a plurality of LED chips, the substrate is an arc surface substrate arranged at the bottom of the housing, the LED chips are evenly pasted on the arc surface substrate, and the bottom surface of the arc surface and the arc surface substrate form a There is an air flow channel, and the air flow channel communicates with the outside of the housing through the air hole on the housing. On the two sides of each LED chip, there are guide holes on the substrate, and the guide holes communicate with the air flow channel. The circuit board It is arranged in the connector and electrically connected with the LED light source module.

Description

A kind of LED bulb lamp

technical field

The utility model relates to the technical field of LED lighting, in particular to an LED bulb lamp.

Background technique

Light-emitting diode (Light-Emitting Diode, LED) is a semiconductor component. The material of its light-emitting chip is mainly a compound of chemical elements, such as gallium phosphide (GaP) or gallium arsenide (GaAs). The principle of light emission is to convert electrical energy into light Because the life of LED is as long as more than 100,000 hours, and LED has the advantages of fast response, small size, power saving, low pollution, high reliability, and suitable for mass production, it will soon become a new star in the lighting market.

With the demand for energy conservation and environmental protection, it has become a worldwide trend to use LEDs to construct lighting fixtures that provide lighting in people's daily lives. In current technology, LEDs are usually mounted on various carriers (such as printed circuit boards) , to make a lighting unit; however, LEDs generate a large amount of heat energy when generating light sources, so in the above-mentioned lighting units, the heat energy generated by LEDs often cannot be effectively dissipated to the outside of the device, resulting in reduced luminous efficacy of LEDs ;Taking the LED bulb as an example, in order to avoid overheating when the LED emits light, the LED bulb will be equipped with a heat dissipation structure, but if the efficiency of the LED bulb’s heat dissipation structure is not good, it will make the LED bulb Luminous decay or color change will greatly reduce the life of LED bulbs; therefore, how to increase the heat dissipation efficiency of LED bulbs to improve the reliability of use has become an important technical issue.

Utility model content

In order to solve the above-mentioned technical problems, the technical scheme of the utility model provides an LED bulb lamp. By setting a dual heat dissipation structure of the radiator and the channel for heat dissipation, the heat dissipation efficiency of the LED bulb lamp can be effectively improved, and the LED bulb lamp can be improved. service life.

In order to achieve the above purpose, a LED bulb lamp of the present utility model includes a connector, a housing, an LED light source module, a heat sink, a circuit board and a lampshade, the connector is connected to the upper part of the housing, and the housing has a In the accommodation space, a plurality of cooling grooves are opened around the housing, and the radiator is fixed in the accommodation space of the housing. The radiator includes a heat dissipation cup, and the bottom of the heat dissipation cup is an arc-shaped bottom surface. The LED light source module includes a base plate and a plurality of LED chips. The base plate is an arc-shaped base plate arranged at the bottom of the housing, and the LED chips are evenly pasted on the arc-shaped base plate. An air flow channel is formed between the curved substrates, and the air flow channel communicates with the outside of the housing through the air holes on the housing. On both sides of each LED chip, there are guide holes on the base board, and the guide holes are connected with the air flow. The channels are connected, and the circuit board is arranged in the connector and electrically connected with the LED light source module.

Further, a plurality of cooling holes are opened on the bottom surface of the circular arc surface.

Further, the cross-sectional height of the central area of the airflow channel is lower than the cross-sectional height of the side area of the airflow channel. Through this design, after the airflow enters from the air hole on the side of the housing, it first enters into the relatively wide The side area of the airflow channel then flows to the narrower central area of the airflow channel, so that the pressure of the airflow becomes greater in the central area, and its ability to carry away heat is improved, which helps to improve the heat dissipation performance.

Further, a central cylinder is provided in the accommodating space in the housing, and the central cylinder is a metal central cylinder, one end of which is connected to the connecting head, and the other end is connected to the bottom surface of the arc surface of the cooling cup. A wire is threaded inside the central column, and the wire is used to realize the electrical connection between the circuit board and the LED light source module. The metal central cylinder is used to wrap the wire to realize the electrical connection, which avoids the easy damage of the direct use of the bare wire, effectively ensures the stability of the electrical connection, and effectively prevents the aging of the wire. At the same time, the surface of the central cylinder can also be provided with The heat dissipation fins further increase the heat dissipation space in the housing and improve the heat dissipation effect.

Further, a plurality of heat dissipation fins are evenly arranged on the heat dissipation cup, and heat dissipation holes are also opened on the heat dissipation fins, which helps to further increase the heat dissipation area and improve the heat dissipation effect.

Further, the width of the heat dissipation grooves ranges from 1mm to 5mm, and the distance between adjacent heat dissipation grooves ranges from 1mm to 10mm. The width of the heat dissipation grooves is limited to prevent fingers from reaching into the heat dissipation grooves and touching the contents of the housing. other components in the space, which makes the shell can be made of plastic, and the use of plastic materials can effectively reduce the production cost, because the shell is made of plastic, and the width of the heat dissipation groove is strictly limited, people Fingers cannot touch the housing space, so there is no need to use an isolated power supply as the LED drive power supply.

Compared with the prior art, the utility model has the following advantages by adopting the above-mentioned technical scheme:

The utility model adopts a double heat dissipation structure by setting a radiator and an air flow channel, which can effectively improve the heat dissipation efficiency of the LED bulb lamp, and adopts a conduction groove on the casing to form air convection inside the casing, combined with heat dissipation The device effectively dissipates the heat generated when the LED chip emits light, thereby reducing the working temperature of the LED bulb lamp. And because of the fine conduction slots and the strict limitation of the width of the heat dissipation slots, human fingers cannot touch the housing space, so there is no need to use an isolated power supply as the LED drive power supply.

Description of drawings

Fig. 1 is a schematic exploded view of the structure of an embodiment of the present invention.

Fig. 2 is a partial cross-sectional schematic diagram of the structure of an embodiment of the present invention.

Detailed ways

In order to further describe the technical solution of the utility model, the utility model is elaborated below through specific examples. Referring to Figures 1 and 2, an LED bulb lamp includes a connector 1, a housing 2, an LED light source module 3, a radiator 4, a circuit board 5 and a lampshade 8, and the connector 1 and the housing 2 The upper part is connected, and the connector 1 can use different connectors 1 to match and install on various connectors. This embodiment shows the shape of the connector 1 of the screw port. The casing 2 can also be a cover-shaped casing 2, and a plurality of cooling grooves 22 are opened around the casing 2, and the cooling grooves 22 are evenly arranged around the casing 2 in a horizontal manner. Around, of course, multiple groups of heat dissipation grooves 22 can also be provided, and the heat dissipation grooves 22 between each group of heat dissipation grooves 22 are horizontally arranged in parallel, and each group of heat dissipation grooves 22 is adjacently arranged around the casing 2. In addition, the The cooling grooves 22 can also be arranged around the casing 2 in a vertical arrangement. The angle and orientation of the specific setting are not limited by this, and can be set according to factors such as difficulty in mold opening, aesthetics, and heat dissipation effect. The arrangement of the cooling grooves 22.

In this embodiment, the width range of each heat dissipation groove 22 is 3mm, and this width is usually the maximum value of the width of each position of the heat dissipation groove 22, because some heat dissipation grooves 22 may have a larger width in the middle area, while the two sides are set smaller. , then this width refers to the width of the widest position of the entire heat dissipation groove 22, and the range of the heat dissipation groove 22 can also be selected from any value in the range of 1mm-5mm, which is mainly to prevent human fingers from penetrating into the internal accommodation space of the housing 2 For the purpose, the distance between adjacent heat dissipation grooves 22 is 1mm-10mm, and the width of the heat dissipation grooves 22 is limited to prevent fingers from reaching into the heat dissipation grooves 22 and touching other components in the accommodation space of the housing 2, And the housing 2 can be made of plastic, and the use of plastic materials can effectively reduce the production cost. Since the housing 2 is made of plastic, and the width of the cooling groove 22 is strictly limited, people's fingers cannot touch it. to the accommodation space of the casing 2, so there is no need to use an isolated power supply as the LED driving power supply.

The heat sink 4 is fixed in the accommodation space of the housing 2, and the heat sink 4 includes a heat dissipation cup 41, and the bottom of the heat dissipation cup 41 (towards the light source side) is an arc bottom surface 42, and the arc A plurality of cooling holes 421 are opened on the surface and bottom surface 42 , and the setting of the cooling holes 421 is helpful for heat dissipation. The LED light source module 3 includes a substrate 31 and a plurality of LED chips 32 attached to the substrate, the substrate 31 is an arc surface substrate 31, and the arc surface substrate 31 is connected to the side of the housing 2 through buckles 23 , can be pasted together and then fixed with bolts, or can be fixed with bolts or other methods. An airflow channel 6 is formed between the arc-shaped bottom surface 42 and the arc-shaped substrate 31 , and a plurality of LED chips 32 are evenly attached to the arc-shaped substrate 31 . The arc-shaped substrate 31 is provided with diversion holes 311 on both sides of each LED chip 32, and the diversion holes 311 are also matched with the heat dissipation holes 421, and can also be set separately. The so-called separate setting means diversion The arrangement of the holes 311 and the heat dissipation holes 421 do not have a corresponding relationship, and both are arranged independently. The air guide hole 311 is connected with the airflow channel 6 to better realize air convection and heat dissipation. The arc-shaped bottom surface 42 can be made of plastic or metal material, and the use of plastic material can save costs and can be integrally formed, while the use of metal material can further dissipate heat and improve the heat dissipation effect. A plurality of heat dissipation fins 43 are evenly arranged on the heat dissipation cup 4 , and heat dissipation holes 44 are also opened on the heat dissipation fins 43 , which helps to further increase the heat dissipation area and improve the heat dissipation effect. The side surface of the air flow passage 6 communicates with the outside of the housing 2 through the air holes 24 on the housing 2 . The circuit board 5 is disposed in the connector 1 and electrically connected with the LED light source module 3 .

The cross-sectional height of the central region 61 of the airflow passage 6 is lower than the cross-sectional height of the side region 62 of the airflow passage 6. Through this design, after the airflow enters from the air hole 24 on the side of the housing 2, it first enters the The side area 62 of the relatively wide airflow channel flows to the central area 61 of the relatively narrow airflow channel, so that the pressure of the airflow becomes greater in the central area 61, and its ability to take away heat is improved, which helps to improve the heat dissipation performance .

A central cylinder 7 is provided in the accommodation space in the housing 2, and the central cylinder 7 is a metal central cylinder, one end of which is fixedly connected to the connecting head, and the other end is fixedly connected to the bottom of the cooling cup 41, which can Connections are made by bolts or welding. The central cylinder 7 is pierced with wires, and the wires are used to realize the electrical connection between the circuit board 5 and the LED light source module 3 . The metal central cylinder is used to wrap the wire to realize the electrical connection, which avoids the easy damage of the direct use of the bare wire, effectively ensures the stability of the electrical connection, and effectively prevents the aging of the wire. At the same time, the surface of the central cylinder 7 can also be set There are cooling fins 71 to further increase the cooling space in the casing and improve the cooling effect.

The lampshade 8 is made of glass or plastic material, the shell 2 is also provided with a bayonet 25 , and the lampshade is provided with a buckle 81 matching the bayonet 25 . The lampshade 8 is also provided with vent holes 82 .

In use, after the external airflow enters the airflow channel 6 from the air hole 24 on the side of the housing 2, it first enters the relatively wide airflow channel side area 62, and then flows to the relatively narrow airflow channel central area 61, so that the air flow The pressure becomes larger in the central area 61, and its ability to take away heat is improved. The airflow quickly flows out to both sides of the LED chip 32 through the guide hole 311, taking away the heat in the LED chip 32, and the heat is finally released from the air vent hole of the lampshade. 82 flow out to form a natural air convection environment, and quickly export the heat emitted by the LED lamp. Another part of the airflow entering the airflow channel 6 flows from the heat dissipation hole 421 to the inside of the housing 2, and then passes through the heat dissipation groove 22 of the housing 2 to dissipate heat to the outside, forming another natural air convection structure. The air convection structure of the layer greatly improves the heat dissipation effect of the LED bulb lamp, and the radiator adopts the heat dissipation cup 41 at the bottom of the arc surface, which matches the properties of the arc surface substrate 31, and can further absorb heat quickly and dissipate the heat Take it away from the metal radiator.

Although the utility model has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the utility model defined by the appended claims, changes in form and details may be made. Making various changes to the utility model is within the protection scope of the utility model. the

Claims (6)

1. A LED bulb lamp, characterized in that: it includes a connector, a housing, an LED light source module, a heat sink, a circuit board and a lampshade, the connector is connected to the upper part of the housing, and there is an accommodation space in the housing , there are a plurality of cooling grooves around the casing, the radiator is fixed in the housing space of the casing, the radiator includes a cooling cup, the bottom of the cooling cup is an arc bottom surface, and the LED The light source module includes a base plate and a plurality of LED chips. The base plate is an arc-surface base plate arranged at the bottom of the housing, and the LED chips are evenly pasted on the arc-surface base plate. An air flow channel is formed between them, and the air flow channel communicates with the outside of the housing through the air hole on the housing, and a guide hole is opened on both sides of each LED chip on the substrate, and the guide hole communicates with the air flow channel , the circuit board is arranged in the connector and electrically connected with the LED light source module. 2. The LED bulb lamp according to claim 1, wherein a plurality of cooling holes are opened on the bottom surface of the circular arc surface. 3 . The LED bulb lamp according to claim 1 , wherein the cross-sectional height of the central region of the airflow channel is lower than the cross-sectional height of the side regions of the airflow channel. 4 . 4. The LED bulb lamp according to claim 1, characterized in that: a central cylinder is provided in the accommodation space in the housing, and the central cylinder is a metal central cylinder, one end of which is connected to the set The connecting head is connected, and the other end is connected to the bottom surface of the arc surface of the heat dissipation cup. A wire is passed through the central column, and the wire is used to realize the electrical connection between the circuit board and the LED light source module. 5 . The LED bulb lamp according to claim 1 , wherein a plurality of heat dissipation fins are uniformly arranged on the heat dissipation cup, and heat dissipation holes are also opened on the heat dissipation fins. 5 . 6 . The LED bulb lamp according to claim 1 , wherein the width of the cooling grooves ranges from 1mm to 5mm, and the distance between adjacent cooling grooves ranges from 1mm to 10mm.