CN204284987U - A kind of LED - Google Patents

Abstract

The utility model relates to an LED lamp, which comprises a lamp body. The lamp body is provided with a radiator, a light source and a circuit board. The first end of the lamp body is also provided with a lamp holder. Adapted, hollow shell, with a heat conduction fin arranged radially inside the shell; the shell and the heat conduction fin are connected by heat dissipation fins, and an airflow channel is formed between each heat dissipation fin, and the light source is arranged on the second side of the heat conduction fin close to the lamp body On the side of the end, the circuit board is arranged on the side of the heat conduction plate close to the first end of the lamp body, and the circuit board is respectively connected with the light source and the lamp holder; the lamp body is provided with a vent corresponding to the airflow channel. The LED lamp can dissipate heat through the exchange of hot and cold air at the air vent, and at the same time dissipate heat from all directions to the heat dissipation fins and the shell in time, with short heat dissipation transmission path, fast heat dissipation and high heat dissipation efficiency.

Description

A kind of LED light

technical field

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

Background technique

LED lamps are widely used for their long life, low energy consumption, energy saving and environmental protection, etc., but LED lamps need to emit a lot of heat when they work, which directly affects the life and stability of lamps. A variety of LED lamps with good heat dissipation functions have appeared thereupon.

For example, in the Chinese utility model patent "A LED Lamp" with the authorized announcement number CN202812905U (application number 201220420138.3), the light source component is installed on one end of the radiator through the cooperation of the thermal pad. Guided to the radiator, but the heat of the light source component and the heat transfer path of the thermal pad are long, and one end of the radiator cannot dissipate the heat in a timely manner, which easily makes the heat accumulate at one end of the radiator, and the heat dissipation efficiency is low.

Utility model content

The technical problem to be solved by the utility model is to provide an LED lamp which not only can realize ventilation but also has high heat dissipation efficiency in view of the above-mentioned prior art.

The technical solution adopted by the utility model to solve the above problems is: an LED lamp, including a lamp body, a radiator, a light source and a circuit board are arranged in the lamp body, and a lamp cap is also arranged at the first end of the lamp body, so The lampshade is provided on the outer cover of the light source, and it is characterized in that: the radiator includes a hollow shell that is compatible with the lamp body, and a heat conduction sheet is arranged radially inside the shell; the shell and the The heat-conducting fins are connected by heat-dissipating fins, air flow channels are formed between the heat-dissipating fins, the light source is arranged on the side of the heat-conducting sheet close to the second end of the lamp body, and the circuit board is arranged on the heat-conducting sheet close to the lamp body On one side of the first end, the circuit board is respectively connected with the light source and the lamp holder; the lamp body is provided with an air vent corresponding to the airflow channel.

In order to optimize the irradiation effect of the light source and facilitate the heat dissipation of the reflector, the heat conduction sheet is also connected with a reflector matched with the light source, and the heat dissipation fins are in contact with the reflector and placed on the A cavity suitable for installing the reflector is formed in the casing.

In order to enhance the heat dissipation effect of the lampshade, a cover body is fitted and extended inside the lampshade toward the reflector, and the cover body is arranged around the light source.

In order to increase the heat dissipation area, the circumference of the heat conduction sheet is extended toward the first end of the lamp body, and an edge is provided, and the housing, cooling fins and the edge form a ventilation channel corresponding to the airflow channel at the first end of the housing. mouth.

In order to prevent the circuit failure caused by the heat of the circuit board and ensure the safety of the circuit, an insulating sheet is also arranged between the heat conducting sheet and the circuit board, and the insulating sheet is connected to the heat conducting sheet through a connecting column, and the heat conducting sheet corresponds to A connecting hole is provided at the position of the connecting column; the circuit board is fixed in the lamp body and is arranged in contact with the insulating sheet, and the circuit board is electrically connected to the light source through the insulating sheet through a wire.

In order to facilitate the heat dissipation of the circuit board, a plurality of small heat dissipation fins are arranged on the side of the heat conduction sheet close to the first end of the lamp body along the radial direction, and the insulating sheet is arranged in contact with the small heat dissipation fins.

Conveniently, said vents comprise at least two.

In order to increase the heat dissipation area of the lamp body, the vents communicate with each other to form a slot on the lamp body, and the slots are connected by a plurality of fin-shaped connecting ribs.

In order to facilitate the installation of the light source, a limit key is arranged on the heat conducting sheet, and the light source is installed in the space surrounded by the limit key.

Compared with the prior art, the utility model has the advantage that: the heat conduction sheet in the LED lamp is arranged in the shell of the radiator and connected with the shell through the heat dissipation fins, the heat generated by the light source can be transferred to the heat sink through the heat conduction sheet in time. On the heat dissipation fins and the shell of the radiator, the heat is dissipated through the exchange of hot and cold air through the vents. Wherein, the heat conduction fin can dissipate heat from all directions to the heat dissipation fins and the shell in time because of its setting position, and the heat dissipation transmission path is short, the heat dissipation is fast, and the heat dissipation efficiency is high.

Description of drawings

Fig. 1 is a perspective view of an LED lamp in Embodiment 1 of the present utility model.

Fig. 2 is a three-dimensional exploded view of the LED lamp in Embodiment 1 of the present utility model.

Fig. 3 is a three-dimensional exploded view of another angle of the LED lamp in Embodiment 1 of the present utility model.

Fig. 4 is a cross-sectional view of the LED lamp in Embodiment 1 of the present utility model.

Fig. 5 is a partial cross-sectional view of the LED lamp in Embodiment 1 of the present utility model.

Fig. 6 is a perspective view of the LED lamp in Embodiment 2 of the present utility model.

Fig. 7 is a three-dimensional exploded view of the LED lamp in Embodiment 2 of the present utility model.

Fig. 8 is a three-dimensional exploded view of another angle of the LED lamp in Embodiment 2 of the present utility model.

Fig. 9 is a cross-sectional view of the LED lamp in Embodiment 2 of the present utility model.

Fig. 10 is a partial cross-sectional view of the LED lamp in Embodiment 2 of the present utility model.

Fig. 11 is a perspective view of the lamp body in Embodiment 2 of the present utility model.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

Embodiment one

As shown in Figures 1 to 5, the LED lamp in this embodiment includes a lamp body 1, a radiator, a light source 2 and a circuit board 3 are arranged inside the lamp body 1, and a lamp cap is provided on the first end of the lamp body 1. 4. The second end of the lamp body 1 is connected with a lampshade 5 , and the lampshade 5 covers the light source 2 .

Wherein the heat sink includes a hollow housing 61 that is compatible with the lamp body 1, and a heat conduction fin 7 is arranged radially inside the housing 61, and the heat conduction fin 7 can divide the housing 61 into two cavities, and then place it here The heating element in the two cavities can quickly transmit heat to the radiator, which can improve the heat dissipation efficiency. The shell 61 and the heat conduction fin 7 are connected by a plurality of heat dissipation fins 62, and an air flow channel is formed between each heat dissipation fin 62, so that the heat conduction fin 7 can quickly pass the heat transferred to it in multiple directions through the fins. For heat dissipation, the heat transfer path is short and there are many directions, and the heat will not be concentrated at the end of the fin. In order to increase the heat dissipation area of the heat conduction sheet 7 and increase the heat transfer rate of the heat conduction sheet 7 at the same time, the circumference of the heat conduction sheet 7 is extended toward the first end of the lamp body 1 and provided with an edge 71 , the housing 61 and the heat dissipation fins 62 And the edge 71 forms a vent 63 at the first end of the housing 61 corresponding to the airflow channel. A vent 11 is opened on the lamp body 1 corresponding to the air flow channel and the vent 63 . Then the external air can enter the lamp body 1 through the vent 11 and enter the airflow passage through the vent 63 to realize the heat exchange of the air in the radiator, thereby realizing the cooling effect. A plurality of small heat dissipation fins 64 are arranged on the side of the heat conduction fin 7 near the first end of the lamp body 1 along the radial direction, and the periphery of the small heat dissipation fins 64 is also in contact with the edge 71 of the heat conduction fin 7 .

A side of the heat conducting sheet 7 close to the first end of the lamp body 1 is provided with a circuit board 3 , and the circuit board 3 is respectively connected with the light source 2 and the lamp holder 4 . In order to facilitate the heat dissipation of the circuit board 3 and prevent the circuit board 3 from malfunctioning due to heat, an insulating sheet 9 is also arranged between the heat conducting sheet 7 and the circuit board 3 , and the insulating sheet 9 is arranged in contact with the small cooling fins 64 . The insulating sheet 9 is connected to the thermally conductive sheet 7 through the connecting post 91, and the connecting hole 72 is provided on the thermally conductive sheet 7 corresponding to the position of the connecting post 91. 7 connections. There is a slot for fixing the circuit board 3 inside the lamp body 1, the circuit board 3 is fixed in the slot and arranged in contact with the insulating sheet 9, and the circuit board 3 is electrically connected with the light source 2 through the insulating sheet 9 through the wire. This structural setting makes the heat generated by the circuit board 3 in the working process quickly transfer from the insulating sheet 9 to the small cooling fins 64 to dissipate heat. In addition, the small cooling fins can also quickly transfer heat through the heat conducting fins 7 To the heat dissipation fins 62 and the housing 61, the heat dissipation speed is fast. In addition, a part of the circuit board 3 will be in the cavity formed by the housing 61 and the heat conducting sheet 7, and as the heat on the circuit board 3 dissipates, the heat can also be directly transferred to the heat sink in the cavity, and there are many ways to dissipate heat. .

The light source 2 is arranged on the side of the heat conduction sheet 7 close to the second end of the lamp body 1. In order to facilitate the installation of the light source 2, the heat conduction sheet 7 is also provided with a limit key 73, and the light source 2 is installed in the space surrounded by the limit key 73. The heat generated by the light source 2 can be transferred to the heat sink through the heat conducting sheet 7, so as to realize rapid heat dissipation. In order to optimize the irradiation effect of the light source 2 and facilitate the heat dissipation of the reflector 8, the heat conduction sheet 7 is also connected with a reflector 8 matched with the light source 2, and the heat dissipation fins 62 and the reflector The cover 8 is in contact with and forms a cavity in the casing 61 that is adapted to be installed with the reflector 8 . On the one hand, the contact between the reflector 8 and the cooling fins 62 and the heat conducting sheet 7 can realize fast heat transfer and heat dissipation. On the other hand, the reflector 8 is located in the cavity formed by the heat conducting sheet 7 and the housing 61 of the radiator, so the heat emitted by the reflector 8 can also be quickly absorbed by the radiator, and the heat transfer rate is fast.

In order to enhance the heat dissipation effect of the lampshade 5 , a cover body 51 is fitted and extended inside the lampshade 5 toward the reflector 8 , and the cover body 51 is arranged around the light source 2 . At the same time, the cover body 51 is also located in the cavity formed by the heat conducting sheet 7 and the housing 61 of the radiator, and the heat dissipation rate is fast.

Embodiment two

As shown in FIGS. 6 to 11 , the difference between this embodiment and the first embodiment is that no cover body 51 is provided on the lampshade 5 . The heat conduction sheet 7 is not provided with a limit key 73, but directly connects the light source to the heat conduction sheet 7 by screws, and the side of the heat conduction sheet 7 close to the first end of the lamp body 1 is not provided with a plurality of small cooling fins 64, which are insulated. The sheet 9 is attached to the heat conduction sheet 7 through the connecting column 91 . In this way, the insulating sheet 9 can also quickly transfer the dissipated heat to the heat conducting sheet 7 for heat dissipation, and the heat dissipation speed is fast. In order to increase the heat dissipation area of the lamp body 1, the vents 11 communicate with each other to form a slot on the lamp body 1, and the slots are connected by a plurality of fin-shaped connecting ribs 12, and the connecting ribs 12 increase the The contact area between the body 1 and the air increases the heat dissipation rate.

Claims (9)

1. a LED, comprise lamp body (1), radiator, light source (2) and circuit board (3) is provided with in described lamp body (1), the first end of described lamp body (1) is also provided with lamp holder (4), lampshade (5) is arranged with outside described light source (2), it is characterized in that: described radiator comprise one with described lamp body (1) suitable, the housing (61) of hollow, described housing (61) interior radial direction is provided with a conducting strip (7); Be connected by radiating fin (62) between described housing (61) with described conducting strip (7), each radiating fin forms gas channel between (62), described light source (2) is arranged on described conducting strip (7) on the side of lamp body (1) second end, described circuit board (3) is arranged at the side of described conducting strip (7) near lamp body (1) first end, and described circuit board (3) is connected with described lamp holder (4) with described light source (2) respectively; Described lamp body (1) is upper offers ventilating opening (11) corresponding to described gas channel.

2. LED according to claim 1, it is characterized in that: described conducting strip (7) is also connected with the reflection shield (8) with described light source (2) suitable installation, described radiating fin (62) contacts with described reflection shield (8) and in described housing (61), forms a cavity installed with the described reflection shield of adaptation (8).

3. LED according to claim 2, it is characterized in that: an adaptive extended cover body (51) in reflection shield (8) described in the interior side direction of described lampshade (5), described cover body (51) is around in described light source (2) around.

4. LED according to claim 1, it is characterized in that: the border of described conducting strip (7) is to the extended edge (71) in direction of lamp body (1) first end, and described housing (61), radiating fin (62) and edge (71) correspond to described gas channel at the first end of housing (61) and form blow vent (63).

5. LED according to claim 1, it is characterized in that: between described conducting strip (7) and described circuit board (3), be also provided with insulating trip (9), described insulating trip (9) connects on described conducting strip (7) by joint pin (91), and the upper position corresponding to joint pin (91) of described conducting strip (7) is provided with connecting hole (72); Described circuit board (3) to be fixed in described lamp body (1) and contact with described insulating trip (9) and arranges, and described circuit board (3) passes described insulating trip (9) by wire and is electrically connected with described light source (2).

6. LED according to claim 5, it is characterized in that: described conducting strip (7) is radially also provided with multiple little radiating fin (64) on the side of lamp body (1) first end, and described insulating trip (9) contacts with described little radiating fin (64) and arranges.

7. LED according to claim 1, is characterized in that: described ventilating opening (11) comprises at least two.

8. LED according to claim 7, is characterized in that: each ventilating opening (11) is interconnected and slots in the upper formation one of described lamp body (1), and described fluting is connected by multiple fin dowel.

9. the LED according to the arbitrary claim of claim 1 ~ 8, it is characterized in that: described conducting strip (7) is provided with positive stop key (73), described light source (2) is arranged in the space that described positive stop key (73) encloses.