CN212132092U - Lamp set - Google Patents

Abstract

The application provides a lamp, comprising: a housing; a light source, arranged in the housing; a plurality of fins, arranged in the housing and thermally connected to the light source, the plurality of fins are arranged with a certain distance gap; an airflow generating device, It is arranged in the housing and located at one end of the plurality of fins away from the light source, and the air flow generated by the air flow generating device flows toward the direction of the light source and is jointly guided by the light source and the plurality of fins to diffuse. After the airflow generating device drives the air into the lamp, the airflow generated by the airflow generating device flows in the direction of the light source, and is guided and diffused by the light source and a plurality of fins. Efficiency of heat-generating device conduction to air; applying the lamp provided in this embodiment to an LED lamp is beneficial to reduce the temperature of the LED lamp and improve the service life of the chip of the LED lamp.

Description

a lamp

technical field

The present application relates to the technical field of film and television lighting, and in particular, to a lamp.

Background technique

With the continuous maturity and development of lighting technology, LED lamps have been widely used. They not only have the advantages of small size, low calorific value, and energy saving, but also can work normally in various working environments and have a wide range of applications. For high-power LED lamps, the overall heat dissipation performance of the lamps will directly affect the light decay of the LED lamps and the service life of the chips. It can be said that for LED lamps, heat dissipation performance is an extremely important technical indicator.

The light-emitting core of existing high-power LED lamps is often an LED light-emitting unit welded on an aluminum or silicon substrate. Such LED lamps dissipate heat by closely attaching the back of the substrate to the shell. The surface area of the housing is limited, and its ability to conduct heat to air or other media is not strong, thereby limiting the performance of LED lamps in all aspects.

Utility model content

The purpose of the present application is to provide a lamp, which aims to solve the technical problem of low heat exchange efficiency between the traditional heat dissipation structure and air or other media.

The present application is implemented in this way, a lamp includes: a lamp, characterized in that it includes: a casing; a light source, arranged in the casing; a plurality of fins, arranged in the casing and the light source thermally connected, a plurality of the fins are arranged with a certain distance gap; an airflow generating device is arranged in the casing and is located at one end of the multiple fins away from the light source, and the airflow generating device generates The airflow flows toward the direction of the light source and is diffused by being jointly guided by the light source and the plurality of fins.

In an embodiment of the present application, the light source includes a substrate and a plurality of light-emitting units, and a plurality of the light-emitting units form an array and are disposed attached to the substrate; the airflow generating device is disposed opposite to the substrate, and the air flow generating device is disposed opposite to the substrate. The casing is provided with a ventilation hole and an air outlet, the air flow generating device is arranged facing the ventilation hole, and the air outlet is arranged around the casing; the lamp also includes a plurality of air guide plates for guiding the air flow , the air guide plate is arranged around the ventilation hole; the air flow generated by the air flow generating device flows through the ventilation hole, the space between the fins and the air flow in sequence under the guidance of the air guide plate Air outlet.

In an embodiment of the present application, the air guide plate includes a V-shaped air guide portion, and connecting portions provided at both ends of the V-shaped air guide portion, and the V-shaped air guide portion is used to The airflow entering the lamp at the air inlet is evenly directed between the fins; the connecting portion connects the V-shaped air guide portion and the fins, and the connecting portion is used for the V-shaped air guide portion. A shield is formed between the fins and the fins to prevent the air from directly flowing out of the lamp.

In an embodiment of the present application, the lamp further includes a first heat-conducting plate, the fins and the air guide plate are both disposed in contact with the first heat-conducting plate, and the light source is in contact with the first heat-conducting plate The side of the plate facing away from the fins is provided.

In an embodiment of the present application, the airflow generating device includes a fan blade, a motor connected to the fan blade and used for driving the fan blade, and a frame for accommodating the fan blade and the motor, the The shape of the air inlet corresponds to the outer shape of the frame, and there is a gap between the frame and the air inlet.

In an embodiment of the present application, the fins are snap-fit fins, and the fins are fastened to each other to form a plurality of airflow channels that communicate with the ventilation holes and the air outlet holes.

In an embodiment of the present application, the lamp further includes a control board arranged in contact with the second heat-conducting plate, the lamp further includes a second heat-conducting plate opposite to the first heat-conducting plate, and the fins Both the sheet and the air guide plate are arranged between the first heat conduction plate and the second heat conduction plate, and an air inlet is arranged at a position opposite to the ventilation hole of the second heat conduction plate.

In an embodiment of the present application, the first heat-conducting plate is provided with a first installation hole for installing the lamp, the first installation hole is disposed at an edge position of the first heat-conducting plate, and the first heat-conducting plate is An installation hole is spaced apart from the fins, and the first installation hole is spaced apart from the air outlet.

In an embodiment of the present application, a thermally conductive pad or thermally conductive glue is arranged between the control board and the second thermally conductive plate; and a thermally conductive pad or thermally conductive glue is arranged between the light source and the first thermally conductive plate.

In an embodiment of the present application, the airflow generating device is connected to the casing, a connecting column is provided at a position opposite to the airflow generating device, and the connecting column is arranged inside the casing, The airflow generating device is connected to the connecting column.

Implementing a lamp of the present application has at least the following beneficial technical effects:

After the airflow generating device drives the air into the lamp, the airflow generated by the airflow generating device flows in the direction of the light source, and is guided and diffused by the light source and a plurality of fins. Efficiency of heat-generating device conduction to air; applying the lamp provided in this embodiment to an LED lamp is beneficial to reduce the temperature of the LED lamp and improve the service life of the chip of the LED lamp.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a lamp provided by an embodiment of the present application;

Fig. 2 is the exploded schematic diagram of the lamp shown in Fig. 1;

Fig. 3 is the enlarged schematic diagram of A place in Fig. 1;

Fig. 4 is the enlarged schematic diagram at B in Fig. 2;

Fig. 5 is the enlarged schematic diagram at C place in Fig. 2;

6 is a schematic structural diagram of a lamp provided by an embodiment of the present application;

FIG. 7 is an exploded schematic view of the light fixture shown in FIG. 6 .

The details of the symbols involved in the above drawings are as follows:

11-first heat-conducting plate; 111-first mounting hole; 12-second heat-conducting plate; 121-air inlet; 13-fins; 131-first bending part; 132-second bending part; 133-heat dissipation part; 14-wind guide plate; 141-V-shaped air guide part; 142-connection part; 15-air flow generating device; 151-fan blade; 152-motor; 153-frame; 2-control board; 3-light source; 31 - base plate; 311 - second mounting hole; 32 - light emitting unit; 4 - housing; 41 - air outlet; 42 - ventilation hole.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. Terms "top", "bottom", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outer", etc. The indicated orientation or position is based on the orientation or position shown in the drawings, which is only for the convenience of description, and should not be construed as a limitation on the technical solution. The terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance or implying indicating the number of technical features. "Plurality" means two or more, unless expressly specifically limited otherwise.

In order to illustrate the technical solutions described in the present application, a detailed description is given below with reference to the specific drawings and embodiments.

Referring to FIGS. 1 , 2 and 7 , this embodiment provides a lamp, including: a housing 4 ; a light source 3 , which is arranged in the housing 4 ; a plurality of fins 13 , which are arranged in the housing 4 and the light source 3. Thermally connected, the plurality of fins 13 are arranged with a certain distance gap; the airflow generating device 15 is arranged in the housing 4 and is located at one end of the multiple fins 13 away from the light source 3, and the airflow generated by the airflow generating device 15 is directed toward the light source 3. The direction of the light source 3 flows and is diffused by being jointly guided by the light source 3 and the plurality of fins 13 .

The light source 3 can be an LED (Light Emitting Diode, light-emitting diode) light source 3, which is used as the main heating element of the lamp, and a plurality of fins 13 arranged in gaps are arranged in contact with the light source 3. Of course, the plurality of fins 13 can also be arranged at The other heating elements such as the PCB (Printed Circuit Board, printed circuit board) control board 2 in the housing 4 are in contact; the heat generated by the heating element during the working process is conducted to the fins 13, and the fins 13 heat up; the air Under the action of the airflow generating device 15, it flows and passes through the fins 13. During this process, heat exchange occurs between the air and the fins 13. The heat of the heating elements such as the light source 3 is conducted into the air through the fins 13, and the fins 13 are cooled and cooled. Further absorb more heat from the heating element, reduce the temperature of the heating element, and realize the functions of heat dissipation and cooling.

By implementing the lamps provided in this embodiment, at least the following beneficial technical effects can be achieved:

After the airflow generating device drives the air into the lamp, the airflow generated by the airflow generating device 15 flows in the direction of the light source 3, and is guided by the light source 3 and the plurality of fins 13 to diffuse. The efficiency of conduction of heat energy from heating devices such as the light source 3 to the air is improved; applying the lamp provided in this embodiment to the LED lamp is beneficial to reduce the temperature of the LED lamp and improve the service life of the chip of the LED lamp.

Please refer to FIG. 1 , FIG. 2 and FIG. 7 , in one embodiment of the present application, the light source 3 includes a substrate 31 and a plurality of light-emitting units 32 , and the plurality of light-emitting units 32 form an array and are disposed attached to the substrate 31 ; the airflow generating device 15 Opposite to the base plate 31, the housing 4 is provided with a ventilation hole 42 and an air outlet 41, the airflow generating device 15 is arranged facing the ventilation hole 42, and the air outlet 41 is arranged around the housing 4; The air guide plate 14 is arranged around the ventilation hole 42; the air flow generated by the airflow generating device 15 flows through the ventilation hole 42, the space between the fins 13 and the air outlet hole 41 in turn under the guidance of the air guide plate 14. .

The wind deflector 14 is arranged around the ventilation holes, and the airflow generated by the airflow generating device 15 passes through the ventilation holes, enters between the fins 13 under the guidance of the wind deflector 14, and contacts the light-emitting unit and the fins 13 at the same time, which improves the air circulation Efficiency, avoiding hot air eddy currents to reside inside the luminaire, further improving the efficiency of heat flow from the luminaire to the air.

In one embodiment of the present application, the air guide plate 14 includes a V-shaped air guide portion 141 , and connecting portions 142 disposed at both ends of the V-shaped air guide portion 141 , and the V-shaped air guide portion 141 is used to transmit the air from the air inlet 121 . The airflow entering the lamp is evenly directed between the fins 13; the connecting portion 142 connects the V-shaped air guide portion 141 and the fins 13, and the connecting portion 142 is used to form a shield between the V-shaped air guide portion 141 and the fins 13 to avoid direct air flow out of the luminaire.

In an embodiment of the present application, the lamp further includes a first heat-conducting plate 11 and a second heat-conducting plate 12 arranged oppositely, and the fins 13 and the air-conducting plate 14 are both disposed between the first heat-conducting plate 11 and the second heat-conducting plate 12 During this time, the light source 3 is attached to the side of the first heat-conducting plate 11 facing away from the fins 13 , and the second heat-conducting plate 12 is provided with an air inlet 121 at a position opposite to the ventilation hole.

In addition to the light source 3, heating elements such as the PCB control board 2 can also be attached to the first heat conducting plate 11 and the second heat conducting plate 12. The heat generated by the heating element during operation passes through the first heat conducting plate 11 and the second heat conducting plate 12. The heat conduction of the second heat-conducting plate 12 is conducted to the fins 13 , and the first heat-conducting plate 11 , the second heat-conducting plate 12 and the fins 13 are heated together; Guided between the first heat conducting plate 11, the second heat conducting plate 12 and the fins 13, and spread along the space between the two adjacent fins 13, in the process, the air and the first heat conducting plate 11, the first heat conducting plate 11, the first heat conducting plate 11, the Heat exchange occurs between the two heat-conducting plates 12 and the fins 13 , the heat energy of the fins 13 of the first heat-conducting plate 11 and the second heat-conducting plate 12 is conducted into the air, and the first heat-conducting plate 11 , the second heat-conducting plate 12 and the fins 13 are cooled. And further absorb more heat from the heating element, reduce the temperature of the heating element, and realize the functions of heat dissipation and cooling.

As a preferred solution of this embodiment, a thermally conductive pad or thermally conductive glue is arranged between the control board 2 and the second thermally conductive plate 12 ; a thermally conductive pad or thermally conductive glue is arranged between the light source 3 and the first thermally conductive plate 11 to further increase the heat Efficiency of conduction from control board 2 and light source 3 to fins 13 .

Please refer to FIG. 1 and FIG. 2 , in an embodiment of the present application, the second heat-conducting plate 12 is in the shape of a rectangle, and a hole is opened in the center of the second heat-conducting plate 12 to form an air inlet 121 ; a plurality of fins 13 are disposed on the second heat-conducting plate 12 . The two ends of the length direction of the heat conducting plate 12, and each fin 13 extends along the length direction of the second heat conducting plate 12; Both sides along the two short side directions of the second heat conducting plate 12 . In this way, the fins 13 can contact the first heat-conducting plate 11 and the second heat-conducting plate 12 as much as possible to improve the heat dissipation efficiency; the air guide plate 14 is arranged between the two sets of fins 13, and the air inlet 121 is arranged in the two guide Between the air plates 14, the air guide plates 14 can evenly guide the air flow into each radiator, so that the uniformity of heat dissipation can be improved, and the heat dissipation efficiency can also be improved.

Please refer to FIG. 1 and FIG. 2 , in an embodiment of the present application, the fins 13 are snap-fit fins 13 , the number of the fins 13 is multiple, and each fin 13 is along the rectangular second heat-conducting plate 12 . The orientation of the long side is set. The fins of the snap-fit fins 13 are connected by a buckle structure (not shown in the figure), which is easy to process and manufacture, and the fin length and the number of fins of the fins 13 can be flexibly changed according to actual needs, which is conducive to reducing Design and manufacturing costs of the fins 13 .

Referring to FIG. 5 , as a specific solution of this embodiment, the snap-fit fin 13 includes a heat dissipation portion 133 , and a first bent portion 131 and a second bent portion 132 connected to both ends of the heat dissipation portion 133 . The folded part 131 and the second folded part 132 are parallel, and both the first folded part 131 and the second folded part 132 form an included angle with the heat dissipation part 133 , and the buckle structure is arranged on the first folded part 131 and/or On the second bending portion 132, a plurality of fins 13 are snapped and spliced together to form a plurality of heat sink interiors; further, the first bending portion 131 is connected to the first heat conducting plate 11, and the second bending portion The portion 132 is connected with the second heat conducting plate 12 to transfer the heat on the first heat conducting plate 11 and the second heat conducting plate 12 to the fins 13, and further to the air through the airflow.

More preferably, a thermal pad or thermal paste is arranged between the first bending portion 131 and the first heat conducting plate 11 to further enhance the heat conduction efficiency between the first heat conducting plate 11 and the fins 13; the second bending portion A thermally conductive pad or thermally conductive glue is arranged between the 132 and the second thermally conductive plate 12 to further enhance the thermal conduction efficiency between the second thermally conductive plate 12 and the fins 13 .

Please refer to FIG. 1 and FIG. 2 , in an embodiment of the present application, the first heat-conducting plate 11 is provided with a first mounting hole 111 for installing a lamp, and the first mounting hole 111 is arranged at the edge of the first heat-conducting plate 11 . And the first mounting holes 111 are spaced apart from the fins 13 . The housing 4 is provided with a protrusion in the circumferential direction, the protrusion is provided with a blind hole corresponding to the first installation hole 111, and the first installation hole 111 is fixedly connected to the blind hole through a fastener (such as a screw or a bolt, etc.), so as to The first heat conducting plate 11 is fixed in the casing 4 . Therefore, it is possible to effectively reduce the blocking of the air flow passage by the fixedly assembled fasteners, thereby ensuring smooth air flow, avoiding slow air flow in some radiators, and preventing slow or uneven heat dissipation of the lamp.

Please refer to FIG. 1 and FIG. 2 , as a specific solution of this embodiment, the first installation holes 111 are arranged around the edge of the first heat conducting plate 11 to ensure that the lamp is uniformly stressed after being installed in place, and to avoid the lamp from expanding and contracting due to heat and cold. The structure is fatigued or even damaged; more preferably, there is at least an 8mm gap between the first installation hole 111 and the fins 13 to ensure that the air path inside each radiator is unobstructed, and at the same time, it can effectively reduce the number of lamps and lanterns. noise from the airflow generating device 15.

As a preferred solution of this embodiment, a second mounting hole 311 (not shown in the figure) is provided at the position of the base plate 31 corresponding to the first mounting hole 111, and the connector can pass through the first mounting hole 111 and the first mounting hole 111 at the same time. A second mounting hole 311 opposite to the mounting hole 111 is used to mount the first heat conducting plate 11 and the light source 3 inside the casing 4 .

Referring to FIG. 1 and FIG. 3 , in an embodiment of the present application, the airflow generating device 15 is used to form an airflow flowing into the ventilation hole 42 . Further, in an embodiment of the present application, the airflow generating device 15 includes a fan blade 151 , a motor 152 for connecting the fan blade 151 and for driving the fan blade 151 , and a frame 153 for accommodating the fan blade 151 and the motor 152 . The shape of the hole 42 corresponds to the outer shape of the frame 153 , and there is a gap between the frame 153 and the ventilation hole 42 . The gap between the frame 153 and the ventilation hole 42 can reduce the influence of the vibration of the airflow generating device 15 on the lamp, and at the same time help to reduce the noise generated by the lamp during operation.

Referring to FIGS. 1 and 3 , as a specific solution of this embodiment, the frame 153 of the airflow generating device 15 is partially embedded in the air inlet 121 to reduce the thickness of the overall lamp, thereby reducing the volume of the lamp; In the case of the middle position of the second heat conducting plate 12, the frame 153 is partially embedded in the air inlet 121 to reduce the overall thickness of the lamp.

Please refer to FIG. 6 and FIG. 7 , in an embodiment of the present application, the lamp further includes a control board 2 and a light source 3 that are attached to the first heat-conducting plate 11 or the second heat-conducting plate 12 , and a housing for erecting the lamp 4. The control board 2 is printed with a circuit for controlling the light-emitting unit to emit light. Under the control of the control board 2, the light-emitting unit on the light source 3 emits light and projects into the space to form a lighting effect; The main heat source is respectively attached to the first heat-conducting plate 11 or the second heat-conducting plate 12 to improve the heat dissipation efficiency of the lamp; The control board 2 forms structural protection.

Please refer to FIG. 6 and FIG. 7 , in an embodiment of the present application, the control board 2 is disposed in contact with the second heat conducting board 12 , and a heat conducting pad or heat conducting glue is provided between the control board 2 and the second heat conducting board 12 to enhance the The heat conduction efficiency between the control board 2 and the second heat conduction plate 12; the light source 3 is arranged on the first heat conduction plate 11, and a heat conduction pad or heat conduction glue is arranged between the light source 3 and the first heat conduction plate 11 to enhance the light source 3 and the first heat conduction plate 11. The thermal conduction efficiency between the first thermally conductive plates 11 .

For the case where the air inlet 121 is arranged at the center of the second heat-conducting plate 12, the light source 3 is attached to the first heat-conducting plate 11, and the control board 2 is attached to the second heat-conducting plate 12, so that the appearance of the light source 3 is more neat and beautiful, and at the same time, it is useful to Improve the uniformity of lighting brightness of lamps.

As a preferred solution of this embodiment, thermal vias are provided on the control board 2 . The heating elements on the control board 2 are often arranged on the side of the control board 2 facing away from the second heat conducting plate 12, and thermal vias are opened so that the heating elements can be directly connected to the second heat conducting plate 12, the heat conducting pad or the heat conducting glue through the thermal through holes. connected to improve the heat conduction efficiency between the control board 2 and the second heat conducting board 12 .

Referring to FIGS. 6 and 7 , in an embodiment of the present application, an air outlet 41 is provided at a position opposite to the inside of the housing 4 and the radiator, and the air outlet 41 is spaced from the first installation hole 111 . The air outlet hole 41 and the first installation hole 111 are arranged at intervals, which can ensure the smoothness of the air path, avoid slow air flow in part of the radiator, and prevent slow or uneven heat dissipation of the lamp.

In an embodiment of the present application, the airflow generating device 15 is connected to the housing 4 , and a ventilation hole 42 is provided at a position opposite the housing 4 and the airflow generating device 15 . Such an arrangement enables the housing 4 to support the airflow generating device 15, so that the airflow generating device 15 can be partially embedded in the lighting fixture without being connected to the lighting fixture, thereby reducing the space volume occupied by the lighting fixture; for the air inlet 121 When disposed in the middle of the second heat-conducting plate 12, the airflow generating device 15 is partially embedded in the air inlet 121 to reduce the overall thickness of the lamp.

As a specific solution of this embodiment, a connecting column (not shown in the figure) is provided at the position opposite to the air flow generating device 15 of the housing 4, and the connecting column is arranged on the side of the housing 4 facing the lamp, and the air generating device 15 Installed on the connecting column through the connecting piece. Preferably, the casing 4 is also provided with a clamping table at the position facing the airflow generating device 15, and there is a distance greater than or equal to 3 mm between the airflow generating device 15 and the body of the casing 4, that is, the height of the clamping station is greater than or equal to 3 mm, so that It can reduce the noise generated by the lamp during the working process.

In an embodiment of the present application, the housing 4 further includes a protective shell (not shown) that is clamped on the side of the light source 3 facing the light-emitting direction of the lamp, which is used to protect the light source from scratches caused by external forces. Air outlet holes 41 are also opened around the edge of the protective shell to further improve the heat dissipation performance of the lamp.

In an embodiment of the present application, the lamps can be used in different scenes such as photography and photography in the fields of film and television dramas, short videos, or stages.

The above descriptions are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (10)

1. A lamp, characterized in that, comprising: housing (4); a light source (3), arranged in the casing (4); a plurality of fins (13), arranged in the casing (4) and thermally connected to the light source (3), the plurality of the fins (13) being arranged with a certain distance gap; An airflow generating device (15), disposed in the casing (4) and located at one end of the plurality of fins (13) away from the light source (3), the airflow generated by the airflow generating device (15) It flows in the direction of the light source (3) and is guided by the light source (3) together with the plurality of fins (13) to diffuse. 2. The lamp according to claim 1, wherein the housing (4) is provided with a ventilation hole (42) and an air outlet (41), and the airflow generating device (15) is facing the ventilation A hole (42) is provided, and the air outlet hole (41) is provided around the casing (4); the lamp further comprises a plurality of air guide plates (14) for guiding airflow, the air guide plate (14) The air flow is arranged around the ventilation hole (42); the air flow generated by the air flow generating device (15) flows through the ventilation hole (42) and the air guide plate in sequence under the guidance of the air guide plate (14). (14), the space between the fins (13) and the air outlet hole (41). 3. The lamp according to claim 2, characterized in that, the air guide plate (14) comprises a V-shaped air guide portion (141), and a connection provided at both ends of the V-shaped air guide portion (141) part (142), the V-shaped air guide part (141) is used to guide the airflow entering the lamp from the ventilation hole (42) evenly between the fins (13); the connecting part (142) ) connects the V-shaped air guide portion (141) and the fins (13), and the connecting portion (142) is used to connect the V-shaped air guide portion (141) and the fins (13) Shading is formed between them to prevent air from directly flowing out of the luminaire. 4. The lamp according to claim 3, characterized in that, the lamp further comprises a first heat-conducting plate (11), and both the fins (13) and the wind guide plate (14) are attached to the first heat-conducting plate (11). A heat-conducting plate (11) is disposed, and the light source (3) is disposed on the side of the first heat-conducting plate (11) facing away from the fins (13). 5. The lamp according to claim 4, characterized in that, the lamp further comprises a second heat-conducting plate (12) disposed opposite to the first heat-conducting plate (11), and a second heat-conducting plate (12) is attached to the second heat-conducting plate (12) The provided control board (2), the fins (13) and the air guide plate (14) are both arranged between the first heat conduction plate (11) and the second heat conduction plate (12) In between, an air inlet (121) is provided at a position opposite to the ventilation hole (42) of the second heat-conducting plate (12). 6. The luminaire according to claim 5, characterized in that, a thermal pad or thermal paste is arranged between the control board (2) and the second thermal conduction plate (12); the light source (3) and the A thermally conductive pad or thermally conductive glue is arranged between the first thermally conductive plates (11). 7. The lamp according to claim 4, characterized in that, the first heat conducting plate (11) is provided with a first installation hole (111) for installing the lamp, and the first installation hole (111) is provided with at the edge position of the first heat conducting plate (11), and the first mounting holes (111) and the fins (13) are spaced apart, and the first mounting holes (111) and the air outlet holes (41) Interval setting. 8. The lamp according to claim 2, characterized in that, the airflow generating device (15) comprises a fan blade (151), a fan blade (151) connected to the fan blade (151) and used for driving the fan blade (151). A motor (152) and a frame (153) for accommodating the fan blade (151) and the motor (152), the shape of the ventilation hole (42) corresponds to the outer shape of the frame (153), and the There is a gap between the frame (153) and the ventilation hole (42). 9 . The lamp according to claim 2 , wherein the fins ( 13 ) are snap-fit fins ( 13 ), and the fins ( 13 ) are fastened to each other to form a plurality of communicating ventilations. 10 . The hole (42) and the air flow channel of the air outlet hole (41). 10. The luminaire according to claim 1, wherein the airflow generating device (15) is connected to the housing (4), and the housing (4) is opposite to the airflow generating device (15). A connecting column is provided at the position, the connecting column is arranged inside the casing (4), and the airflow generating device (15) is connected with the connecting column.

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