Self-cleaning reflective signboard
By using a rotating duct dynamic jet cleaning method, the airflow drives the duct to rotate, achieving self-cleaning of the signboard. This solves the problem of dust accumulation on the signboard surface, reduces cleaning costs, and enables the reuse of the dust removal mechanism.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG TIANYE TRANSPORTATION FACILITIES ENG CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
Smart Images

Figure CN224531507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sign cleaning technology, specifically a self-cleaning reflective sign. Background Technology
[0002] Road construction refers to all engineering activities carried out during the construction or maintenance of urban and rural roads. These activities include, but are not limited to, road design, roadbed earthwork, pavement paving, drainage system construction, traffic sign and marking installation, and the construction of other related facilities. During road construction, signs (markers) need to be set up around the construction area to warn surrounding vehicles and pedestrians.
[0003] Road construction generates a large amount of dust, which accumulates and covers the sign surfaces after prolonged use, affecting their clarity and making it difficult to read the signs. Therefore, a self-cleaning reflective sign is proposed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a self-cleaning reflective sign that utilizes a dynamic air jet cleaning method with rotating ducts, effectively achieving self-cleaning of the sign. Furthermore, the self-rotation of the ducts is achieved through the airflow, eliminating the need for additional electrical components to drive the rotation and significantly reducing the cleaning cost of the sign.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning reflective sign, including a support rod and a sign installed on the support rod, wherein the sign has several sets of through holes, and a dust removal mechanism that rotates and blows air by air intake is installed in the through holes; The dust removal mechanism includes a connecting pipe with a through hole. The first end of the connecting pipe is connected to and rotatably installed with a rotating part. Several sets of air ducts are connected and installed at intervals along the edge of the rotating part. The air ducts are inclined and their air outlets are biased towards the signboard. The outer end of the connecting pipe is fixed with a connecting plate that is installed with the signboard. The top of the support rod is fixed with a loading seat, and the loading seat is equipped with an air supply mechanism that simultaneously delivers airflow to several sets of dust removal mechanisms.
[0006] Preferably, the air supply mechanism includes a blower installed in the loading seat, the blower's air inlet is connected to an air inlet pipe extending out of the loading seat, and its air outlet is connected to an air supply pipe extending out of the loading seat, with an air supply duct provided between the air supply pipe and several sets of connecting pipes.
[0007] Preferably, the air supply duct includes two sets of sleeves, with an intermediate pipe installed between the two sets of sleeves. The protruding parts of the intermediate pipe and the sleeves are fitted onto the corresponding connecting pipes, and the intermediate pipe is connected to the air supply duct.
[0008] Preferably, the rotating part is a rotating disk with a hollow cavity, and several sets of air ducts are distributed along the circumference of the rotating disk.
[0009] Preferably, the rotating part is a rotating rod, and several sets of air ducts are arranged on both sides of the outer end of the rotating rod, with the air outlet directions of the air ducts on both sides being opposite.
[0010] Preferably, the end of the connecting plate opposite to the rotating part has at least two sets of screw holes, and screws that pass through the sign are installed in the screw holes to fix the connecting plate to the end face of the sign.
[0011] Preferably, the end of the connecting disc facing away from the rotating part is coated with an adhesive layer to bond the connecting disc to the end face of the sign.
[0012] This utility model provides a self-cleaning reflective sign, which has the following advantages compared with the prior art: 1. This utility model injects airflow into each connecting pipe through an air delivery mechanism, thereby realizing a dynamic jet cleaning method for rotating air ducts, which can effectively achieve self-cleaning of signs; moreover, the self-rotation of air ducts is achieved by the blown airflow, eliminating the need for additional electrical components to drive the rotation, which can effectively reduce the cleaning cost of signs.
[0013] 2. This utility model connects the dust-sweeping mechanism to the signboard in a detachable installation manner. When the signboard needs to be replaced during construction, simply drill a hole in the new signboard to install the disassembled dust-sweeping mechanism on the new signboard. This allows for the reuse of the dust-sweeping mechanism and avoids waste. Attached Figure Description
[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the structure from another perspective of Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the ash removal mechanism and air conveying mechanism in Embodiment 1 of this utility model; Figure 4 This utility model Figure 3 Enlarged diagram of part A in the middle; Figure 5 This is a side view of the structure of Embodiment 1 of this utility model; Figure 6 This utility model Figure 5 Enlarged diagram of section B; Figure 7This is a schematic diagram of the air conveying mechanism in Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 9 This is a schematic diagram of the swivel structure in Embodiment 2 of this utility model.
[0015] In the diagram: 1-support rod, 2-dust removal mechanism, 3-air conveying mechanism, 4-loading seat, 5-signboard, 6-through hole, 7-screw hole, 8-screw; 21-Connecting pipe, 22-Connecting disc, 23a-Rotating disc, 23b-Rotating rod, 24-Air duct; 31-Sleeve, 32-Intermediate pipe, 33-Air supply pipe, 34-Blower, 35-Air inlet pipe. Detailed Implementation
[0016] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0017] Example 1
[0018] A self-cleaning reflective sign, such as Figures 1-7 As shown, it includes a support rod 1, with a mounting base fixed to the bottom of the support rod 1. The mounting base can be used to fix the self-cleaning reflective sign in a suitable position. A sign 5 is mounted on the support rod 1. The sign 5 has several sets of through holes 6, and a dust-sweeping mechanism 2, which rotates and blows air through the through holes 6, can be installed inside the through holes 6. The dust-sweeping mechanism 2 can periodically blow away dust from the sign's surface, effectively removing dust and other impurities, achieving self-cleaning of the sign. While ensuring the clarity of the signage, it eliminates the need for manual cleaning by staff, featuring simple operation and convenient cleaning.
[0019] Specifically, the dust removal mechanism 2 in this embodiment includes a connecting pipe 21 that passes through the through hole 6. The first end of the connecting pipe 21 is connected to and rotatably mounted with a rotating part. Several sets of air ducts 24 are connected and mounted at intervals along the edge of the rotating part (the rotating part is a rotating disk 23a with a hollow cavity, and the several sets of air ducts 24 are distributed along the circumference of the rotating disk 23a). The air ducts 24 are inclined, and their air outlets are biased towards the signboard 5, for reference. Figure 4 The outer end of the connecting pipe 21 is fixed with a connecting plate 22 that is installed with the sign 5. The end of the connecting plate 22 away from the rotating part has at least two sets of screw holes 7. The screw holes 7 are threaded with screws 8 that pass through the sign 5, thus fixing the connecting plate 22 to the end face of the sign 5.
[0020] During installation, the connecting pipe 21 can be inserted into the through hole 6 from the front end of the sign 5 until the connecting plate 22 contacts the front surface of the sign 5. Then, the screw 8 is used to pass through the rear end of the sign 5 and screwed into the screw hole 7. After tightening, the connecting plate 22 can be fixed on the sign 5. Repeating the above operation allows several sets of dust-sweeping mechanisms 2 to be installed on the sign 5 in advance, making installation and disassembly relatively convenient. By using a detachable installation method to connect the dust-sweeping mechanism to the sign 5, when the construction site needs to replace the sign 5, simply drill a hole in the new sign to install the disassembled dust-sweeping mechanism on the new sign, realizing the reuse of the dust-sweeping mechanism and avoiding waste.
[0021] In use, airflow is simultaneously injected into several sets of connecting pipes 21 through the air supply mechanism 3. The airflow enters the rotary disc 23a from the connecting pipes 21, and then the airflow is ejected from several sets of air ducts 24. Since the air ducts 24 are inclined, the rotary disc 23a can be driven to rotate rapidly under the force of the wind, so that the ejected airflow spreads and sweeps in all directions. Since the air outlet of the air duct 24 is facing the sign 5, it can be ensured that the blown airflow can come into contact with the dust on the surface of the sign 5, thereby cleaning the dust on the surface of the sign 5. This rotary dynamic jet blowing method can effectively achieve the self-cleaning of the sign 5. Moreover, the rotary disc 23a and its air ducts 24 are self-rotating by the blown airflow, eliminating the need for additional electrical components to drive the rotary disc 23a to rotate, which can effectively reduce costs.
[0022] In this embodiment, a loading seat 4 is fixed to the top of the support rod 1. The top cover of the loading seat 4 adopts a detachable installation structure, such as a threaded structure, to facilitate the installation of the blower 34. An air conveying mechanism 3 is installed on the loading seat 4 to simultaneously deliver airflow to several sets of dust removal mechanisms 2. The air conveying mechanism 3 includes a blower 34 installed in the loading seat 4. The air inlet of the blower 34 is connected to an air inlet pipe 35 extending out of the loading seat 4, and its air outlet is connected to an air conveying pipe 33 extending out of the loading seat 4. An air conveying duct is provided between the air conveying pipe 33 and several sets of connecting pipes 21. The air conveying duct can be installed on the rear end face of the sign 5.
[0023] When in use, start the blower 34, and outside air enters through the air inlet pipe 35, is injected into the air supply pipe 33, and then is distributed to each connecting pipe 21 through the air supply pipe.
[0024] The aforementioned air supply duct includes two sets of sleeves 31, with an intermediate pipe 32 connected between the two sets of sleeves 31. The protruding parts of the intermediate pipe 32 and the sleeves 31 are connected (the protruding parts are rubber hoses) to the corresponding connecting pipes 21, and the intermediate pipe 32 is connected to the air supply duct 33.
[0025] During installation, the sleeve 31 can be fitted onto the rear section of the connecting pipe 21, and the sleeve 31 can be locked onto the surface of the connecting pipe 21 using iron hoops or iron wire.
[0026] When in use, the airflow injected from the air supply pipe 33 will enter the intermediate pipe 32, and the airflow will enter the sleeves 31 on both sides through the split of the intermediate pipe 32, and then be split into each connecting pipe 21.
[0027] Example 2
[0028] Basically the same as in Example 1, such as Figures 8-9 As shown, the difference is that the rotating part is a rotating rod 23b, and several sets of air ducts 24 are arranged on both sides of the outer end of the rotating rod 23b, with the air outlet directions of the air ducts 24 on both sides being opposite.
[0029] When in use, the rotary rod 23b will rotate rapidly. Its rotation principle is the same as that of the rotary disk 23a. It can also realize a self-rotating dynamic air jet cleaning method, which can effectively achieve the self-cleaning of the sign 5.
[0030] Example 3
[0031] The invention is basically the same as in Example 1, except that the end of the connecting plate 22 facing away from the rotating part is coated with an adhesive layer, which is used to attach the connecting plate 22 to the end face of the sign 5.
[0032] During installation, apply adhesive to the end face of the connecting plate 22, and then insert the connecting tube 21 into the through hole 6 from the front end of the sign 5 until the connecting plate 22 contacts the front end face of the sign 5. After the adhesive has cured, the connecting plate 22 can be fixed to the sign 5.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A self-cleaning reflective sign, comprising a support rod (1) and a sign (5) mounted on the support rod (1), characterized in that: The signboard (5) has several sets of through holes (6), and a dust removal mechanism (2) that rotates and blows air by the air intake is installed in the through holes (6). The dust removal mechanism (2) includes a connecting pipe (21) that passes through the through hole (6). The first end of the connecting pipe (21) is connected to and rotatably installed with a rotating part. Several sets of air ducts (24) are connected and installed at intervals along the edge of the rotating part. The air ducts (24) are inclined and their air outlets are biased towards the signboard (5). The outer end of the connecting pipe (21) is fixed with a connecting plate (22) that is installed with the signboard (5). The top of the support rod (1) is fixed with a loading seat (4), and the loading seat (4) is equipped with an air supply mechanism (3) that simultaneously supplies airflow to several sets of dust removal mechanisms (2).
2. The self-cleaning reflective sign according to claim 1, characterized in that: The air supply mechanism (3) includes a blower (34) installed in the loading seat (4). The air inlet of the blower (34) is connected to an air inlet pipe (35) extending out of the loading seat (4), and its air outlet is connected to an air supply pipe (33) extending out of the loading seat (4). An air supply pipeline is provided between the air supply pipe (33) and several sets of connecting pipes (21).
3. The self-cleaning reflective sign according to claim 2, characterized in that: The air supply pipeline includes two sets of sleeves (31), and an intermediate pipe (32) is installed between the two sets of sleeves (31). The protruding parts of the intermediate pipe (32) and the sleeves (31) are sleeved on the corresponding connecting pipes (21), and the intermediate pipe (32) and the air supply pipe (33) are connected.
4. The self-cleaning reflective sign according to claim 1, characterized in that: The rotating part is a rotary disk (23a) with a hollow cavity, and several sets of air ducts (24) are distributed along the circumference of the rotary disk (23a).
5. The self-cleaning reflective sign according to claim 1, characterized in that: The rotating part is a swivel rod (23b), and several sets of air ducts (24) are arranged on both sides of the outer end of the swivel rod (23b), with the air outlet directions of the two air ducts (24) being opposite.
6. The self-cleaning reflective sign according to claim 1, characterized in that: The connecting plate (22) has at least two sets of screw holes (7) at the end opposite to the rotating part. The screw holes (7) are threaded with screws (8) that pass through the signboard (5) to fix the connecting plate (22) to the end face of the signboard (5).
7. The self-cleaning reflective sign according to claim 1, characterized in that: The end of the connecting disc (22) facing away from the rotating part is coated with an adhesive layer, and the connecting disc (22) is bonded to the end face of the sign (5).