CN103851601A - Lamp and its liquid cooling device - Google Patents

Abstract

The invention provides a liquid-cooled heat radiating device of a lamp, which comprises a lamp shell with an opening, a light source, a water-cooling block, a heat exchanger, a water tank, a water pump and a water pipe, wherein a partition plate is arranged to divide the interior of the lamp shell into a first closed cavity and a second closed cavity with an opening, the light source is arranged in the second closed cavity and is arranged on the partition plate, the water-cooling block is arranged in the first closed cavity and is arranged on the partition plate, the heat exchanger and the water tank are respectively arranged on the inner wall of the first closed cavity, the water pump is arranged on the water tank, and the water pipe penetrates through the water-cooling block and the heat exchanger. The heat exchanger is provided with radiating fins, a fan is installed on the radiating fins, the partition plate and the lamp shell are integrally formed, the first cavity is provided with a rear cover, and the heat exchanger is installed on the rear cover. The heat dissipation device has high heat dissipation efficiency and is easy to disassemble and assemble. The invention also provides a lamp which comprises the reflecting cup, the light-transmitting plate and the heat dissipation device, has strong heat dissipation capability, can select a high-power light source, and does not need to worry about burning out the light source or a circuit board and electronic elements in the lamp due to excessive heat.

Description

Lamp and its liquid cooling device

technical field

The invention relates to the technical field of heat dissipation of lamps, in particular to a liquid cooling heat dissipation device for a lamp and a lamp using the heat dissipation device.

Background technique

Many occasions require the use of lamps equipped with high-power light sources. High-power light sources generate a lot of heat, and circuit boards and electronic components are usually installed in such lamps. The board or electronic components are burned out, so the heat dissipation capability inside the lamp is particularly important. In the prior art, most lamps only rely on the lamp housing to transfer heat to the lower temperature part. This way of heat dissipation is slow, and the heat cannot be transferred out in time, which may easily cause the light source, circuit board or electronic components to burn out, and this This method will cause uneven heat distribution of the lamp housing, and long-term local thermal expansion and contraction may easily lead to cracking of the lamp housing. Although some lamps are equipped with cooling devices, these cooling devices have complex structures and many parts, which are not easy to install and disassemble.

Contents of the invention

The object of the present invention is to overcome the defects of the prior art, and provide a liquid-cooled heat dissipation device for lamps with simple structure, high heat dissipation efficiency and easy disassembly.

The present invention is achieved in this way. A lamp liquid cooling device includes a lamp housing with an opening and a light source, and a partition is provided to divide the inside of the lamp housing into a closed first chamber and a second chamber with an opening. chamber, the light source is placed in the second chamber and installed on the partition; the liquid cooling device for the lamp also includes a water cooling block, a heat exchanger, a water tank, a water pump and a water pipe, and the water cooling block is placed The first chamber is installed on the partition plate, the heat exchanger and the water tank are respectively installed on the inner wall of the first chamber, the water pump is installed on the water tank, and the water pipe It passes through the water cooling block and the heat exchanger, and its two ends are connected to the water tank.

Further, a fan is provided on the heat exchanger.

Further, the baffle is integrally formed with the lamp housing, the first chamber forms a closed cavity by setting a back cover, and the heat exchanger is installed on the back cover.

Further, the partition plate is installed in the lamp housing through fasteners.

Furthermore, the first chamber forms a closed cavity by setting a rear cover, and the heat exchanger is installed on the rear cover.

Specifically, the heat exchanger is provided with cooling fins.

Preferably, vent holes are provided on the separator.

The lamp liquid cooling device provided by the present invention has the following technical effects:

1) The present invention uses partitions to divide the interior of the lamp housing into a closed first chamber and a second chamber with an opening. The light source is placed in the second chamber and installed on the partition. The water cooling block and heat exchanger and The water tanks are respectively installed in the first chamber, the cooling liquid is installed through the water tanks and the water pipes, and the water pump provides flowing power for the cooling liquid. In this way, the heat from the light source is transferred to the separator, the separator transfers the heat to the water cooling block, the water cooling block transfers the heat to the cooling liquid in the water pipe, the cooling liquid flows along the water pipe to the heat exchanger, and transfers the heat to the heat exchanger. The heat exchanger and the heat exchanger transfer heat to the inner wall of the first chamber, and the coolant flows back to the water tank and then flows out from the water tank to the water cooling block, and so on. Due to the large specific heat capacity and fast flow speed of the cooling liquid, the heat emitted by the light source can be quickly transferred to the part where the heat is not concentrated. The device has few parts and is easy to assemble and disassemble.

2) The fan installed on the heat exchanger can accelerate the heat dissipation on the heat exchanger and transfer part of the heat to the air. The heat dissipation fins on the heat exchanger can further improve its heat dissipation performance; The first and second chambers can vent the expanding gas into the second chamber to relieve the rapidly increasing gas pressure in the first chamber.

3) Different methods are used for the cooperation between the partition and the lamp housing. When it is integrally formed with the lamp housing, the first chamber is sealed by adding a back cover, so that the components of the heat sink can be installed and disassembled by opening the back cover; the partition and the lamp housing When it is not integrally formed, the parts of the cooling device can be replaced by opening the partition; or a back cover is added to the first chamber, and the parts of the cooling device can be replaced by opening the partition or the back cover, which can be suitable for different Luminaires needed.

The present invention also provides a lamp, including a reflective cup, a light-transmitting plate, and the above-mentioned lamp liquid cooling device, the reflective cup is installed in the second chamber, the light source is located in the reflective cup, and the transparent The light board covers the open end of the second chamber.

Further, it also includes a front cover hollowed out in the middle, the front cover is installed on the opening end of the second chamber, the edge of the reflective cup and the edge of the light-transmitting plate are sandwiched between the lamp housing and the front between covers.

Furthermore, a sealing ring is interposed between the light-transmitting plate and the lamp housing, and the sealing ring has a U-shaped groove, and the edge of the reflector cup is embedded in the U-shaped groove of the sealing ring.

The lamp provided by the invention has the following technical effects:

1) The lamp adopts the lamp liquid cooling device provided by the present invention, which has a strong heat dissipation capability, and the heat dissipation effect is superior to that of the lamp shell alone. A high-power light source can be selected, and there is no need to worry about burning out the light source or lamp due to excessive heat generation Circuit boards and electronic components inside.

2) The lamp adopts a hollow front cover in the middle, and the front cover is installed on the opening end of the second chamber. The front cover is used to fix the reflector and the light-transmitting plate, which is easy to install and disassemble. The sealing ring interposed between the light-transmitting plate and the lamp housing can play the role of dustproof, waterproof and shockproof, and prevent the light-transmitting plate from breaking when the lamp is subjected to strong vibration.

Description of drawings

FIG. 1 is a schematic diagram of a lamp using a liquid-cooled heat dissipation device in an embodiment of the present invention.

Fig. 2 is a partially enlarged view of I in Fig. 1 .

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to Fig. 1, the embodiment of the present invention provides a liquid cooling device for lamps, including a lamp housing 1 with an opening and a light source 2, and a partition 11 is provided to divide the interior of the lamp housing 1 into a closed first chamber 12 and a second chamber 13 with an opening, the light source 2 is placed in the second chamber 13 and installed on the partition 11; the lamp liquid cooling device also includes a water cooling block 3, a heat exchange 4, water tank 5, water pump 51 and water pipe 52, the water cooling block 3 is placed in the first chamber 12 and installed on the partition 11, the heat exchanger 4 and the water tank 5 are respectively installed On the inner wall of the first chamber 12, the water pump 51 is installed on the water tank 5, the water pipe 52 passes through the water cooling block 3 and the heat exchanger 4, and its two ends are connected to the water tank 5 on. The water tank 5 and the water pipe 52 are equipped with coolant. When the cooling device is in operation, the water pump 51 provides power for the coolant to flow. The heat from the light source 2 is transferred to the partition 11, and the partition 11 transfers the heat to the water cooling block 3. , the water block 3 transfers heat to the cooling liquid in the water pipe 52, the cooling liquid flows along the water pipe 52 to the heat exchanger 4, transfers the heat to the heat exchanger 4, and the heat exchanger 4 transfers the heat to the inner wall of the first chamber , the coolant flows back to the water tank 5 and then flows out from the water tank 5 to the water cooling block 3, and so on. Due to the large specific heat capacity and fast flow speed of the cooling liquid, the heat emitted by the light source 2 can be quickly transferred to the parts where the heat is not concentrated. Wherein, part of the heat on the partition 11 is directly transferred to the lamp housing 1, and the partition 11 and the lamp housing 1 can be made of materials with better thermal conductivity.

Specifically, the heat exchanger 4 is provided with a fan 6, which can accelerate the dissipation of the heat on the heat exchanger 4, transfer a part of the heat to the air, and rapidly cool down the heat exchanger.

The structure of the lamp housing 1 and the partition 11 has the following three implementation modes:

Embodiment 1: Referring to FIG. 1 , in this embodiment, the partition 11 and the lamp housing 1 are integrally formed, the first chamber 12 forms a closed cavity by setting a rear cover 14 , and the heat exchange The device 4 is mounted on the rear cover 14. This method is suitable for the situation that the parts of the cooling device can be replaced and installed at the back of the lamp, and the parts of the cooling device can be replaced by opening the rear cover 14 . The partition 11 is formed integrally with the lamp housing 1 , and the heat on the partition 11 is more easily transferred to the lamp housing 1 , which is beneficial to the rapid dissipation of heat.

Embodiment 2: Referring to FIG. 1 , in this embodiment, the partition 11 is installed in the lamp housing 1 through fasteners. In this embodiment, the end of the lamp housing is sealed without a rear cover. The plate 11 replaces the parts of the heat sink, and this lamp is suitable for situations where the parts cannot be replaced at the rear end, for example, a lamp embedded in a wall or placed in water at the end.

Embodiment 3: Referring to FIG. 1 , in this embodiment, the partition 11 is installed in the lamp housing 1 through fasteners, and the first chamber 12 forms a closed cavity by setting a rear cover 14 . The heat exchanger 4 is installed on the rear cover 14 . This embodiment can not only replace parts of the heat sink at the tail end of the lamp housing, but also open the partition 11 to replace parts of the heat sink, which is suitable for lamps with different needs.

In the above three embodiments of the structure of the lamp housing 1 and the partition 11 , the partition 11 can also be provided with an exhaust hole 111 . The air in the first chamber 12 will absorb heat and expand, causing the pressure in the chamber to increase. If the pressure is too high, it may cause the lamp housing to be swollen and cracked. If it is not properly discharged, it will easily cause the temperature of the water pump 51 to be too high and burn out. The vent hole 111 penetrating through the first chamber 12 and the second chamber 13 is provided on the partition 11 to discharge the expanded gas into the second chamber 13 to relieve the rapidly increasing gas pressure in the first chamber 12 .

Further, in the embodiment of the present invention, the heat exchanger 4 is also provided with a plurality of arranged heat dissipation fins 41, which are formed by extending outward on the base of the heat exchanger 4, and the heat dissipation fins 41 can further improve its heat dissipation performance .

Referring to Fig. 1, the embodiment of the present invention also provides a lamp, including a reflector 7, a light-transmitting plate 8 and the above-mentioned lamp liquid cooling device, the reflector 7 is installed in the second chamber 13, the The light source 2 is located in the reflective cup 7 , and the transparent plate 8 covers the opening end of the second chamber 13 . The lamp has a strong heat dissipation capability, and a high-power light source can be selected, so there is no need to worry about burning out the light source or the circuit board and electronic components in the lamp due to excessive heat.

Specifically, the lamp also includes a hollow front cover 15, the front cover 15 is mounted on the opening end of the second chamber 13, the edge 71 of the reflective cup 7 and the edge of the light-transmitting plate 8 are sandwiched between Between the lamp housing 1 and the front cover 15 . The light fixture can use the front cover 15 to fix the reflective cup 7 and the light-transmitting plate 8, which is convenient for installation and disassembly.

Specifically, a sealing ring 9 is interposed between the light-transmitting plate 8 and the lamp housing 1 , and the edge 71 of the reflective cup 7 is embedded in the sealing ring 9 . The sealing ring 9 plays the role of dustproof, waterproof and shockproof, and prevents the light-transmitting plate 8 from breaking when the lamp is subjected to strong vibration.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement or improvement made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. a light fixture liquid-cooling heat radiator, comprise lamp housing and the light source with an opening, it is characterized in that: it is the first chamber of sealing and second chamber with an opening by described lamp housing interior separation that a dividing plate is set, and described light source is placed in described the second chamber and is installed on described dividing plate; This light fixture liquid-cooling heat radiator also comprises water-cooled block, heat exchanger, water tank, water pump and water pipe, described water-cooled block is placed in described the first chamber and is installed on described dividing plate, described heat exchanger and described water tank are installed on respectively on the inwall of described the first chamber, described water pump is installed on described water tank, described water pipe passes through described water-cooled block and described heat exchanger, and its two end is connected on described water tank.

2. light fixture liquid-cooling heat radiator as claimed in claim 1, is characterized in that: described heat exchanger is provided with fan.

3. light fixture liquid-cooling heat radiator as claimed in claim 1, is characterized in that: described dividing plate and described lamp housing are one-body molded, and described the first chamber forms the cavity of sealing by a bonnet is set, and described heat exchanger is installed on described bonnet.

4. light fixture liquid-cooling heat radiator as claimed in claim 1, is characterized in that: described dividing plate is installed in described lamp housing by securing member.

5. light fixture liquid-cooling heat radiator as claimed in claim 4, is characterized in that: described the first chamber forms the cavity of sealing by a bonnet is set, described heat exchanger is installed on described bonnet.

6. light fixture liquid-cooling heat radiator as claimed in claim 1, is characterized in that: described heat exchanger is provided with radiating fin.

7. light fixture liquid-cooling heat radiator as claimed in claim 1, is characterized in that: described dividing plate is provided with steam vent.

8. a light fixture, comprise reflector and light-passing board, it is characterized in that: also comprise the light fixture liquid-cooling heat radiator described in claim 1-7 any one, described reflector is installed in described the second chamber, described light source is positioned at described reflector, and described light-passing board is covered on the openend of described the second chamber.

9. light fixture as claimed in claim 8, is characterized in that: the protecgulum of hollow out in the middle of also comprising, and described protecgulum is installed on the openend of described the second chamber, and the margin of optic cup of described reflector and light-passing board edge clamping are located between described lamp housing and described protecgulum.

10. light fixture as claimed in claim 9, is characterized in that: between described light-passing board and described lamp housing, be folded with sealing ring, sealing circle has U-lag, and the margin of optic cup of described reflector is embedded in the U-lag of described sealing ring.

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