CN217131157U - Lamp set - Google Patents

Abstract

The utility model discloses a lamp relates to illuminator technical field. Lamps and lanterns are through setting up interior casing and shell body in the casing in the front, form airflow channel between interior casing and the shell body, and make airflow channel and second holding chamber intercommunication, second holding chamber communicates with second through-hole again, exhaust assembly is located the back casing, exhaust assembly work, outside cold air current will be forced at airflow channel, second holding chamber, second through-hole and outside air circulation, the cold air current will realize the heat exchange through airflow channel, take away the heat of interior casing, thereby realize dispelling the heat by force to the procapsid, ensure that the casing of lamps and lanterns lasts and keep at low temperature state, the air current flows through the light source subassembly and also can dispel the heat to it simultaneously, thereby dispel the heat to whole lamp body, promote user's use experience effect.

Description

Lamp set

Technical Field

The utility model relates to a light-emitting device technical field especially relates to a lamp.

Background

Light fixtures are a general term for various lighting tools, including various light fixtures that can transmit light, distribute and change the light distribution of a light source. In the high-power light source lamp, most of light emitted by the lamp source is emitted to the light-emitting lens positioned in front of the lamp source, and the light is emitted after being refracted and reflected by the light-emitting lens, so that the optical reflection can be effectively enhanced, the light loss is reduced, and the light-emitting efficiency is improved. The high-power light source lamp can make the light-emitting surface as small as possible for realizing small-angle light emitting, but because of the limitation of processing technological conditions, the light-emitting surface of the lamp cannot be made as small as possible, so that a small part of light emitted by the light source cannot be completely collected by the light-emitting lens, and thus part of light irradiates the inner wall of the shell, and the inner wall of the shell absorbs the light and then converts the light into heat, so that the temperature of the shell is increased. For realizing the cooling of casing, the cooling technique means of current commonly used is die-casting shaping play radiating fin on the casing, then relies on the heat on the air natural convection to take away radiating fin, dispels the heat to the casing, but this kind of cooling technique means's heat-sinking capability and efficiency are very limited, lead to being in higher temperature always to seriously influence user experience effect.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art at least one defect, the utility model aims to provide a lamp, it can realize dispelling the heat by force to the casing, is showing and improves the radiating efficiency, ensures that the casing can keep at low temperature state always, promotes user's use and experiences the effect.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:

the lamp comprises a front shell, a first accommodating cavity, a second accommodating cavity and a lamp body, wherein the front end of the front shell is provided with an optical assembly;

the rear shell is connected with the rear end of the front shell and is provided with a second accommodating cavity, the first accommodating cavity is communicated with the second accommodating cavity, and the rear shell is provided with a second through hole for communicating the second accommodating cavity with the outside air;

the light source assembly is arranged in the first accommodating cavity or the second accommodating cavity and is used for generating light emitted towards the inner wall of the front shell; and

the exhaust assembly is arranged in the second accommodating cavity and is connected with the rear shell;

the front shell comprises an inner shell and an outer shell, the outer shell is connected with the rear shell, the outer shell surrounds the outer portion of the inner shell, an air flow channel for air flow circulation is formed between the outer shell and the inner shell, the inner shell is located between the air flow channel and the first containing cavity, the air flow channel is communicated with the second containing cavity, and the exhaust assembly is configured to allow external air flow to flow through the air flow channel, the second containing cavity, the second through hole and external air.

Preferably, the lamp further includes an optical assembly disposed on the front housing for receiving the light of the light source assembly, wherein the lamp further includes a snap ring assembly connected to a front end of the front housing, and the optical assembly is disposed at a center of the snap ring assembly.

Preferably, the snap ring assembly or the outer shell is provided with a first through hole, the inner shell is isolated from the first through hole and the first accommodating cavity, the first through hole is communicated with the airflow channel, and the exhaust assembly is configured to allow external airflow to sequentially pass through the first through hole, the airflow channel, the second accommodating cavity and the second through hole and then exhaust the external air.

Preferably, the number of the first through holes is multiple, and the multiple first through holes are uniformly distributed on the four peripheral surfaces of the snap ring assembly, or the multiple first through holes are uniformly distributed on the front end surface of the snap ring assembly; the plurality of first through holes are surrounded on the periphery of the optical component.

Preferably, the first through holes are uniformly distributed on the peripheral surface, close to the front end of the optical assembly, of the outer shell, and the first through holes form a hollow through hole surface.

Preferably, heat dissipation ribs are arranged between the inner shell and the outer shell, the length extending direction of the heat dissipation ribs is consistent with the airflow circulation direction in the airflow channel, and the heat dissipation ribs (111) are arranged at intervals along the circumferential direction of the inner shell (11).

Preferably, the inner cavity of the inner shell is gradually enlarged along the light emitting direction of the light source assembly, the outer shell and the inner shell are arranged in parallel, the small port of the outer shell is connected with the rear shell, the large port of the outer shell is connected with the snap ring assembly, the small port of the inner shell and the rear shell are arranged at intervals, the large port of the inner shell is connected with the snap ring assembly, and the optical assembly comprises one of a convex lens, a Fresnel lens and a flexible light sheet.

Preferably, the lamp further comprises a heat exchanger, the heat exchanger is arranged in the second accommodating cavity and connected with the rear shell, and the heat exchanger is located between the light source assembly and the exhaust assembly.

Preferably, a plurality of heat dissipation fins are arranged in the heat exchanger at intervals, the air inlet end face of the heat exchanger is close to the heating substrate of the light source assembly, and the air outlet end face of the heat exchanger is opposite to the air inlet of the exhaust assembly, so that air flow is allowed to penetrate through gaps formed by the plurality of heat dissipation fins from the light source assembly to the exhaust assembly.

Preferably, the lamp further comprises a flow guide cover, one end face of the flow guide cover is connected with the air inlet of the exhaust assembly, and the other end of the flow guide cover is connected with the air outlet end face of the heat exchanger in a sealing mode.

Preferably, the inner cavity of the air guide sleeve increases progressively along the direction from the exhaust assembly to the heat exchanger, the large opening end of the air guide sleeve is in sealing connection with the air outlet end face of the heat exchanger, and the small opening end of the air guide sleeve is in sealing connection with the air inlet of the exhaust assembly.

Preferably, the lamp further comprises a rear cover covering the rear end of the rear shell, the second through hole is formed in the middle of the rear cover, and the air outlet of the exhaust assembly is opposite to the second through hole.

To sum up, the utility model discloses following technological effect has:

1. the utility model provides a lamps and lanterns are through setting up interior casing and shell body in the casing in the front, form airflow channel between interior casing and the shell body, and make airflow channel and second holding chamber intercommunication, second holding chamber communicates with the second through-hole again, exhaust assembly is located the back casing and can pass through the second through-hole with the gas in it and discharge, the inner wall to the interior casing is penetrated to partial light that produces when the light source subassembly, and make interior casing generate heat, exhaust assembly work, will allow outside cold air current at airflow channel, second holding chamber, second through-hole and outside air circulation, cold air current will realize the heat exchange through airflow channel, take away the heat of interior casing, thereby realize realizing dispelling the heat to the front casing by force, ensure that the casing of lamps and lanterns lasts to keep at low temperature state, promote user's use experience effect.

2. The utility model provides a lamps and lanterns are through setting up the exhaust subassembly in the back casing, allow outside cold air current to circulate at air current passageway, second holding chamber, second through-hole and outside air, realize the heat transfer, and the light source subassembly also can flow through when the light source subassembly is located second holding intracavity air current to also can dispel the heat the cooling to the light source subassembly.

Drawings

Fig. 1 is a schematic perspective view of the lamp of the present invention.

Fig. 2 is a schematic view of a cross-sectional structure of the lamp of the present invention.

Fig. 3 is an exploded schematic view of the lamp of the present invention.

Fig. 4 is an exploded schematic view of the front case of the present invention.

Fig. 5 is a schematic view illustrating the flow direction of the air flow in the lamp of the present invention.

Wherein the reference numerals have the following meanings:

1-a front shell, 11-an inner shell, 111-radiating ribs, 12-an outer shell, 121-a first through hole, 13-an airflow channel and 14-a first accommodating cavity;

2-rear shell, 21-second containing cavity;

3-a light source assembly;

4-an exhaust assembly;

5-heat exchanger, 51-heat radiation fin;

6-a flow guide cover;

7-an optical component;

8-a snap ring assembly;

9-an inner lens;

10-rear cover, 101-second through hole.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The utility model discloses a lamp, as shown in fig. 1 and fig. 2, lamp includes procapsid 1 and back casing 2, and procapsid 1 is equipped with first holding chamber 14, and optical assembly 7 is installed to the front end of procapsid 1 to the preceding terminal surface of procapsid 1 is sealed firmly. The optical assembly 7 includes one of a convex lens, a fresnel lens, and a light diffuser. The front end of back casing 2 is connected with the rear end of procapsid 1, and back casing 2 is equipped with second holding chamber 21, first holding chamber 14 and second holding chamber 21 intercommunication, and the rear end of back casing 2 covers after has lid 10 to seal second holding chamber 21, and second through-hole 101 has been seted up at the middle part of back lid 10, and second through-hole 101 communicates the passageway between second holding chamber 21 and the external atmosphere. Of course, the second through hole 101 may be a through hole directly opened on the rear case 2.

Light source component 3 is located in first holding chamber 14 or second holding chamber 21 or locates the junction of first holding chamber 14 and second holding chamber 21, light source component 3 is used for producing the light of the inner wall of procapsid 1 and the light of directive to optical assembly 7, the light in figure 2 is the light path that shines to procapsid 1 inner wall, wherein the major part light directive is to optical assembly 7, optical assembly 7 is equipped with jagged plane of reflection, the refraction of the plane of reflection of light optical assembly 7 is reflected the back and is jeted, the minor part light is to the inner wall of procapsid 1, the temperature can rise after procapsid 1 absorbs the heat, thereby need dispel the heat to procapsid 1.

As shown in fig. 2, 3 and 5, the front case 1 includes an inner case 11 and an outer case 12, and a rear end surface of the outer case 12 is connected to a front end surface of the rear case 2, preferably, the rear end surface of the outer case 12 and the front end surface of the rear case 2 may be seamlessly spliced, and of course, the outer case 12 and the rear case 2 may be formed as an integral structure. The outer shell 12 is disposed around the outer surface of the inner shell 11, and there is a gap between the outer shell 12 and the inner shell 11, so as to form an airflow channel 13 for flowing air, and the inner shell 11 is located between the airflow channel 13 and the first accommodating cavity 14, that is, the inner shell 11 separates the airflow channel 13 and the first accommodating cavity 14. The air flow channel 13 is communicated with the second accommodating cavity 21, and the second accommodating cavity 21 is communicated with the outside atmosphere through the second through hole 101. The exhaust assembly 4 is located in the rear housing 2 and can exhaust the gas in the second accommodating chamber 21 through the second through hole 101. Exhaust assembly 4 works, because optical assembly 7 has sealed the preceding terminal surface of procapsid 1, make and to produce the negative pressure in airflow channel 13 and second holding chamber 21, this will force outside cold air current to pass through airflow channel 13 in proper order, discharge to outside atmosphere again behind second holding chamber 21 and the second through-hole 101 (the arrow in figure 5 is the circulation direction of air current), cold air current will realize the heat exchange through airflow channel 13, take away the heat of interior casing 11, thereby realize dispelling the heat by force to procapsid 1, ensure that the casing of lamps and lanterns keeps continuously at low temperature state, promote user's use experience effect. Of course, the air discharge assembly 4 is configured to allow the external air flow to circulate through the air flow channel 13, the second accommodating chamber 21, the second through hole 101 and the external air, and can circulate in the forward direction or the reverse direction.

The utility model provides a lamps and lanterns are through setting up exhaust subassembly 4 in back casing 2, and can discharge the gas in second holding chamber 21 through second through-hole 101, make outside cold air current pass through airflow channel 13 in proper order, discharge again behind second holding chamber 21 and the second through-hole 101 outside atmosphere and realize the circulation of making a round trip along with carrying out the heat transfer, the air current also can flow through light source subassembly 3 when light source subassembly 3 is located second holding chamber 21, thereby also can cool down light source subassembly 3 by heat dissipation, further promote the heat-sinking capability of lamps and lanterns, the life of extension lamps and lanterns.

As shown in fig. 1 to 5, the outer housing 12 is provided with a first through hole 121, the inner housing 11 separates the first through hole 121 from the first accommodating cavity 14, and the first through hole 121 is communicated with the airflow channel 13. When the exhaust assembly 4 works, negative pressure is formed in the airflow channel 13 and the second accommodating cavity 21, which forces external airflow to be sucked into the first through hole 121, and then the airflow passes through the airflow channel 13, the second accommodating cavity 21 and the second through hole 101 in sequence and is exhausted to the outside atmosphere.

Further, for increasing airflow channel 13's air input, first through-hole 121 is equipped with a plurality ofly, and a plurality of first through-holes 121 are evenly arranged in the peripheral ventilation hole ring that forms of the four of procapsid 1's front end, ensure that the air current can flow through whole procapsid 1 from procapsid 1 front end, realize the comprehensive heat dissipation of casing, and the air current can improve the intake in addition from the peripheral even air inlet of the four of procapsid 1, promotes heat exchange efficiency. A plurality of vent rings are arranged in parallel to form a hollow annular vent surface, so that the air inlet area is further increased, the air inlet volume is increased, and the heat exchange efficiency is improved.

As shown in fig. 1 to 3, the lamp further includes a clip assembly 8 for fixing the optical assembly 7 to the front end of the front housing 1, and the clip assembly 8 is fixedly connected to the front end of the front housing 1. The clip ring assembly 8 may also be provided with a first through hole 121, and the first through hole 121 may also be communicated with the airflow channel 13. When the exhaust assembly 4 works, the external air flow is also forced to pass through the first through hole 121, the air flow channel 13, the second accommodating cavity 21 and the second through hole 101 in sequence and then exhausted to the external atmosphere. Similarly, the number of the first through holes 121 on the clip ring assembly 8 may be multiple, and the multiple first through holes 121 are uniformly arranged on the four peripheral surfaces of the clip ring assembly 8, in this case, the first through holes 121 may be L-shaped through holes, or the multiple first through holes 121 are uniformly arranged on the front end surface of the clip ring assembly 8, in this case, the first through holes 121 may be through holes. The first through holes 121 of the plurality of snap ring assemblies 8 are all around the outer periphery of the optical assembly 7. Of course, the gap between the clip member 8 and the front end surface of the front case 1 may be defined as the first through hole 121; in the case of avoiding light leakage, the gap between the snap ring assembly 8 and the optical assembly 7 may be used as the first through hole 121 as long as the air inlet end of the air flow channel 13 is communicated with the external atmosphere.

As shown in fig. 4, in order to enlarge the heat exchange area and improve the heat dissipation efficiency, a plurality of heat dissipation ribs 111 are disposed between the inner housing 11 and the outer housing 12, and the length extension direction of the heat dissipation ribs 111 is the same as the air flow direction in the air flow channel 13. That is, the extending direction of the gap between two adjacent heat dissipation ribs 111 is consistent with the airflow flowing direction in the airflow channel 13, so that smooth airflow flowing is ensured, and the heat dissipation efficiency is improved. The radiating ribs (111) are arranged at intervals along the circumferential direction of the inner shell (11) and are distributed on the outer surface of the whole inner shell (11).

In order to further improve the heat dissipation performance, the bottom surface of the heat dissipation ribs 111 is tightly attached to the outer surface of the inner casing 11, and the top surface of the heat dissipation ribs 111 is tightly attached to the inner surface of the outer casing 12, so that the heat of the outer casing 12 is transferred to the outer casing 12 through the heat dissipation ribs 111, the heat transfer efficiency is much higher than that of air, then the outer casing 12 can dissipate heat, and the heat exchange area between the outer casing 12 and the air flow is further increased, so that the heat dissipation capacity of the front casing 1 can be effectively improved. For the convenience of installation and also for improving the efficiency of heat conduction, the bottom surfaces of the heat dissipation ribs 111 are directly connected to the outer surface of the inner housing 11, and preferably, the heat dissipation ribs 111 are integrally formed with the inner housing 11 as a single structure, as shown in fig. 4.

As shown in fig. 5, in order to prevent the heat dissipation ribs 111 from obstructing the smooth air intake of the first through hole 121, an outer surface area of the inner housing 11 opposite to the first through hole 121 is a plane, that is, the heat dissipation ribs 111 are not disposed in the outer surface area of the inner housing 11 opposite to the first through hole 121.

As shown in fig. 1 to 5, in order to enlarge the intake air amount of the air flow passage 13 and also to make the air flow more easily and smoothly circulate in the air flow passage 13, the front case 1 is shaped like a cone or a trumpet, a small port of the front case 1 is connected to the front end of the rear case 2, and a large port of the front case 1 is connected to the optical unit 7 through the snap ring unit 8. Of course, the front case 1 may be formed in a cylindrical shape according to actual needs.

As shown in fig. 2, 3 and 5, the lamp further includes a heat exchanger 5, the heat exchanger 5 is disposed in the second accommodating cavity 21 and connected to the rear housing 2, and the heat exchanger 5 is located between the light source assembly 3 and the exhaust assembly 4. Heat exchanger 5 mainly dispels the heat to light source module 3, and heat transfer to heat exchanger 5 on the light source module 3 when the air current flows through second holding chamber 21, can realize carrying out the heat transfer with heat exchanger 5, and then realizes the cooling to heat exchanger 5 to the realization is to the cooling of light source module 3.

A plurality of radiating fins 51 arranged at intervals are arranged in the heat exchanger 5, the air inlet end face of the heat exchanger 5 is tightly attached to the heating substrate of the light source component 3, and the air outlet end face of the heat exchanger 5 is opposite to the air inlet of the exhaust component 4. The heat on the heating substrate of the light source assembly 3 is rapidly transferred to the heat dissipation fins 51 on the heat exchanger 5, and the exhaust assembly 4 works, so that the airflow of the second accommodating cavity 21 passes through the air inlet end face of the heat exchanger 5 as much as possible, the airflow passes through a plurality of gaps formed by the heat dissipation fins 51, and then exchanges heat with the heat dissipation fins 51, and is exhausted through the second through holes 101 through the exhaust assembly 4, and the heat dissipation of the heat exchanger 5 is realized.

In order to make the air flow in the rear shell 2 pass through the heat exchanger 5 as much as possible and improve the heat exchange efficiency of the heat exchanger 5, a flow guide cover 6 is arranged between the exhaust assembly 4 and the heat exchanger 5. The air guide sleeve 6 is of a horn-shaped structure, the large opening end of the air guide sleeve 6 is connected with the air outlet of the heat exchanger 5 in a sealing mode, and the small opening end of the air guide sleeve 6 is connected with the air inlet of the exhaust assembly 4 in a sealing mode. The air outlet of the exhaust component 4 faces the second through hole 101 of the rear cover 10. The exhaust assembly 4 discharges the heat-exchanged air flow through the second through hole 101.

In this embodiment, the exhaust component 4 may be an air extractor such as a fan or an exhaust fan, and the exhaust component 4 works, because the optical component 7 seals the front end surface of the front housing 1, negative pressure is formed in the second accommodating cavity 21 and the airflow channel 13, so that external air is forced to flow through the first through hole 121 and enter the airflow channel 13, then enter the rear housing 2, sequentially flow through the heat exchanger 5 and the air guide sleeve 6, and finally blow to the second through hole 101 through the exhaust component 4, which not only realizes heat dissipation of the front housing 1, but also realizes heat dissipation of the heat exchanger 5 in the rear housing 2, thereby realizing heat dissipation and temperature reduction of the whole lamp, as shown in fig. 5, arrows in the drawing are the flowing direction of the airflow. In order to prevent the external air flow from flowing backward into the second accommodating cavity 21 through the second through hole 101, the area of the air outlet of the exhaust component 4 is not smaller than that of the second through hole 101, the air outlet of the exhaust component 4 faces the second through hole 101, and the air outlet of the exhaust component 4 needs to be close to and close to the second through hole 101.

An inner lens 9 is installed in the first accommodating cavity 14 or the second accommodating cavity 21 of the lamp, the inner lens 9 is located in front of the light source assembly 3, and the inner lens 9 mainly focuses light emitted by the light source assembly 3, so that the light can be focused to realize high-power, high-brightness and small-angle light emission. Of course, according to actual needs, the distance between the inner lens 9 and the light source assembly 3 is adjustable, and the position of the inner lens 9 can be adjusted through the adjusting screw rod, so that the focus of the inner lens 9 can be changed to adapt to lamps with different specifications.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (12)

1. A light fixture, comprising:

a front housing (1) provided with a first accommodation chamber (14);

the rear shell (2) is connected with the rear end of the front shell (1) and is provided with a second containing cavity (21), the first containing cavity (14) is communicated with the second containing cavity (21), and the rear shell (2) is provided with a second through hole (101) for communicating the second containing cavity (21) with the outside air;

a light source assembly (3) disposed in the first accommodating chamber (14) or the second accommodating chamber (21), the light source assembly (3) being configured to generate light emitted toward the front housing (1); and

the exhaust assembly (4) is arranged in the second accommodating cavity (21) and is connected with the rear shell (2);

wherein, procapsid (1) includes interior casing (11) and shell body (12), shell body (12) with back casing (2) are connected, shell body (12) encircle interior casing (11) sets up outward, just shell body (12) with there is interval in order to form air current channel (13) that supply the air current circulation between interior casing (11), interior casing (11) are kept apart air current channel (13) with first holding chamber (14), air current channel (13) with communicate between second holding chamber (21), exhaust subassembly (4) are configured into, allow outside air current to be in air current channel (13), second holding chamber (21) and second through-hole (101) and outside air circulation.

2. A light fixture as claimed in claim 1, further comprising an optical assembly (7), said optical assembly (7) being arranged on said front housing (1) for receiving light of said light source assembly (3), wherein said light fixture further comprises a snap ring assembly (8), said snap ring assembly (8) being connected with a front end of said front housing (1), said optical assembly (7) being arranged in the center of said snap ring assembly (8).

3. A lamp as claimed in claim 2, wherein a first through hole (121) is formed in the clip ring assembly (8) or the outer housing (12), the inner housing (11) isolates the first through hole (121) from the first receiving cavity (14), the first through hole (121) is communicated with the airflow channel (13), and the exhaust assembly (4) is configured to allow external airflow to pass through the first through hole (121), the airflow channel (13), the second receiving cavity (21) and the second through hole (101) in sequence and then to exhaust to the outside.

4. A lamp as claimed in claim 3, wherein the first through holes (121) are provided in plural numbers, the plural first through holes (121) are uniformly arranged on the circumferential surface of the snap ring assembly (8), or the plural first through holes (121) are uniformly arranged on the front end surface of the snap ring assembly (8); the plurality of first through holes (121) are surrounded on the outer periphery of the optical component (7).

5. A lamp as claimed in claim 3, wherein the first through holes (121) are provided in plural numbers, the plural first through holes (121) are uniformly arranged on the peripheral surface of the front end of the outer shell (12) close to the optical assembly (7), and the plural first through holes (121) form a hollowed through hole surface.

6. A lamp as claimed in any one of claims 1 to 5, characterized in that heat dissipating ribs (111) are provided between the inner casing (11) and the outer casing (12), the length extension direction of the heat dissipating ribs (111) is the same as the air flow circulation direction in the air flow channel (13), and the heat dissipating ribs (111) are arranged at intervals along the circumference of the inner casing (11).

7. A lamp as claimed in claim 2, wherein the inner cavity of the inner housing (11) increases gradually along the light emitting direction of the light source assembly (3), the outer housing (12) and the inner housing (11) are arranged in parallel, the small port of the outer housing (12) is connected to the rear housing (2), the large port of the outer housing (12) is connected to the snap ring assembly (8), the small port of the inner housing (11) and the rear housing (2) are arranged at an interval, the large port of the inner housing (11) is connected to the snap ring assembly (8), and the optical assembly (7) comprises one of a convex lens, a fresnel lens and a soft light sheet.

8. A lamp as claimed in any one of claims 1 to 5, characterized by further comprising a heat exchanger (5), said heat exchanger (5) being disposed in said second housing chamber (21) and connected to said rear housing (2), said heat exchanger (5) being located between said light source assembly (3) and said exhaust assembly (4).

9. A lamp as claimed in claim 8, wherein a plurality of heat dissipating fins (51) are disposed in the heat exchanger (5) at intervals, an air inlet end surface of the heat exchanger (5) is close to a heat generating substrate of the light source assembly (3), and an air outlet end surface of the heat exchanger (5) faces an air inlet of the exhaust assembly (4) to allow an air flow to pass through a gap formed by the plurality of heat dissipating fins (51) from the light source assembly (3) to the exhaust assembly (4).

10. A lamp as claimed in claim 8, characterized in that the lamp further comprises a flow guide cover (6), one end face of the flow guide cover (6) is connected with the air inlet of the exhaust assembly (4) in a sealing manner, and the other end of the flow guide cover (6) is connected with the air outlet end face of the heat exchanger (5) in a sealing manner.

11. A lamp as claimed in claim 10, wherein the inner cavity of the air guide sleeve (6) increases progressively in the direction from the exhaust assembly (4) to the heat exchanger (5), the large opening end of the air guide sleeve (6) is in sealing connection with the air outlet end face of the heat exchanger (5), and the small opening end of the air guide sleeve (6) is in sealing connection with the air inlet of the exhaust assembly (4).

12. A lamp as claimed in any one of claims 1 to 5, characterized in that the lamp further comprises a rear cover (10) covering the rear end of the rear housing, the second through hole (101) is arranged in the middle of the rear cover (10), and the air outlet of the exhaust assembly (4) is opposite to the second through hole (101).

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