Traffic signal light cleaning system and cleaning method

Abstract

The present invention belongs to the technical field of cleaning devices, and specifically relates to a traffic signal light cleaning system and cleaning method, including a hood, a handle is provided on one side of the hood, a liquid spraying assembly is provided on the handle, a mounting cavity is provided on the side of the hood away from the handle, a cleaning disc is provided inside the mounting cavity and is arranged offset from the axis of the hood, a dust collecting disc is provided inside the mounting cavity and on the same side of the cleaning disc, the mounting cavity includes a first-step groove, a second-step groove and a third-step groove which are progressively provided inside the hood, and a main gear is provided in the middle of the first-step groove. The present invention can prevent excessive water from hanging on the wall of the lamp surface, and can also better avoid the problem of water stains and scratches on the lamp surface, realize the simultaneous cleaning, dust collection and drying, and can reduce the probability of detergent residue on the lamp surface due to failure to dry in time, which accelerates the aging of the lamp surface, and also improves the maintenance performance of the lamp surface through the pre-drying procedure.

Description

Technical Field

[0001] The present invention belongs to the technical field of traffic signal light cleaning devices, and in particular relates to a traffic signal light cleaning system and a cleaning method. Background Art

[0002] Traffic lights are a category of traffic safety products. They are an important tool to strengthen road traffic management, reduce the occurrence of traffic accidents, improve road use efficiency, and improve traffic conditions. They are suitable for intersections such as crosses and T-shaped intersections. They are controlled by road traffic signal controllers to guide vehicles and pedestrians to pass safely and orderly. They are generally composed of red, green, and yellow lights. Red lights indicate that passage is prohibited, green lights indicate that passage is allowed, and yellow lights indicate warnings. Traffic lights are mostly placed at intersections with heavy traffic, and red and green lights are internationally unified traffic lights.

[0003] Problems with existing technologies:

[0004] Traffic lights are mostly installed outdoors at intersections. After bad weather or long-term exposure to the sun and rain, the light-emitting indicator parts of the lights become dirty or blocked, affecting the city appearance. At this time, the lights need to be cleaned regularly. During the cleaning process, workers need to use at least two tools at the same time: detergent and rag. Different traffic lights use different detergents for cleaning, and then use rags to wipe their surfaces dry to protect the internal wicks of the internal lights.

[0005] Based on the above situation, in actual operations, manual cleaning is already a high-altitude operation, coupled with the more cumbersome maintenance steps, this process increases the risk of workers' operations, and because the signal light is always on and is only turned off during cleaning, the wick inside the signal light is still in a hot state. At this time, the cleaning agent acts on the lamp surface and cannot be dried in time, but will accelerate the aging of the lamp surface, resulting in a reduced service life of the signal light. Summary of the invention

[0006] The purpose of the present invention is to provide a traffic signal light cleaning system and cleaning method, which can prevent excessive water from hanging on the wall of the lamp surface, and better avoid the problem of water stains and scratches on the lamp surface, realize the simultaneous cleaning, vacuuming and drying, and reduce the probability of detergent residue on the lamp surface due to failure to dry in time, thereby accelerating the aging of the lamp surface. At the same time, the maintenance performance of the lamp surface is improved through the pre-drying procedure.

[0007] The technical solution adopted by the present invention is as follows:

[0008] A traffic signal light cleaning system and cleaning method, comprising a hood, a handle is provided on one side of the hood, a liquid spraying assembly is provided on the handle, a mounting cavity is provided on the side of the hood away from the handle, a cleaning disc is provided inside the mounting cavity and is arranged offset from the axis of the hood, and a dust collecting disc is provided inside the mounting cavity and on the same side of the cleaning disc;

[0009] The installation cavity includes a first-step groove, a second-step groove and a third-step groove which are progressively opened inside the hood, a main gear is arranged in the middle of the first-step groove, gear teeth are evenly distributed on the inner ring wall of the second-step groove to form an inner ring gear, and the inner ring gear in the second-step groove is meshed and connected with a sub-gear, the sub-gear is correspondingly arranged on the dust collecting disc, and the sub-gear is meshed and driven with the main gear;

[0010] A protruding boss is arranged in the installation cavity and at the center of the third-step groove. There is a gap between the third-step groove and the boss, forming a track groove for the secondary gear to drive the dust collecting disc to perform annular motion. A through groove is arranged on the third-step groove.

[0011] A driving motor is fixed inside the installation cavity and corresponding to the middle of the main gear. The driving motor rotates to drive the main gear to drive the auxiliary gear to rotate inside the installation cavity to form a planetary gear structure.

[0012] The cleaning disc comprises a large ring disc body, a groove is provided on one side of the large ring disc body facing the opening of the installation cavity, a first spring is fixed inside the groove, a pressure plate is limitedly arranged inside the groove, and a cleaning cloth is also buckled on the side of the large ring disc body;

[0013] The end of the first spring abuts against the pressure plate, forcing the pressure plate to protrude outward and press the cleaning cloth, so that the pressed side of the cleaning cloth bulges.

[0014] The main gear is fixed on the back side of the large ring disc body, and the main gear deviates from the center of the large ring disc body and is arranged coaxially with the machine cover.

[0015] The dust collecting disc comprises a small ring disc, an inner groove is formed on the side of the small ring disc facing away from the opening of the mounting cavity, an outer cover is also installed on the side of the small ring disc located at the inner groove, a bracket is installed inside the outer cover, a fan is fixed on one side of the bracket, a filter is installed on the other side of the bracket, an air outlet is formed on the side of the filter located on the outer cover, and the fan is a negative pressure suction type.

[0016] The auxiliary gear is rotatably sleeved on the annular wall of the outer cover.

[0017] The liquid spraying assembly comprises a liquid spraying button rotatably mounted on a handle, a reciprocating rod being arranged at the end of the liquid spraying button, one end of the reciprocating rod being spherical and rotatably arranged inside one end of the liquid spraying button, the other end of the reciprocating rod extending to the inside of the handle, a second spring being arranged on the annular side sleeve of the reciprocating rod and a sealing piston being connected to the extended end thereof.

[0018] The handle is provided with a reset cavity and a piston cavity corresponding to the second spring and the sealing piston, respectively. The handle is also provided with a liquid conducting channel connected to the piston cavity. The cavity opening of the liquid conducting channel is connected to the outside to form a water injection port.

[0019] A water injection ring groove is provided in the hood corresponding to the second-stage groove, a liquid circulation channel is provided between the piston cavity and the water injection ring groove, and a spray port is provided at the bottom of the hood corresponding to the water injection ring groove.

[0020] A suction hole is provided in the middle of one side of the small ring disk facing the opening of the installation cavity, and a brush is provided on the side of the small ring disk located outside the suction hole.

[0021] A method for cleaning a traffic signal light comprises the following steps:

[0022] Step 1: Turn off the signal light and let the light surface cool down. During this time, connect a cleaning bucket with a water pump (with cleaning agent inside the cleaning bucket) to the water filling port;

[0023] Step 2: After the preparation work is completed, hold the handle and wipe the signal light back and forth. During this process, press the spray button for the dirty position on the light surface, and the water pump pumps the detergent to the surface of the light surface to dissolve and separate the dirt on the surface;

[0024] Step 3: After the cleaning liquid is sprayed onto the lamp surface, the driving motor is started, and the driving motor drives the cleaning disc and the dust collecting disc to reciprocate, thereby removing dirt from the lamp surface and achieving simultaneous cleaning, dust collecting and drying;

[0025] Step 4: After cleaning the lamp surface, turn off the power of the cleaning device and check the cleaning condition of the lamp surface.

[0026] The technical effects achieved by the present invention are:

[0027] In the present invention, the raised side of the cleaning cloth is supported by the first spring and kept in close contact with the lamp surface. At this time, the convex surface of the pressure-bearing side of the cleaning cloth can be used as a pressing force point, so that at least one cleaning surface of the cleaning cloth is kept in contact with the lamp surface of the signal lamp, thereby ensuring the cleaning effect of the lamp surface and the cleaning cloth.

[0028] In the present invention, the large ring disc body rotates in the middle of the main gear in the first-step groove to form a sector-shaped cleaning area. When the large ring disc body rotates one cycle with the main gear, a cleaning cycle of the current cleaning surface is completed. While the large ring disc body rotates to clean the surface, the handle is supported and wiped back and forth, so that the detergent can fully act on the lamp surface, thereby accelerating the cleaning rate of the lamp surface.

[0029] The present invention uses negative pressure suction from the fan to suck air from the suction port and take away some floating dust, adding to the circulation of airflow to immediately dry the clean area of ​​the large ring disk, preventing excessive water from hanging on the lamp surface and better avoiding the problem of water stains and scratches on the lamp surface.

[0030] In the present invention, when the large ring disc rotates, the small ring disc is located at its side and rotates. When the large ring disc completes a cleaning cycle of the lower cleaning surface, the small ring disc also completes the dust collection and drying of the lower cleaning surface, thereby achieving simultaneous cleaning, dust collection and drying. This can reduce the probability of detergent residue on the lamp surface due to failure to dry in time, thereby accelerating the aging of the lamp surface. At the same time, the maintenance performance of the lamp surface is improved through the pre-drying procedure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a front structural schematic diagram of the hood in the present invention;

[0033] Figure 3 It is a schematic diagram of the back structure of the hood in the present invention;

[0034] Figure 4 It is a schematic diagram of the separation structure of the hood, the cleaning disc and the dust collecting disc in the present invention;

[0035] Figure 5 The present invention Figure 4 Schematic diagram of the three-dimensional structure of the cross section at AA;

[0036] Figure 6 It is a schematic diagram of the three-dimensional combined structure of the cleaning disc and the dust collecting disc in the present invention;

[0037] Figure 7 It is a schematic diagram of the separation structure of the cleaning disc in the present invention;

[0038] Figure 8 The present invention Figure 4 Schematic diagram of the three-dimensional structure of the cross section at BB;

[0039] Fig. 9 It is a schematic diagram of the side planar structure of the cleaning disc and the dust collecting disc in the present invention;

[0040] Fig.10The present invention Fig. 9 Schematic diagram of the three-dimensional separation structure of the cross section at CC;

[0041] Fig.11 The present invention Figure 2 Schematic diagram of the three-dimensional structure of the cross section at DD in the middle;

[0042] Fig.12 The present invention Fig.11 The enlarged structural diagram at E in the middle;

[0043] Fig.13 The present invention Fig.12 The enlarged structural diagram at F in the middle;

[0044] Fig.14 The present invention Figure 2 Schematic diagram of the planar structure of the section at DD;

[0045] Fig.15 The present invention Fig.11 Schematic diagram of the enlarged structure at G in the middle.

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 1. Hood; 2. Handle;

[0048] 3. Liquid spraying assembly; 301. Liquid spraying button; 302. Reciprocating rod; 303. Second spring; 304. Sealing piston; 305. Reset chamber; 306. Piston chamber; 307. Liquid guiding channel; 308. Water injection port; 309. Channel; 310. Water injection ring groove; 311. Injection port;

[0049] 4. Mounting cavity; 401. first step groove; 402. second step groove; 403. third step groove; 404. boss; 405. through groove;

[0050] 5. Cleaning disc; 501. Large ring disc body; 502. Slot; 503. First spring; 504. Pressure plate; 505. Cleaning cloth;

[0051] 6. Dust collecting disc; 601. Small ring disc; 602. Inner groove; 603. Outer cover; 604. Bracket; 605. Fan; 606. Filter; 607. Air outlet; 608. Intake hole; 609. Brush;

[0052] 7. Main gear; 9. Sub gear; 8. Driving motor. DETAILED DESCRIPTION

[0053] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0054] like Figure 1-Figure 4 As shown, a traffic light cleaning system and cleaning method include a hood 1, a handle 2 is provided on one side of the hood 1, a mounting cavity 4 is provided on the side of the hood 1 away from the handle 2, a cleaning disc 5 is provided inside the mounting cavity 4 and is offset from the axis of the hood 1, and a dust collecting disc 6 is provided inside the mounting cavity 4 and on the same side of the cleaning disc 5.

[0055] See attached Figure 5-Figure 6 The installation cavity 4 includes a first step groove 401, a second step groove 402 and a third step groove 403 which are progressively opened inside the hood 1. A main gear 7 is arranged in the middle of the first step groove 401. The inner ring wall of the second step groove 402 is evenly distributed with gear teeth to form an inner ring gear, and the inner ring gear in the second step groove 402 is meshed and connected with a sub-gear 9, and the sub-gear 9 is correspondingly arranged on the dust collecting disc 6. The sub-gear 9 is meshed and driven with the main gear 7. A protruding boss 404 is arranged in the installation cavity 4 and at the center of the third step groove 403. There is a gap between the third step groove 403 and the boss 404, forming a track groove for the sub-gear 9 to drive the dust collecting disc 6 to perform annular motion. A through groove 405 is opened on the third step groove 403. A driving motor 8 is fixed inside the installation cavity 4 and corresponding to the middle of the main gear 7;

[0056] The driving motor 8 rotates to drive the main gear 7 to drive the sub-gear 9 to rotate inside the installation cavity 4. The sub-gear 9 rotates along the motion track formed between the third-step groove 403 and the boss 404, and rotates around the cleaning disc 5 to form a planetary gear structure.

[0057] See attached Figure 7-Figure 8 The cleaning disc 5 includes a large ring disc body 501, a groove 502 is provided on one side of the large ring disc body 501 facing the opening of the installation cavity 4, a first spring 503 is fixed inside the groove 502, a pressure plate 504 is limitedly provided inside the groove 502, and a cleaning cloth 505 is also buckled on the side of the large ring disc body 501;

[0058] Furthermore, the end of the first spring 503 abuts the pressure plate 504, forcing the pressure plate 504 to bulge outward to press the cleaning cloth 505, so that the compressed side of the cleaning cloth 505 is raised. During use, the large ring disk 501 rotates to drive the cleaning cloth 505 to rotate and act on the lamp surface. The first spring 503 retracts under pressure, and the raised side of the cleaning cloth 505 remains in close contact with the lamp surface. At this time, the convex surface of the compressed side of the cleaning cloth 505 can be used as a pressing force point, so that the cleaning cloth 505 maintains at least one cleaning surface in contact with the lamp surface of the signal lamp, thereby ensuring the cleaning effect of the lamp surface and the cleaning cloth 505.

[0059] See attached Figure 6 and Fig. 9 The main gear 7 is fixed on the back side of the large ring disc body 501 , and the main gear 7 deviates from the center of the large ring disc body 501 and is arranged coaxially with the hood 1 .

[0060] Furthermore, due to the eccentric setting of the main gear 7 and the large ring disc 501, when the main gear 7 rotates, the large ring disc 501 rotates in the first-step groove 401 with the middle part of the main gear 7 to form a sector-shaped cleaning area. After the large ring disc 501 rotates one cycle with the main gear 7, a cleaning cycle of the current cleaning surface is completed. While the large ring disc 501 rotates to clean the surface, the handle is supported and wiped back and forth, so that the detergent can fully act on the lamp surface, which can speed up the cleaning rate of the lamp surface.

[0061] See attached Fig.10 The dust collecting disc 6 includes a small ring disc 601, and an inner groove 602 is provided on the side of the small ring disc 601 away from the opening of the installation cavity 4. An outer cover 603 is also installed on the side of the small ring disc 601 located on the inner groove 602. A bracket 604 is installed inside the outer cover 603. A fan 605 is fixed on one side of the bracket 604, and a filter 606 is installed on the other side of the bracket 604. The fan 605 is a negative pressure suction type, and an air outlet 607 is provided on the side of the filter 606 of the outer cover 603.

[0062] Furthermore, the fan 605 is of negative pressure suction type. When the small ring disc 601 rotates around the cleaning disc 5, the fan 605 uses negative pressure suction to suck air from the suction port and take away some floating dust, adding to the circulation of air flow, and immediately drying the clean area of ​​the large ring disc body 501 to prevent excessive water from hanging on the wall of the lamp surface, and also better avoid the problem of water stains and scratches on the lamp surface.

[0063] According to the above structure, since the sub-gear 9 is rotatably sleeved on the annular wall of the outer cover 603, when the main gear 7 and the large ring disk 501 move and rotate together, the sub-gear 9 meshing with the main gear 7 rotates around the main gear 7. Therefore, when the large ring disk 501 rotates, the small ring disk 601 rotates at its side. When the large ring disk 501 completes a cleaning cycle of the lower cleaning surface, the small ring disk 601 also completes the dust collection and drying of the lower cleaning surface, thereby achieving simultaneous cleaning, dust collection and drying, which can reduce the probability of detergent residue on the lamp surface due to failure to dry in time, thereby accelerating the aging of the lamp surface, and also improves the maintenance performance of the lamp surface through the pre-drying procedure.

[0064] See attached Fig.11 A spray assembly 3 is provided on the handle 2, and the spray assembly 3 includes a spray button 301 rotatably mounted on the handle 2, and a reciprocating rod 302 is provided at the end of the spray button 301. One end of the reciprocating rod 302 is spherical and rotatably arranged inside one end of the spray button 301, and the other end of the reciprocating rod 302 extends to the inside of the handle 2. A second spring 303 is provided on the ring side of the reciprocating rod 302, and a sealing piston 304 is connected to the extended end thereof.

[0065] See attached Figure 12-13 The handle 2 is provided with a reset cavity 305 and a piston cavity 306 corresponding to the second spring 303 and the sealing piston 304, respectively. The handle 2 is also provided with a liquid guide channel 307 connected to the piston cavity 306. The cavity of the liquid guide channel 307 is connected to the outside to form a water injection port 308. Fig.14 A water injection annular groove 310 is provided in the hood 1 corresponding to the second-step groove 402 , a liquid circulation channel 309 is provided between the piston cavity 306 and the water injection annular groove 310 , and a spray port 311 is provided at the bottom of the hood 1 corresponding to the water injection annular groove 310 .

[0066] The above structure can be implemented using the following steps:

[0067] Step 1: Turn off the signal light to cool down the light surface. During this time, connect a cleaning bucket with a water pump (with cleaning agent inside the cleaning bucket) to the water injection port 308;

[0068] Step 2: After the preparation work is completed, hold the handle 2 and wipe the signal light back and forth. During this process, press the liquid spray button 301 for the dirty position on the light surface, and the water pump pumps the cleaning agent to the surface of the light surface to dissolve and separate the dirt on the surface;

[0069] Step 3: After the cleaning liquid is sprayed onto the lamp surface, the driving motor 8 is started, and the driving motor 8 drives the cleaning disc 5 and the dust collecting disc 6 to reciprocate to clean the lamp surface, thereby achieving simultaneous cleaning, dust collecting and drying;

[0070] Step 4: After cleaning the lamp surface, turn off the power of the cleaning device and check the cleaning condition of the lamp surface.

[0071] According to the above structure, pressing the liquid spray button 301 drives the reciprocating rod 302 to rise, and the sealing piston 304 at the end of the reciprocating rod 302 moves up, opening the channel of the liquid guide channel 307, so that the water flow from the water injection port 308 passes through the channel 309 and the water injection ring groove 310 and is sprayed out from the injection port 311 to act on the lamp surface to be cleaned.

[0072] See attached Fig.15 A suction hole 608 is provided in the middle of one side of the small ring disk 601 which opens toward the installation cavity 4 , and a brush 609 is provided on the outer periphery of the suction hole 608 on this side of the small ring disk 601 .

[0073] Furthermore, the suction hole 608 is used to suck air and discharge it to the outside, and the brush 609 can wipe the clean area to assist workers in cleaning stubborn stains. The brush 609 creates a height between the bottom surface of the small ring disk 601 and the lamp surface, providing a better airflow suction space.

[0074] The working principle of the present invention is:

[0075] One end of the water pump inside the cleaning bucket draws the cleaning agent and injects it into the water injection port 308 through the other end;

[0076] By pressing the liquid spray button 301, the reciprocating rod 302 is lifted, and the sealing piston 304 at the end of the reciprocating rod 302 moves upward, opening the channel of the liquid guide channel 307, so that the water flow of the water injection port 308 passes through the channel 309 and the water injection ring groove 310 and is sprayed out from the injection port 311, so that the cleaning agent acts on the lamp surface to be cleaned;

[0077] Due to the eccentric setting of the main gear 7 and the large ring disc 501, when the main gear 7 rotates, the large ring disc 501 rotates in the middle of the main gear 7 in the first step groove 401 to form a sector-shaped cleaning area. After the large ring disc 501 rotates one cycle with the main gear 7, a cleaning cycle of the current cleaning surface is completed. Based on the above, while the large ring disc 501 rotates to clean the surface, the handle is supported and wiped back and forth, so that the detergent can fully act on the lamp surface, which can speed up the cleaning rate of the lamp surface. The fan 605 is a negative pressure suction type. When the small ring disc 601 rotates around the cleaning disc 5, the fan 605 is negatively attracted, sucking air from the suction port and taking away some floating dust, adding to the circulation of airflow, and immediately cleaning the cleaning area of ​​the large ring disc 501. The drying process prevents excessive water from hanging on the wall of the lamp surface, and also better avoids the problem of water stains and scratches on the lamp surface. Because the sub-gear 9 is rotatably sleeved on the annular wall of the outer cover 603, when the main gear 7 and the large ring disk 501 move and rotate together, the sub-gear 9 meshing with the main gear 7 rotates around the main gear 7. Therefore, when the large ring disk 501 rotates, the small ring disk 601 rotates at its side. When the large ring disk 501 completes a cleaning cycle of the lower cleaning surface, the small ring disk 601 also completes the dust collection and drying of the lower cleaning surface, which can reduce the probability of detergent residue on the lamp surface due to failure to dry in time, accelerating the aging of the lamp surface, and also improves the maintenance performance of the lamp surface through the pre-drying procedure.

[0078] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A traffic signal light cleaning system, comprising a hood (1), wherein a handle (2) is provided on one side of the hood (1), and wherein: The handle (2) is provided with a liquid spraying assembly (3); a mounting cavity (4) is provided on a side of the hood (1) facing away from the handle (2); a cleaning disc (5) is provided inside the mounting cavity (4) and is arranged offset from the axis of the hood (1); and a dust collecting disc (6) is provided inside the mounting cavity (4) and on the same side as the cleaning disc (5); The installation cavity (4) comprises a first step groove (401), a second step groove (402) and a third step groove (403) which are progressively opened inside the hood (1); a main gear (7) is arranged in the middle of the first step groove (401); gear teeth are evenly distributed on the inner ring wall of the second step groove (402) to form an inner ring gear; the inner ring gear in the second step groove (402) is meshedly connected with a sub-gear (9); the sub-gear (9) is correspondingly arranged on the dust collecting disc (6); and the sub-gear (9) is meshedly arranged with the main gear (7) for transmission; A protruding boss (404) is provided in the installation cavity (4) and at the center of the third-step groove (403); a gap is provided between the third-step groove (403) and the boss (404), forming a track groove for the secondary gear (9) to drive the dust collecting disc (6) to perform annular motion; a through groove (405) is provided on the third-step groove (403); A driving motor (8) is fixed inside the installation cavity (4) and corresponding to the middle of the main gear (7), and the driving motor (8) rotates to drive the main gear (7) to drive the auxiliary gear (9) to rotate inside the installation cavity (4), thereby forming a planetary gear structure; The cleaning disc (5) comprises a large ring disc body (501), a slot (502) is provided on a side of the large ring disc body (501) facing the opening of the installation cavity (4), a first spring (503) is fixed inside the slot (502), a pressure plate (504) is provided in the slot (502), and a cleaning cloth (505) is also buckled on the side of the large ring disc body (501); The end of the first spring (503) abuts against the pressure plate (504), forcing the pressure plate (504) to protrude outwards and press against the cleaning cloth (505), so that the pressure-bearing side of the cleaning cloth (505) bulges; The main gear (7) is fixed on the back side of the large ring disc body (501), and the main gear (7) is offset from the center of the large ring disc body (501) and is arranged coaxially with the hood (1).

2. A traffic signal light cleaning system according to claim 1, characterized in that: The dust collecting disc (6) comprises a small ring disc (601), an inner groove (602) is provided on a side of the small ring disc (601) facing away from the opening of the installation cavity (4), an outer cover (603) is also installed on a side of the small ring disc (601) located on the inner groove (602), a bracket (604) is installed inside the outer cover (603), a fan (605) is fixed on one side of the bracket (604), a filter (606) is installed on the other side of the bracket (604), and an air outlet (607) is provided on a side of the filter (606) of the outer cover (603); The fan (605) is of negative pressure suction type.

3. A traffic signal light cleaning system according to claim 2, characterized in that: The auxiliary gear (9) is rotatably sleeved on the annular wall of the outer cover (603).

4. A traffic signal light cleaning system according to claim 1, characterized in that: The liquid spraying assembly (3) comprises a liquid spraying button (301) rotatably mounted on the handle (2); a reciprocating rod (302) is arranged at the end of the liquid spraying button (301); one end of the reciprocating rod (302) is spherical and rotatably mounted inside one end of the liquid spraying button (301); the other end of the reciprocating rod (302) extends to the inside of the handle (2); a second spring (303) is sleeved on the annular side of the reciprocating rod (302); and a sealing piston (304) is connected to the extended end thereof.

5. A traffic signal light cleaning system according to claim 4, characterized in that: The handle (2) is provided with a reset cavity (305) and a piston cavity (306) corresponding to the second spring (303) and the sealing piston (304), respectively. The handle (2) is also provided with a liquid conducting channel (307) connected to the piston cavity (306). The cavity opening of the liquid conducting channel (307) is connected to the outside to form a water injection port (308). A water injection annular groove (310) is provided in the engine cover (1) corresponding to the second-stage groove (402); a liquid circulation channel (309) is provided between the piston cavity (306) and the water injection annular groove (310); and a spray port (311) is provided at the bottom of the engine cover (1) and corresponding to the water injection annular groove (310).

6. A traffic signal light cleaning system according to claim 2, characterized in that: A suction hole (608) is provided in the middle of one side of the small ring disk (601) that opens toward the installation cavity (4), and a brush (609) is provided on the side of the small ring disk (601) located outside the suction hole (608).

7. A traffic signal light cleaning method, for using the traffic signal light cleaning system according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Turn off the signal light to cool down the light surface. During this time, connect a cleaning bucket with a water pump to the water injection port (308); Step 2: After the preparation work is completed, hold the handle (2) and wipe the signal light back and forth. During this process, press the liquid spray button (301) at the dirty position on the light surface, and the water pump pumps the cleaning agent to the surface of the light surface to dissolve and separate the dirt on the surface; Step 3: After the cleaning liquid is sprayed onto the lamp surface, the driving motor (8) is started, and the driving motor (8) drives the cleaning disc (5) and the dust collecting disc (6) to reciprocate, thereby removing dirt from the lamp surface and achieving simultaneous cleaning, dust collection and drying; Step 4: After cleaning the lamp surface, turn off the power of the cleaning device and check the cleaning condition of the lamp surface.

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