Micro front light road lighting module and road lighting lamp

Abstract

The utility model relates to the technical field of road illumination, in particular to a micro-front-light road illumination module and a road illumination lamp, the micro-front-light road illumination module comprises a light source, the light source is used for emitting light, the emergent light of the light source has a plurality of emergent angles in the plane direction of C0-C180 degrees, and the light source is used for emitting light; the emergent light of the light source is located between a first emergent angle and a second emergent angle in the plane direction of C0-C180 degrees, the first emergent angle is between-90 degrees and 0 degree, the second emergent angle is between 0 degree and 90 degrees, the first emergent angle and the second emergent angle are not equal to 0 degree, and the first emergent angle is larger than the second emergent angle. The included angle between the first emergent angle and the 0-degree position is smaller than the included angle between the second emergent angle and the 0-degree position. The first emergent angle theta1 is set to be smaller than or equal to 60 degrees, and the second emergent angle theta2 is set to be 75-80 degrees, so that asymmetric micro front light illumination is realized, shadows and glare are reduced, and the visibility and the contrast ratio on a road are improved.

Description

Technical Field

[0001] The invention relates to the technical field of road lighting, and in particular to a micro-direct light road lighting module and a road lighting lamp. Background Art

[0002] With the development of modern urban construction, lighting has become an important part of urban and road network construction, and lighting electricity consumption accounts for more than 10% of the total social electricity consumption. At present, efficient and energy-saving LED lighting technology has been rapidly developed as a clean energy source, and has been widely used and recognized in road lighting.

[0003] At present, the common lighting design of road lighting fixtures is bat-shaped lighting or lighting according to North American standards. This kind of design has symmetrical light distribution along the direction of vehicle travel, which can achieve uniform distribution. However, the existing road lighting has a large glare, which is easy to cause glare. The glare caused by lamps refers to the phenomenon that the brightness distribution or brightness range of light is inappropriate in the field of vision, or the brightness contrast in space and time is very different, which causes eye discomfort or reduces observation ability. At present, the glare of road lighting is relatively large and dazzling. Drivers do not have a good experience on the road, and are prone to visual fatigue and traffic accidents. Summary of the invention

[0004] The object of the present invention is to provide a micro-front light road lighting module and a road lighting lamp to at least solve one of the problems raised in the above background technology.

[0005] The technical solution of the present invention is:

[0006] A micro-front light road lighting module, comprising:

[0007] A light source, the light source is used to emit light, the emergent light of the light source has multiple emergent angles in the C0°-C180° plane direction, the emergent light of the light source is located between a first emergent angle and a second emergent angle in the C0°-C180° plane direction, the first emergent angle is located between -90° and 0°, the second emergent angle is located between 0° and 90°, both the first emergent angle and the second emergent angle are not equal to 0°, and the angle between the first emergent angle and the 0° position is smaller than the angle between the second emergent angle and the 0° position, so that the light source becomes an asymmetric light distribution in the C0°-C180° plane direction.

[0008] Furthermore, the first emission angle is ≤60°, and the second emission angle is 75°-80°.

[0009] Furthermore, the lighting module is used for road lighting, the C0°-C180° plane direction of the light source is parallel to the vehicle's traveling direction, the first emission angle is located in the backlight direction of the light source relative to the vehicle's traveling direction, and the second emission angle is located in the frontlight direction of the light source relative to the vehicle's traveling direction.

[0010] Furthermore, when the light source is irradiated onto the road, part of the road surface is illuminated, and the illuminated area includes an area in the opposite direction and an area in the same direction. The light emitted by the light source in the C0°-C180° plane direction between a first emission angle and 0° illuminates the area in the opposite direction, and the light emitted by the light source in the C0°-C180° plane direction between 0° and a second emission angle illuminates the area in the same direction.

[0011] Furthermore, a lens is provided on the light emitting surface of the light source, and the lens projects the light emitted by the light source.

[0012] Furthermore, the lens includes a light incident surface and a light emitting surface.

[0013] Furthermore, the outgoing light emitted by the light source is deflected at a certain angle through the light incident surface of the lens and transmitted into the lens, and the light exiting surface of the lens deflects the transmitted light at a certain angle and transmits it out, and the lens can produce different refraction angles for the outgoing light emitted by the light source.

[0014] Furthermore, the outgoing light emitted from the lens is located between the first outgoing angle and the second outgoing angle in the C0°-C180° plane direction.

[0015] Furthermore, the lens is a glass lens module.

[0016] The present invention also provides a road lighting lamp, which comprises a bracket, a lamp is connected to the upper end of the bracket, and the lamp comprises the above-mentioned lighting module.

[0017] The present invention provides a micro-light road lighting module and a road lighting lamp through improvement, which have at least the following improvements and beneficial effects compared with the prior art:

[0018] The present invention sets the first emission angle θ1 to be less than or equal to 60° and the second emission angle θ2 to be 75°-80°, so that the light emitted by the light source is projected onto the road surface in a specific direction, thereby realizing asymmetric micro-front lighting. Asymmetric light distribution can accurately project light onto the road, reduce shadows and glare, and improve visibility and contrast on the road. This helps drivers and pedestrians see the road conditions more clearly and increases the safety of driving at night. Especially in complex sections such as curved roads or intersections, asymmetric light distribution can provide better lighting effects, reduce visual blind spots, and reduce the risk of traffic accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 is a partial ray tracing diagram of the micro-front lighting module according to an embodiment of the present invention;

[0022] Figure 3 is a ray tracing diagram of another part of the micro-front lighting module according to an embodiment of the present invention;

[0023] Figure 4 is a light distribution curve when the micro-front lighting module according to an embodiment of the present invention is installed on the left side of the road in the direction of travel of the vehicle;

[0024] Figure 5 is a light distribution curve when the micro-front lighting module according to an embodiment of the present invention is installed on the right side of the road in the direction of travel of the vehicle;

[0025] Figure 6 is a diagram showing the analysis results of the illumination distribution and road surface brightness distribution of the micro-front light road lighting module according to the embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of light trajectories of the micro-front lighting module according to an embodiment of the present invention;

[0027] Figure 8 It is a schematic diagram of light trajectories at another angle of the micro-front lighting module described in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Light source; 2. Lens; θ1, first emission angle; θ2, second emission angle; S1, area in the opposite direction of vehicle travel; S2, area in the same direction of vehicle travel. DETAILED DESCRIPTION

[0030] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are described clearly and completely.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, the meaning of "several" is one or more, the meaning of "many" is two or more, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number. It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0033] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] At present, the common lighting design of road lighting fixtures is bat-shaped lighting or lighting according to North American standards. This kind of design has symmetrical light distribution along the direction of the vehicle, which can achieve uniform distribution. However, the existing road lighting has large glare, which is easy to cause glare. The glare caused by lamps refers to the phenomenon that the brightness distribution or brightness range of light in the field of vision is inappropriate, or the brightness contrast in space and time is very different, which causes eye discomfort or reduces observation ability. At present, road lighting is relatively dazzling, and drivers do not have a good experience on the road. It is also easy to cause visual fatigue and traffic accidents.

[0036] The present invention provides a micro-light road lighting module and a road lighting lamp through improvement. The technical solution of the present invention is:

[0037] like Figure 1 As shown,

[0038] A micro-front light road lighting module, comprising:

[0039] A light source 1, wherein the light source 1 is used for emitting light, and the emitted light of the light source 1 has multiple emission angles in the C0°-C180° plane direction, and the emitted light of the light source 1 is located between a first emission angle θ1 and a second emission angle θ2 in the C0°-C180° plane direction, the first emission angle θ1 is located between -90° and 0°, the second emission angle θ2 is located between 0° and 90°, the first emission angle θ1 and the second emission angle θ2 are both not equal to 0°, and the angle between the first emission angle θ1 and the 0° position is smaller than the angle between the second emission angle θ2 and the 0° position, so that the light source 1 becomes an asymmetric light distribution in the C0°-C180° plane direction.

[0040] Asymmetric light distribution can accurately project light onto the road, reduce shadows and glare, and improve visibility and contrast on the road. It helps drivers and pedestrians see road conditions more clearly and increases safety when driving at night. Especially on complex roads such as curved roads or intersections, asymmetric light distribution can provide better lighting effects, reduce visual blind spots, and reduce the risk of traffic accidents.

[0041] Preferably, the first emergent angle θ1 ≤ 60°, and correspondingly, the included angle between the first emergent angle θ1 and the 0° position is greater than or equal to 30°.

[0042] Preferably, the second emergent angle θ2 is 75°-80°, and correspondingly, the included angle between the second emergent angle θ2 and the 0° position is 10°-25°.

[0043] By setting the first emission angle θ1 to be less than or equal to 60° and the second emission angle θ2 to be 75°-80°, the light distribution curve emitted by the light source 1 of the micro-front light road lighting module provided by the embodiment of the present invention can form an asymmetric light type in the left and right directions. The light distribution intensity in the direction of oncoming vehicles is weaker to avoid direct glare, while the light distribution intensity in the non-oncoming direction is stronger to maintain the consistency of the backscattering direction and intensity of the light when it contacts the road surface. In this way, a high-uniform brightness road surface viewed from the driver's perspective can be designed, which directly meets the actual needs of users, improves the driver's comfort, and improves driving safety.

[0044] Furthermore, the lighting module is used for road lighting, the C0°-C180° plane direction of the light source 1 is parallel to the direction of vehicle travel, the first emission angle θ1 is located in the backlight direction of the light source 1 relative to the direction of vehicle travel, and the second emission angle θ2 is located in the frontlight direction of the light source 1 relative to the direction of vehicle travel.

[0045] In some embodiments of the present invention, Figure 1As shown, the light source 1 shines on the road, and part of the road surface is illuminated. The illuminated areas include the reverse direction area S1 and the forward direction area S2. The light emitted by the light source 1 in the plane direction C0°-C180° between the first emission angle θ1 and 0° illuminates the reverse direction area S1, and the light emitted by the light source 1 in the plane direction C0°-C180° between 0° and the second emission angle θ2 illuminates the forward direction area S2. The reverse direction area S1 is the reverse light direction relative to the vehicle's travel direction, and the forward direction area S2 is the forward light direction relative to the vehicle's travel direction. It can be widely used in scenes such as ordinary roads, high-speed tunnels, and sound barriers.

[0046] In some embodiments of the present invention, Figure 2 and Figure 3 is a ray tracing diagram of the micro-front lighting module of the embodiment of the present invention; it can be seen from the diagram that when a vehicle passes through the micro-front lighting module of the embodiment of the present invention, the light beam will not directly enter the driver's eyes, and will not cause glare, thereby increasing driving safety and facilitating safe driving. Since the first emission angle θ1 is set to be less than or equal to 60°, and the second emission angle θ2 is set to be 75°-80°, as Figure 2 and Figure 3 As shown, when the driver passes through q1, q2, q3, q4 or q5, the light reflected by the ground from the micro-lighting module of the embodiment of the present invention will not directly enter the driver's eyes, but at a certain angle, and the brightness of the reflected light is not high, and the light intensity entering the driver's eyes is very weak, and the driver's eyes do not need to adapt to excessive brightness changes, reducing the possibility of eye fatigue. The driver can more accurately judge the situation of the road ahead and obstacles, and is less likely to have a car accident.

[0047] In some embodiments of the present invention, a lens 2 is provided on the light emitting surface of the light source 1, and the lens 2 projects the light emitted by the light source 1. The lens 2 includes a light incident surface and a light exiting surface. The outgoing light emitted by the light source 1 is deflected at a certain angle through the light incident surface of the lens 2 and transmitted into the lens 2, and the light exiting surface of the lens 2 deflects and transmits the transmitted light out at a certain angle, and the lens 2 can produce different refraction angles for the outgoing light emitted by the light source 1.

[0048] Furthermore, the light emitted from the lens 2 is located between the first emission angle θ1 and the second emission angle θ2 in the C0°-C180° plane direction. In summary, the micro-front light road lighting module of the present invention can deflect almost all the light emitted by the light source 1 therein to one direction, so that the backlight flux is extremely small, reducing the illumination received by the road obstacles, so as to achieve the effect of improving the brightness contrast between the tunnel environment and the road obstacle surface. Figure 4 and Figure 5 As shown, Figure 4 is a light distribution curve when the micro-front lighting module according to an embodiment of the present invention is installed on the left side of the road in the direction of travel of the vehicle; Figure 5 is the light distribution curve of the micro-front lighting module of the embodiment of the present invention when it is installed on the right side of the road in the direction of vehicle travel. Figure 4 and Figure 5 As shown in the figure, the light intensity distribution of the light source 1 at various angles in the C0°-C180° plane direction and the C90°-C270° plane direction can be seen. The micro-direction road lighting module of the embodiment of the invention can ensure that the road surface far away from the light source 1 also has sufficient light intensity, and realize the light distribution curve required by different lighting areas. The light distribution effect is good and the illumination uniformity in the lighting area is met.

[0049] Can rely on Figure 4 as well as Figure 5 The asymmetric light distribution curve is shown, and the light source 1 is designed to have the required asymmetric light type. In addition, the light source 1 can also be used in conjunction with the lens 2 mentioned above, and the light source 1 and the lens 2 can superimpose light energy to enhance the required asymmetric light intensity. Preferably, the lens 2 is a glass lens 2 module.

[0050] In some embodiments, the micro-front light road lighting module of the present invention is used to perform computer simulation and photometric analysis. Figure 6 This is a diagram showing the analysis results of the illumination distribution and road surface luminance distribution of the micro-front light road lighting module according to an embodiment of the present invention. Figure 7 is a schematic diagram of light trajectories of the micro-front lighting module according to an embodiment of the present invention; Figure 8 FIG. 1 is a schematic diagram of the light trajectory of the micro-front lighting module at another angle according to an embodiment of the present invention. The final road lighting effect of the micro-front lighting module according to an embodiment of the present invention is as follows: Figure 6 As shown, it can be seen from the figure that when the illumination uniformity, U0 and UI are all up to standard, TI is only 10% of the standard limit of 10. It can fully meet the illumination and brightness uniformity requirements specified in the national urban road lighting design standards. As can be seen from the figure, the analysis results of the road surface brightness distribution and illumination distribution of the micro-front-light road lighting module described in the embodiment of the present invention meet the illumination and brightness uniformity requirements specified in the national urban road lighting design standards. The micro-front-light road lighting module described in the embodiment of the present invention has low glare, high uniformity, and a large height-to-distance ratio. The light can be more evenly distributed in the reverse direction area S1 and the forward direction area S2, reducing shadows and light-dark contrast, improving visual comfort, and solving the problem of street lamp glare.

[0051] The embodiment of the present invention also provides a road lighting lamp, the road lighting lamp comprises a bracket, the upper end of the bracket is connected to a lamp, and the lamp comprises the lighting module described in the above embodiment. Since the road lighting lamp of the embodiment of the present invention adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0052] In this embodiment, by setting the first emission angle θ1 to be less than or equal to 60° and the second emission angle θ2 to be 75°-80°, the light emitted by the light source 1 is projected onto the road surface in a specific direction, thereby achieving asymmetric micro-front lighting. Asymmetric light distribution can accurately project light onto the road, reduce shadows and glare, and improve visibility and contrast on the road. This helps drivers and pedestrians see the road conditions more clearly and increases the safety of driving at night. Especially in complex sections such as curved roads or intersections, asymmetric light distribution can provide better lighting effects, reduce visual blind spots, and reduce the risk of traffic accidents.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A micro-front light road lighting module, characterized in that: include: A light source, the light source is used to emit light, the emergent light of the light source has multiple emergent angles in the C0°-C180° plane direction, the emergent light of the light source is located between a first emergent angle and a second emergent angle in the C0°-C180° plane direction, the first emergent angle is located between -90° and 0°, the second emergent angle is located between 0° and 90°, both the first emergent angle and the second emergent angle are not equal to 0°, and the angle between the first emergent angle and the 0° position is smaller than the angle between the second emergent angle and the 0° position, so that the light source becomes an asymmetric light distribution in the C0°-C180° plane direction.

2. The micro-front light road lighting module according to claim 1, characterized in that: The first emission angle is ≤60°, and the second emission angle is 75°-80°.

3. The micro-front light road lighting module according to claim 2, characterized in that: The lighting module is used for road lighting, the C0°-C180° plane direction of the light source is parallel to the vehicle travel direction, the first emission angle is located in the backlight direction of the light source relative to the vehicle travel direction, and the second emission angle is located in the frontlight direction of the light source relative to the vehicle travel direction.

4. The micro-front light road lighting module according to claim 3, characterized in that: The light source is irradiated onto the road, and part of the road surface is illuminated, and the illuminated area includes an area in the opposite direction and an area in the same direction. The light emitted by the light source in the C0°-C180° plane direction between the first emission angle and 0° illuminates the area in the opposite direction, and the light emitted by the light source in the C0°-C180° plane direction between 0° and the second emission angle illuminates the area in the same direction.

5. The micro-front light road lighting module according to claim 3, characterized in that: A lens is disposed on the light emitting surface of the light source, and the lens projects the light emitted by the light source.

6. The micro-front light road lighting module according to claim 5, characterized in that: The lens comprises a light incident surface and a light emitting surface.

7. The micro-front light road lighting module according to claim 6, characterized in that: The outgoing light emitted by the light source is deflected at a certain angle through the light incident surface of the lens and transmitted into the lens, and the light exiting surface of the lens deflects the transmitted light at a certain angle and transmits it out. The lens can produce different refraction angles for the outgoing light emitted by the light source.

8. The micro-front light road lighting module according to claim 7, characterized in that: The outgoing light emitted from the lens is located between the first outgoing angle and the second outgoing angle in the C0°-C180° plane direction.

9. The micro-front light road lighting module according to claim 5, characterized in that: The lens is a glass lens module.

10. A road lighting lamp, characterized in that: The road lighting lamp comprises a bracket, the upper end of the bracket is connected to a lamp, and the lamp comprises the lighting module according to any one of claims 1-9.

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