Dual color temperature roadway lighting system and dual color temperature roadway lighting fixtures

Abstract

To provide a road dual color temperature roadway lighting system and a dual color temperature roadway lighting fixture that improve nighttime visibility and enhance safety. [Solution] The road dual color temperature street lighting system 1 of the present invention includes a plurality of first street lights 11 and second street lights 12. The first street lights are installed in a warning area A of the road, and a first light source module 111 having a first color temperature is installed inside the first street light. The second street lights are installed in a normal area B, and a second light source module 121 having a second color temperature is installed inside the second street light. The normal area is adjacent to the warning area, and the installation positions of the normal area and the warning area on the road are such that, relative to the traveling direction of vehicles traveling on the road, vehicles travel from the normal area toward the warning area, and the first color temperature is higher than the second color temperature. The present invention arranges light sources with different color temperatures corresponding to different road areas based on human vision and the spectral characteristics of the light sources.

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture, and more particularly to a road dual color temperature roadway lighting system and a dual color temperature roadway lighting fixture. [Background technology]

[0002] Many conventional road lighting systems use light sources with a fixed color temperature (e.g., a uniform installation of low-color-temperature yellow light), which does not meet the need to change lighting for different areas of the road (e.g., warning areas and traffic areas). For example, in areas that require warnings or driver attention, such as crosswalks, in front of schools, and around corners, using only general traffic lighting (e.g., yellow light) does not achieve a sufficient warning effect. In addition, conventional lighting devices and systems lack differentiated design and mechanism adjustment for each area, making it impossible to individually position or optimize light sources for areas with different road uses or risk levels.

[0003] After extensive research, the inventors discovered that the above objectives could be achieved by adopting the following configurations of road dual color temperature street lighting system and dual color temperature street lighting fixture, and thus completed the present invention.

[0004] The present invention has been made in light of these circumstances, and its purpose is to provide a road dual color temperature road lighting system and a dual color temperature road lighting fixture that can effectively improve the safety of the road environment and reduce the traffic accident rate. Summary of the Invention [Means for solving the problem]

[0005] To achieve the above object, one embodiment of the present invention provides a dual color temperature roadway lighting system including a plurality of first roadway lights and a plurality of second roadway lights. The first roadway lights are installed in a warning area of ​​the road, and a first light source module is installed inside each of the first roadway lights, and the color temperature of the first light source module is a first color temperature. The second roadway lights are installed in a normal area of ​​the road, and a second light source module is installed inside each of the second roadway lights, and the color temperature of the second light source module is a second color temperature. The normal area is adjacent to the warning area, and the installation positions of the normal area and the warning area are such that, relative to the traveling direction of a vehicle traveling on the road, the vehicle travels from the normal area toward the warning area, and the first color temperature is higher than the second color temperature.

[0006] In a preferred embodiment of the present invention, the first color temperature is in the range between 4500K and 6500K, and the second color temperature is in the range between 2700K and 3500K.

[0007] To solve the above-mentioned problems and achieve the above object, another embodiment of the present invention provides a dual color temperature roadway lighting fixture, comprising a roadway light body, a first light source module, a second light source module, and a control device. The first light source module is installed in the roadway light body and has a first color temperature. The second light source module is installed in the roadway light body and has a second color temperature. The second color temperature is higher than the first color temperature. The control device is electrically connected to the first light source module 111 and the second light source module 121, and switches the light source output states of the first light source module 111 and the second light source module 121 based on a control condition. When the control condition is switched to a state in which the first light source module is activated, the dual color temperature roadway lighting fixture functions as a first road light. When the control condition is switched to a state in which the second light source module is activated, the dual color temperature roadway lighting fixture functions as a second road light, and adjusts the first and second color temperatures.

[0008] In a preferred embodiment of the present invention, the control conditions include a timetable, environmental observation data, user-set instructions, remote control signals, or a combination thereof.

[0009] In a preferred embodiment of the present invention, the environmental observation data is ambient light observation data or climate observation data, and the control device controls the first light source module and the second light source module of the dual color temperature roadway lighting fixture according to the ambient light observation data or climate observation data.

[0010] In a preferred embodiment of the present invention, the road dual color temperature street lighting system further includes a communication module electrically connected to the control device. The control device transmits data to an external remote management platform via the communication module, and the control device receives remote control signals or uploads road light status information of the dual color temperature road light fixtures. The road light status information includes at least a first color temperature and a second color temperature.

[0011] In a preferred embodiment of the present invention, the control device is a programmable logic controller, a microcontroller, or an edge computing module. [Effects of the Invention]

[0012] The present invention is configured as described above and has the following advantages. As described above, the dual color temperature roadway lighting system and dual color temperature roadway lighting fixtures of the present invention are based on the theory of visual physiology, and install white light roadway lights with a high color temperature in warning areas of the road (e.g., intersections) and yellow light roadway lights with a low color temperature in normal areas of the road (e.g., road sections other than the warning areas). By installing roadway lights with different color temperatures, the present invention creates a color deviation in the driver's vision, allowing drivers to concentrate on driving when approaching warning areas and making pedestrians more visible when they are passing by on the road, thereby increasing the flexibility and ergonomic compatibility of roadway lighting and making it suitable for roadway lighting installation in various smart cities.

[0013] Other objects, configurations and effects of the present invention will become apparent from the following detailed description of the preferred embodiments of the present invention. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic diagram of a dual color temperature roadway lighting system according to a first embodiment of the present invention; [Figure 2] 2 is a schematic diagram of a dual color temperature roadway lighting system according to a second embodiment of the present invention; [Figure 3] 1 is a schematic diagram of a dual color temperature street light fixture according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0015] The following describes in detail the embodiments of the present invention. However, the present invention is not limited to these, and various modifications are possible within the scope of the description. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. For the sake of convenience, components having the same functions as those described in the above embodiments are designated by the same reference numerals, and their descriptions will not be repeated.

[0016] In this specification, a "warning area" is typically an area where traffic flow is likely to be disrupted, and includes specific road sections along a vehicle's travel path that are potentially dangerous or warning areas. "Warning areas" may also include areas requiring enhanced warning, such as intersections, areas in front of pedestrian crossings, highway entrances, curve entrances, and school routes. In the embodiments of the present invention, a "normal area" refers to a road section outside the "warning area," which is typically safe for vehicles and is also called a general road. The normal area is further subdivided into straight road sections, maneuver preparation sections, etc., and its design can be adjusted according to needs. Unless otherwise specified, the "road area" in this specification includes both "warning areas" and "normal areas."

[0017] (First Example) FIG. 1 is a schematic diagram of a dual color temperature roadway lighting system according to a first embodiment of the present invention. As shown in FIG. 1, a road area includes a warning area A and a normal area B. The dual color temperature roadway lighting system 1 according to the present invention includes a plurality of first roadway lights 11 and a plurality of second roadway lights 12. The plurality of first roadway lights 11 are installed in the warning area A of the road. Each first roadway light 11 is equipped with a first light source module 111, which has a first color temperature. The plurality of second roadway lights 12 are installed in the normal area B of the road. Each second roadway light 12 is equipped with a second light source module 121, which has a second color temperature. The normal area B is adjacent to the warning area A. The installation positions of the normal area B and the warning area A of the road are such that, relative to the traveling direction of a vehicle traveling on the road, the vehicle travels from the normal area B toward the warning area A, and the first color temperature is higher than the second color temperature.

[0018] In this embodiment, the first color temperature is in the range between 4500K and 6500K, so that the first street light 11 emits a white light source. The second color temperature is preferably in the range between 2700K and 3500K, so that the second street light 12 emits a yellow light source.

[0019] For example, according to traffic accident statistics in Taiwan, the current road accident rate is 60%. To improve this situation, general improvement goals have all focused on adjusting signs, road markings, traffic signals, and roadway patterns. However, the lighting environment of roadway lights and their impact on driving safety are completely ignored. The dual-color temperature roadway lighting system 1 of the present invention can effectively improve lighting quality and warning capability by modifying the light color of roadway lights from the road section to the junction. The color deviation allows drivers to concentrate on driving when approaching warning area A, effectively reducing the accident rate in warning area A and ensuring pedestrian safety. Pedestrian safety can also be further ensured by further combining roadway pattern adjustments, traffic signals, road markings, and sign improvements.

[0020] The dual color temperature roadway lighting system 1, which combines comfort and warning effects, of the present invention is based on the characteristics of human vision and the spectral characteristics of the light source, and by arranging light sources with corresponding color temperatures, especially when the user crosses different areas, it optimizes the driver's nighttime visibility and psychological state, and further improves the overall safety of driving and pedestrians. Here, we first explain the ergonomic impact of selecting the color temperature of the light source for warning area A. (1) The structure of the human eyeball has photoreceptor cells in the retina, which include cone cells and rod cells. Cone cells are mainly active in bright daytime conditions, usually when the ambient luminance is 3 cd / m 2 If the vision is above 555 nm, it is called photopic vision, and is usually highly sensitive to wavelengths around 555 nm (yellow-green light). Rod cells work in low light conditions at night, and usually when the environmental luminance is 1 -3 cd / m 2 If the visual field is less than this, it is called scotopic vision, and the eye is usually most sensitive to wavelengths around 507 nm (blue-green light). (2) The ratio of luminous flux generated by a light source under scotopic and photopic conditions is called the S / P ratio (Scotopic / Photopic Ratio), and is an index used to evaluate the practicality of a light source in low-light environments. The higher the S / P ratio, the more the human eye's pupils constrict, reducing the penetration of anomalous light rays. This significantly improves visual resolution and depth of field, improving nighttime route observation. Conversely, the lower the S / P ratio, the more the human eye's pupils expand, allowing anomalous light rays to penetrate, affecting vision and resulting in scattering and blurring. Therefore, to accommodate the visual characteristics of the human eye in scotopic mode, first roadway lights 11 with a color temperature ranging from 4500K to 6500K are installed in warning area A. This allows for better adaptation to the sensitivity of scotopic vision at night, effectively enhancing visual clarity and improving the safety of drivers and pedestrians.

[0021] Furthermore, ergonomic considerations regarding the placement of color temperatures in the normal area B of the road are described. (1) The color temperature characteristics of a light source not only affect human visual ability, but also have a significant impact on the psychological and physiological state of the driver. In a white light environment with a high color temperature, the S / P ratio increases, strengthening the visual guidance ability and input / output. However, prolonged exposure to high-brightness and stimulating lighting conditions can cause visual fatigue, increase psychological pressure, and reduce driving stability. (2) In this invention, the second road light 12 with a color temperature ranging from 2700K to 3500K is installed in the normal area B. For drivers, the yellow light environment can provide a soft and stable lighting effect, and is also comfortable for the human eye when viewed for long periods of time, reducing driving fatigue and improving the stability and safety of nighttime driving. In addition, the wavelength of yellow light has favorable diffraction properties, providing favorable road condition identification qualities even in rainy or smoggy weather, effectively improving the driver's ability to see road conditions even in reduced visibility environments.

[0022] In summary, the dual color temperature roadway lighting system 1 of the present invention significantly improves the visual safety of drivers and pedestrians in nighttime environments and effectively reduces the risk of traffic accidents by arranging a first roadway light 11 with a white light source of a first color temperature in a warning area A (e.g., an intersection, a pedestrian crossing, a warning area, or other area requiring enhanced nighttime visibility). A second roadway light 12 with a yellow light source of a second color temperature is arranged in a normal area B (e.g., a major highway or long-distance road), providing a stable visual environment that makes driving more comfortable and alleviates visual fatigue and psychological stress. For example, as shown in FIG. 1, the color deviations produced by roadway lights with different color temperatures at the intersection in warning area A and the adjacent normal area B allow the human eye to distinguish the difference in brightness. From a traffic perspective, in addition to providing active management effects, this system can also supplement areas where signals are insufficient, actively improving road safety and reducing the number of accidents in warning zone A and normal zone B, further ensuring pedestrian safety and realizing people-oriented traffic. The layout design of the dual color temperature roadway lighting system 1 described above creates color deviations in drivers' vision, further improving their ability to recognize pedestrians on crosswalks when approaching the road and further ensuring the safety of pedestrians crossing the road. This effectively reduces traffic accident rates and meets four key performance indicators of roadway lighting: safety (enhancing order), comfort (preventing visual fatigue), attention (enhancing vigilance), and danger prevention (enhancing the display of danger areas), achieving an overall ergonomic roadway lighting standard.

[0023] (Second Example) FIG. 2 is a schematic diagram of a dual color temperature roadway lighting system according to a second embodiment of the present invention. This embodiment differs from the first embodiment in that the road area includes warning areas A1 and A2. Since the other components are the same as those described above, the description thereof will not be repeated. In this embodiment, a plurality of first roadway lights 11 are installed in the warning areas A1 and A2, and a plurality of second roadway lights 12 are installed in the normal area B. The warning area A1 is the intersection area of ​​the intersection and includes the pedestrian crossing. The warning area A2 is the area included in the "side connecting road" and the main highway to which it is connected. The normal area B is the entire area outside the warning areas A1 and A2. Although FIG. 2 only shows a rough outline, the present invention is not limited thereto.

[0024] "Side access roads" are typically considered high-risk areas in the traffic design field because they connect to major arterial roads. When a driver is traveling at high speed on a major arterial road, blind spots are likely to occur at side entrances and exits (e.g., alleys and forks). If a vehicle or pedestrian suddenly appears in the driver's field of vision from the side road, the driver's line of sight may be obstructed, resulting in an accident due to a delayed reaction. In general, areas where "side access roads" connect to major arterial roads often lack sufficient lighting or reflecting equipment, making it even more difficult to identify traffic at night. Drivers typically focus their attention primarily on the main road ahead at night, reducing their vigilance for vehicles coming from alleys and road conditions. This results in slower reactions to lateral dynamics (e.g., vehicles or pedestrians on forks), increasing risk.

[0025] In this embodiment, based on the aforementioned human visual characteristics and light source spectral characteristics, the multiple first roadway lights 11 installed in the warning area A1 and the warning area A2 emit white light with a first color temperature, effectively increasing the attention and vigilance of drivers and pedestrians and providing an enhanced warning effect on the road area. Furthermore, the multiple second roadway lights 12 installed in the normal area B emit yellow light with a second color temperature, reducing visual fatigue during long driving periods and providing visual and psychological comfort that is suited to the human eye. The first color temperature is in the range of 4500K to 6500K, and the second color temperature is in the range of 2700K to 3500K. Therefore, the dual color temperature roadway light system 1 according to the present invention combines roadway lighting safety, functionality, and accident prevention, and is applicable to fields such as dynamic lighting management and smart lighting.

[0026] FIG. 3 is a schematic diagram of a dual color temperature street lighting fixture 10 according to one embodiment of the present invention. As shown in FIG. 3, the dual color temperature street lighting fixture 10 includes a street light body 10', a first light source module 111, a second light source module 121, a control device 40, a light sensor module 50, a weather observation module 60, and a communication module 70. The first light source module 111 is installed in the street light body 10' and has a first color temperature. The second light source module 121 is installed in the street light body 10' and has a second color temperature. The second color temperature is higher than the first color temperature. The control device 40 is electrically connected to the first light source module 111 and the second light source module 121. The control device 40 switches the light output states of the first light source module 111 and the second light source module 121 based on a control condition. When the control condition is switched to a state in which the first light source module 111 is activated, the dual color temperature roadway lighting fixture 10 serves as the first roadway light, and when the control condition is switched to a state in which the second light source module 121 is activated, the dual color temperature roadway lighting fixture 10 serves as the second roadway light, and adjusts the first and second color temperatures. The control device 40 is a programmable logic controller, a microcontroller, or an edge computing module, and the control condition includes a timetable, environmental observation data, user-set commands, a remote control signal, or a combination thereof. The environmental observation data is ambient light observation data or climate observation data, and the control device 40 controls the first light source module 111 and the second light source module 121 of the dual color temperature roadway lighting fixture 10 based on the ambient light observation data or climate observation data.

[0027] In another embodiment, the dual color temperature roadway lighting fixture 10 can be connected to an external light sensor module and weather observation module. The light sensor module detects environmental brightness within a predetermined range of the dual color temperature roadway lighting fixture 10 and generates environmental light observation data. The weather observation module detects changes in heavy fog, rain, or humidity within a predetermined range of the dual color temperature roadway lighting fixture 10 and generates corresponding weather observation data. Thus, the dual color temperature roadway lighting fixture 10 receives environmental data from the external light sensor module and weather observation module, and the control device 40 determines the environmental conditions and controls the first light source module 111 and the second light source module 121 based on the environmental conditions. The communication module 70 is electrically connected to the control device 40, and the control device 40 transmits data to an external remote management platform via the communication module 70. The control device 40 receives remote control signals or uploads roadway light status information of the dual color temperature roadway lighting fixture 10, where the roadway light status information includes at least the first and second color temperatures. Two-way communication can be achieved between the dual color temperature street light fixture 10 and the remote management platform, and the dual color temperature street light fixture 10 actively returns its real-time status to the remote management platform, which then remotely monitors and controls the dual color temperature street light fixture 10. The dual color temperature street light fixture 10 can return a fault signal, allowing the remote management platform to actively detect and determine street light fault information and immediately send a notification to dispatch personnel for repair. Compared with traditional street lights that require manual inspections or citizen notification, this significantly reduces repair time and improves efficiency.

[0028] In this way, the dual color temperature roadway lighting system 1 and dual color temperature roadway lighting fixture 10 of the present invention use the arrangement of light sources with different color temperatures and a smart control mechanism to dynamically adjust the lighting mode based on environmental conditions or usage situations, thereby improving driving and public safety. In addition, by integrating them into smart city lighting systems, they can also achieve remote monitoring and energy-saving management functions.

[0029] In summary, the dual color temperature roadway lighting system and dual color temperature roadway lighting fixtures of the present invention utilize roadway lighting with corresponding color temperatures in different road areas based on factors such as human visual characteristics, light source characteristics, and road usage patterns, thereby achieving both hazard prevention and visual comfort. High-color temperature white light roadway lighting is used in warning area A, which is hazardous, to effectively improve line-of-sight warning and increase driver and pedestrian attention. Low-color temperature yellow light roadway lighting is used in normal area B, where traffic is stable, to provide comfort and prevent danger. More specifically, the dual color temperature roadway lighting fixtures of the present invention dynamically adjust lighting conditions based on environmental brightness and weather changes, improving lighting efficiency and management responsiveness. Overall, the present invention not only reduces traffic accident rates and improves pedestrian visibility and driver responsiveness, but also contributes to the development of energy-saving management and intelligent roadway lighting, fully realizing the concepts of people-oriented transportation and intelligent design.

[0030] The present embodiment has been described above, but the above-described embodiment merely illustrates some of the application examples of the present invention, and is not intended to limit the technical scope of the present invention to the specific configurations of the above-described embodiment. [Explanation of symbols]

[0031] 1 Road dual color temperature road lighting system A warning area A1 Warning area A2 warning area B Normal area 10 Dual Color Temperature Roadway Light Fixtures 10' road light body 11 1st road light 111 First light source module 12 Second road light 121 Second light source module 40 Control device 70 Communication Module

Claims

1. a plurality of first road lights installed in a warning area of ​​a road, each of the first road lights having a first light source module installed therein, the color temperature of the first light source module being a first color temperature; a plurality of second street lights installed in a normal area of ​​the road, wherein a second light source module is installed inside each of the second street lights, and the color temperature of the second light source module is a second color temperature; a first color temperature higher than the second color temperature; a second color temperature higher than the first color temperature; a first color temperature higher than the second color temperature; a second color temperature higher than the first color temperature; a first color temperature higher than the second color temperature; a second color temperature higher than the first color temperature; a first color temperature higher than the second color temperature; a second color temperature higher than the first color temperature; a second color temperature higher than the first color temperature; a third color temperature higher than the first color temperature; a fourth color temperature higher than the first color temperature; a fourth color temperature higher than the first color temperature; a fourth color temperature higher than the first color temperature; a fourth color temperature higher than the first color temperature; a fifth color temperature higher than the second color temperature; a fifth ... sixth color temperature higher than the second color temperature; a sixth

2. The road dual color temperature street light system according to claim 1, wherein the first color temperature ranges from 4500K to 6500K.

3. The road dual color temperature street light system according to claim 1, wherein the second color temperature ranges between 2700K and 3500K.

4. A dual color temperature roadway lighting fixture, The road light itself, a first light source module installed in the street light body and having a first color temperature; a second light source module installed in the street light body and having a second color temperature, the second color temperature being higher than the first color temperature; a control device electrically connected to the first light source module and the second light source module, the control device switching between the first color temperature and the second color temperature by switching the light source output states of the first light source module and the second light source module based on a control condition, and setting the dual color temperature road lighting fixture as a first road light when the first light source module is switched to a state where it is activated, and setting the dual color temperature road lighting fixture as a second road light when the second light source module is switched to a state where it is activated.

5. The dual color temperature roadway lighting fixture according to claim 4 , wherein the control conditions include a timetable, environmental observation data, user-set instructions, remote control signals, or a combination thereof.

6. 6. The dual color temperature roadway lighting fixture according to claim 5, wherein the environmental observation data is ambient light observation data or climate observation data, and the control device controls the first light source module and the second light source module of the dual color temperature roadway lighting fixture based on the ambient light observation data or the climate observation data.

7. 5. The dual color temperature street lighting fixture according to claim 4, further comprising a communication module electrically connected to the control device, wherein the control device transmits data to an external remote management platform through the communication module, and the control device receives a remote control signal or uploads street light status information of the dual color temperature street lighting fixture, the street light status information including at least the first color temperature and the second color temperature.

8. The dual color temperature roadway lighting fixture according to claim 4 , wherein the control device is a programmable logic controller, a microcontroller, or an edge computing module.

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