Full opening platform door threshold indicating light
By designing the installation frame and ejection mechanism for the fully open platform door threshold indicator lights, the problem of complex and time-consuming replacement and maintenance in the existing technology has been solved, achieving the effects of simplifying the process, extending service life and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU RAIL TRANSIT CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-09
AI Technical Summary
The existing fully open platform door threshold indicator lights require the removal of the threshold cover plate during replacement and maintenance, which involves multiple bolts. The process is complex and time-consuming, and the LED beads are easily damaged by moisture and dust. The driver module has poor heat dissipation and a high failure rate, resulting in high maintenance costs.
An installation mechanism was designed, comprising a mounting frame, a protective plate, a sealing ring, a rotating column, a torsion spring, a stop block, and a heat dissipation mesh. The protective plate is opened by simply rotating the rotating column, and the LED light strip is automatically ejected by the ejection mechanism, simplifying the replacement process. The sealing ring prevents dust and moisture from entering, and the heat dissipation mesh dissipates heat, protecting the LED light strip from environmental influences.
It simplifies the replacement and maintenance process, improves work efficiency, extends the lifespan of LED light strips, reduces maintenance costs, and ensures the stable operation of light strips.
Smart Images

Figure CN224338125U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of indicator light technology, specifically relating to an indicator light for a fully open platform door threshold. Background Technology
[0002] "Fully open platform screen doors" is a critical operating state for platform screen doors (PSD) in rail transit systems. It refers to all sliding doors, emergency doors, and end doors in the system being fully open and locked, typically used for passenger boarding and alighting, equipment maintenance, or emergency evacuation. Platform screen door sill indicator lights are important safety auxiliary devices in rail transit platform screen door systems. They are usually installed on or below the edge of the platform screen door sill to provide clear visual cues to passengers and staff when the door is fully open, preventing accidents such as falls and injuries.
[0003] In existing technologies, indicator lights are usually fixed inside the threshold with screws or clips. In actual use, the platform threshold area is subjected to long-term footing by passengers and scratches by luggage, and is exposed to a humid and dusty environment, which affects the lighting effect. In addition, LED beads are prone to burnout due to frequent switching or voltage fluctuations, and the failure rate of the driver module increases due to poor heat dissipation. Frequent and rapid inspection and replacement are required. When replacing and inspecting, the threshold cover plate must be removed first. The process involves multiple bolts, making the replacement process complicated, time-consuming, and reducing work efficiency.
[0004] Therefore, a fully open platform door threshold indicator light is needed to solve the problems of existing technologies where the threshold cover plate must be removed first during replacement and maintenance, which involves multiple bolts, making the replacement process complex, time-consuming, and reducing work efficiency. Utility Model Content
[0005] The purpose of this utility model is to provide a fully open platform screen door threshold indicator light to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a fully open platform door threshold indicator light, comprising a platform area, a threshold area, a track area, a door body, an installation mechanism, an LED light strip body, and a top-out mechanism. The threshold area is located on the rear side of the platform area, the track area is located on the rear side of the threshold area, the door body is located above the threshold area, the installation mechanism is located on the inner front side of the threshold area and in front of the door body, the LED light strip body is located inside the installation mechanism, and the top-out mechanism is located below the LED light strip body.
[0007] It should be noted in the solution that the installation mechanism consists of an installation frame, a protective plate, a sealing ring, a fixing ring, a rotating column, a torsion spring, a stop block, and a heat dissipation mesh. The installation frame is fixedly connected to the inner front side of the threshold area. The ejection mechanism is symmetrically arranged on the left and right sides inside the installation frame. The LED light strip body is arranged above the ejection mechanism. The protective plate is arranged above the LED light strip body and is installed on the inner top surface of the installation frame.
[0008] It is worth noting that the mounting frame has an opening on the right side for the connecting wires of the LED light strip body to pass through.
[0009] Furthermore, it should be noted that the sealing ring is fixedly connected to the outside of the protective plate, and the heat dissipation mesh is fixedly connected to the bottom surface of the mounting frame.
[0010] In a preferred embodiment, mounting slots are symmetrically provided on the upper left and right sides of the mounting frame. The fixing ring is fixedly connected to the upper part of the mounting slot. The rotating column is rotatably connected to the inside and the top of the fixing ring. The torsion spring is fixedly connected between the top plate of the rotating column and the fixing ring, and the torsion spring is sleeved on the outside of the rotating column.
[0011] In a preferred embodiment, the stop block is fixedly connected to the left side of the top plate of the rotating column, the right side of the protective plate is provided with a limiting groove that matches the height of the stop block, and the top surface of the rotating column is provided with a slot.
[0012] In a preferred embodiment, the ejection mechanism consists of a support block, a conical block, a limiting block, and a spring. The support block is fixedly connected to the inside of the mounting frame, the conical block is disposed inside the support block, and the limiting blocks are symmetrically fixedly connected to the left and right sides of the conical block.
[0013] In a preferred embodiment, the support block has a groove inside that matches the limiting block, and the spring is fixedly connected between the bottom surface of the conical block and the inside of the support block.
[0014] Compared with the prior art, the fully open platform screen door sill indicator light provided by this utility model has at least the following beneficial effects:
[0015] (1) The protective plate can be opened by simply rotating the rotating column through the set installation mechanism. The LED light strip body is automatically pushed out by the ejection mechanism, which greatly simplifies the replacement and maintenance process, saves time and improves work efficiency. It solves the problem that the existing technology requires the removal of the threshold cover plate first when replacing and maintaining, and involves multiple bolts, making the replacement process complicated and time-consuming.
[0016] (2) The sealing ring fixedly connected to the outside of the protective plate can effectively prevent dust, water vapor and other substances from entering the installation frame, protect the LED light strip body from the influence of external environmental factors, extend the service life of the LED light strip body and reduce maintenance costs; the heat dissipation mesh can dissipate the heat generated by the LED light strip body during operation in a timely manner, avoid the LED light strip body performance degradation or damage due to excessive temperature, and ensure the stable operation of the LED light strip body. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0018] Figure 2 This is a top view structural diagram of the present invention;
[0019] Figure 3 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;
[0020] Figure 4 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure of the middle BB section;
[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle;
[0022] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point B.
[0023] In the diagram: 1. Platform area; 2. Threshold area; 3. Track area; 4. Door body; 5. Installation mechanism; 6. LED light strip body; 7. Top-out mechanism; 501. Mounting frame; 502. Protective plate; 503. Sealing ring; 504. Limiting groove; 505. Mounting groove; 506. Fixing ring; 507. Rotating column; 508. Torsion spring; 509. Stop block; 510. Heat dissipation mesh; 701. Support block; 702. Conical block; 703. Limiting block; 704. Spring. Detailed Implementation
[0024] The present invention will be further described below with reference to the embodiments.
[0025] Please see Figure 1-6This utility model provides a fully open platform door threshold indicator light, including a platform area 1, a threshold area 2, a track area 3, a door body 4, an installation mechanism 5, an LED light strip body 6, and a push-out mechanism 7. The threshold area 2 is located on the rear side of the platform area 1, the track area 3 is located on the rear side of the threshold area 2, the door body 4 is located above the threshold area 2, the installation mechanism 5 is located on the front side inside the threshold area 2, and the installation mechanism 5 is located in front of the door body 4, the LED light strip body 6 is located inside the installation mechanism 5, and the push-out mechanism 7 is located below the LED light strip body 6.
[0026] Further as Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that the installation mechanism 5 consists of an installation frame 501, a protective plate 502, a sealing ring 503, a fixing ring 506, a rotating column 507, a torsion spring 508, a stop block 509, and a heat dissipation mesh 510. The installation frame 501 is fixedly connected to the front side of the inside of the threshold area 2. The ejection mechanism 7 is symmetrically arranged on the left and right sides inside the installation frame 501. The LED light strip body 6 is arranged above the ejection mechanism 7. The protective plate 502 is arranged above the LED light strip body 6 and is installed on the top surface inside the installation frame 501.
[0027] Further as Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that the right side of the mounting frame 501 has an opening through which the connecting wire of the LED light strip body 6 can pass.
[0028] The LED light strip body 6 is connected to the external power supply and control circuit through the opening on the right side of the mounting frame 501, so that the LED light strip body 6 can work normally and provide threshold position indication for the platform.
[0029] Further as Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that the sealing ring 503 is fixedly connected to the outside of the protective plate 502, and the heat dissipation mesh 510 is fixedly connected to the bottom surface of the mounting frame 501.
[0030] The heat generated during the operation of the LED light strip body 6 can be dissipated through the heat dissipation mesh 510 fixedly connected to the bottom surface of the mounting frame 501, ensuring that the LED light strip body 6 operates in a suitable temperature environment.
[0031] Further as Figure 3 , Figure 4 and Figure 5As shown, it is worth noting that the mounting frame 501 has symmetrical mounting grooves 505 on the upper left and right sides. The fixing ring 506 is fixedly connected to the upper part of the mounting groove 505. The rotating column 507 is rotatably connected to the inside and the top of the fixing ring 506. The torsion spring 508 is fixedly connected between the top plate of the rotating column 507 and the fixing ring 506, and the torsion spring 508 is sleeved on the outside of the rotating column 507. The stop block 509 is fixedly connected to the left side of the top plate of the rotating column 507. The right side of the protective plate 502 has a limiting groove 504 that matches the height of the stop block 509. The top surface of the rotating column 507 has a slot.
[0032] When the LED light strip body 6 needs to be replaced or repaired, the rotating column 507 can be rotated by using a tool through the slot on the top surface of the rotating column 507 to overcome the elastic force of the torsion spring 508, so that the stop block 509 can be moved out of the limiting groove 504 of the protective plate 502, thereby making it easy to remove the protective plate 502.
[0033] As can be seen from the above working process, the protective plate 502 can be opened by simply rotating the rotating column 507 through the installation mechanism 5. The LED light strip body 6 can be automatically pushed out by the ejection mechanism 7, which greatly simplifies the replacement and maintenance process, saves time, and improves work efficiency. It solves the problem that in the existing technology, the threshold cover plate needs to be removed first when replacing and maintaining the LED light strip, which involves multiple bolts and has a complicated and time-consuming replacement process.
[0034] Further as Figure 3 , Figure 4 and Figure 6 As shown, it is worth noting that the ejection mechanism 7 consists of a support block 701, a conical block 702, a limiting block 703, and a spring 704. The support block 701 is fixedly connected to the inside of the mounting frame 501, the conical block 702 is disposed inside the support block 701, and the limiting block 703 is symmetrically fixedly connected to the left and right sides of the conical block 702.
[0035] Further as Figure 3 , Figure 4 and Figure 6 As shown, it is worth noting that the support block 701 has a groove inside that matches the limiting block 703, and the spring 704 is fixedly connected between the bottom surface of the conical block 702 and the inside of the support block 701.
[0036] Due to the elastic force of the spring 704, the conical block 702 moves upward within the support block 701, and the limiting block 703 slides in the groove provided in the support block 701 that matches the limiting block 703, ensuring the stability of the movement of the conical block 702; the upward movement of the conical block 702 pushes the LED light strip body 6 out of the mounting frame 501 by a certain height, making it convenient for operators to directly remove the LED light strip body 6.
[0037] The protective plate 502 is equipped with tempered high-transparency glass inside, which ensures that the light emitted by the LED light strip body 6 can be transmitted without affecting the indicator usability of the LED light strip body 6, while improving the protective capability of the protective plate 502 for the LED light strip body 6.
[0038] This solution includes the following working process: During use, the connecting wire of the LED light strip body 6 is connected to the external power supply and control circuit through the opening on the right side of the mounting frame 501, enabling the LED light strip body 6 to work normally and provide a threshold position indicator for the platform; two workers use a tool to simultaneously rotate the rotating column 507 through the slot, so that the stop block 509 is rotated to the appropriate position to avoid obstructing the installation of the LED light strip body 6; then the LED light strip body 6 is placed above the ejection mechanism 7. At this time, the spring 704 in the ejection mechanism 7 is in its natural state, and the conical block 702 provides some support for the LED light strip body 6 under the action of the spring 704; then the protective plate 502 is placed inside the mounting frame 501. The protective plate 502 covers the LED strip body 6, releasing the rotation of the rotating column 507. Under the action of the torsion spring 508, the stop block 509 is reset, rotating the stop block 509 into the limit groove 504, thereby installing the protective plate 502 above the LED strip body 6. At this time, the sealing ring 503 is fixedly connected to the outside of the protective plate 502, playing a sealing role and preventing dust, moisture, etc. from entering the interior of the mounting frame 501. At the same time, the LED strip body 6 moves down and compresses the spring 704 below. The heat generated by the LED strip body 6 during operation can be dissipated through the heat dissipation mesh 510 fixedly connected to the bottom surface of the mounting frame 501, ensuring that the LED strip body 6 operates in a suitable temperature environment.
[0039] When the LED light strip body 6 needs to be replaced or repaired, the rotating column 507 is rotated using a tool through the slot on the top surface of the rotating column 507. This overcomes the elastic force of the torsion spring 508, causing the stop block 509 to move out of the limiting groove 504 of the protective plate 502. The protective plate 502 can then be easily removed. At this time, the compression of the spring 704 is released, allowing the spring 704 to return to its original position. This causes the conical block 702 to move upward, pushing out the LED light strip body 6, making it easy to remove the LED light strip body 6 for replacement.
[0040] In summary: The installation mechanism 5 allows for easy opening of the protective plate 502 by simply rotating the rotating column 507, and the ejection mechanism 7 automatically ejects the LED strip body 6, greatly simplifying the replacement and maintenance process, saving time, and improving work efficiency. It solves the problem in existing technologies where replacement and maintenance require removing the threshold cover plate first, involving multiple bolts, resulting in a complex and time-consuming process. The sealing ring 503, externally fixed to the protective plate 502, effectively prevents dust and moisture from entering the mounting frame 501, protecting the LED strip body 6 from external environmental factors, extending its lifespan, and reducing maintenance costs. The heat dissipation mesh 510 effectively dissipates the heat generated by the LED strip body 6 during operation, preventing performance degradation or damage due to overheating and ensuring stable operation.
Claims
1. A platform screen door sill indicator light, comprising a platform area (1), a sill area (2), a track area (3), a door body (4), an installation mechanism (5), an LED light strip body (6), and a push-out mechanism (7), characterized in that: The threshold area (2) is located on the rear side of the platform area (1), the track area (3) is located on the rear side of the threshold area (2), the door body (4) is located above the threshold area (2), the installation mechanism (5) is located on the front side inside the threshold area (2) and in front of the door body (4), the LED light strip body (6) is located inside the installation mechanism (5), and the ejection mechanism (7) is located below the LED light strip body (6).
2. The platform screen door sill indicator light according to claim 1, characterized in that: The installation mechanism (5) consists of an installation frame (501), a protective plate (502), a sealing ring (503), a fixing ring (506), a rotating column (507), a torsion spring (508), a stop block (509), and a heat dissipation mesh (510). The installation frame (501) is fixedly connected to the front side inside the threshold area (2). The ejection mechanism (7) is symmetrically arranged on the left and right sides inside the installation frame (501). The LED light strip body (6) is arranged above the ejection mechanism (7). The protective plate (502) is arranged above the LED light strip body (6) and is installed on the top surface inside the installation frame (501).
3. The platform screen door sill indicator light according to claim 2, characterized in that: The mounting frame (501) has an opening on the right side for the connecting wire of the LED light strip body (6) to pass through.
4. The platform screen door sill indicator light according to claim 3, characterized in that: The sealing ring (503) is fixedly connected to the outside of the protective plate (502), and the heat dissipation mesh (510) is fixedly connected to the bottom surface of the mounting frame (501).
5. A platform screen door sill indicator light according to claim 4, characterized in that: The mounting frame (501) has symmetrical mounting slots (505) on the upper left and right sides. The fixing ring (506) is fixedly connected to the upper part of the mounting slot (505). The rotating column (507) is rotatably connected to the inside and the top of the fixing ring (506). The torsion spring (508) is fixedly connected between the top plate of the rotating column (507) and the fixing ring (506), and the torsion spring (508) is sleeved on the outside of the rotating column (507).
6. A platform screen door sill indicator light according to claim 5, characterized in that: The stop block (509) is fixedly connected to the left side of the top plate of the rotating column (507). The right side of the protective plate (502) is provided with a limiting groove (504) that matches the height of the stop block (509). The top surface of the rotating column (507) is provided with a slot.
7. A platform screen door sill indicator light according to claim 6, characterized in that: The ejection mechanism (7) consists of a support block (701), a conical block (702), a limiting block (703), and a spring (704). The support block (701) is fixedly connected to the inside of the mounting frame (501), the conical block (702) is disposed inside the support block (701), and the limiting block (703) is symmetrically fixedly connected to the left and right sides of the conical block (702).
8. A platform screen door sill indicator light according to claim 7, characterized in that: The support block (701) has a groove inside that matches the limiting block (703), and the spring (704) is fixedly connected between the bottom surface of the conical block (702) and the inside of the support block (701).