Adaptive traffic signal based on external light intensity variations

Abstract

The application discloses adaptive traffic signal lamps based on external illumination intensity change, which comprises a lamp holder and a plurality of signal lamp groups arranged on the lamp holder, wherein the signal lamp group comprises a plurality of signal lamps arranged vertically; the signal lamp comprises a ring-shaped lamp and a lamp body rotatably arranged in the ring-shaped lamp; the lamp body comprises oppositely arranged first and second lamp plates; the lamp holder is provided with a first sensor for sensing ambient light and a second sensor for sensing car light; adjacent lamp bodies in the vertical direction are connected through connecting shafts, and the lamp holder is provided with a power unit for driving the rotation of the lamp body; and the first sensor is in control connection with the power unit; the first and second sensors are arranged to identify ambient light and car light respectively, so that the automatic switching of the display modes in the daytime and nighttime is realized, and the problem of power waste caused by the constant brightness of traditional signal lamps in the daytime and nighttime is solved.

Description

Technical Field

[0001] This invention relates to the field of traffic signal equipment technology, and in particular to adaptive traffic lights based on changes in external light intensity. Background Technology

[0002] In road traffic management, when fixed traffic lights malfunction due to faults, maintenance, or power outages, it is usually necessary to temporarily deploy energy-storage mobile traffic lights at intersections to maintain basic traffic order and safety. These temporary traffic lights typically use solar photovoltaic panels in conjunction with battery banks as their energy supply and operate at a constant brightness around the clock.

[0003] However, existing temporary traffic lights have the following prominent problems in practical applications: First, to ensure sufficient visibility under strong sunlight during the day, traffic lights need to operate at high brightness. However, temporary traffic lights rely entirely on solar energy, which has limited energy storage capacity. Maintaining high brightness all day during prolonged periods of cloudy or rainy weather, or in cases of insufficient sunlight, can easily lead to over-discharge of the batteries, causing the traffic lights to unexpectedly extinguish at night or during subsequent use, posing a serious traffic safety hazard.

[0004] Secondly, temporary traffic lights are exposed to the outdoor environment for a long time, and dust easily accumulates on the light surface, affecting the display effect. Frequent manual cleaning increases maintenance costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adaptive traffic light based on changes in external light intensity. This light can switch display modes according to the type of ambient light, saving energy while ensuring display quality, and also has a self-cleaning function.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adaptive traffic signal light based on changes in external light intensity, comprising a lamp holder and several groups of signal lights mounted on the lamp holder, wherein the signal light groups comprise several vertically arranged signal lights; The signal light includes a ring light and a lamp body that is rotatably disposed inside the ring light; The lamp body includes a first lamp plate and a second lamp plate arranged opposite to each other; The lamp holder is equipped with a first sensor for sensing ambient light and a second sensor for sensing vehicle lights; The adjacent lamp bodies in the vertical direction are connected by a connecting shaft. The lamp holder is equipped with a power unit that drives the lamp body to rotate. The first sensor is connected to the power unit for control. The first sensor is controlled and connected to the first light panel to enhance the traffic light display effect during the day in conjunction with the ring light; the second light panel is controlled and connected to the second sensor to emit light when illuminated at night to enhance the traffic light display effect.

[0007] In the above scheme, preferably, the power unit includes a motor, a transmission gear, and a drive gear connected to the lamp body. The transmission gear meshes with the drive gear to realize the rotation of the lamp body, thereby switching the display between the first lamp panel and the second lamp panel.

[0008] In the above scheme, preferably, the first light panel is an LED light panel and the second light panel is an electroluminescent cold light sheet.

[0009] In the above scheme, preferably, the ring light includes an inner hole, the lamp body is rotatably disposed in the inner hole, and after the first lamp plate and the second lamp plate are rotated and switched, they both cooperate with the ring light to form a flat signal light display interface.

[0010] In the above scheme, preferably, the lamp body is electrically connected to the controller via an electric rotary joint.

[0011] In the above scheme, preferably, the lamp holder is provided with a cleaning cavity, and the cleaning cavity is provided with a cleaning brush connected to the motor, the outer edge of the cleaning brush being in contact with the lamp body.

[0012] In the above scheme, preferably, the cleaning brush is a cylindrical soft brush, and a dust collection chamber is provided at the bottom of the cleaning chamber.

[0013] In the above scheme, preferably, the cleaning brush includes a brush shaft connected to a motor, the end of the brush shaft is provided with a scraper that matches the curved surface at the bottom of the dust collection chamber, and the bottom of the dust collection chamber is provided with a suction channel.

[0014] In the above scheme, preferably, the bottom of the lamp holder is provided with ventilation pipes that are spatially staggered, the ventilation pipes are connected to the corresponding suction channels, and the diameter of the suction channel is smaller than the diameter of the ventilation pipe.

[0015] In the above scheme, preferably, the dust collection chamber is provided with a mesh plate that separates the cleaning brushes.

[0016] The beneficial effects of the present invention are: by setting a first sensor and a second sensor to identify ambient light and vehicle headlights respectively, the present invention realizes the automatic switching between daytime and nighttime display modes, and solves the problem of energy waste caused by traditional traffic lights being constantly lit day and night; The lamp body adopts a double-sided design. During the day, it uses an LED light panel with a ring light for high-brightness display. At night, it flips into an electroluminescent cold light sheet and is triggered to emit light when the vehicle headlights are shone on it. It achieves anti-interference display at night with extremely low power consumption and effectively extends the energy storage range. Meanwhile, the power unit that drives the lamp body to rotate also drives the cleaning brush to clean the surface of the lamp body when switching display modes. The rotation action completes the display switching and dust removal maintenance in one go, with a compact structure and no additional energy consumption. In addition, the ventilation pipe and suction channel at the bottom of the lamp holder form a Venturi effect channel, which uses the airflow generated by the passing vehicle to passively suck up the dust collection chamber, further enhancing the dust removal effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 4 This is a perspective view of the connection structure between the brush shaft and the scraper bar of the present invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1-4 .

[0022] An adaptive traffic light based on changes in external light intensity includes a lamp holder 1 and four sets of signal lights 2 mounted on the lamp holder 1. The four sets of signal lights are arranged in four directions, meaning that this temporary traffic light can be placed at an intersection to indicate traffic signals. Each set of signal lights 2 includes several vertically arranged signal lights 3, corresponding to red, yellow, and green signals respectively.

[0023] The signal light 3 includes a ring light 301 and a lamp body 302 rotatably disposed within the ring light 301. The ring light 301 is circular in shape and has an inner hole 31 in the center. The lamp body 302 is rotatably disposed within the inner hole 31. The lamp body 302 includes a first lamp plate 303 and a second lamp plate 304 arranged back-to-back opposite each other. The first lamp plate 303 is an LED lamp plate, composed of an array of multiple high-brightness LED beads, suitable for high-brightness display during the day. The second lamp plate 304 is an electroluminescent cold light sheet, i.e., an EL cold light sheet, which emits uniform and soft light with extremely low power consumption, suitable for auxiliary display at night.

[0024] The lamp holder 1 is equipped with a first sensor 101 for sensing ambient light and a second sensor 102 for sensing vehicle headlights. The first sensor 101 is mounted on the top of the lamp holder 1, facing the sky, and is used to detect ambient light intensity to determine day / night. The second sensor 102 is mounted on the front of the lamp holder 1, facing the direction of oncoming traffic, and is used to detect whether there is direct vehicle headlight illumination. Each group of traffic lights 2 is equipped with one second sensor 102. Figure 1 As shown.

[0025] Adjacent lamp bodies 302 in the vertical direction are connected by a connecting shaft 305, so that all lamp bodies 302 in the same group of signal lights 2 rotate synchronously. The lamp holder 1 is equipped with a power unit 4 that drives the lamp body 302 to rotate.

[0026] like Figure 2 As shown, the power unit 4 includes a motor 401, a transmission gear 402, and a drive gear 403 connected to the uppermost lamp body 302. The motor 401 is fixed inside the top cavity of the lamp holder 1, and its output shaft is connected to the transmission gear 402. The transmission gear 402 meshes with the drive gear 403. To increase the gear ratio, the transmission gear 402 can also be composed of multiple gear sets, so that when the drive gear 403 rotates 180°, the motor 401 shaft rotates several times. The drive gear 403 is fixedly connected to the connecting shaft 305. When the motor 401 rotates, it drives the drive gear 403 to rotate through the transmission gear 402, and then drives the entire lamp body 302 to rotate synchronously through the connecting shaft 305.

[0027] The first sensor 101 is connected to the motor 401 for control. When the first sensor 101 detects that the ambient light intensity drops below the night threshold, the controller sends a command to the motor 401 to drive the lamp body 302 to rotate 180 degrees, turning the first lamp panel 303, which was originally facing outward, to face inward, and the second lamp panel 304 to face outward.

[0028] The first light panel 303 is controlled and connected to the first sensor 101. In daytime mode, the first light panel 303, as the main display surface, faces outwards and emits light together with the ring light 301. The ring light from the ring light 301 and the surface light from the first light panel 303 are superimposed to form a high-brightness, highly uniform signal light display interface, effectively combating the sun phantom effect. The second light panel 304 is controlled and connected to the second sensor 102. In nighttime mode, the second light panel 304 faces outwards. When the second sensor 102 detects a vehicle's high beam, the second light panel 304 is powered on and emits light. The soft surface light source of the electroluminescent cold light sheet can effectively combat the headlight dilution effect, ensuring clear and distinguishable signal light colors with extremely low power consumption.

[0029] The inner hole 31 of the ring light 301 is circular, and the outer shape of the lamp body 302 matches the inner hole 31. After the first lamp plate 303 and the second lamp plate 304 are flipped and switched into place, they can both be flush with the inner surface of the ring light 301, such as... Figure 3 As shown, the signal light display interface forms a flat overall display, ensuring that the signal light pattern is complete and the boundaries are clear.

[0030] The lamp body 302 is electrically connected to the controller via an electric rotary joint. The electric rotary joint ensures that the power supply and signal lines of the first lamp board 303 and the second lamp board 304 will not be twisted during the continuous 360-degree rotation of the lamp body 302.

[0031] like Figure 2 As shown, the lamp holder 1 is also provided with a cleaning chamber 11, which is located inside the signal light group 2. The cleaning chamber 11 is provided with a cleaning brush 12, which is a cylindrical soft brush. Its brush shaft 14 is connected to the output shaft of the motor 401 through a coupling. When the motor 401 drives the lamp body 302 to rotate, the cleaning brush 12 rotates synchronously, and its outer edge bristles contact the surface of the lamp body 302 that has rotated into the cleaning chamber 11, brushing away the dust on the lamp plate.

[0032] The bottom of the cleaning chamber 11 is provided with a dust collection chamber 13, and a mesh plate 18 is provided inside the dust collection chamber 13 to separate the cleaning brush 12 at the top. The mesh of the mesh plate 18 allows dust to pass through and filters some large dust particles to prevent large impurities from accumulating at the bottom of the dust collection chamber 13 and forming a blockage.

[0033] The end of the brush shaft 14 extends to the bottom of the dust collection chamber 13 and is provided with a scraper 15. The curvature of the scraper 15 matches the curved surface of the bottom of the dust collection chamber 13. During rotation, it scrapes the bottom of the dust collection chamber 13 to concentrate the deposited dust.

[0034] The bottom of the dust collection chamber 13 is provided with several vertically downward suction channels 16, and the bottom of the lamp holder 1 is provided with spatially staggered ventilation pipes 17. The staggered angle is preferably vertical. The ventilation pipes 17 are arranged in a cross shape or a star shape at the bottom of the lamp holder 1, with openings in all directions, and the staggered ventilation pipes 17 do not interfere with each other in space. The ventilation pipes 17 are connected to the corresponding suction channels 16. The diameter of the suction channel 16 is smaller than the diameter of the ventilation pipe 17, forming a Venturi effect structure. When a vehicle passes by, the airflow under the vehicle rushes into the ventilation pipe 17, accelerates at the narrowing point of the suction channel 16, generates negative pressure, and passively sucks the dust collection chamber 13, expelling the raised dust. At the same time, the rotation of the scraper 15 will scrape some dust into the suction channel 16. Under the repeated airflow scouring of the ventilation pipe 17, the dust accumulated inside the dust collection chamber 13 is gradually discharged.

[0035] This invention relates to an adaptive traffic light based on changes in external light intensity, and its working principle is as follows: 1. Automatic switching between day and night display modes A first sensor 101 installed on the top of the lamp holder 1 detects the ambient light level in real time. When the ambient light level is higher than a set threshold, the system determines that it is daytime. At this time, the first lamp panel 303 of the lamp body 302 faces outward, serving as the main display surface. The first lamp panel 303 is a high-brightness LED panel, which emits light together with the ring light 301. The two are superimposed to form a high-brightness, highly uniform signal light display interface, using sufficient luminous intensity to counteract the sun's phantom effect during the day and ensure that the signal light color is clearly distinguishable.

[0036] When the first sensor 101 detects that the ambient light level has dropped below the nighttime threshold, the controller determines that it has entered nighttime mode and immediately sends a command to the motor 401 of the power unit 4. The motor 401 starts and drives the drive gear 403 to rotate via the transmission gear 402. The drive gear 403 drives all the lamps 302 of the entire signal light group 2 to rotate synchronously by 180 degrees via the connecting shaft 305. After the rotation is completed, the first lamp panel 303, which was originally facing outward, turns inward, while the second lamp panel 304, which was originally facing inward, turns outward, completing the switch from daytime display mode to nighttime display mode.

[0037] In night mode, the second light panel 304 faces outwards as the display surface. The second light panel 304 is an electroluminescent cold light sheet that does not emit light under normal conditions. Only the ring light 301 maintains the basic signal display at low brightness, which greatly reduces power consumption.

[0038] Each signal light group 2 has a corresponding second sensor 102 facing the direction of oncoming traffic to detect whether there is direct headlight illumination. When a vehicle behind turns on its high beams or other strong light source and shines directly on the signal light surface, the second sensor 102 detects a sudden change in light intensity and determines it as headlight illumination. The controller then drives the corresponding second lamp panel 304 to emit light. The soft and uniform surface light source emitted by the electroluminescent cold light sheet can effectively counteract the color dilution effect caused by direct headlight illumination, ensuring that the signal light color remains clearly visible even against a strong light background. When the vehicle leaves and the headlight illumination disappears, the second lamp panel 304 automatically turns off and returns to a low-power standby state. Since each of the four signal light groups 2 is equipped with an independent second sensor 102, headlight interference from each direction can be detected and responded to independently without mutual interference.

[0039] II. Lamp body self-cleaning When the motor 401 drives the lamp body 302 to rotate, the cleaning brush 12 rotates synchronously with the output shaft of the motor 401. During the rotation, the lamp body 302 passes through the cleaning chamber 11, and the first lamp plate 303 and the second lamp plate 304 on its surface come into contact with the bristles of the cleaning brush 12 in sequence. The bristles remove the dust attached to the surface of the lamp plate. The removed dust falls into the dust collection chamber 13 below the cleaning chamber 11.

[0040] During rotation, the scraper 15 at the end of the brush shaft 14 scrapes along the bottom curved surface of the dust collection chamber 13, concentrating the deposited dust near the inlet of the suction channel 16.

[0041] The ventilation ducts 17 at the bottom of the lamp holder 1 are arranged in a staggered pattern and open in multiple directions. When a vehicle passes near the traffic light, the airflow under the vehicle rushes into the ventilation ducts 17. The airflow is accelerated at the connection between the ventilation ducts 17 and the suction channel 16 due to the narrowing of the duct diameter. According to the Venturi effect, a negative pressure is generated, which forms a suction effect on the dust collection chamber 13. As the vehicle passes by repeatedly, the airflow washes over the dust collection chamber 13 multiple times, gradually expelling the fine dust accumulated in the dust collection chamber 13 through the suction channel 16 and the ventilation ducts 17 to the outside of the lamp body, thus achieving continuous dust removal.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive traffic signal light based on changes in external light intensity, characterized in that: It includes a lamp holder (1) and several sets of signal lamps (2) arranged on the lamp holder (1), wherein the signal lamps (2) include several signal lamps (3) arranged vertically; The signal light (3) includes a ring light (301) and a lamp body (302) rotatably disposed within the ring light (301); The lamp body (302) includes a first lamp plate (303) and a second lamp plate (304) disposed opposite to each other; The lamp holder (1) is provided with a first sensor (101) for sensing ambient light and a second sensor (102) for sensing vehicle lights. The adjacent lamp bodies (302) in the vertical direction are connected by a connecting shaft (305). The lamp holder (1) is provided with a power unit (4) that drives the lamp body (302) to rotate. The first sensor (101) is connected to the power unit (4) in a control manner. The first sensor (101) is controlled to connect with the first light panel (303) to enhance the traffic light display effect in conjunction with the ring light (301) during the day; the second light panel (304) is controlled to connect with the second sensor (102) to emit light when illuminated at night to enhance the traffic light display effect.

2. The adaptive traffic signal light based on changes in external light intensity according to claim 1, characterized in that: The power unit (4) includes a motor (401), a transmission gear (402), and a drive gear (403) connected to the lamp body (302). The transmission gear (402) meshes with the drive gear (403) to realize the rotation of the lamp body (302), thereby switching the display between the first lamp panel (303) and the second lamp panel (304).

3. The adaptive traffic signal light based on changes in external light intensity according to claim 1, characterized in that: The first lamp board (303) is an LED lamp board, and the second lamp board (304) is an electroluminescent cold light sheet.

4. The adaptive traffic signal light based on changes in external light intensity according to claim 1, characterized in that: The ring light (301) includes an inner hole (31), and the lamp body (302) is rotatably disposed in the inner hole (31). After the first lamp plate (303) and the second lamp plate (304) are rotated and switched, they cooperate with the ring light (301) to form a flat signal light display interface.

5. The adaptive traffic signal light based on changes in external light intensity according to claim 1, characterized in that: The lamp body (302) is electrically connected to the controller via an electric rotary joint.

6. The adaptive traffic signal light based on changes in external light intensity according to claim 2, characterized in that: The lamp holder (1) is provided with a cleaning cavity (11), and the cleaning cavity (11) is provided with a cleaning brush (12) connected to the motor (401). The outer edge of the cleaning brush (12) is in contact with the lamp body (302).

7. The adaptive traffic signal light based on changes in external light intensity according to claim 6, characterized in that: The cleaning brush (12) is a cylindrical soft brush, and a dust collection chamber (13) is provided at the bottom of the cleaning chamber (11).

8. The adaptive traffic signal light based on changes in external light intensity according to claim 7, characterized in that: The cleaning brush (12) includes a brush shaft (14) connected to a motor (401). The end of the brush shaft (14) is provided with a scraper (15) that matches the bottom curved surface of the dust collection chamber (13). The bottom of the dust collection chamber (13) is provided with a suction channel (16).

9. The adaptive traffic signal light based on changes in external light intensity according to claim 8, characterized in that: The lamp holder (1) has a ventilation pipe (17) arranged in a spatially intersecting manner at its bottom. The ventilation pipe (17) is connected to the corresponding suction channel (16), and the diameter of the suction channel (16) is smaller than that of the ventilation pipe (17).

10. The adaptive traffic signal light based on changes in external light intensity according to claim 6, characterized in that: The dust collection chamber (13) is provided with a mesh plate (18) that separates the cleaning brush (12).

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