CN107420812B

CN107420812B - Telescopic lamp

Info

Publication number: CN107420812B
Application number: CN201710518201.4A
Authority: CN
Inventors: 叶伟炳
Original assignee: Dongguan Wenyu Industrial Co Ltd
Current assignee: Dongguan Wenyu Industrial Co Ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2020-03-24
Anticipated expiration: 2037-06-29
Also published as: CN107420812A

Abstract

The invention relates to a telescopic lamp. The telescopic lamp comprises a lamp housing, a driving piece, a lighting assembly and a dust cover; the lamp shell comprises a cylindrical shell and a mounting seat connected to the bottom of the cylindrical shell; the driving piece is arranged in the mounting seat, and an output shaft of the driving piece penetrates through the cylindrical shell; the lighting assembly comprises a movable mounting plate, a light bar and a plurality of LED lamp beads, the movable mounting plate is accommodated in the cylindrical shell and connected to an output shaft of the driving part, the light bar is convexly arranged on the movable mounting plate, and the plurality of LED lamp beads are arranged on the light bar; the dustproof cover is arranged on the cylindrical shell and covers one side of the movable mounting plate. The dustproof effect of the telescopic lamp is better.

Description

Telescopic lamp

Technical Field

The invention relates to a telescopic lamp.

Background

With the development of the urban traffic industry, the styles of street lamps are more and more. For example, street lights generally include a light housing and a light bulb mounted within the light housing. However, since the bulb is directly exposed outside the lamp housing, the bulb is subjected to dust intrusion throughout the year, and the lighting effect is affected.

Disclosure of Invention

Therefore, a telescopic lamp with a good dustproof effect is needed.

A telescopic lamp comprises a lamp housing, a driving piece, a lighting assembly and a dust cover; the lamp shell comprises a cylindrical shell and a mounting seat connected to the bottom of the cylindrical shell; the driving piece is arranged in the mounting seat, and an output shaft of the driving piece penetrates through the cylindrical shell; the lighting assembly comprises a movable mounting plate, a light bar and a plurality of LED lamp beads, the movable mounting plate is accommodated in the cylindrical shell and connected to an output shaft of the driving part, the light bar is convexly arranged on the movable mounting plate, and the plurality of LED lamp beads are arranged on the light bar; the dustproof cover is arranged on the cylindrical shell and covers one side of the movable mounting plate, an exposure slit is formed in the dustproof cover corresponding to the light bar, and the driving piece is used for driving the light bar to extrude out of the exposure slit and expose out of the dustproof cover or retract into the dustproof cover.

In one embodiment, a receiving space is formed in the cylindrical housing, and the lighting assembly is received in the receiving space.

In one embodiment, the light bar comprises a first protruding strip and a second protruding strip, and the first protruding strip and the second protruding strip are arranged in a crossed manner.

In one embodiment, the exposure slit includes a first slit and a second slit intersecting with each other, the first slit is aligned with the first rib, and the second slit is aligned with the second rib.

In one embodiment, the first slit and the second slit each extend along a straight line.

In one embodiment, the first slit is formed with first elastically deformable edges on opposite sides thereof, and the second slit is formed with second elastically deformable edges on opposite sides thereof.

In one embodiment, the width of the first slit is smaller than the width of the first rib, and the width of the second slit is smaller than the width of the second rib.

In one embodiment, the width of the first slit is 0.3 to 0.7 times the width of the first rib.

In one embodiment, a plurality of wire passing cylinders are convexly arranged on the movable mounting plate, and wire passing grooves are formed in the wire passing cylinders.

In one embodiment, an installation space is formed in the installation seat, the driving member is disposed in the installation space, and a plurality of installation grooves are formed in a side wall of the installation seat.

When daytime need not the illumination, the driving piece drive the mounting panel drives lamp strip immigration in the dust cover, thereby can utilize the dust cover prevents that the dust from invading on the lamp strip, thereby make telescopic lamps and lanterns's dustproof effect is better, moreover because it is used to expose the extrusion of the side of seam, can utilize the side friction that exposes the seam a plurality of LED lamp pearls remove dust on the LED lamp pearl.

Drawings

Fig. 1 is a schematic perspective view of a retractable lamp according to an embodiment.

Fig. 2 is a perspective view of the retractable light fixture shown in fig. 1 with the dust cover removed.

Fig. 3 is a perspective view of the retractable light fixture shown in fig. 1 from another viewing angle.

Fig. 4 is a cross-sectional view of a heat dissipation mechanism of an embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to a telescopic lamp. For example, the telescopic lamp comprises a lamp housing, a driving member, a lighting assembly and a dust cover. For example, the lamp housing comprises a cylindrical shell and a mounting seat connected to the bottom of the cylindrical shell; the driving piece is installed in the mounting seat, and an output shaft of the driving piece penetrates through the cylindrical shell. For example, the lighting assembly comprises a movable mounting plate, a light bar and a plurality of LED lamp beads, the movable mounting plate is accommodated in the cylindrical shell and connected to the output shaft of the driving part, and the light bar is convexly arranged on the movable mounting plate. For example, the plurality of LED beads are mounted on the light bar; the dustproof cover is arranged on the cylindrical shell and covers one side of the movable mounting plate, and an exposure seam is formed in the dustproof cover corresponding to the light bar. For example, the driving piece is used for driving the light bar to extrude the exposing gap and expose outside the dust cover. For another example, a retractable light fixture includes a housing, a driving member, a lighting assembly, and a dust cover. For example, the lamp housing comprises a cylindrical shell and a mounting seat connected to the bottom of the cylindrical shell; the driving piece is installed in the mounting seat, and an output shaft of the driving piece penetrates through the cylindrical shell. For example, the lighting assembly comprises a movable mounting plate, a light bar and a plurality of LED lamp beads, the movable mounting plate is accommodated in the cylindrical shell and connected to the output shaft of the driving part, and the light bar is convexly arranged on the movable mounting plate. For example, the plurality of LED beads are mounted on the light bar; the dustproof cover is arranged on the cylindrical shell and covers one side of the movable mounting plate, and an exposure seam is formed in the dustproof cover corresponding to the light bar. For example, the driving piece is used for driving the light bar to extrude the exposing gap and expose outside the dust cover or retract into the dust cover.

Referring to fig. 1 to 3, a retractable lamp 100 includes a lamp housing 10, a driving member 20, a lighting assembly 30 and a dust cover 40; the lamp housing comprises a cylindrical shell 11 and a mounting seat 13 connected to the bottom of the cylindrical shell; the driving piece is arranged in the mounting seat, and an output shaft of the driving piece penetrates through the cylindrical shell; the lighting assembly comprises a movable mounting plate 31, a light bar 32 and a plurality of LED lamp beads 33, the movable mounting plate is accommodated in the cylindrical shell and connected to an output shaft of the driving part, the light bar is convexly arranged on the movable mounting plate, and the plurality of LED lamp beads are arranged on the light bar; the dustproof cover is arranged on the cylindrical shell and covers one side of the movable mounting plate, an exposure slit 41 is formed in the dustproof cover corresponding to the light bar, and the driving piece is used for driving the light bar to extrude out of the exposure slit and expose out of the dustproof cover or retract into the dustproof cover.

For example, the retractable light fixture 100 is specifically used as follows:

the mounting base is mounted on a lamp post, when illumination is needed, the driving piece drives the mounting plate to move in the cylindrical shell, the lamp strip is enabled to extrude the exposure seam of the dust cover, the LED lamp beads are enabled to be exposed out of the exposure seam, and then illumination is conducted through the LED lamp beads. When daytime need not the illumination, the driving piece drive the mounting panel drives lamp strip immigration in the dust cover, thereby can utilize the dust cover prevents that the dust from invading on the lamp strip, thereby make telescopic lamps and lanterns's dustproof effect is better, moreover because it is used to expose the extrusion of the side of seam, can utilize the side friction that exposes the seam a plurality of LED lamp pearls remove dust on the LED lamp pearl.

For example, in order to facilitate the extrusion of the light bar, a receiving space 111 is formed in the cylindrical housing, and the lighting assembly is received in the receiving space. The light bar comprises a first protruding strip 321 and a second protruding strip 322, and the first protruding strip and the second protruding strip are arranged in a crossed manner. The exposure slit comprises a first slit 411 and a second slit 413 intersecting with each other, the first slit is aligned with the first protruding strip, and the second slit is aligned with the second protruding strip. The first slit and the second slit both extend along a straight line. First elastically deformable edges 412 are formed on opposite sides of the first slit, respectively, and second elastically deformable edges 414 are formed on opposite sides of the second slit, respectively. The width of the first slit is smaller than that of the first convex strip, and the width of the second slit is smaller than that of the second convex strip. The width of the first slit is 0.3-0.7 times of the width of the first convex strip. For example, the first elastically deformable edge and the second elastically deformable edge are both provided with erase bars. The first slit and the second slit are small in width by utilizing the elasticity of the first elastic deformation edge and the second elastic deformation edge, so that dust can be prevented from entering the accommodating space, and the light bar is easy to extrude. In addition, as the first elastic deformation edge and the second elastic deformation edge are provided with the erasing strips, the LED lamp beads passing through the exposed gap can be rubbed by using the erasing strips so as to remove dust on the LED lamp beads.

For example, in order to facilitate installation of the retractable lamp, a plurality of wire passing cylinders 34 are convexly arranged on the movable mounting plate, and wire passing grooves 341 are formed in the wire passing cylinders. An installation space 131 is formed in the installation seat, the driving piece is arranged in the installation space, and a plurality of installation grooves 133 are formed in the side wall of the installation seat. The installation of the telescopic lamp is easy by arranging the installation grooves on the installation seat.

For example, in order to be in heat dissipation when telescopic lamps and lanterns are opened, dustproof and dampproofing when closing, telescopic lamps and lanterns still include heat dissipation mechanism, heat dissipation mechanism includes a heat dissipation section of thick bamboo, radiating block and movable cover, a heat dissipation section of thick bamboo connect in on the cylindric casing, and it is protruding to be equipped with the heat dissipation dish, the radiating block wears to locate on the lateral wall of a heat dissipation section of thick bamboo and with the heat dissipation dish is connected, the heat dissipation dish is the circular shape aluminum alloy block, the heat dissipation dish epirelief is equipped with the telescopic link, the telescopic link is made for memory alloy, the end connection of telescopic link in on the movable cover. The diameter of the telescopic rod is gradually reduced along the direction far away from the heat dissipation disc. The heat dissipation dish epirelief is equipped with to keep off and establishes the piece, keep off establish the piece including the spliced pole and be formed at the fender of spliced pole tip establishes the lid, the mount pad install in keep off establish and cover. The spliced pole protruding is located the middle part position of heat dissipation dish to wear to locate with sliding in the movable cover, keep off and establish the lid and keep off and locate the movable cover deviates from one side of heat dissipation dish, the movable cover has seted up the hole of wearing to establish, the spliced pole is worn to locate in the hole of wearing to establish. The movable cover is provided with an accommodating groove, the penetrating hole is formed in the bottom surface of the accommodating groove, the blocking cover is movably accommodated in the accommodating groove, the thickness of the blocking cover is equal to the depth of the accommodating groove, and the surface of the blocking cover is flush with the surface of the movable cover. The heat dissipation device comprises a heat dissipation cylinder, a heat dissipation disc and a heat dissipation plate, wherein the heat dissipation cylinder is a circular cylinder, the heat dissipation disc is a circular block, an accommodating space is formed in the heat dissipation cylinder, the heat dissipation disc is arranged in the accommodating space, and the height of the heat dissipation disc is smaller than the depth of the accommodating space. The diameter of the heat dissipation disc is smaller than the inner diameter of the heat dissipation cylinder, an annular heat dissipation channel is formed between the heat dissipation disc and the inner side face of the heat dissipation cylinder, and the heat dissipation block is arranged in the annular heat dissipation channel in a blocking mode. An air inlet hole is formed in the bottom of the heat dissipation cylinder, and the air inlet hole penetrates through the bottom of the heat dissipation cylinder and penetrates through the side wall of the heat dissipation disc. The air access hole is a circular hole. The air inlet hole is internally provided with a blocking piece and a pulling rod, the blocking piece is arranged in the air inlet hole in a sliding manner, two opposite ends of the pulling rod are respectively connected to the blocking piece and the movable cover, and the blocking piece is a circular piece. The air inlet hole comprises a through section and a guide section which are oppositely arranged, the through section is arranged at the bottom of the heat dissipation cylinder, and the guide section is only concavely arranged on the side wall of the heat dissipation disc. The holding rod is a cylindrical rod, and the diameter of the holding rod is smaller than that of the connecting column. The heat dissipation plate is characterized in that the pulling rod is a rubber rod, the pulling rod is connected to the central position of the baffle plate, an embedding ring is convexly arranged on the periphery of the movable cover, an accommodating ring groove is concavely arranged on the periphery of the heat dissipation cylinder, the embedding ring is inserted into the accommodating ring groove, a plurality of heat dissipation holes are formed in the heat dissipation block, and the plurality of heat dissipation holes face the heat dissipation cylinder and extend to the heat dissipation plate. The diameter of the heat dissipation cylinder is larger than that of the cylindrical shell, and the air inlet hole is exposed out of one side of the cylindrical shell. In order to cover the cylindric casing, still cover on the heat dissipation section of thick bamboo and be equipped with the cover and establish the ring, the cover is established the ring and is slided ground the cover and locate on the heat dissipation section of thick bamboo, the relative both sides of slip ring are connected with tensile pole respectively, the tip of two tensile poles connect respectively in the relative both sides of movable cover, the relative both sides wall of a heat dissipation section of thick bamboo is concave respectively and is equipped with the slip recess, the bottom surface of slip recess is the arc to concave locating on the lateral wall of a heat dissipation section of thick bamboo. The bottom surface of the sliding groove is provided with a sliding layer, the stretching rod is a circular rod, and the stretching rod is slidably attached to the sliding layer. The heat dissipation mechanism can open the heat dissipation cylinder when the telescopic lamp is started so as to improve the heat dissipation efficiency. When the telescopic lamp is closed, the movable cover of the heat dissipation mechanism can be covered on the heat dissipation cylinder, so that the heat dissipation cylinder is sealed to play a dustproof and moistureproof role.

For example, in order to describe the specific structure and beneficial effects of the heat dissipation mechanism in further detail, please refer to fig. 4, the telescopic lamp further includes a heat dissipation mechanism 50, the heat dissipation mechanism includes a heat dissipation cylinder 51, a heat dissipation block 52 and a movable cover 53, the heat dissipation cylinder is connected to the cylindrical housing, and a heat dissipation disc 54 is convexly disposed in the heat dissipation cylinder, the heat dissipation block is disposed on the side wall of the heat dissipation cylinder in a penetrating manner and connected to the heat dissipation disc, the heat dissipation disc is a circular aluminum alloy block, an expansion link 55 is convexly disposed on the heat dissipation disc, the expansion link is made of memory alloy, and the end of the expansion link is connected to the movable cover. For example, in order to facilitate the extension and retraction of the telescopic rod, the diameter of the telescopic rod is gradually reduced along the direction away from the heat dissipation disc. For example, when the heat dissipation cylinder is heated, the heat dissipation cylinder conducts heat to the heat dissipation block and the heat dissipation disc, and meanwhile, the telescopic rod is heated and extends, so that the movable cover is pushed to be away from the heat dissipation cylinder, the heat dissipation cylinder is opened, the heat dissipation disc is exposed to the outside, and heat dissipation of the heat dissipation disc is facilitated. When the heat received by the heat dissipation mechanism is small, heat dissipation can be completed only by the heat dissipation block, so that the movable cover is prevented from being opened, and dust and moisture are prevented from entering the heat dissipation cylinder. When the heat is more, the telescopic rod lifts and opens the movable cover, so that the heat dissipation plate can dissipate heat outwards, and the heat dissipation efficiency of the heat dissipation mechanism is improved. And after the heat dissipation mechanism is cooled, the telescopic rod can be contracted, so that the movable cover is driven to close the heat dissipation cylinder, and dust and the like are prevented from entering the heat dissipation cylinder. For example, in order to avoid the falling of the movable cover, the heat dissipation plate is convexly provided with a blocking piece 56, the blocking piece comprises a connecting column 561 and a blocking cover 563 formed at the end of the connecting column, and the mounting seat is connected to the blocking cover. The spliced pole is protruding to be located the middle part position of heat dissipation dish to wear to locate with sliding in the movable cover, keep off and establish the lid and keep off and locate the movable cover deviates from one side of heat dissipation dish, thereby can utilize the fender is established the lid and is kept off and establish the movable cover makes the movable cover can not follow break away from on the heat dissipation section of thick bamboo. For example, in order to facilitate the penetration of the blocking member, a penetrating hole is formed in the movable cover, and the connecting column is penetrated in the penetrating hole. For example, in order to accommodate the blocking cover, the movable cover is provided with an accommodating groove 531, the through hole is formed in the bottom surface of the accommodating groove, the blocking cover is movably accommodated in the accommodating groove, the thickness of the blocking cover is equal to the depth of the accommodating groove, that is, when the blocking cover is accommodated in the accommodating groove, the surface of the blocking cover is flush with the surface of the movable cover.

For example, in order to facilitate heat dissipation, the heat dissipation cylinder is a circular cylinder, the heat dissipation disc is a circular block, an accommodation space 511 is formed in the heat dissipation cylinder, the heat dissipation disc is arranged in the accommodation space, and the height of the heat dissipation disc is smaller than the depth of the accommodation space. In order to further improve the heat exchange efficiency of air, the diameter of the heat dissipation disc is smaller than the inner diameter of the heat dissipation cylinder, namely, an annular heat dissipation channel is formed between the heat dissipation disc and the inner side surface of the heat dissipation cylinder, and the heat dissipation block is arranged in the annular heat dissipation channel in a blocking mode. Because the annular heat dissipation channel is arranged in the heat dissipation cylinder, under the condition that the movable cover is opened, outside cold air can enter the heat dissipation cylinder and flow along the annular heat dissipation channel, so that heat on the heat dissipation disc is taken away.

For example, in order to facilitate the flow of air in the annular heat dissipation channel, an air inlet hole is formed in the bottom of the heat dissipation cylinder, and the air inlet hole penetrates through the bottom of the heat dissipation cylinder and penetrates through the side wall of the heat dissipation disc. When the movable cover is opened, cold air flow in the air access hole can enter the annular heat dissipation channel, so that the heat dissipation efficiency is improved. For example, the air inlet hole is a circular hole. For example, in order to prevent dust from entering the air inlet during cooling, a blocking piece and a pull rod 57 are disposed in the air inlet, the blocking piece is slidably disposed in the air inlet, and opposite ends of the pull rod are respectively connected to the blocking piece and the movable cover, that is, one end of the pull rod is connected to the blocking piece, and the other end of the pull rod is connected to the movable cover. For example, the stopper piece is a circular piece. When the movable cover is lifted away from the heat dissipation cylinder by the telescopic rod, the pull rod pulls the baffle establishing piece to move in the air access hole, so that the baffle establishing piece opens the air access hole, cold air can enter the air access hole and flow along the annular heat dissipation channel, and finally flows out from the upper side of the heat dissipation cylinder to take away heat of the heat dissipation disc. For example, because the heat dissipation disc is convexly arranged on the bottom of the heat dissipation cylinder, the air inlet hole may include a through section and a guide section which are oppositely arranged, the through section is arranged on the bottom of the heat dissipation cylinder, and the guide section is only concavely arranged on the side wall of the heat dissipation disc. When the blocking piece moves for a short distance, the blocking piece can be separated from the through section, then the blocking piece moves along the guide section, at the moment, the blocking piece is separated from the bottom of the heat dissipation cylinder, so that outside cold air can enter the annular heat dissipation channel through the through section of the air access hole and flow in the annular heat dissipation channel, and the blocking piece continues to move in the guide section to guide and adjust the movable cover. For example, the tie rod is a cylindrical rod having a diameter smaller than the diameter of the attachment post. In order to provide a small deflection tolerance for the blocking piece, the pull rod is a flexible rod, for example, the pull rod is a rubber rod, and when the blocking piece generates a small deflection, the pull rod can generate a small bending by using the elasticity of the pull rod so as to adapt to the continuous movement of the blocking piece.

For example, in order to facilitate pulling the blocking piece, the pulling rod is connected to the central position of the blocking piece, and the blocking piece can be smoothly pulled to slide in the air access hole by the arrangement. For example, in order to facilitate the covering of the movable cover, an embedding ring is convexly arranged on the periphery of the movable cover, an accommodating ring groove is concavely arranged on the periphery of the heat radiating cylinder, and the embedding ring is inserted into the accommodating ring groove, so that the sealing degree of the movable cover is improved, and the heat radiating cylinder can be better sealed to prevent dust and moisture from invading. For example, in order to improve the heat dissipation effect of the heat dissipation block, a plurality of heat dissipation holes 521 are formed in the heat dissipation block, and extend toward the heat dissipation cylinder and extend onto the heat dissipation plate.

For example, in order to protect the telescopic lamp, the diameter of the heat radiation cylinder is larger than that of the cylindrical housing, and the air inlet hole is exposed to one side of the cylindrical housing. In order to cover the cylindrical shell, a cover ring 58 is further arranged on the heat dissipation cylinder in a covering mode, the cover ring is slidably sleeved on the heat dissipation cylinder, the two opposite sides of the sliding ring are respectively connected with stretching rods, namely, one side of the sliding rod is convexly provided with the stretching rod, the other side of the sliding ring is also convexly provided with the stretching rod, the end parts of the two stretching rods are respectively connected to the two opposite sides of the movable cover, namely, one stretching rod is connected to one side of the movable cover, and the other stretching rod is connected to the other side of the movable cover. When the movable cover is separated from the heat dissipation cylinder, the covering ring can slide along the outer side wall of the heat dissipation cylinder and expose the cylindrical shell, so that the cylindrical shell can dissipate heat automatically. In addition, in order to facilitate the sliding of the two stretching rods, two opposite side walls of the heat dissipation cylinder are respectively concavely provided with sliding grooves, and the bottom surfaces of the sliding grooves are arc-shaped and are concavely arranged on the side walls of the heat dissipation cylinder. For example, in order to facilitate the sliding of the stretching rod, a sliding layer is disposed on a bottom surface of the sliding groove, the stretching rod is a circular rod, and the stretching rod is slidably attached to the sliding layer. The two stretching rods can slide along the sliding grooves by arranging the sliding grooves on the two opposite side walls of the heat dissipation cylinder, so that the cover ring can be guided to slide conveniently, the cover ring cannot rotate, and the heat dissipation cylinder can be sleeved with the cover ring accurately.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A telescopic lamp comprises a lamp shell, a driving piece, a lighting assembly and a dust cover, and is characterized in that the lamp shell comprises a cylindrical shell and a mounting seat connected to the bottom of the cylindrical shell;

the driving piece is arranged in the mounting seat, and an output shaft of the driving piece penetrates through the cylindrical shell;

the lighting assembly comprises a movable mounting plate, a light bar and a plurality of LED lamp beads, the movable mounting plate is accommodated in the cylindrical shell and connected to an output shaft of the driving part, the light bar is convexly arranged on the movable mounting plate, and the plurality of LED lamp beads are arranged on the light bar;

the dustproof cover is arranged on the cylindrical shell and covers one side of the movable mounting plate, an exposure slit is formed in the dustproof cover corresponding to the light bar, and the driving piece is used for driving the light bar to extrude out of the exposure slit and expose out of the dustproof cover or retract into the dustproof cover.

2. The retractable light fixture of claim 1 wherein a receiving space is formed in the cylindrical housing, and the light assembly is received in the receiving space.

3. The retractable light fixture of claim 1, wherein the light bar comprises a first rib and a second rib, and the first rib and the second rib are arranged in a crossed manner.

4. The retractable light fixture of claim 3 wherein the exposure slit comprises a first slit and a second slit intersecting with each other, the first slit aligned with the first rib and the second slit aligned with the second rib.

5. The retractable light fixture of claim 4 wherein the first slit and the second slit each extend in a straight line.

6. The retractable light fixture of claim 4 wherein the first slit is formed with first elastically deformable edges on opposite sides thereof and the second slit is formed with second elastically deformable edges on opposite sides thereof.

7. The retractable light fixture of claim 6 wherein the width of the first slot is less than the width of the first rib and the width of the second slot is less than the width of the second rib.

8. The retractable light fixture of claim 7 wherein the width of the first slit is 0.3-0.7 times the width of the first rib.

9. The retractable light fixture of claim 7, wherein a plurality of wire passing cylinders are convexly arranged on the movable mounting plate, and wire passing grooves are formed in the wire passing cylinders.

10. The retractable lamp as claimed in claim 1, wherein a mounting space is formed in the mounting seat, the driving member is disposed in the mounting space, and a plurality of mounting grooves are formed on a side wall of the mounting seat.