A modular, expandable, and upgradeable traffic signal light

Abstract

This application discloses a modular, expandable, and upgradeable traffic signal light, including a housing unit, a top cover unit, a lifting frame, a first electric winding unit, and a display unit mounted on the lifting frame. A first pull rope connects the first electric winding unit and the lifting frame. The housing unit includes a back plate, a front panel, and two side plates. The front panel has a first rectangular through hole and a second rectangular through hole. A light-transmitting plate is installed in the first rectangular through hole, and a side cover plate is installed in the second rectangular through hole. The lifting frame has multiple first mounting positions. This traffic signal light achieves modular installation, enabling rapid upgrades and quick replacement and addition of the display unit. It also has good heat dissipation performance, combining heat dissipation with the light-transmitting plate for even better heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of traffic signal technology, and more specifically, to a modular, expandable, and upgradeable traffic signal. Background Technology

[0002] Traffic lights are an indispensable infrastructure for modern road traffic. They are typically installed at key locations such as road intersections and pedestrian crossings. Through clear light instructions, traffic lights regulate traffic flow and effectively reduce the risk of road conflicts.

[0003] Existing traffic lights typically have fixed modules that are difficult to upgrade or require significant manpower for upgrades. Partial replacements or additions are often not feasible, sometimes necessitating the replacement of the entire traffic light, resulting in a waste of social resources. For example, traffic lights with display screens are often custom-made initially, making it difficult to add screens later, or requiring external displays, leading to insufficient integration and an unsightly appearance. Sometimes, to achieve clear visibility, high-brightness, high-power lights or displays are used. The high power of these lights or displays generates considerable heat, which accumulates inside the traffic light and is difficult to dissipate. Poor heat dissipation can easily cause the internal temperature of the traffic light to rise, shortening its lifespan. Simple air-cooling with external circulation can easily allow external contaminants or even moisture to enter the traffic light, also negatively impacting its lifespan. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a modular, expandable and upgradeable traffic signal light.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a traffic signal light, comprising a housing unit, a top cover unit, a lifting frame, a first electric winding unit, and a display unit installed on the lifting frame; a first pull rope connects the first electric winding unit and the lifting frame; the housing unit includes a back plate, a front panel, and two side plates, the front panel having a first rectangular through hole and a second rectangular through hole, a light-transmitting plate being installed at the first rectangular through hole, and a side cover plate being installed at the second rectangular through hole; the lifting frame having multiple first mounting positions, each mounting position having an electrical connection plug unit and a horizontal guide rod, a clamping plate being fixed at the electrical connection plug unit, and a spring connecting the clamping plate and the back plate; the display unit having a horizontal insertion hole, an electrical connection slot, and multiple rollers.

[0006] Furthermore, the top cover unit is fixed to the top of the outer shell unit.

[0007] Furthermore, the lifting frame is installed inside the outer casing unit.

[0008] Furthermore, the first electric winding unit is fixed to the top cover unit.

[0009] Furthermore, the horizontal insertion hole mates with the horizontal guide rod.

[0010] Furthermore, the electrical connection slot mates with the electrical connection plug unit.

[0011] Furthermore, the roller can abut against the inside of the panel.

[0012] Furthermore, the abutment plate can abut against the display unit.

[0013] Furthermore, the lifting frame can be lowered to face the second rectangular through hole, which can be used to remove the display unit.

[0014] Therefore, the old display unit can be removed or a new display unit can be installed through the second rectangular through hole.

[0015] Furthermore, the inner surface of the side cover is flush with the inner surface of the panel.

[0016] Furthermore, the display unit is a countdown display unit, an indicator light display unit, or a display screen unit.

[0017] Furthermore, both side plates have vertical slide rails, and both sides of the lifting frame have vertical slide grooves that cooperate with the slide rails.

[0018] This makes the lifting operation of the lifting frame more stable.

[0019] Furthermore, the housing of the display unit has strip-shaped heat dissipation grooves.

[0020] This allows heat from inside the display unit to be transferred to the outside of the display unit more quickly.

[0021] Furthermore, both the countdown display unit and the indicator light display unit have two horizontal sockets, and the display screen unit has four horizontal sockets.

[0022] Furthermore, each first mounting position has two horizontal guide rods.

[0023] Furthermore, four springs are connected between the abutment plate and the back plate.

[0024] Furthermore, a second electric winding unit is installed inside the outer casing unit, and a second pull rope is connected between the second electric winding unit and the lifting frame.

[0025] Thus, the first electric winding unit and the second electric winding unit can drive the lifting frame from both the top and bottom directions, and the first and second pull ropes are tightened, thereby making the position of the lifting frame more stable.

[0026] Furthermore, the lifting frame includes a first plate and two second plates perpendicular to the first plate. The sliding groove is located at the second plate. The top of the first plate has a first semi-circular ring fixed to the end of the first pull rope, and the bottom has a second semi-circular ring fixed to the end of the second pull rope.

[0027] Furthermore, the lifting frame is equipped with at least one countdown display unit, one indicator light display unit, and one display screen unit.

[0028] Furthermore, a control box and a first liquid storage tank are installed at the top cover unit, and the first liquid storage tank has multiple heat dissipation fins; a second liquid storage tank is installed inside the outer shell unit; the light-transmitting plate has an inner cavity, and a strip-shaped lifting piston is installed in the inner cavity to divide the inner cavity into an upper chamber and a lower chamber; the light-transmitting plate has a first port communicating with the upper chamber and a second port communicating with the lower chamber; a first connecting pipe is connected between the first liquid storage tank and the first port; a first liquid pump and a first valve are installed at the first connecting pipe; and a second liquid pump and a first valve are connected between the second liquid storage tank and the second port. Two connecting pipes are used, with a second liquid pump and a second valve installed at the second connecting pipe; a first pipe section communicating with the upper chamber is fixed at the strip-shaped lifting piston, and a second pipe section is fixed at the bottom of the light-transmitting plate; a flexible pipe located in the lower chamber connects the first and second pipe sections; a third connecting pipe connects the second pipe section and the first liquid storage tank; a third valve is installed at the third connecting pipe; the upper chamber is filled with transparent liquid, and the lower chamber is filled with opaque liquid; a fan unit is installed inside the outer shell unit, and the fan unit is located above the first rectangular through hole.

[0029] Furthermore, the first connecting pipe is divided into a first part connecting the first liquid storage tank and the first liquid pump, and a second part connecting the first liquid pump and the first pipe opening, with the first valve located in the first part.

[0030] Furthermore, the second connecting pipe is divided into a third part that connects the second liquid storage tank and the second liquid pump, and a fourth part that connects the second liquid pump and the second pipe opening. The second valve is located in the third part.

[0031] Furthermore, multiple temperature sensors are installed on the lifting frame.

[0032] This allows for the detection of temperature at multiple points on the lifting frame, and based on the temperature, it can be determined whether or not to use the first liquid pump to achieve cooling circulation of the transparent liquid.

[0033] Furthermore, the control box is equipped with a control unit and a wireless communication unit.

[0034] Furthermore, the control box is located below the top cover unit.

[0035] Furthermore, the first liquid storage tank is located above the top cover unit.

[0036] Furthermore, the second liquid storage tank is located below the second rectangular through hole.

[0037] Furthermore, the flexible tube is the same color as the opaque liquid.

[0038] As a result, the flexible tube is obscured by the opaque liquid in the lower chamber and is not easily seen.

[0039] Furthermore, a limit block is fixed to the top of the slide rail; the cooling fan is fixedly connected to the two limit blocks.

[0040] Furthermore, the first tube passes through the strip-shaped lifting piston, and the first tube is a straight tube and a rigid tube.

[0041] Furthermore, the second tube is a rigid tube and is L-shaped.

[0042] Furthermore, the side cover plate and the panel are fixed together by bolts; a rectangular frame portion that can be inserted into the top of the outer shell unit is fixed at the top cover unit, and the outer shell unit has locking bolts that can lock the outer shell unit and the rectangular frame portion in place.

[0043] Furthermore, a rectangular frame-shaped sealing gasket capable of abutting the top of the outer casing unit is installed at the top cover unit.

[0044] This allows the top cover unit to seal the outer casing unit from the top.

[0045] Furthermore, a bottom flange is fixed to the bottom of the outer casing unit.

[0046] Furthermore, the first liquid storage tank is fixed to the top cover unit and located above the top cover unit.

[0047] Furthermore, the first liquid pump is fixed to the top cover unit and located below the top cover unit.

[0048] Furthermore, the first electric winding unit is fixed to the top cover unit and located below the top cover unit.

[0049] Furthermore, the second liquid storage tank is fixed to the back plate, and the second liquid pump is fixed to the second liquid storage tank.

[0050] Furthermore, the second electric winding unit is fixed to the back plate.

[0051] Furthermore, both the countdown display unit and the indicator light display unit have inverted U-shaped grooves, and multiple first magnetic blocks are fixed inside the inverted U-shaped grooves.

[0052] Furthermore, the light-transmitting plate has multiple second mounting positions, each with multiple insertion protrusions, and each insertion protrusion is fixed with a cylindrical elastic sleeve.

[0053] Furthermore, a sunshade unit is installed at the second mounting position corresponding to the countdown display unit or indicator light display unit.

[0054] Furthermore, the sunshade unit includes an inner sunshade, an outer sunshade, an inverted U-shaped connecting plate connecting the inner sunshade and the outer sunshade, and a plurality of connecting fins connecting the inner sunshade and the outer sunshade. The inverted U-shaped connecting plate has an insertion hole that mates with the insertion protrusion.

[0055] Furthermore, the inverted U-shaped connecting plate has a groove, and a second magnetic block that can attract the first magnetic block is fixed in the groove.

[0056] This allows for quick installation of the sunshade unit, secured by the elastic sleeve and magnetic blocks.

[0057] In some embodiments, the inverted U-shaped connecting plate also has a locking bolt that locks the inverted U-shaped connecting plate to the insertion protrusion position.

[0058] Furthermore, the inner sun visor, the inverted U-shaped connecting plate, and the multiple connecting fins are all made of metal. Furthermore, the outer sun visor is made of plastic.

[0059] Therefore, the inner sun shade and connecting fins can function as heat dissipation fins. The outer sun shade is made of plastic and can block the heat generated by direct sunlight.

[0060] In some embodiments, particularly in areas with low sunlight, the external sunshade can also be made of metal, thus serving as a heat dissipation fin.

[0061] Furthermore, the outer surface of the outer sunshade has a reflective coating for reflecting solar light.

[0062] Furthermore, a thermal pad is fixed at the inverted U-shaped connecting plate.

[0063] Furthermore, the inverted U-shaped groove contains three first magnetic blocks.

[0064] Furthermore, the U-shaped connecting plate has three grooves, each groove containing a second magnetic block.

[0065] Furthermore, the number of the first mounting positions is equal to the number of the second mounting positions, and the two correspond one-to-one.

[0066] Beneficial effects:

[0067] 1. The traffic signal light of this application is modularly installed, which allows for rapid upgrades and enables quick replacement and addition of display units.

[0068] The traffic signal light of this application has a good heat dissipation effect, and combines the heat dissipation function with the light-transmitting plate to achieve better heat dissipation. Attached Figure Description

[0069] Figure 1 This is a diagram of a traffic signal light.

[0070] Figure 2 A schematic diagram showing the separation of the light-transmitting panel and side cover from the outer casing unit;

[0071] Figure 3 This is a magnified view of region A;

[0072] Figure 4 This is a magnified view of region B.

[0073] Figure 5 This is a schematic diagram showing the lifting frame descending to the second rectangular through hole;

[0074] Figure 6 This is a magnified view of region C;

[0075] Figure 7 This is a magnified view of region D;

[0076] Figure 8 This is a first-person perspective diagram of component separation.

[0077] Figure 9 This is a magnified view of region E.

[0078] Figure 10 This is a magnified view of region F;

[0079] Figure 11 This is a magnified view of region G;

[0080] Figure 12 This is a magnified view of region H;

[0081] Figure 13 This is a magnified view of region I;

[0082] Figure 14 This is a second-view diagram illustrating the separation of components.

[0083] Figure 15 This is a magnified view of region J.

[0084] Figure 16 A magnified view of region K;

[0085] Figure 17 A first-person view diagram of the interior of a traffic signal light;

[0086] Figure 18 A second-view diagram of the inside of a traffic signal light;

[0087] Figure 19 This is a magnified view of region L;

[0088] Figure 20 This is a magnified view of region M.

[0089] Figure 21 A third-person perspective diagram of the inside of a traffic signal light;

[0090] Figure 22 This is a magnified view of region N;

[0091] Figure 23 This is a schematic diagram of the interior of the light-transmitting panel.

[0092] To make it clear, Figures 17-21 One of the side panels of the inner shell unit is hidden; Figure 23 The central light-transmitting panel is cut open to reveal the interior.

[0093] Explanation of reference numerals in the attached drawings: Outer shell unit 1; Back plate 1.1; Front panel 1.2; Side plate 1.3; Light-transmitting plate 1.4; First pipe opening 1.4.1; Second pipe opening 1.4.2; Second pipe section 1.4.3; Side cover plate 1.5; Slide rail 1.6; Limiting block 1.6.1; Second electric winding unit 1.7; Locking bolt 1.8; Top cover unit 2; First electric winding unit 2.1; Rectangular frame section 2.2; Lifting frame 3; Electrical connection plug unit 3.1; Clamping plate 3.2; Spring 3.3; Horizontal guide rod 3.4; Slide groove 3.5; First plate body 3.6; Second plate body 3.7; First semi-circular ring 3.8; Second semi-circular ring 3.9; Horizontal socket 4.1; Electrical connection slot 4.2; Roller 4.3; Countdown timer Display unit 4.4; Indicator light display unit 4.5; Display screen unit 4.6; Strip-shaped heat dissipation groove 4.7; Inverted U-shaped groove 4.8; First magnetic block 4.9; Control box 5; First liquid storage tank 6; Heat dissipation fins 6.1; First connecting pipe 6.2; First liquid pump 6.3; First valve 6.4; Third connecting pipe 6.5; Third valve 6.6; Second liquid storage tank 7; Second connecting pipe 7.1; Second liquid pump 7.2; Second valve 7.3; Strip-shaped lifting piston 8; First pipe section 8.1; Fan unit 9; Insertion protrusion 10; Elastic sleeve 10.1; Inner sunshade 11.1; Outer sunshade 11.2; Inverted U-shaped connecting plate 11.3; Connecting fins 11.4; Insertion hole 11.5; Second magnetic block 11.6. Detailed Implementation

[0094] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0095] This invention provides a modular, expandable, and upgradeable traffic signal light, as shown in the figure, comprising a housing unit 1, a top cover unit 2 fixed to the top of the housing unit 1, a lifting frame 3 installed inside the housing unit 1, a first electric winding unit 2.1 fixed to the top cover unit 2, and a display unit installed on the lifting frame 3; a first pull rope (not shown in the figure) connects the first electric winding unit 2.1 and the lifting frame 3; the housing unit 1 includes a back plate 1.1, a front panel 1.2, and two side plates 1.3, the front panel 1.2 having a first rectangular through hole and a second rectangular through hole, wherein a display unit is installed at the first rectangular through hole. The device includes a light-transmitting plate 1.4, a side cover plate 1.5 installed at the second rectangular through-hole, and a lifting frame 3 with multiple first mounting positions. Each mounting position has an electrical connector plug unit 3.1 and a horizontal guide rod 3.4. A clamping plate 3.2 is fixed to the electrical connector plug unit 3.1, and a spring 3.3 connects the clamping plate 3.2 to the back plate 1.1. The display unit has a horizontal insertion hole 4.1 that mates with the horizontal guide rod 3.4, an electrical connector slot 4.2 that mates with the electrical connector plug unit 3.1, and multiple rollers 4.3 that can abut against the inner side of the panel 1.2. The clamping plate 3.2 can abut against the display unit. The display unit is a countdown display unit 4.4, an indicator light display unit 4.5, or a display screen unit 4.6. Both side plates 1.3 have vertical slide rails 1.6, and both sides of the lifting frame 3 have vertical slide grooves 3.5 that mate with the slide rails 1.6; the outer shell of the display unit has strip-shaped heat dissipation grooves 4.7; the countdown display unit 4.4 and the indicator light display unit 4.5 each have two horizontal insertion holes 4.1, and the display screen unit 4.6 has four horizontal insertion holes 4.1; each first mounting position has two horizontal guide rods 3.4; four springs 3.3 are connected between the clamping plate 3.2 and the back plate 1.1. The outer casing unit 1 houses a second electric winding unit 1.7, and a second pull rope (not shown in the figure) connects the second electric winding unit 1.7 and the lifting frame 3. The lifting frame 3 includes a first plate 3.6 and two second plates 3.7 perpendicular to the first plate 3.6. The slide groove 3.5 is located at the second plate 3.7. The top of the first plate 3.6 has a first semi-circular ring 3.8 fixed to the end of the first pull rope, and the bottom has a second semi-circular ring 3.9 fixed to the end of the second pull rope. The lifting frame 3 houses at least one countdown display unit 4.4, one indicator light display unit 4.5, and one display screen unit 4.6.

[0096] The top cover unit 2 is equipped with a control box 5 located below the top cover unit 2 and a first liquid storage tank 6 located above the top cover unit 2. The first liquid storage tank 6 has multiple heat dissipation fins 6.1. The outer shell unit 1 is equipped with a second liquid storage tank 7 located below the second rectangular through hole. The light-transmitting plate 1.4 has an inner cavity, in which a strip-shaped lifting piston 8 is installed to divide the inner cavity into an upper chamber and a lower chamber. The light-transmitting plate 1.4 has a first port 1.4.1 communicating with the upper chamber and a second port 1.4.2 communicating with the lower chamber. A first connecting pipe 6.2 (only a part of the first connecting pipe is shown in the figure) connects the first liquid storage tank 6 and the first port 1.4.1. A first liquid pump 6.3 and a first valve 6.4 are installed on the first connecting pipe 6.2. A second connecting pipe 6.4 connects the second liquid storage tank 7 and the second port 1.4.2. The second connecting pipe 7.1 (only a part of the second connecting pipe is shown in the figure) is connected to the second connecting pipe 7.1, where a second liquid pump 7.2 and a second valve 7.3 are installed. The strip-shaped lifting piston 8 is fixed with a first pipe section 8.1 communicating with the upper chamber. The bottom end of the light-transmitting plate 1.4 is also fixed with a second pipe section 1.4.3. A flexible pipe (not shown in the figure) located in the lower chamber is connected between the first pipe section 8.1 and the second pipe section 1.4.3. A third connecting pipe 6.5 is connected between the second pipe section 1.4.3 and the first liquid storage tank 6. A third valve 6.6 is installed at the third connecting pipe 6.5. The upper chamber is filled with transparent liquid, and the lower chamber is filled with opaque liquid. A fan unit 9 is installed inside the outer shell unit 1. The fan unit 9 is located above the first rectangular through hole. Multiple temperature sensors are installed at the lifting frame 3. The first tube 8.1 passes through the strip-shaped lifting piston 8. The first tube 8.1 is a straight and rigid tube. The second tube 1.4.3 is a rigid tube and is L-shaped. The side cover plate 1.5 and the front panel 1.2 are fixed together by bolts. A rectangular frame 2.2 that can be inserted into the top of the outer shell unit 1 is fixed at the top cover unit 2. The outer shell unit 1 has a locking bolt 1.8 that can lock the outer shell unit 1 and the rectangular frame 2.2 in place. A rectangular frame-shaped sealing gasket that can abut against the top of the outer shell unit 1 is installed at the top cover unit 2. The bottom flange is fixed to the bottom of the outer casing unit 1; the first liquid storage tank 6 is fixed to the top cover unit 2 and located above the top cover unit 2; the first liquid pump 6.3 is fixed to the top cover unit 2 and located below the top cover unit 2; the first electric winding unit 2.1 is fixed to the top cover unit 2 and located below the top cover unit 2; the second liquid storage tank 7 is fixed to the back plate 1.1; the second liquid pump 7.2 is fixed to the second liquid storage tank 7; and the second electric winding unit 1.7 is fixed to the back plate 1.1.Both the countdown display unit 4.4 and the indicator light display unit 4.5 have inverted U-shaped grooves 4.8, and multiple first magnetic blocks 4.9 are fixed inside the inverted U-shaped grooves 4.8; the light-transmitting plate 1.4 has multiple second mounting positions, and each second mounting position has multiple insertion protrusions 10, with a cylindrical elastic sleeve 10.1 fixed to each insertion protrusion 10; a sunshade unit is installed at the second mounting position corresponding to either the countdown display unit 4.4 or the indicator light display unit 4.5. It includes an inner sun visor 11.1, an outer sun visor 11.2, an inverted U-shaped connecting plate 11.3 connecting the inner sun visor 11.1 and the outer sun visor 11.2, and a plurality of connecting fins 11.4 connecting the inner sun visor 11.1 and the outer sun visor 11.2. The inverted U-shaped connecting plate 11.3 has an insertion hole 11.5 that mates with the insertion protrusion 10. The inverted U-shaped connecting plate 11.3 has a groove, and a second magnet 11.6 that can attract the first magnet 4.9 is fixed in the groove.

[0097] Working Principle: In this traffic light, the display unit is installed within a lifting frame. Driven by a first and second electric winding unit, the lifting frame can rise and fall. When the lifting frame descends to the second rectangular through-hole, the display unit can be installed through this hole. After installation, the lifting frame can rise, raising the display unit to a suitable height. The display unit can be connected via an electrical connection slot and an electrical connection plug unit for power supply and data transmission. Furthermore, a retaining plate holds the display unit in place, causing the rollers to abut against the inner side of the panel, thus facilitating easy vertical movement of the display unit and ensuring stable installation.

[0098] Furthermore, depending on the number of display units installed (e.g., five mounting positions), when only the top two positions have display units installed, the first liquid pump can pump and extract liquid to adjust the height of the strip-shaped lifting piston. This positions the piston between the second and third mounting positions from the top, filling the upper chambers of the top two positions with transparent liquid, allowing the light-transmitting panel to display the two display units. The lower chambers of the remaining mounting positions without display units are filled with opaque liquid (e.g., black or brown liquid; the liquid color can be chosen to match the color of the signal light housing for a more aesthetically pleasing overall look). This opaque liquid covers the mounting positions without display units, making the signal light more visually appealing. Specifically, when driving the bar-shaped lifting piston to move up and down, the third valve can be closed, and the first valve, the second valve, the first liquid pump, and the second liquid pump can be opened. This allows transparent liquid to be continuously injected into the upper chamber, while the opaque liquid in the lower chamber is recovered. As a result, the position of the bar-shaped lifting piston can be lowered. After the position of the bar-shaped lifting piston is adjusted, the second liquid pump and the second valve can be closed.

[0099] Furthermore, when the installed display units use higher-power LEDs for better display effects but also generate more heat, the fan unit can be activated to create airflow circulation. This airflow passes through the first space between the light-transmitting plate and multiple display units, and then through the second space between the second plate and multiple display units, circulating between the first and second spaces. This airflow carries heat to the light-transmitting plate, particularly to the area containing the upper chamber. Since the light-transmitting plate is exposed, it has better heat dissipation characteristics, thus achieving heat dissipation for the multiple display units. The sunshade unit, in contact with the light-transmitting plate, can also conduct heat, further enhancing the heat dissipation effect. Moreover, when further heat dissipation is needed based on temperature sensor readings, a first liquid pump can circulate liquid between the upper chamber and the first liquid reservoir. The first liquid reservoir has multiple heat dissipation fins, further enhancing the heat dissipation effect. By connecting the first and second pipe sections with a flexible tube, the transparent liquid can circulate between the upper chamber and the first reservoir regardless of the height of the strip-shaped lifting piston, thereby enhancing the cooling effect of the transparent liquid circulation. Specifically, during circulation, the second valve can be closed, and the first liquid pump, the first valve, and the third valve can be opened to achieve liquid circulation between the upper chamber and the first reservoir, but the position of the strip-shaped lifting piston will not change.

[0100] Therefore, the traffic signal light of this application can realize the rapid replacement and addition of display units, and can achieve better display for built-in display units. It can also block the installation position where no display unit is installed, and can use the light-transmitting plate to dissipate heat from the display unit. Moreover, the heat dissipation airflow only circulates inside the outer shell unit, thereby preventing moisture, dust and other contaminants from entering the traffic signal light and helping to increase the lifespan of the traffic signal light.

[0101] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A modular, expandable, and upgradeable traffic signal light, characterized in that, The device includes a housing unit, a top cover unit, a lifting frame, a first electric winding unit, and a display unit mounted on the lifting frame. A first pull rope connects the first electric winding unit and the lifting frame. The housing unit includes a back plate, a front panel, and two side plates. The front panel has a first rectangular through hole and a second rectangular through hole. A light-transmitting plate is installed in the first rectangular through hole, and a side cover plate is installed in the second rectangular through hole. The lifting frame has multiple first mounting positions. Each mounting position has an electrical connection plug unit and a horizontal guide rod. A clamping plate is fixed to the electrical connection plug unit. A spring connects the clamping plate to the back plate. The display unit has a horizontal insertion hole, an electrical connection slot, and multiple rollers. The top cover unit is equipped with a control box and a first liquid storage tank, which has multiple heat dissipation fins. The outer shell unit houses a second liquid storage tank. The light-transmitting plate has an inner cavity, within which a strip-shaped lifting piston divides the cavity into an upper chamber and a lower chamber. The light-transmitting plate has a first port communicating with the upper chamber and a second port communicating with the lower chamber. A first connecting pipe connects the first liquid storage tank and the first port, and a first liquid pump and a first valve are installed on the first connecting pipe. A second connecting pipe connects the second liquid storage tank and the second port. A second liquid pump and a second valve are installed; a first pipe section communicating with the upper chamber is fixed at the strip-shaped lifting piston, and a second pipe section is fixed at the bottom end of the light-transmitting plate; a flexible pipe located in the lower chamber connects the first and second pipe sections; a third connecting pipe connects the second pipe section and the first liquid storage tank; a third valve is installed at the third connecting pipe; the upper chamber is filled with transparent liquid, and the lower chamber is filled with opaque liquid; a fan unit is installed inside the outer shell unit, and the fan unit is located above the first rectangular through hole; multiple temperature sensors are installed at the lifting frame.

2. The modular, expandable, and upgradeable traffic signal light according to claim 1, characterized in that, The display unit is a countdown display unit, an indicator light display unit, or a display screen unit.

3. The modular, expandable, and upgradeable traffic signal light according to claim 2, characterized in that, Both side panels have vertical slide rails, and both sides of the lifting frame have vertical slide grooves that mate with the slide rails; the outer shell of the display unit has strip-shaped heat dissipation slots; the countdown display unit and the indicator light display unit each have two horizontal sockets, and the display screen unit has four horizontal sockets; each first mounting position has two horizontal guide rods; and four springs connect the clamping plate and the back plate.

4. The modular, expandable, and upgradeable traffic signal light according to claim 3, characterized in that, The outer casing unit is equipped with a second electric winding unit, and a second pull rope is connected between the second electric winding unit and the lifting frame; the lifting frame includes a first plate and two second plates perpendicular to the first plate, the slide groove is located at the second plate, the top of the first plate has a first semi-circular ring fixed to the end of the first pull rope, and the bottom has a second semi-circular ring fixed to the end of the second pull rope.

5. The modular, expandable, and upgradeable traffic signal light according to claim 2, characterized in that, The lifting frame is equipped with at least one countdown display unit, one indicator light display unit, and one display screen unit.

6. The modular, expandable, and upgradeable traffic signal light according to claim 1, characterized in that, The first tube passes through the strip-shaped lifting piston; the first tube is a straight and rigid tube; the second tube is a rigid tube and is L-shaped.

7. The modular, expandable, and upgradeable traffic signal light according to claim 1, characterized in that, The side cover and the panel are fixed together by bolts; a rectangular frame portion that can be inserted into the top of the outer shell unit is fixed at the top cover unit, and the outer shell unit has locking bolts that can lock the position of the outer shell unit and the rectangular frame portion; a rectangular frame-shaped sealing gasket that can abut against the top of the outer shell unit is installed at the top cover unit.

8. The modular, expandable, and upgradeable traffic signal light according to claim 4, characterized in that, The bottom flange is fixed to the bottom of the outer shell unit; the first liquid storage tank is fixed to the top cover unit and located above the top cover unit; the first liquid pump is fixed to the top cover unit and located below the top cover unit; the first electric winding unit is fixed to the top cover unit and located below the top cover unit; the second liquid storage tank is fixed to the back plate; the second liquid pump is fixed to the second liquid storage tank; and the second electric winding unit is fixed to the back plate.

9. The modular, expandable, and upgradeable traffic signal light according to claim 2, characterized in that, Both the countdown display unit and the indicator light display unit have inverted U-shaped grooves, and multiple first magnetic blocks are fixed inside the inverted U-shaped grooves; the light-transmitting plate has multiple second mounting positions, and each second mounting position has multiple insertion protrusions, with a cylindrical elastic sleeve fixed to each insertion protrusion; a sunshade unit is installed at the second mounting position corresponding to the countdown display unit or the indicator light display unit, the sunshade unit includes an inner sunshade plate, an outer sunshade plate, an inverted U-shaped connecting plate connecting the inner and outer sunshades, and multiple connecting fins connecting the inner and outer sunshades, the inverted U-shaped connecting plate has an insertion hole that mates with the insertion protrusions; the inverted U-shaped connecting plate has a groove, and a second magnetic block that can attract the first magnetic blocks is fixed inside the groove.

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