CN104235804B - LED (light emitting diode) projection lamp - Google Patents

Abstract

The invention discloses a novel LED projecting light, which comprises a rear lamp housing with an opening at the front end, and a front lamp cover forming a cavity of a lamp is arranged on the front end of the rear lamp housing. The gist of the reflective reflector is that the outer wall of the rear lamp housing is provided with a rainwater temperature control probe for detecting whether it is raining outside, and an air cooling device is provided in the cavity of the lamp outside the reflector. The air-cooling device includes an air inlet pipe and an air exhaust pipe that are arranged oppositely on the two inner sides of the rear lamp housing and communicate with the outside world. The suction fan entering the cavity of the lamp and the exhaust fan connected with the exhaust pipe to discharge the hot air from the cavity of the lamp are provided with a control air intake pipe and an exhaust pipe in the air intake pipe and the exhaust pipe Solenoid valve that opens and closes. Through the above settings, the present invention has excellent heat dissipation performance and waterproof performance.

Description

A kind of LED flood light

【Technical field】

The invention belongs to the technical field of lighting, and in particular relates to an efficient heat dissipation LED floodlight.

【Background technique】

With the continuous development of the LED industry, LED energy-saving lighting technology has also been continuously improved. High-power LED floodlights have more and more application fields, and the heat dissipation and waterproof requirements of high-power LED floodlights are also being paid more and more attention. . However, the current high-power LED floodlights generally have problems such as unsatisfactory heat dissipation, bulky appearance, difficult maintenance caused by non-modular design, and inability to expand power. In order to meet the needs of the market, people urgently need to develop a new generation of LED high-power floodlights from the aspects of appearance, cost, heat dissipation, installation, and modular design. The heat sink of the traditional high-power LED floodlight mainly relies on the one-piece die-cast aluminum shell to dissipate heat. The heat dissipation effect is not ideal, the waterproof performance is not good, and the working life in rainy days is short.

【Content of invention】

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a high-power waterproof LED floodlight with high heat dissipation effect, easy maintenance, good sealing effect and low cost, which can efficiently dissipate heat.

The present invention is achieved through the following technical solutions:

An LED floodlight, comprising a rear lamp housing 2 with an open front end, the front end of the rear lamp housing 2 is docked with a front lamp cover 1 forming a lamp cavity 4, and a light-emitting component is arranged in the lamp cavity 4 3 and a reflector 5 for reflecting light, which is characterized in that: a rainwater temperature control probe 8 for detecting whether it is raining outside is provided on the outer wall of the rear lamp housing 2, and the lamp cavity 4 outside the reflector 5 An air-cooling device 7 is provided inside, and the air-cooling device 7 includes an air inlet pipe 701 and an air exhaust pipe 702 arranged oppositely on the two inner sides of the rear lamp housing 2 and communicated with the outside world. The bottom of the rear lamp housing 2 A suction fan 703 connected to the air inlet pipe 701 for blowing external air into the cavity 4 of the lamp and a suction fan 703 connected to the exhaust pipe 702 for blowing the hot air in the cavity 4 of the lamp are respectively provided. The exhaust fan 704 is provided with a solenoid valve 705 for controlling the opening and closing of the air inlet pipe 701 and the air exhaust pipe 702 .

The above-mentioned LED floodlight is characterized in that: the electromagnetic valve 705 includes an electromagnetic coil 7051, a valve stem 7052, a valve core 7053 and a spring 7054, and the valve core 7053 includes a core cap 70531 and the core cap 70531 Connected core rod 70532, the inner walls of the air inlet pipe 701 and the air exhaust pipe 702 are provided with annular flanges 707 and two concentric large cylindrical bodies 708 and small cylindrical bodies 709 fixed on the inner walls of the pipes and communicated with the outside world , the core cap 70531 fits with the annular flange 707 provided on the inner wall of the tube, the core rod 70532 is inserted into the small cylindrical body 709 and fits with its inner wall, and the large cylindrical body 708 and the small cylindrical body An annular groove 706 is formed between 709, and a plurality of rods for fixing the small cylindrical body 709 on the inner wall of the large cylindrical body 708 are arranged in the annular groove 706, and the spring 7054 is arranged on the core rod The periphery of 70532 and one end is against the one end surface of the core cap 70531 and the other end is against the rod. The electromagnetic coil 7051 and the valve rod 7052 connected to it are arranged at the inner end of the tube, and the other end of the valve rod 7052 is Pressing against the other end surface of the core cap 70531, both the suction fan 703 and the exhaust fan 704 are connected to the pipe wall, and the communication point is located between the annular flange 707 and the electromagnetic coil 7051.

The above-mentioned LED floodlight is characterized in that: the rods are three and fixed at 120 degrees to each other between the inner wall of the large cylindrical body 708 and the outer wall of the small cylindrical body 709, and the core rod 70532 is provided with A plurality of ribs 70533 cooperating with the small cylindrical body 709.

The above-mentioned LED floodlight is characterized in that: the light-emitting assembly 3 includes an LED light source 301 arranged at the bottom of the reflector 5 , a power intelligent driving module 302 and a wire 303 connected to the power intelligent driving module 302 .

The above-mentioned LED floodlight is characterized in that: a plurality of rows of heat conduction columns 6 for absorbing light heat are arranged at the bottom of the rear lamp housing 2, and the heat conduction columns 6 are divided into two groups, respectively arranged on The air suction fan 703 and the exhaust fan 704 on both sides of the LED light source 301 are directly opposite to each other.

The above-mentioned LED floodlight is characterized in that: the outer nozzles of the air inlet pipe 701 and the air exhaust pipe 702 are provided with a waterproof cover 11 .

The above-mentioned LED floodlight is characterized in that: the reflector 5 is in the shape of a trapezoid and is detachably installed at the opening of the rear lamp housing 2, and the opening of the rear lamp housing 2 is also provided with a waterproof cover. Sealing ring 9, the outer wall of the rear lamp housing 2 is provided with a fixing clip 10 for clamping the rear lamp housing 2 and the front lamp cover 1, and the fixing clip 10 is provided with an opening for pressing the rear lamp housing 2 screw 14 at the

The above-mentioned LED floodlight is characterized in that: the back of the rear lamp housing 2 is provided with an aluminum heat dissipation assembly 12, and the heat dissipation assembly includes an aluminum substrate fixed on the back of the rear lamp housing 2 with screws 1201 and multiple rows of aluminum cooling fins 1202 arranged in parallel on the aluminum substrate 1201 , and a plurality of cooling holes 1203 for air circulation are provided at the bottom of the aluminum cooling fins 1202 .

The above-mentioned LED floodlight is characterized in that: the fixed plate 1301 and the adjustable bracket 1304 are both made of aluminum parts by stretching.

The above-mentioned LED floodlight is characterized in that: the two sides of the rear lamp housing 2 are provided with adjustable mounting frame components 13, and the adjustable mounting frame components 13 include screws fixed on both sides of the rear lamp housing 2. A fixed plate 1301, a central threaded hole 1302 is provided in the middle of the fixed plate 1301, and a plurality of side threaded holes 1303 are arranged on the periphery of the fixed plate 1301 along an arc, and the fixed plates 1301 on both sides pass through the central threaded hole 1302 and one of the side holes. The threaded hole 1303 is screwed with an adjustable bracket 1304 .

Compared with prior art, the present invention has following advantage:

1. The present invention is equipped with an air-cooling device, so that the floodlight not only relies on aluminum heat sinks to dissipate heat, but also sets a suction fan and an exhaust fan on both sides of the floodlight, and the suction fan cools the outside cold air Inhaled into the interior of the lamp, the cold air will cool the heat conduction column used to absorb the heat of the lamp source, and the exhaust fan will discharge the cooled hot air out of the floodlight, and a modified electromagnetic Valve, the solenoid valve is intelligently driven by the power supply intelligent drive module. When it is raining or not working, the solenoid valve will be powered off, and the spring top pressure core will block the annular flange to prevent external rainwater from entering the floodlight. The rainwater temperature control probe installed on the outer wall judges whether it is raining by detecting the temperature and humidity of the outside world. On sunny days, the solenoid valve is energized, and when the coil is energized, it pushes the valve stem to press the core, the spring is compressed, and the solenoid valve is in the open state. The cavity of the lamp is communicated with the outside through the air inlet pipe and the air exhaust pipe, and the heat dissipation fan works at the same time. A waterproof cover is also provided outside the air inlet pipe and the air exhaust pipe. The air cooling device of the present invention has high heat dissipation efficiency and good waterproof performance .

2. The present invention is provided with a sealing ring between the front light cover and the rear light housing, and the front light cover and the rear light housing clamp the sealing ring with the fixing clip and the screw on it, which further enhances its waterproof performance.

3. In the present invention, an aluminum heat dissipation assembly is provided on the back of the rear lamp housing, and a plurality of heat dissipation holes for air circulation are provided at the bottom of the aluminum heat sink, which has a good ventilation effect and is conducive to timely and effective heat dissipation.

4. The front lamp cover and the rear lamp housing of the present invention are butt-jointed and detachably connected, and the heat sink substrate and the back of the rear lamp housing are fixed by screws, which are convenient for disassembly and installation, assembly and maintenance.

5. The adjustable mounting bracket assembly of the present invention is connected to the adjustable bracket through the central threaded hole and side threaded holes on the fixing plate, so that the bracket can be precisely adjusted to the installation angle, and is suitable for installation in various environments.

【Description of drawings】

Fig. 1 is a perspective view of the present invention;

Fig. 2 is an exploded view of the present invention;

Fig. 3 is a sectional view of the present invention;

Fig. 4 is a sectional view of the air cooling device of the present invention.

In the figure: 1 is the front lamp cover; 2 is the rear lamp housing; 3 is the light-emitting component; 301 is the LED light source; 302 is the power intelligent drive module; 303 is the wire; 4 is the lamp cavity; 5 is the reflector; 6 is the 7 is the air cooling device; 701 is the air inlet pipe; 702 is the exhaust pipe; 703 is the suction fan; 704 is the exhaust fan; 705 is the solenoid valve; 7051 is the electromagnetic coil; Valve core; 70531 is the core cap; 70532 is the core rod; 70533 is the rib; 7054 is the spring; 706 is the ring groove; 707 is the annular flange; 708 is the large cylinder; Control probe; 9 is sealing ring; 10 is fixing clip; 11 is waterproof cover; 12 is cooling assembly; 1201 is aluminum substrate; 1202 is aluminum heat sink; 1203 is cooling hole; 13 is adjustable mounting frame assembly; 1301 1302 is a central threaded hole; 1303 is a side threaded hole; 1304 is an adjustable support; 14 is a screw.

【detailed description】

The present invention will be further described below in conjunction with accompanying drawing:

An LED floodlight, comprising a rear lamp housing 2 with an open front end, the front end of the rear lamp housing 2 is docked with a front lamp cover 1 forming a lamp cavity 4, and a light-emitting component is arranged in the lamp cavity 4 3 and a reflector 5 for reflecting light, a rainwater temperature control probe 8 for detecting whether it is raining outside is provided on the outer wall of the rear lamp housing 2, and a wind lamp is provided in the lamp cavity 4 outside the reflector 5. Cooling device 7, the air cooling device 7 includes an air inlet pipe 701 and an air exhaust pipe 702 that are arranged oppositely on the two inner sides of the rear lamp housing 2 and communicate with the outside world. The bottom of the rear lamp housing 2 is respectively provided with The air inlet pipe 701 is connected to the suction fan 703 for blowing outside air into the cavity 4 of the lamp and the exhaust fan 703 connected to the exhaust pipe 702 is used to discharge the hot air from the cavity 4 of the lamp The fan 704 is provided with a solenoid valve 705 for controlling the opening and closing of the air inlet pipe 701 and the air exhaust pipe 702 . Through the above-mentioned good heat dissipation performance, the floodlight can be made into a high-power floodlight above 200W.

The solenoid valve 705 includes an electromagnetic coil 7051, a valve stem 7052, a valve core 7053 and a spring 7054. The valve core 7053 includes a core rod 70531 and a core rod 70532 connected to the core rod 70531. The air inlet pipe 701 and The inner wall of the exhaust pipe 702 is provided with an annular flange 707 and two concentric large cylindrical bodies 708 and small cylindrical bodies 709 fixed on the inner wall of the pipe and communicating with the outside world. shaped flange 707, the core rod 70532 is inserted into the small cylindrical body 709 and fits with its inner wall, and an annular groove 706 is formed between the large cylindrical body 708 and the small cylindrical body 709. The slot 706 is provided with a plurality of rods for fixing the small cylindrical body 709 on the inner wall of the large cylindrical body 708. The spring 7054 is arranged on the outer periphery of the core rod 70532 and one end of the core rod 70531. The other end of the end surface is pressed against the rod, the electromagnetic coil 7051 and the valve rod 7052 connected to it are arranged at the inner end of the tube, and the other end of the valve rod 7052 is pressed against the other end face of the core cap 70531 , both the suction fan 703 and the exhaust fan 704 are in communication with the pipe wall, and the communication point is located between the annular flange 707 and the electromagnetic coil 7051 .

The rods are three and fixed at 120 degrees to each other between the inner wall of the large cylindrical body 708 and the outer wall of the small cylindrical body 709, and the core rod 70532 is provided with a plurality of ribs that cooperate with the small cylindrical body 709 70533.

The light-emitting assembly 3 includes an LED light source 301 arranged at the bottom of the reflector 5 , a power intelligent driving module 302 and a wire 303 connected to the power intelligent driving module 302 . The power supply intelligent drive module 302 rectifies 220V AC into a constant current source to supply power to the LED light source 301, and realizes automatic control internally through a program.

The bottom of the rear light housing 2 is also provided with a plurality of rows of heat conduction columns 6 for absorbing the heat of the light. It is directly opposite to the exhaust fan 704.

The rear lamp housing 2 is made of aluminum material, the front lamp cover 1 is made of glass material, and the reflector 5 is an aluminum reflector.

A waterproof cover 11 is provided at the outer nozzles of the air inlet pipe 701 and the air exhaust pipe 702 . The reflector 5 is trapezoidal and is detachably installed at the opening of the rear lamp housing 2. A sealing ring 9 for waterproofing is provided in the aluminum groove on the front flange of the rear lamp housing 2. The sealing ring 9 is a silicone material, and the outer wall of the rear lamp housing 2 is provided with a fixing clip 10 for clamping the rear lamp housing 2 and the front lamp cover 1. Screw 14 at the opening. Through the above waterproof measures, the interior of the floodlight can be completely sealed and waterproof, and the waterproof level is IP65.

The back of the rear lamp housing 2 is provided with an aluminum heat dissipation assembly 12, and the heat dissipation assembly 12 includes an aluminum substrate 1201 fixed on the back of the rear lamp housing 2 with screws and a plurality of rows arranged in parallel on the aluminum substrate. The aluminum heat sink 1202 on 1201 is provided with a plurality of heat dissipation holes 1203 for air circulation at the bottom of the aluminum heat sink 1202 .

Both the fixed plate 1301 and the adjustable bracket 1304 are made of aluminum parts by stretching, which has good heat dissipation effect, no rust, long service life and simple stretching process.

Both sides of the rear lamp housing 2 are provided with adjustable mounting frame components 13, and the adjustable mounting frame components 13 include fixing plates 1301 fixed on both sides of the rear lamp housing 2 with screws. Threaded holes 1302, the periphery of the fixed plate 1301 is provided with a plurality of side threaded holes 1303 along the arc, and the fixed plate 1301 on both sides is screwed with an adjustable bracket 1304 through the central threaded hole 1302 and one of the side threaded holes 1303, so that the bracket The installation angle can be adjusted precisely, which is suitable for installation in various environments.

Claims (9)

1. A kind of LED projection lamp, comprises the rear lamp housing (2) that front end opening is arranged, and the front end of described rear lamp housing (2) is docked and is provided with the front lamp cover (1) that forms lamp mold cavity (4), so The lamp cavity (4) is provided with a light-emitting component (3) and a reflector (5) for reflecting light, and it is characterized in that: on the outer wall of the rear lamp housing (2) there is a device for detecting whether it is raining outside. The rainwater temperature control probe (8) is provided with an air-cooling device (7) in the lamp cavity (4) outside the reflector (5), and the air-cooling device (7) is included in the rear lamp housing ( 2) The air inlet pipe (701) and the air exhaust pipe (702) which are arranged opposite to each other and communicate with the outside world, and the bottom of the rear lamp housing (2) are respectively provided with The suction fan (703) used to blow the external air into the cavity (4) of the lamp and the exhaust gas connected to the exhaust pipe (702) to discharge the hot air from the cavity (4) of the lamp The fan (704) is provided with a solenoid valve (705) that controls the opening and closing of the air inlet pipe (701) and the air exhaust pipe (702); The solenoid valve (705) includes an electromagnetic coil (7051), a valve stem (7052), a spool (7053) and a spring (7054), and the spool (7053) includes a spool (70531) and the spool (70531) and the spool ( 70531) connected core rod (70532), the inner walls of the air inlet pipe (701) and the air exhaust pipe (702) are provided with annular flanges (707) and two concentric Large cylindrical body (708), small cylindrical body (709), the core cap (70531) is attached to the annular flange (707) on the inner wall of the tube, and the core rod (70532) is inserted into the small tube Shape body (709) and cooperate with its inner wall, an annular groove (706) is formed between the large cylinder body (708) and small cylinder body (709), and a plurality of The small cylindrical body (709) is fixed to the rod on the inner wall of the large cylindrical body (708), the spring (7054) is arranged on the periphery of the core rod (70532) and one end is supported on the core cap (70531 ) on one end surface and the other end against the rod, the electromagnetic coil (7051) and the valve rod (7052) connected to it are arranged at the inner end of the tube, and the other end of the valve rod (7052) is pressed against the On the other end face of the core cap (70531), both the suction fan (703) and the exhaust fan (704) are connected to the pipe wall, and the connection is located between the annular flange (707) and the electromagnetic coil ( 7051). 2. The LED floodlight according to claim 1, characterized in that: the rods are three and fixed at 120 degrees to each other between the inner wall of the large cylindrical body (708) and the outer wall of the small cylindrical body (709) , the core rod (70532) is provided with a plurality of ribs (70533) that cooperate with the small cylindrical body (709). 3. The LED floodlight according to claim 2, characterized in that: the light-emitting assembly (3) includes an LED light source (301) and a power supply intelligent driving module (302) arranged at the bottom of the reflector (5) and A wire (303) connected to the power supply intelligent drive module (302). 4. The LED floodlight according to claim 3, characterized in that: a plurality of rows of heat conduction columns (6) for absorbing light heat are arranged at the bottom of the rear lamp housing (2), and the heat conduction columns (6) Divide into two groups, respectively set at the opposite sides of the suction fan (703) and the exhaust fan (704) on both sides of the LED light source (301). 5. The LED floodlight according to claim 4, characterized in that: a waterproof cover (11) is provided at the outer nozzles of the air inlet pipe (701) and the air exhaust pipe (702). 6. The LED floodlight according to any one of claims 1 to 5, characterized in that: the reflector (5) is in the shape of a trapezoid and is detachably installed at the opening of the rear lamp housing (2), The opening of the rear lamp housing (2) is also provided with a sealing ring (9) for waterproofing, and the outer wall of the rear lamp housing (2) is provided with a clamping structure for clamping the rear lamp housing (2) and the front lamp cover ( 1) the fixing clip (10), the fixing clip (10) is provided with a screw (14) pressing against the opening of the rear light housing (2). 7. The LED floodlight according to claim 6, characterized in that: the back of the rear lamp housing (2) is provided with an aluminum heat dissipation assembly (12), and the heat dissipation assembly (12) includes screws fixed The aluminum base plate (1201) on the back of the rear light housing (2) and the aluminum heat sinks (1202) arranged in parallel on the aluminum base plate (1201) in multiple rows, on the aluminum heat sink (1202 ) is provided with a plurality of cooling holes (1203) for air circulation. 8. The LED floodlight according to claim 7, characterized in that: the fixing plate (1301) and the adjustable bracket (1304) are both made of aluminum parts by stretching. 9. The LED floodlight according to claim 8, characterized in that: adjustable mounting frame components (13) are provided on both sides of the rear lamp housing (2), and the adjustable mounting frame components (13) include Fix the fixing plate (1301) on both sides of the rear lamp housing (2) with screws, the middle of the fixing plate (1301) is provided with a central threaded hole (1302), and the periphery of the fixing plate (1301) is provided with multiple holes along the arc. There are three side threaded holes (1303), and the fixed plates (1301) on both sides are screwed with adjustable brackets (1304) through the central threaded hole (1302) and one of the side threaded holes (1303).