Projection lamp with long service life

Abstract

The utility model relates to the technical field of lighting lamps, in particular to a projection lamp long in service life. The LED lamp comprises an outer shell, a front cover shell is arranged on the front side of the outer shell, a lamp panel used for emitting light is arranged in the outer shell towards the front side, a lens is arranged on the front side of the lamp panel, and protective glass is arranged in the front cover shell. A plurality of heat dissipation fins are integrally arranged behind the outer shell, and the rear side of the lamp panel is attached to the inner wall of the outer shell. A U-shaped mounting frame is arranged below the outer shell, the two ends of the mounting frame are rotationally connected to the two sides of the outer shell respectively, positioning bolts used for angle limiting are arranged on the two sides of the outer shell, an active heat dissipation assembly is arranged on the rear side of the outer shell, and the active heat dissipation assembly comprises an air cooling mechanism, a water cooling mechanism and a controller used for control. According to the projection lamp, multiple heat dissipation modes are set, the controller is used for controlling, the heat dissipation fan and the water pump are selectively started according to the temperature of the lamp panel, the energy-saving and heat dissipation capacity is achieved, the part aging phenomenon caused by high temperature is reduced as much as possible, and the service life of the projection lamp is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting lamp technical field, concretely relates to a long service life's projection lamp. BACKGROUND

[0002] With the development of science and technology, LED occupies a large proportion in modern lighting, and with the development of technology, LED is also developing towards small size and high power, for example, the projection lamp can achieve small size and large area lighting, but although the size is reduced and the power is increased, the highest electric light conversion efficiency of LED is near 90%, and most of the LEDs cannot reach the conversion rate, so with the increase of power, the heat dissipation capacity is also improved, and with the reduction of size, the heat energy is more concentrated, the existing projection lamp sets up the fin behind the lamp to carry out passive heat dissipation, but in some special cases, for example, multiple projection lamps are in the same area, or the temperature of the area is high, and small air flow will cause the temperature rise in the area, so it is difficult to control the temperature of the projection lamp, high temperature leads to rapid aging of the components of the projection lamp, and finally the service life is greatly shortened. SUMMARY

[0003] The utility model discloses to the defects and insufficient of prior art, provide a kind of long service life's projection lamp of reasonable design, it can solve the above-mentioned defects.

[0004] To achieve the above object, the utility model adopts the following technical scheme: it contains shell body, the front cover is equipped in the front side of shell body, the lamp panel for emitting light is equipped in the inside of shell body towards front side, the lens is equipped in the front side of lamp panel, the protective glass is equipped in the front cover;Shell body rear is integrally equipped with several heat dissipation fins, and the inner wall of shell body is pasted to the rear side of lamp panel;The mounting bracket of '' U '' shape is equipped below shell body, and the both ends of mounting bracket are rotatably connected to the both sides of shell body, and the both sides of shell body are equipped with the positioning bolt for angle limit, and the active heat dissipation component is equipped on the rear side of shell body, and the active heat dissipation component contains air cooling mechanism, water cooling mechanism and the controller for control.

[0005] Preferably, the air cooling mechanism contains the wind deflector connected to the rear of the shell body, the front end of the wind deflector is connected to the heat dissipation fin, the rear end is opened with the air port, and the heat dissipation fan is installed at the air port.

[0006] Preferably, the water cooling mechanism contains two water tanks respectively equipped in the bottom of the both sides of mounting bracket, the heat exchange pipe is arranged in the heat dissipation fin, the connecting seat is arranged on the wind deflector, the two quick connectors are arranged on the connecting seat, and the both ends of the heat exchange pipe are respectively connected to the quick connectors;The water pump is arranged on one of the water tanks, the water suction port of the water pump is connected to the water tank, the both ends of the heat exchange pipe are connected with the water suction pipe and the return water pipe through the quick connector, the water suction pipe is connected to the water outlet of the water pump, the return water pipe is connected to the water tank away from the water pump, and the bottom of the two water tanks is connected through the balance pipe.

[0007] Preferably, the controller is arranged below the air deflector, and the controller controls the water pump and the cooling fan respectively.

[0008] Preferably, the controller comprises a control core, a temperature sensor is arranged at the lamp panel in the outer shell, the temperature sensor is signal-connected to the control core, two control ports of the control core are connected with a relay one and a relay two respectively, the water pump and the cooling fan are both direct current powered, input negative poles of the two are directly connected with a circuit negative pole, an input positive pole of the cooling fan is connected with a normally open port of the relay one, an input positive pole of the water pump is connected with a normally open port of the relay two, and common ports of the relay one and the relay two are both connected with a positive power supply.

[0009] Preferably, the water tank is provided with a water inlet.

[0010] After the above structure is adopted, the beneficial effects of the present application are as follows:

[0011] The present application is provided with multiple heat dissipation modes, the heat dissipation fins can increase the air contact area for passive heat dissipation, the cooling fan can increase the air flow in the heat dissipation fins to improve the heat dissipation capacity, the water pump can directly use water to absorb heat energy from the heat dissipation fins through the heat exchange pipe to realize rapid cooling, and the multiple modes ensure the heat dissipation performance.

[0012] The present application is controlled by the controller, the cooling fan and the water pump are selectively started according to the temperature of the lamp panel, the cooling fan and the water pump are closed to save energy when the temperature is low, and the cooling fan and the water pump are started at the same time to perform forced cooling when the temperature is high, so that the temperature of the light projector is stable, the multiple gears work automatically, the energy saving and heat dissipation are combined, the component aging phenomenon caused by high temperature is reduced as much as possible, and the service life of the light projector is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a front side structure schematic view of the present application;

[0014] Figure 2 is a rear side structure schematic view of the present application;

[0015] Figure 3 is a sectional view of the present application;

[0016] Figure 4 is a structure schematic view of the heat exchange pipe in the present application;

[0017] Figure 5 is a principle diagram of the controller in the present application.

[0018] EXPLANATION OF REFERENCE NUMERALS:

[0019] 1, the shell body; 2, mounting bracket; 3, positioning bolt; 4, front cover; 5, protective glass; 6, lens; 7, lamp panel; 8, heat dissipation fin; 9, wind deflector; 10, heat dissipation fan; 11, controller; 12, connecting seat; 13, heat exchange pipe; 14, quick connector; 15, water tank; 16, water inlet; 17, return pipe; 18, water suction pipe; 19, water pump; 20, control core; 21, temperature sensor; 22, resistance; 23, voltage stabilizing module; 24, relay; 25, relay; 26, balance pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Referring to Figures 1-4 As shown in the figure, it comprises a shell body 1, the front side of the shell body 1 is provided with a front cover 4, the inside of the shell body 1 towards the front side is provided with a lamp panel 7 for emitting light, the front side of the lamp panel 7 is provided with a lens 6, and the front cover 4 is provided with a protective glass 5; the rear of the shell body 1 is integrally provided with a plurality of heat dissipation fins 8, the rear side of the lamp panel 7 is attached to the inner wall of the shell body 1, and the heat conduction capacity is enhanced by using heat-conducting silicone grease or silica gel pad; the lower side of the shell body 1 is provided with a "U"-shaped mounting bracket 2, the two ends of the mounting bracket 2 are respectively rotatably connected to the two sides of the shell body 1, and the two sides of the shell body 1 are provided with positioning bolts 3 for angle limiting, and the rear side of the shell body 1 is provided with a positive heat dissipation assembly, which comprises a forced air cooling mechanism, a water cooling mechanism and a controller 11 for control;

[0022] The forced air cooling mechanism comprises a wind deflector 9 connected to the rear of the shell body 1, the front end of the wind deflector 9 is connected to the heat dissipation fin 8, the rear end is provided with an air inlet, and the heat dissipation fan 10 is installed at the air inlet; the heat dissipation fan 10 directly blows the heat dissipation fin 8, enhances the heat exchange between the gas and the heat dissipation fin 8, and accelerates the heat dissipation.

[0023] As Figures 1-4The water-cooling mechanism includes two water tanks 15 located at the bottom of both sides of the mounting bracket 2. Each water tank 15 is equipped with a water inlet 16. A heat exchange tube 13 passes through the heat dissipation fins 8. A connecting seat 12 is provided on the air guide shroud 9. The connecting seat 12 is equipped with two quick connectors 14. The two ends of the heat exchange tube 13 are respectively connected to the quick connectors 14. A water pump 19 is provided on one of the water tanks 15. The water inlet of the water pump 19 is connected to the water tank 15. The two ends of the heat exchange tube 13 are respectively connected to a suction pipe 18 and a return pipe 17 through the quick connectors 14. The suction pipe 18 is connected to the outlet of the water pump 19, and the return pipe 17 is connected to the water tank 15 away from the water pump 19. The bottoms of the two water tanks 15 are connected by a balance pipe 26.

[0024] by Figure 1 Taking the perspective as an example, the water pump 19 is on the left water tank 15. Therefore, when the water pump 19 is working, it draws water from the left water tank 15 and sends it into the heat exchange tube 13 to exchange heat with the heat dissipation fins 8, absorbing the heat energy emitted by the lamp board 7. Then the water is sent into the right water tank 15. The balance tube 26 keeps the water level in the two water tanks 15 balanced, and the high temperature water automatically floats to the top, while the low temperature water at the bottom is gradually sent into the left water tank 15.

[0025] The quick-connector 14's installation method facilitates pipe replacement. In special circumstances, such as long-term operation in high-temperature environments, external cooling water can be replaced. For example, multiple lights can be connected in series and equipped with a large cooling water tank 15 and cooling equipment for cooling, further enhancing cooling performance and improving the flexibility of floodlight use.

[0026] like Figures 1-5 The controller 11 is located below the air guide shroud 9, and the controller 11 controls the water pump 19 and the cooling fan 10 respectively.

[0027] The controller 11 comprises a control core 20, which needs to support communication and two control ports, and arduino is selected here. A temperature sensor 21 is arranged at the lamp panel 7 in the shell body 1, and a DS18B20 is selected. The temperature sensor 21 is connected to the control core 20, and the signal line is connected to the positive pole through a resistor one 22 for pull-up. Two control ports of the control core 20 are respectively connected with a relay one 24 and a relay two 25, and the control ports are D8 and D9 of the arduino in the figure, marked as fan and pump, both of which are high level enabled. After being powered on, the voltage is generated at both ends of the relay coil to make it attract, which is respectively used for controlling the cooling fan 10 and the water pump 19. The relays are SRD-05VDC-SL-C, and the packaging type and power meet the working requirements of the equipment.

[0028] The power supply circuit is 12v, and the cooling fan 10 and the water pump 19 are both powered by 12v, while the control core 20 is powered by 5v. Therefore, a voltage stabilizing module 23 is arranged to output 5v voltage for the control core 20. The common ends of the two relays are both 12v. After the relays are attracted and turned on, 12v power is supplied to the cooling fan 10 or the water pump 19 to start working.

[0029] In working, the control core 20 monitors the temperature at the lamp panel 7 in real time through the temperature sensor 21. The control core 20 sets two threshold values, which are respectively marked as α and β, and the specific values are determined according to the actual working performance of the LED. For example, α is 55℃, and β is 65℃. When the temperature is below α, it indicates that the temperature of the light projector is low, and active cooling is not needed to maintain the temperature. Therefore, the water pump 19 and the cooling fan 10 are both turned off. When the temperature exceeds α but is below β, active cooling is needed, and the cooling fan 10 is turned on to enhance the air flow to enhance the cooling capacity until the temperature is balanced and is below β. If the temperature continues to rise and is higher than β, the water pump 19 is turned on based on the use of the cooling fan 10 to rapidly absorb heat energy for forced cooling until the temperature is reduced to below β. In different temperature conditions, different methods are used for cooling and reducing temperature to prevent the service life of the light projector from being shortened due to high temperature.

[0030] The mounting mode, connection mode or setting mode of the components not described above are all common mechanical modes, and the specific structure, model and coefficient index of all components are all self-owned technologies. As long as the beneficial effects can be achieved, they can be implemented, and therefore, they will not be described here.

[0031] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A floodlight with a long service life, comprising a housing (1), a front cover (4) on the front side of the housing (1), a light panel (7) for emitting light disposed inside the housing (1) facing forward, a lens (6) disposed on the front side of the light panel (7), and a protective glass (5) disposed inside the front cover (4); characterized in that: The shell body (1) is integrally provided with a plurality of heat dissipation fins (8) at the rear, and the rear side of the lamp plate (7) is attached to the inner wall of the shell body (1); the shell body (1) is provided with a "U"-shaped mounting rack (2) at the bottom, the two ends of the mounting rack (2) are rotatably connected to the two sides of the shell body (1), and the two sides of the shell body (1) are provided with positioning bolts (3) for angle limiting, and the rear side of the shell body (1) is provided with a forced cooling assembly, which comprises a forced air cooling mechanism, a water cooling mechanism and a controller (11) for control.

2. The long-life projection lamp of claim 1, wherein: The forced air cooling mechanism comprises a wind guide cover (9) connected to the rear of the shell body (1), the front end of the wind guide cover (9) is connected to the heat dissipation fin (8), the rear end is provided with an air inlet, and the air inlet is provided with a heat dissipation fan (10).

3. The long-life projection lamp of claim 2, wherein: The water cooling mechanism comprises two water tanks (15) respectively arranged at the bottom of the two sides of the mounting rack (2), a heat exchange pipe (13) is arranged in the heat dissipation fin (8), a connecting seat (12) is arranged on the wind guide cover (9), two quick connectors (14) are arranged on the connecting seat (12), and the two ends of the heat exchange pipe (13) are respectively connected to the quick connectors (14); one of the water tanks (15) is provided with a water pump (19), the water suction port of the water pump (19) is connected to the water tank (15), the two ends of the heat exchange pipe (13) are respectively connected with a water suction pipe (18) and a return water pipe (17) through the quick connectors (14), the water suction pipe (18) is connected to the water outlet of the water pump (19), the return water pipe (17) is connected to the water tank (15) away from the water pump (19), and the bottoms of the two water tanks (15) are connected through a balance pipe (26).

4. The long-life projection lamp of claim 3, wherein: The controller (11) is arranged below the wind guide cover (9), and the controller (11) controls the water pump (19) and the heat dissipation fan (10) respectively.

5. The long-life projection lamp of claim 4, wherein: The controller (11) comprises a control core (20), a temperature sensor (21) is arranged in the shell body (1) at the lamp plate (7), the temperature sensor (21) is signal connected to the control core (20), two control ports of the control core (20) are respectively connected with a relay one (24) and a relay two (25), the water pump (19) and the heat dissipation fan (10) are both direct current power supply, the input negative poles of the two are directly connected to the circuit negative pole, the input positive pole of the heat dissipation fan (10) is connected to the normally open port of the relay one (24), the input positive pole of the water pump (19) is connected to the normally open port of the relay two (25), and the common end of the relay one (24) and the relay two (25) is connected to the positive power supply for power supply.

6. The long-life projection lamp of claim 3, wherein: The water tank (15) is provided with a water inlet (16).

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