Safety engineering construction night warning board
The construction night warning sign, which combines an infrared sensing unit and a timing module, solves the problem of unchanging visual warnings being easily overlooked, achieving significant visual changes and energy-saving effects. It also has good structural stability and is easy to assemble and disassemble.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIAN ZHIHENG ENGINEERING TECHNOLOGY CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-08-04
AI Technical Summary
Existing construction nighttime warning devices are easily overlooked due to their unchanging visual warnings, and the high brightness of the warnings is not conducive to energy conservation, especially affecting standby time when powered by batteries or solar energy.
The LED strip uses an infrared sensing unit to increase the brightness of the light strip when people approach. Combined with a timing module and battery power, the LED lights display prompts and slogans. The light strip is made of light-emitting diodes, and the support frame is designed with an adjustable triangular structure to improve stability.
It significantly increases warning brightness when people approach, improves visual change effect, saves energy and electricity, reduces accident risk, and the device has a stable structure that is easy to disassemble and assemble.
Smart Images

Figure CN224591354U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of warning device technology, specifically a nighttime warning sign for safe construction projects. Background Technology
[0002] During construction, insufficient light and low visibility at night can make it easy for people to overlook potential dangers, leading to an increased accident rate. Therefore, nighttime warning devices are usually installed at construction sites.
[0003] A survey of nighttime safety warning products for construction projects on the market revealed that these devices simply power the LED light source within the safety signboard using solar energy or an external power source, providing a continuous nighttime illumination at a fixed brightness. While these devices offer nighttime warnings, due to human physiology, the human eye is not sensitive to unchanging visual warnings. Even high-brightness visual warnings may be ignored. Furthermore, simply increasing the brightness of the warning lights is not energy-efficient, especially when using batteries or pure solar power, which may affect standby time. Utility Model Content
[0004] To address the technical problems existing in the background art, this utility model provides a nighttime warning sign for safe construction projects.
[0005] The technical solution of this utility model is as follows: A safety construction nighttime warning sign includes a support frame and a warning panel, with the warning panel fixed to the support frame; It also includes a control module, an infrared sensing unit, a light strip, a safety signboard, a timing module, and a battery installed behind the warning panel. The safety signboard integrates several LED lights, which can display safety reminders when powered on. The light strip is composed of several light-emitting diodes, with each light-emitting diode located between two adjacent LEDs; The battery, control module, infrared sensing unit, and LED strip are electrically connected. The battery, safety signboard, and timing module are electrically connected.
[0006] The infrared sensing unit is an SL971 infrared switch.
[0007] An infrared sensor unit is installed inside the through hole in the front of the safety signboard, and a transparent protective cover is installed in front of the infrared sensor unit.
[0008] The control module is an MSP430 microcontroller, located behind the warning panel.
[0009] The timing module is GM-1101-10-VV-1T, and it is located behind the warning panel.
[0010] The support frame includes a first support frame and a second support frame. The top of the first support frame and the second support frame are rotatably connected. The height of the first support frame and the second support frame is adjustable. A power platform is detachably connected between the two, and the battery is installed on the power platform.
[0011] The first support frame has a first slide groove on its inner side, and the second support frame has a second slide groove on its inner side. The power platform has slide rails on both sides, which cooperate with the first slide groove and the second slide groove respectively.
[0012] The first slide groove is parallel to the first support frame, and the second slide groove is parallel to the second support frame.
[0013] After the power platform is installed, the angle between the first support frame and the second support frame is 45-70 degrees.
[0014] The cross-sectional area of the first and second support frames gradually increases from top to bottom.
[0015] The beneficial effects of this utility model are as follows: 1. When no one is passing by at night, the warning sign can display "Construction Ahead" or similar warning signs through LED lights. The infrared sensing unit can identify people approaching the construction area at night, and the control module will turn on the circuit to make the light strip light up, increasing the brightness of the safety sign. This will result in a significant visual change in the warning information received by people, and the warning effect will be better.
[0016] 2. The power platform design makes the device more stable, the battery is easy to install and remove, and it is easy to store when not in use, saving space. Attached Figure Description
[0017] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a magnified view of a section of the safety signboard; Figure 4 This is a magnified view of a portion of the infrared sensing unit; Figure 5 This is a magnified view of a section of the slide rail.
[0018] The components represented by the various reference numerals in the diagram are: 1. Support frame; 11. First support frame; 12. Second support frame; 13. Power platform; 131. Slide rail; 2. Warning panel; 3. Safety slogan board; 4. LED light; 5. Light-emitting diode; 6. Infrared sensing unit; 61. Protective cover; 62. Through hole. Detailed Implementation
[0019] The technical solution of this utility model is as follows: See Figure 1 A safety engineering construction night warning sign includes a support frame 1 and a warning panel 2, with the warning panel 2 fixed on the support frame 1; It also includes a control module, an infrared sensing unit 6, a light strip, a safety signboard 3, a timing module, and a battery located behind the warning panel 2, all mounted on the warning panel 2.
[0020] The safety signboard 3 integrates several LED lights 4. When the LED lights 4 are powered on, they can display a warning sign such as "Construction ahead".
[0021] The battery, safety signboard 3, and timing module are electrically connected.
[0022] The timing module is GM-1101-10-VV-1T, and it is located behind warning panel 2.
[0023] To set a timer for the timer module, for example, to set a timer for 8 hours, after placing the warning sign in the designated construction area, turn on the switch. This connects the battery, safety signboard 3, and the timer module circuit. After 8 hours, as the sun rises and the brightness increases, the timer module cuts off the circuit.
[0024] LED light 4 can serve as a warning in low visibility environments at sunset, and the timing module saves electricity.
[0025] Furthermore, a photosensitive module can be added to the circuit to adjust the circuit's on / off state based on the brightness.
[0026] The light strip is composed of several light-emitting diodes 5, with each light-emitting diode 5 located between two adjacent LEDs 4; for example Figure 3 As shown.
[0027] The battery, control module, infrared sensing unit 6, and lamp are electrically connected.
[0028] The control module is an MSP430 microcontroller, located behind warning panel 2.
[0029] Infrared sensing unit 6 is an SL971 type infrared switch.
[0030] When someone passes by the warning sign, the infrared sensing unit 6 senses the infrared light and sends a high-level signal to the control module. The control module then activates the control circuit, and the battery powers the LED strip, causing it to illuminate.
[0031] At this time, the light strip and LED 4 light are emitted simultaneously. The SL971 infrared switch can detect changes in infrared light within an 8m range. When someone approaches the construction area but is still a certain distance away, the light strip enhances the brightness of the warning sign, thereby causing a significant visual change in the warning information received by the personnel and improving the level of warning.
[0032] In addition, most warning signs are used on the roadside, between unconstructed and constructed areas. When drivers pass through the unconstructed area, increasing the brightness of the warning signs within a certain range can give drivers some time to slow down and reduce the occurrence of accidents.
[0033] Furthermore, a delay program is set for the control module to set a delay for each time the light strip lights up.
[0034] To control the duration of each light strip illumination, it is recommended to set it to 20s or 30s, which serves as a warning while saving energy.
[0035] When the LED light circuit of the safety sign malfunctions and cannot light up, the light strip can serve as a supplement, still enabling the warning sign to play its warning and reminder role.
[0036] Preferably, a through hole 62 is provided on the front of the safety signboard 3, and an infrared sensing unit 6 is installed in the through hole 62. A transparent protective cover 61 is provided in front of the infrared sensing unit 6. The transparent protective cover 61 is installed in the through hole 62 by means of easy disassembly such as threads. See [reference needed] Figure 4 .
[0037] Infrared sensing units are susceptible to environmental influences, such as heavy rain. Therefore, it is essential to set up a protective structure for the infrared sensing unit to prevent rainwater from interfering with its operation and to block splashing water or flying stones from interfering with its normal operation.
[0038] The support frame 1 includes a first support frame 11 and a second support frame 12. The top of the first support frame 11 and the second support frame 12 are rotatably connected. The heights of the first support frame 11 and the second support frame 12 are adjustable. A power platform 13 is detachably connected between the two, and the battery is mounted on the power platform 13.
[0039] A first slide groove is formed on the inner side of the first support frame 11, and a second slide groove is formed on the inner side of the second support frame 12. Slide rails 131 are provided on both sides of the power platform 13, which respectively cooperate with the first and second slide grooves. Figure 2 Easier to understand.
[0040] The design of the power platform 13 makes the device more stable, the battery is easy to install and remove, and it is easy to store when not in use, saving space.
[0041] The first slide groove is parallel to the first support frame 11, and the second slide groove is parallel to the second support frame 12.
[0042] Compared to traditional rectangular slide rails 131 or T-shaped slide rails 131, the shape of the slide grooves that match them would compromise the strength of the first support frame 11 and the second support frame 12. However, the first slide groove is parallel to the first support frame 11, and the second slide groove is parallel to the second support frame 12, which can serve as a connection while ensuring the strength of the first support frame 11 and the second support frame 12.
[0043] Furthermore, a downward protrusion parallel to the first support frame 11 or the second support frame 12 can be provided at the end of the slide rail 131, such as... Figure 5 As shown, this prevents the distance between the first support frame 11 and the second support frame 12 from increasing, and makes the connection between the first support frame 11 and the second support frame 12 more secure.
[0044] After the power platform 13 is installed, the angle between the first support frame 11 and the second support frame 12 is 45-70 degrees.
[0045] The weight of the power platform 13 and the battery acts as a counterweight, and makes the overall device stable in a triangle. Preferably, the angle between the first support frame 11 and the second support frame 12 is 60 degrees, forming an equilateral triangle, which is more stable.
[0046] The cross-sectional area of the first support frame 11 and the second support frame 12 gradually increases from top to bottom, with the lower cross-sectional area being larger and providing stronger support. The weight also gradually increases from top to bottom, and the center of gravity shifts downward, further improving stability.
Claims
1. A nighttime safety warning sign for construction projects, characterized in that, It includes a support frame (1) and a warning panel (2), wherein the warning panel (2) is fixed on the support frame (1); It also includes a control module, an infrared sensing unit (6), a light strip, a safety signboard (3), a timing module, and a battery installed on the warning panel (2); The safety signboard (3) integrates several LED lights (4), which can display safety reminder signs after being powered on; The light strip is composed of several light-emitting diodes (5), with each light-emitting diode (5) located between two adjacent LEDs (4); The battery, control module, infrared sensing unit (6) and lamp strip are electrically connected; The battery, safety signboard (3), and timing module are electrically connected.
2. The safety engineering construction night warning board according to claim 1, characterized in that, The infrared sensing unit (6) is an SL971 infrared switch.
3. The safety engineering construction night warning board according to claim 1, characterized in that, The safety signboard (3) has a through hole (61) in front, an infrared sensing unit (6) is installed in the through hole (61), and a transparent protective cover (62) is provided in front of the infrared sensing unit (6).
4. The safety engineering construction night warning board according to claim 1, characterized in that, The control module is an MSP430 microcontroller, which is located behind the warning panel (2).
5. The safety engineering construction night warning board according to claim 1, characterized in that, The timing module is GM-1101-10-VV-1T, which is located behind the warning panel (2).
6. The safety engineering construction night warning board according to claim 1, characterized in that, The support frame (1) includes a first support frame (11) and a second support frame (12). The first support frame (11) and the second support frame (12) are rotatably connected at the top. The height of the first support frame (11) and the second support frame (12) is adjustable. A power platform (13) is detachably connected between them. The battery is mounted on the power platform (13).
7. The safety engineering construction night warning board according to claim 6, characterized in that, The first support frame (11) has a first slide groove on its inner side, the second support frame (12) has a second slide groove on its inner side, and the power platform (13) has slide rails (131) on both sides, which cooperate with the first slide groove and the second slide groove respectively.
8. The safety engineering construction night warning board according to claim 7, characterized in that, The first slide groove is parallel to the first support frame (11), and the second slide groove is parallel to the second support frame (12).
9. A nighttime safety warning sign for construction work according to claim 6, characterized in that, After the power platform (13) is installed, the angle between the first support frame (11) and the second support frame (12) is 45-70 degrees.
10. The safety engineering construction night warning board according to claim 6, characterized in that, The cross-sectional area of the first support frame (11) and the second support frame (12) gradually increases from top to bottom.