Low-elevation wide-angle projection lighting device

Abstract

A low-elevation wide-angle projection lighting device is disclosed, comprising a light source, a reflector, and a support. The reflector is configured with multiple reflective surfaces at predetermined angles, enabling single-reflection optical control to project light in various directions. When mounted on installation surfaces such as the ground, walls, or ceilings, and by leveraging their natural surface roughness, the device effectively transforms vertical illumination into horizontal illumination, thereby achieving a three-dimensional lighting effect. The optical design delivers uniform and asymmetric wide-beam distribution covering long-range, short-range, lateral, and edge zones, while minimizing glare, eliminating upward light spill, and reducing light pollution. The device operates efficiently under low power input, making it suitable for both indoor and outdoor applications with eco-friendly and energy-saving advantages.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and in particular to an ultra-wide-angle lighting device below eye level. It achieves ultra-wide-angle, wide-range light distribution through innovative multi-faceted reflection optical calculations, while also possessing high illuminance uniformity, low glare characteristics, and meeting the needs of environmentally friendly lighting. Prior Technology

[0002] Currently, most floodlights used in general lighting are installed at a high position to expand the projection range using high-power light sources or special lenses. However, excessive height can lead to the following problems:

[0003] 1. Low lighting efficiency: All lighting follows the principle that the degree is inversely proportional to the square of the distance. The farther the projection distance, the more energy is required to meet the illuminance requirements. Moreover, when the light passes through a long distance of space, the microparticles and water vapor in the air will cause reflection and scattering, which will hinder the light from reaching the area to be illuminated. As a result, the ineffective light increases sharply and the effective light decreases sharply.

[0004] 2. Glare issues and visual safety: High-altitude projectors and light sources can easily shine directly into people's eyes, causing glare, visual discomfort, and even affecting driving safety; while low-altitude projectors have insufficient illumination range and can also cause serious glare problems.

[0005] 3. Light pollution diffusion: The light from ordinary spotlights may not be effectively controlled, causing light to scatter into areas that do not need illumination, affecting the surrounding environment and causing light pollution.

[0006] To address the aforementioned issues, this invention proposes an ultra-wide-angle projection device below eye level. The reflector is equipped with reflective surfaces at different optically calculated angles, effectively projecting light uniformly over a very large area. This provides excellent low-glare, wide-area illumination even at eye level, significantly reducing energy consumption and light pollution. Summary of the Invention

[0007] In view of the lack of conventional lighting fixtures and the fact that illuminance is inversely proportional to the square of distance, the main objective of this invention is to provide an ultra-wide-angle projection device below eye level, which can achieve wide-range illumination at the closest distance to the area requiring illumination and at an installation height below eye level.

[0008] A secondary objective of this invention is to provide an ultra-wide-angle projection device below eye level, which achieves near-glare-free illumination below eye level, allowing the eyes to comfortably absorb effective light, clearly identify the dynamic and static environment, and significantly reduce the disturbance of the environment by ineffective lighting.

[0009] Another objective of this invention is to provide an ultra-wide-angle projection device below eye level, which projects light fully onto the effective lighting area, meets the actual lighting needs with extremely low power consumption, and significantly reduces power waste caused by ineffective light.

[0010] The structure of this invention comprises: a light source, a reflector, and a support member; the light source is mounted on the reflector; the reflector has an outer side and an inner side; the support member allows the reflector to stand upright on a plane, and the support member provides the function of adjusting the angle of the reflector; the aforementioned reflector is similar in shape to a U-shape; the inner side of the reflector is provided with a mounting part for mounting the light source, which can generate vertical illumination light towards the ground; each side of the mounting part is provided with a two-sided reflective surface, and the two-sided reflective surfaces and the mounting part have a first reflection angle, so that the light generated by the light source is distributed in an extremely wide-angle lateral light distribution by the two-sided reflective surfaces illuminating both sides of the reflector; below the mounting part and the two-sided reflective surfaces is a... An inverted U-shaped edge reflective surface forms a second reflection angle between the aforementioned edge reflective surface and the mounting part, so that the light generated by the light source illuminates the ground at both ends of the reflector through the aforementioned edge reflective surface, providing an extremely wide-angle edge light distribution. The mounting part and the upper turns of the two side reflective surfaces form two mutually symmetrical long-distance reflective surfaces. The aforementioned long-distance reflective surfaces are composed of a first long-distance reflective area and a second long-distance reflective area, and are mutually symmetrical about the mounting area. The first long-distance reflective area and the second long-distance reflective area have a third reflection angle, so that the light generated by the light source illuminates the ground at a long distance through the aforementioned long-distance reflective surfaces, providing an extremely wide-angle light distribution.

[0011] The leading edge of the second far-distance reflective area of ​​the reflector forms a first near-distance reflective surface that controls the light pattern. The aforementioned first near-distance reflective surface and the second far-distance reflective area form a fourth reflection angle, so that the light generated by the light source is distributed forward to illuminate the ground through the aforementioned second near-distance reflective surface. The forward near-distance light distribution is connected between the light distribution on both sides of the ultra-wide-angle and the illumination light.

[0012] The reflector has a first far-range reflective area connected to two ends by a second near-range reflective surface that controls the light pattern. The second near-range reflective surface and the first far-range reflective area form a fifth reflection angle, allowing the light generated by the light source to be distributed near the ground on both sides by the first near-range reflective surface. [,] The two sides of the close-range light distribution are connected between the long-range ultra-wide-angle light distribution and the illumination light.

[0013] By illuminating the reflective surfaces inside the reflector with the aforementioned light source, a wide-area ground lighting effect is achieved.

[0014] In an embodiment of the present invention, the ultra-wide-angle light distribution generated by the long-distance reflection zone produces an illumination height lower than the height set by the reflector.

[0015] In an embodiment of the present invention, the aforementioned adjustment angle is between a depression angle of 10 degrees and an elevation angle of 10 degrees.

[0016] In the aforementioned embodiment, the long-distance ultra-wide-angle light distribution generated by the long-distance reflection zone has a beam angle of 80-89 degrees. (See Figure 8)

[0017] In the aforementioned embodiment, the extremely wide-angle light distribution generated by the two reflecting surfaces has a beam angle of 80-89 degrees. (See Figure 8)

[0018] In an embodiment of the present invention, the ratio of the height of the support member to the distance of the lighting range is 1:14 or more for forward projection and 1:12 or more for a single side projection.

[0019] Based on the above description, the features and effects of the present invention are briefly summarized as follows:

[0020] 1. Enhance wide-angle lighting effect: Multiple reflective surfaces inside the reflector can achieve wide-area lighting at a very low installation height, reducing the number of lamps and their wattage.

[0021] 2. Reduce glare: The reflective surfaces in the first and second near-field areas can modify the shape of the lighting light, making the lighting light uniform and soft from far to near.

[0022] 3. Reduced lighting fixtures and energy consumption: Since the lighting fixtures of the present invention can cover a large area with a single lamp, the spacing between the lamps can be appropriately increased, thereby reducing the number of lamps and energy consumption and improving the overall lighting efficiency.

[0023] 4. Reduced light pollution: The reflector of this invention has a main light projection height-to-distance ratio of 1:14 or higher for forward projection and 1:12 or higher for single-sided projection. In other words, if the support height is 1 meter, the main light can illuminate an area of ​​about 330 square meters or more, and the light will not scatter to areas that do not need lighting, thus reducing environmental light pollution and meeting the needs of ecological green lighting. Simple Explanation of the Diagram

[0024] Figure 1: Perspective view of the present invention.

[0025] Figure 2: Structural diagram of the reflector (I).

[0026] Figure 3: Structural diagram of the reflector (II).

[0027] Figure 4: Schematic diagram of light source reflection path (I).

[0028] Figure 5: Schematic diagram of light source reflection path (II).

[0029] Figure 6: Schematic diagram of the projection range distribution.

[0030] Figure 7: Light distribution diagram of the present invention.

[0031] Figure 8: Schematic diagram of the projected beam angle.

[0032] Figure 9 shows a second embodiment of the present invention, which illustrates a reflector without an edge reflective surface.

[0033] Figure 10 is the light distribution diagram of Figure 9.

[0034] Figures 1 to 15 are photographs of actual experiments of the present invention. Implementation

[0035] As shown in Figures 1 to 5, the ultra-wide-angle projection device below eye level of the present invention comprises: a light source 1, a reflector 2, and a support member 3.

[0036] The light source 1 is mounted on the reflector 2.

[0037] The reflector 2 has an outer side 2A and an inner side 2B.

[0038] The support member 3 is disposed on the outer side 2A of the reflector 2, and the support member 3 provides the reflector 2 to stand on the plane, and the support member 3 provides the reflector 2 to generate a fine adjustment angle, the aforementioned adjustment angle being between 10 degrees for pitch.

[0039] As shown in Figures 1 to 5, the aforementioned reflector 2 has an elliptical shape.

[0040] As shown in Figures 1 to 6, the inner side of the reflector 2 is provided with a mounting part 21 for the light source 1 to be installed, and the light source 1 can generate vertical illumination light A towards the ground.

[0041] As shown in Figures 1 to 6, the mounting part 21 is provided with a two-sided reflective surface 22 on both sides. The two-sided reflective surface 22 and the mounting part 21 have a first reflection angle θ1, so that the light generated by the light source 1 is irradiated by the two-sided reflective surfaces 22 to emit extremely wide-angle two-sided light distribution J and K on both sides of the reflector 2.

[0042] As shown in Figures 1 to 6, an inverted U-shaped edge reflective surface 23 is provided below the mounting part 21 and the two side reflective surfaces 22. The aforementioned edge reflective surface 23 and the mounting part 21 form a second reflection angle θ2, so that the light generated by the light source 1 illuminates the ground at the two ends of the reflector 2 through the aforementioned edge reflective surface 23, resulting in an extremely wide-angle edge light distribution L and M.

[0043] As shown in Figures 1 to 6, the mounting part 21 and the upper part of the two side reflective surfaces 22 form two symmetrical long-distance reflective surfaces 24. The aforementioned long-distance reflective surfaces 24 are composed of a first long-distance reflective area 241 and a second long-distance reflective area 242, and are symmetrical about the mounting part 21. The first long-distance reflective area 241 and the second long-distance reflective area 242 have a third reflection angle θ3, so that the light generated by the light source 1 illuminates the ground with a long-distance ultra-wide-angle light distribution B, C, D, E through the aforementioned long-distance reflective surfaces 24.

[0044] As shown in Figures 1 to 6, the leading edge of the second far-range reflective area 242 of the reflector 2 forms a first near-range reflective surface 25 that controls the light pattern. The first near-range reflective surface 25 and the second far-range reflective area 242 form a fourth reflection angle θ4, so that the light generated by the light source 1 illuminates the ground through the first near-range reflective surface, producing near-range light distributions G and H. The near-range light distributions G and H are connected between the far-range ultra-wide-angle light distributions B, C, D, and E and the illumination light A. It is worth mentioning that the first near-range reflective surface 25 forms a diamond pattern, thereby adjusting the light pattern. The aforementioned diamond pattern can also be presented as fins or scales.

[0045] As shown in Figures 1 to 6, the first far-range reflective area 241 of the reflector 2 is connected to control light at both ends. The second near-field reflective surface 26 of the [shape] forms a fifth reflection angle θ5 with the first far-field reflective area 241, causing the light generated by the light source 1 to illuminate the ground at both ends through the second near-field reflective surface 26, producing near-field light distributions F and I on both sides. Furthermore, the near-field light distributions F and I on both sides connect the ultra-wide-angle light distributions J and K on both sides with the illuminating light A. Similarly, the second near-field reflective surface 26 forms a diamond pattern, thereby adjusting the light shape. The aforementioned diamond pattern can also be presented as fins or scales.

[0046] As shown in Figure 6, the projection height of the main light from the reflector of the present invention is greater than 1:14 for forward projection and greater than 1:12 for a single side projection. In other words, if the height of the support is 1 meter, the main light can illuminate an area of ​​more than 330 square meters, and the light will not scatter to areas that do not need lighting, thereby reducing environmental light pollution and meeting the needs of ecological green lighting.

[0047] As shown in Figures 1 to 6, the reflective surfaces within the reflector 2 are illuminated by the aforementioned light source, achieving a wide-area ground illumination effect. Figure 7 shows a simulated light distribution diagram of the present invention, which demonstrates that it can produce an extremely wide-angle illumination effect of over 170 degrees.

[0048] As shown in Figure 8, the long-distance ultra-wide-angle light distributions B, C, D, and E generated by the edge reflective surface 23 have an illumination height lower than the height set by the reflector 2, and the projection angle of the long-distance ultra-wide-angle light distributions is 80-89 degrees upward from the support member 3.

[0049] As shown in Figure 8, the ultra-wide-angle light distributions J and K generated by the two reflective surfaces 22 have a projection angle of 80 to 89 degrees upward from the support 3. Since the two reflective surfaces 22 are symmetrical structures, an ultra-wide-angle lighting effect of more than 170 degrees can be achieved.

[0050] Figures 1 to 15 show photographs of the actual application of this invention. As shown in the figures, this invention has been tested in actual application and has the following significant advantages compared to ordinary LED streetlights: at an installation height of 1 meter, the beam width can reach more than 170 degrees, the light tangent is clear, there is no light pollution in the front and back, it has low glare and visual comfort, significantly reduces the number of lamps and energy consumption, and there is no light spillage outside the lane and sidewalk areas, which meets the requirements of low light pollution and low energy consumption, and satisfies the needs of ecological lighting and green lighting.

[0051] As shown in Figures 9 and 10, in some application embodiments of the present invention, for example, when it is necessary to enhance the lighting around the support directly below, the ultra-wide-angle edge light distribution L and M may not be required, and the structure of the reflector 2 does not need to be provided with the edge reflective surface 23.

[0052] In conclusion, the structure of this invention has not been seen in any books or publications or publicly used, and it truly meets the requirements for an invention patent application. We earnestly request your esteemed authority to review this matter and grant the patent as soon as possible. We are deeply grateful for your consideration.

[0053] It should be noted that the above description is a specific embodiment of the present invention and the technical principles used. Any changes made according to the concept of the present invention, if the resulting functions do not exceed the spirit covered by the specification and drawings, should be within the scope of the present invention and are hereby stated.

[0054] 1: Light source

[0055] 2: Reflector

[0056] 2A: Outer side

[0057] 2B: Inside

[0058] 21: Installation Department

[0059] 22: Reflective surfaces on both sides

[0060] θ1: First reflection angle

[0061] 23: Edge reflective surface

[0062] θ2: Second reflection angle

[0063] 24: Long-distance reflective surface

[0064] 241: First far-range reflection zone

[0065] 242: Second far-range reflection zone

[0066] θ3: Third reflection angle

[0067] 25: First close-range reflective surface

[0068] θ4: Fourth reflection angle

[0069] 26: Second close-range reflective surface

[0070] θ5: Fifth reflection angle

[0071] 3: Support components

[0072] A:Illuminating light

[0073] J, K: Light distribution on both sides of the ultra-wide angle

[0074] L, M: Ultra-wide-angle edge light distribution

[0075] B, C, D, E: Long-distance ultra-wide-angle light distribution

[0076] G, H: Frontal close-range light distribution

[0077] F, I: Close-range light distribution on both sides

Claims

1. A wide-angle projection device below eye level, comprising: a light source, a reflector, and a support member; the light source is mounted on the reflector; the reflector has an outer side and an inner side; the support member is disposed on the outer side of the reflector, and the support member provides the reflector to stand on a plane and provides the reflector to adjust its angle; characterized in that: the aforementioned reflector is U-shaped; the inner side of the reflector is provided with a mounting part for mounting the light source, the light source, after being reflected once by the reflector or directly incident by the light source, can produce a wide-angle horizontally expanding forward and lateral illumination light towards the ground; two... The side reflectors, together with the mounting portion, form a first reflection angle, allowing the light generated by the light source to be incident on both sides of the reflector via the two side reflectors, resulting in an extremely wide-angle lateral light distribution. Below the mounting portion and the two side reflectors, an inverted U-shaped edge reflector is provided, forming a second reflection angle between the edge reflector and the mounting portion, allowing the light generated by the light source to be incident on both ends of the reflector via the edge reflector, resulting in an extremely wide-angle lateral light distribution on the ground. Above the mounting portion and the two side reflectors, two symmetrical long-distance reflectors are formed by a bend at the top. These long-distance reflectors are formed by a first long... The reflector is composed of a first long-range reflective area and a second long-range reflective area, symmetrically arranged around the mounting area. The first and second long-range reflective areas share a third reflection angle, allowing the light generated by the light source to illuminate the ground from a long distance via the aforementioned long-range reflective surfaces. The leading edge of the second long-range reflective area forms a first short-range reflective surface that controls the light pattern. This first short-range reflective surface and the second long-range reflective area form a fourth reflection angle, allowing the light generated by the light source to illuminate the ground from a long distance via the aforementioned first short-range reflective surface. The reflector has a near-field light distribution, and the front near-field light distribution is connected between the ultra-wide-angle light distribution on both sides and the illumination light. The first far-field reflective area of ​​the reflector is connected to the second near-field reflective surface at both ends to control the light pattern. The aforementioned second near-field reflective surface and the first far-field reflective area form a fifth reflection angle, so that the light generated by the light source is distributed to illuminate the ground on both sides by the aforementioned first near-field reflective surface. The other two near-field light distributions are connected between the far-field ultra-wide-angle light distribution and the illumination light. By illuminating the various reflective surfaces inside the reflector with the light source, the effect of large-area ground illumination is achieved.

2. The ultra-wide-angle projection device below eye level as described in claim 1, wherein, The ultra-wide-angle light distribution produced by the long-distance reflection zone illuminates at a height lower than that of the reflector.

3. The ultra-wide-angle projection device below eye level as described in claim 2, wherein, The beam angle is 80-89 degrees, which is produced by the long-distance reflection zone and the ultra-wide-angle beam distribution.

4. The ultra-wide-angle projection device below eye level as described in claim 1, wherein, The beam is distributed on both sides of the extremely wide-angle reflective surface, with a beam angle of 80~89 degrees.

5. The ultra-wide-angle projection device below eye level as described in claim 1, wherein, The distance ratio between the support and the main light illumination range is 1:14 or higher for forward projection and 1:12 or higher for a single side projection, which can illuminate an area of ​​approximately 330 square meters or more.

6. The ultra-wide-angle projection device below eye level as described in claim 1, wherein, The first close-range reflective surface forms different patterns such as diamond patterns, fins, and scales, thereby adjusting the light shape.

7. The ultra-wide-angle projection device below eye level as described in claim 1, wherein, The second near-field reflective surface forms different patterns such as diamond patterns, fins, and scales, thereby adjusting the light pattern.

8. A wide-angle projection device below eye level, comprising a light source, a reflector, and a support member; the light source is mounted on the reflector; the reflector has an outer side and an inner side, the inner side having a mounting portion for the light source, the support member being disposed on the outer side of the reflector and providing the reflector to stand upright on a plane; characterized in that: the reflector does not have an edge reflective surface, but only has: a pair of side reflective surfaces forming a first reflection angle with the mounting portion to generate wide-angle side light distribution; a pair of far-distance reflective surfaces, respectively composed of a first far-distance reflective area and a second far-distance reflective area, forming a third reflection angle with the mounting portion; a first near-distance area reflective surface is provided at the leading edge of the second far-distance reflective area to form a fourth reflection angle; second near-distance area reflective surfaces are provided at both ends of the first far-distance reflective area to form a fifth reflection angle; thereby generating wide-angle light distribution without the need for edge reflective surfaces, providing a near-glare-free illumination effect, and enhancing the illumination function directly below the support member.

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