WO2014079132A1

WO2014079132A1 - Radiating system and radiating method of led threaded spot lamp

Info

Publication number: WO2014079132A1
Application number: PCT/CN2012/087950
Authority: WO
Inventors: 李春荣
Original assignee: 广州市雅江光电设备有限公司
Priority date: 2012-11-23
Filing date: 2012-12-29
Publication date: 2014-05-30
Also published as: CN103123105B; CN103123105A

Abstract

Disclosed a radiating system of an LED threaded spot lamp. The system comprises a case (1), a lamp head case (2), an end cover (3), a mounting seat (4), a slide seat (5), a driving apparatus (6), an LED light source (7), a radiator (8), and an optical lens (10). The case comprises a lower case (101) and an upper case (102), a radiating board is disposed between the lower case and the upper case, and radiating holes are formed in the radiating board. The radiator comprises a front end surface and radiating fins. The radiating fins are disposed on the front end surface. A ventilating groove extending to the left and the right is formed between adjacent radiating fins. Air outlets of the ventilating groove are opposite to the radiating holes. A fan is disposed on the radiator. A light barrier is disposed at the inner side of the radiating board, and a gap is formed between the radiating board and the light barrier. A radiating method of the system is as follows: an LED light source generating heat and transmitting the heat into a radiator, and meanwhile, the fan working, external cold air entering the radiator, performing heat exchange on the cold air in the radiator, the heat air being changed into hot air, and the hot air being radiated from radiating holes. The radiating system can overcome the influences of wind currents on the quality of light spots and improve the utilization rate of light.

Description

LED thread spotlight heat dissipation system and heat dissipation method

The invention relates to a heat dissipation method for an LED lamp and its LED lamp. In particular, LED threaded spotlight cooling system and heat dissipation method. Background technique

Due to the energy saving and long life of LED, the application of LED is more and more widely. At present, there is an LED lamp, as shown in Fig. 9, including the lamp housing la, the housing lb, the end cover lc, the LED light source, the radiator, the screw, a nut, a knob ld, an optical lens, a housing lb is mounted between the base housing 1a and the end cover lc, the LED light source is mounted on the heat sink, and the LED light source and the heat sink are mounted in the housing lb, and the screw is disposed In the housing, the knob Id is connected to the screw, and the knob Id is located on the rear side of the end cover lc, the nut is mounted on the LED light source or the heat sink, the screw and the nut are engaged, and the optical lens is mounted in the lamp housing la; The body la is provided with an air outlet hole in the axial direction, and the air outlet end of the air outlet hole is at the end surface of the lamp housing; the air inlet lf is provided on the end cover. When the LED lamp works, the air inlet and the air outlet form a convection. At the same time, the LED light source generates a large amount of heat, and the generated heat is transmitted to the heat sink, and the heat is dissipated into the casing by the heat sink, and the heat in the casing A small part is lost through the housing, and the other part is dissipated through the air outlet hole. Since the air outlet end of the air outlet hole is at the end of the lamp housing, light is also emitted from the end of the lamp housing, so that the air flow affects the light spot. the quality of. For those skilled in the art, if the air outlet is provided on the casing, since the LED light source is disposed in the casing, the possibility of light being emitted from the air outlet can be avoided, thereby reducing the utilization of light. At the same time, since the LED light source is displaced relative to the optical lens according to the needs of the spot, it is difficult to control the position of the air outlet to ensure that the light is not emitted from the air outlet. Summary of the invention

In order to overcome the influence of wind current on the spot quality and improve the utilization of light, the present invention provides a LED threaded spotlight heat dissipation system and a heat dissipation method.

The LED threaded spotlight heat dissipation system comprises a housing, a lamp housing, an end cover, a mounting seat, a sliding seat, a driving device, an LED light source, a heat sink and an optical lens; the lamp housing is disposed at a front end of the housing, and the end cover is disposed at the shell The rear end of the body; the mounting seat is mounted in the housing, the driving device is mounted on the mounting plate; the sliding seat is disposed on the driving device; the heat sink is disposed on the sliding seat, the LED light source is disposed on the front end surface of the heat sink, and the optical lens is disposed The housing includes a lower housing and an upper housing, a heat dissipation plate is disposed between the lower housing and the upper housing, and a heat dissipation hole is disposed on the heat dissipation plate; the lower housing and the upper housing are The heat sink, the lamp housing, the optical lens and the end cover form a cavity; the heat sink comprises a front end surface and a heat sink, the heat sink is disposed on the front end surface, and a left and right extending ventilation groove is formed between the adjacent heat sinks The air outlet of the ventilation slot is opposite to the heat dissipation hole; a fan is arranged on the heat sink; a light blocking plate is installed at a position corresponding to the heat dissipation hole on the inner side of the heat dissipation plate, and a gap is formed between the heat dissipation plate and the light blocking plate.

In the above system, since the heat dissipation plate is installed between the lower casing and the upper casing, the heat dissipation hole is disposed on the heat dissipation plate, and the air outlet of the ventilation groove is opposite to the heat dissipation hole. When the LED thread is used in the heat dissipation system of the spotlight, the LED light source is generated. Most of the heat is transferred to the radiator. Under the action of the fan, the outside wind enters the cavity, and heat exchange is performed in the radiator. The hot air is dissipated from the heat dissipation hole, and the generated wind flow is formed on the side of the casing. The light is emitted from the lamp housing, and the two do not affect each other. Therefore, the airflow generated during heat dissipation does not affect the quality of the spot. In addition, since the windshield is provided, regardless of how the LED light source changes position, under the action of the light blocking plate, the LED light source can be prevented from seeping through the heat dissipation hole, thereby improving the utilization of light.

As an embodiment, the mounting seat includes a mounting plate, a front supporting plate and a rear supporting plate. The front supporting plate is installed at a front end portion of the mounting plate, and the rear supporting plate is mounted at a rear end portion of the mounting plate; Slot, the mounting plate is inserted into the slot. The mounting plate is configured as a plug-in structure for easy installation and removal of the mount.

As a specific embodiment, the driving device includes a motor, a main pulley, a pulley, a belt, Screw and nut, the motor is fixed on the rear support plate, the main pulley is arranged on the output shaft of the motor, the pulley is arranged on the screw, the belt is arranged on the main pulley and the slave pulley, and the screw is supported by the front support plate and the rear support plate, The nut is placed on the slide and the screw and nut are engaged.

As an improvement, a guide rod is installed between the front support plate and the rear support plate, and a guide groove is provided on the slide seat, and the slide seat can slide along the guide rod under the action of the guide chute. The guide rod guides the movement of the slide. When the LED light source is adjusted, the movement precision of the LED light source can be improved, thereby improving the quality and accuracy of the adjustment spot.

The method of heat dissipation is as follows: When the LED threaded spotlight heat dissipation system works, the LED light source generates heat and transfers the heat to the heat sink. At the same time, the fan works to form a negative pressure in the cavity, and the outside cold air is located in the heat dissipation hole behind the fan through the heat dissipation plate. The gap enters the radiator, and the cold air exchanges heat in the radiator to become hot air. Under the action of the fan, the hot air passes through the gap, and the heat dissipation plate is disposed at the heat dissipation hole in front of the fan. The generated wind flow is formed on the side of the casing, and the light is emitted from the lamp housing, and the two do not affect each other. Therefore, the wind flow generated during heat dissipation does not affect the quality of the spot. In addition, since the windshield is provided, regardless of how the LED light source changes position, under the action of the light blocking plate, the LED light source can be prevented from seeping through the heat dissipation hole, thereby improving the utilization of light. DRAWINGS

Figure 1 is a perspective view of an LED luminaire.

Figure 2 is an exploded view of the LED luminaire.

Figure 3 is a cross-sectional view taken along line A-A.

Figure 4 is a cross-sectional view taken along line B-B.

Figure 5 is an assembled view of the LED light source, heat sink, fan, and drive unit.

Figure 6 is an exploded view of the LED light source, heat sink, fan, and drive unit.

Figure 7 is a perspective view of the fixed card holder.

Figure 8 is a perspective view of the movable deck.

9 is a perspective view of a prior art LED lamp. detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1 to FIG. 4, the LED lamp comprises a housing 1, a lamp cap housing 2, an end cap 3, a mounting seat 4, a slider 5, a driving device 6, an LED light source 7, a heat sink 8, a fan 9, and an optical lens. 10. The heat dissipation plate 11, the light blocking plate 12, the handle 13 and the light guide plate 14.

As shown in Fig. 2, the casing 1 is composed of a lower casing 101 and an upper casing 102. A first latching groove 1011 is provided on the upper edge of the lower casing 101, and a second latching groove 1021 is provided on the lower edge of the upper casing 102. The lower edge of the heat dissipation plate 12 is disposed in the first card slot 1011. The upper edge of the heat dissipation plate is disposed in the second card slot 1021. The rear end surface of the lamp housing 2 is provided with a stud. A protruding post is disposed on the front end surface, and a mounting hole is formed in the lower casing and the casing, and the protruding post is inserted into the mounting hole, and the lower casing 101 and the upper casing 102 are positioned and installed by the lamp cap casing and the end cap. A slot 1012 is provided in the inner wall of the lower case. A cavity is formed by the lower case, the upper case, the heat sink, the cap housing, the optical lens, and the end cap.

As shown in FIG. 5 and FIG. 6, the mounting base 4 includes a mounting plate 401, a front supporting plate 402 and a rear supporting plate 403. The mounting plate 401 is inserted into the slot 1012, and the front supporting plate 402 is mounted on the mounting plate. The front end portion, the rear support plate 403 is mounted at the rear end portion of the mounting plate.

As shown in FIG. 5 and FIG. 6 , the sliding seat 5 includes a base 501 , a fixing plate 502 and a connecting post 503 . The sliding block 5011 is disposed on the base 501 . The fixing plate 502 is fixed on the base 501 , and the connecting post 503 is connected to Between the two fixing plates 502, the heat sink 8 and the fan are fixed by the two fixing plates.

The LED light source 7 is mounted on the front end surface of the heat sink 8. The fan 9 is mounted on the rear end surface of the heat sink. The heat sink 8 has a front end surface 801 and a heat sink 802. The heat sink 802 is disposed on the front end surface 801 to dissipate heat. The sheets are parallel to each other, and a ventilation groove is formed between adjacent fins, and a through groove extending left and right of the ventilation groove, and an air outlet of the ventilation groove faces the heat dissipation hole.

As shown in FIG. 3, FIG. 5 and FIG. 6, the driving device 6 includes a motor 601 and a main pulley.

602, from the pulley 603, the belt 604, the screw 605 and the nut 606, the motor 601 is fixed behind On the support plate, the main pulley 602 is disposed on the output shaft of the motor 601, the pulley 603 is disposed on the screw 605, the belt 604 is disposed on the primary pulley 602 and the secondary pulley 603, and the screw 605 is provided by the front support plate 402 and the rear support plate 403. The nut 606 is supported on the base 501, and the screw 605 and the nut 606 are engaged. When the motor 601 is in operation, the motor 601 drives the main pulley 602 to rotate, the main pulley 602 rotates from the pulley 603 through the belt 604, and the screw 605 rotates from the pulley 603. Under the action of the nut 606, the sliding seat 5 can move linearly, thereby achieving The purpose of adjusting the distance between the LED light source 7 and the optical lens. In order to improve the movement precision of the sliding seat and thereby improve the precision of the movement of the LED light source, a guiding rod 15 is installed between the front supporting plate 402 and the rear supporting plate 402, and the seat body can slide along the guiding rod under the action of the guiding sliding groove.

The optical lens 10 is a threaded lens and is mounted in the cap housing 3. The heat dissipation plate 11 is provided with a heat dissipation hole 111. A light barrier plate 12 is mounted on a position corresponding to the heat dissipation hole on the inner side of the heat dissipation plate 11, and a gap is formed between the heat dissipation plate and the light barrier plate. A heat dissipation plate 11 is disposed on the left and right sides of the LED light source 7. Since the LED light source moves, after the light barrier is disposed, part of the residual light does not leak out from the heat dissipation hole, thereby improving the utilization of light.

The handle 13 is mounted on the heat sink 11.

A fixed card holder 17 and a movable card holder 18 are mounted on the lamp housing 2. As shown in FIG. 7, the fixed card holder 17 has a first card slot 171; the movable card holder 18 includes a base 181 and a movable buckle 182, and the movable buckle 182 is connected to the base 181 by a pin 183. The torsion spring 184 is sleeved on the pin 183, and the other end of the torsion spring 184 is fastened to the movable buckle. The movable buckle has a second card slot 185; The light guide plate 14 is disposed on a card slot 171 and the second card slot 185. The light guide plate may also be a light guide tube. When the movable buckle is opened, the light guide plate or the light guide tube can be detached from the first card slot and the second card slot.

As shown in FIG. 2, a circuit board 19 is integrated on the end cover 3, and a connector 20 and a knob 21 connected to the circuit board are mounted on the end cover 3, and the circuit board is integrated on the end cover, so that the end cover can be completely disassembled for maintenance. , reduce maintenance costs. In the present invention, since the heat dissipation plate is installed between the lower casing and the upper casing, the heat dissipation hole is disposed on the heat dissipation plate, and the air outlet of the ventilation groove is directly opposite to the heat dissipation hole. When the LED thread is used for the heat dissipation system of the spotlight, the LED light source is operated. Most of the heat generated is transmitted to the heat sink. Under the action of the fan, the outside wind enters the cavity, and heat is exchanged in the heat sink. The hot air is dissipated from the heat dissipation hole, and the generated wind flow is formed in the casing. On the side, the light is emitted from the lamp housing, and the two do not affect each other. Therefore, the airflow generated during heat dissipation does not affect the quality of the spot. In addition, since the windshield is provided, regardless of how the LED light source changes position, under the action of the light blocking plate, the LED light source can be prevented from seeing through the heat dissipation hole, thereby improving the utilization of light.

The heat dissipation method of the present invention is: when the LED threaded spotlight heat dissipation system is working, the LED light source 7 generates heat, and transfers the heat to the heat sink 8, while the fan 9 operates to form a negative pressure in the cavity, and the outside cold air passes through the heat dissipation plate 11 The vents and gaps at the rear of the fan enter the heat sink 8. The cold air exchanges heat in the heat sink 8 to become hot air. Under the action of the fan, the hot air passes through the gap, and the heat sink is scattered in the heat vent hole in front of the fan. When the spot needs to be adjusted, the LED light source 7 is displaced by the motor. At this time, due to the action of the light blocking plate, no matter which position the LED light source 7 is, the light of the LED light source 7 does not pass through the heat dissipation hole. Thereby increasing the utilization of light.

In the present invention, "front" refers to one end of the cap housing, "rear" refers to one end of the end cap, and "upper" refers to the upper side in FIG.

Claims

claims

1. An LED threaded spotlight cooling system, including a housing, a lamp holder housing, an end cover, a mounting base, a sliding seat, a driving device, an LED light source, a radiator and an optical lens; the lamp holder housing is located at the front end of the housing, The end cover is located at the rear end of the casing; the mounting base is installed in the casing, and the driving device is installed on the mounting plate; the sliding seat is located on the driving device; the radiator is located on the sliding seat, and the LED light source is located on the front end of the radiator On the top, the optical lens is provided in the lamp holder housing; It is characterized in that: the housing includes a lower housing and an upper housing, a heat dissipation plate is provided between the lower housing and the upper housing, and a heat dissipation hole is provided on the heat dissipation plate; A cavity is formed by the lower housing, the upper housing, the heat sink, the lamp holder housing, the optical lens and the end cover; the heat sink includes a front end surface and a heat sink, and the heat sink is located on the front end surface, adjacent to the heat sink. There are ventilation slots extending left and right, and the air outlet of the ventilation slot is facing the heat dissipation hole; a fan is provided on the radiator; a light baffle, a heat dissipation plate and a baffle are installed on the inside of the heat sink at a position corresponding to the heat dissipation hole. A gap is formed between the light plates.

2. The LED threaded spotlight cooling system according to claim 1, characterized in that: the mounting base includes a mounting plate, a front support plate and a rear support plate, the front support plate is installed at the front end of the installation plate, and the rear support plate Installed on the rear end of the mounting plate; a slot is provided on the lower shell, and the mounting plate is inserted into the slot.

3. The LED threaded spotlight cooling system according to claim 2, characterized in that: the driving device includes a motor, a main pulley, a slave pulley, a belt, a screw and a nut, the motor is fixed on the rear support plate, and the main pulley is On the output shaft of the motor, the slave pulley is set on the screw, the belt is set on the main pulley and the slave pulley, the screw is supported by the front support plate and the rear support plate, the nut is set on the slide seat, and the screw and nut mesh.

4. The LED threaded spotlight heat dissipation system according to claim 3, characterized in that: a guide rod is installed between the front support plate and the rear support plate, a guide slide is provided on the slide, and the slide is in the guide slide It can slide along the guide rod under the action of .

5. The LED threaded spotlight cooling system according to claim 1, characterized in that: the optical lens is a threaded mirror.

6. A heat dissipation method for an LED threaded spotlight cooling system, characterized by: The LED threaded spotlight cooling system includes a housing, a lamp holder housing, an end cover, a mounting base, a sliding seat, a driving device, an LED light source, a radiator and an optical lens ; The lamp holder housing is located at the front end of the housing, and the end cover is located at the rear end of the housing; the mounting base is installed in the housing, and the driving device is installed on the mounting plate; the sliding seat is located on the driving device; the radiator is located on On the sliding seat, the LED light source is located on the front end of the radiator, and the optical lens is located in the lamp holder housing; the housing includes a lower housing and an upper housing, and a heat dissipation plate is provided between the lower housing and the upper housing. The heat sink is provided with heat dissipation holes; a cavity is formed by the lower shell, the upper shell, the heat sink, the lamp holder shell, the optical lens and the end cover; the heat sink includes a front end surface and a heat sink, and the heat sink is located on On the front face, ventilation slots extending left and right are formed between adjacent heat sinks, and the air outlets of the ventilation slots are facing the heat dissipation holes; a fan is provided on the radiator; and is installed on the inside of the heat sink plate at a position corresponding to the heat dissipation hole. There is a light baffle, and a gap is formed between the heat sink and the light baffle;

The heat dissipation method is: When the LED threaded spotlight cooling system is working, the LED light source generates heat and transfers the heat to the radiator. At the same time, the fan works, forming a negative pressure in the cavity. The outside cold air passes through the heat dissipation holes on the heat sink behind the fan. , the gap enters the radiator, and the cold air undergoes heat exchange in the radiator and becomes hot air; under the action of the fan, the hot air is emitted through the gap and the heat dissipation hole of the heat sink in front of the fan.

7. The heat dissipation method of the LED threaded spotlight heat dissipation system according to claim 6, characterized in that: the mounting base includes a mounting plate, a front support plate and a rear support plate, and the front support plate is installed at the front end of the installation plate, The rear support plate is installed at the rear end of the installation plate; a slot is provided on the lower shell, and the installation plate is inserted into the slot.

8. The heat dissipation method of the LED threaded spotlight heat dissipation system according to claim 7, characterized in that: the driving device includes a motor, a main pulley, a slave pulley, a belt, and a screw. and nuts, the motor is fixed on the rear support plate, the main pulley is set on the output shaft of the motor, the slave pulley is set on the screw, the belt is set on the main pulley and the slave pulley, the screw is supported by the front support plate and the rear support plate, the nut It is located on the sliding seat, and the screw rod and nut mesh.

9. The heat dissipation method of the LED threaded spotlight heat dissipation system according to claim 8, characterized in that: a guide rod is installed between the front support plate and the rear support plate, a guide slide is provided on the slide seat, and the slide seat is on It can slide along the guide rod under the action of the guide chute.

10. The heat dissipation method of the LED threaded spotlight heat dissipation system according to claim 6, characterized in that: the optical lens is a threaded mirror.