Polarized court lamp lens unit and polarized court lamp

Abstract

The utility model discloses a polarized ball court lamp lens unit and polarized ball court lamp, polarized ball court lamp lens unit includes light -transmitting body, curved surface reflector, prism reflector, light source and installation part, light -transmitting body is fixed on the installation part and forms the light source chamber in the light -transmitting body, and the light source is located in the light source chamber, one end of light -transmitting body is equipped with the overflow light port of communication with the light source chamber, and the curved surface reflector and prism reflector are respectively arranged in the inside and outside two sides of overflow light port, the bottom of curved surface reflector is higher than the luminous surface of light source, the top of prism reflector is higher than the bottom of curved surface reflector, and the top of prism reflector is located the upper of the extension line of the connecting line between the bottom of curved surface reflector and light source center. After adopting the utility model as the lighting equipment of stadium, the forward light flux ratio is equal to or greater than 79%, and the backward light flux ratio is equal to or less than 21%, effectively reduces the proportion of backward light, can satisfy the multiple requirements of uniformity, luminous efficiency and glare control of large stadium lighting work.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to a polarized stadium light lens unit and a polarized stadium light. Background Technology

[0002] Stadium lights are commonly used lighting equipment in sports venues. Currently, stadium lights generally use high-mast projectors. High-mast projectors have two main disadvantages: First, they cause backlight glare and light pollution. The original output angle of the light source is about 120°. If a cutoff design is not adopted, about 40% of the luminous flux will cross the field boundary. Second, there is a loss of luminous efficiency. Backlight cannot be utilized, and the illuminance can only be compensated by increasing the power in the design, which is not conducive to the development requirements of energy conservation.

[0003] Utility model patent document CN214501004U discloses a stadium light lens. Its technical solution includes a mounting panel with several rows of light-transmitting groups. Each row of light-transmitting groups has a convex light-transmitting strip and several convex light-transmitting bodies. The length of the convex light-transmitting strip is greater than the length of the convex light-transmitting bodies. The convex light-transmitting strips and bodies are made of transparent material and are integrally formed. The convex lens body has a recessed light-emitting cavity for housing external LEDs. The convex light-transmitting bodies have a reflective groove recessed towards the interior of the convex light-transmitting body, and a reflective surface is provided on the side wall of the reflective groove closest to the light-emitting cavity. Although this utility model can reduce light efficiency loss and glare, it can only achieve unidirectional polarization, and the proportion of unusable backlight remains relatively high. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a polarized stadium light lens unit that can effectively reduce rear glare and improve the utilization rate of rear light.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a polarized stadium light lens unit, including a light-transmitting body, a curved reflector, a prism reflector, a light source, and a mounting part; the light-transmitting body is fixed on the mounting part to form a light source cavity located inside the light-transmitting body, and the light source is located inside the light source cavity; one end of the light-transmitting body is provided with an overflow port communicating with the light source cavity, and the curved reflector and the prism reflector are respectively arranged on the inner and outer sides of the overflow port; the bottom of the curved reflector is higher than the light-emitting surface of the light source, the top of the prism reflector is higher than the bottom of the curved reflector, and the top of the prism reflector is located above the extension line of the line connecting the bottom of the curved reflector and the center of the light source.

[0006] As a further improvement to the above scheme: the outer side of the light-transmitting body is the light-emitting surface of the light-transmitting body, the inner side of the light-transmitting body is the light-incident surface of the light-transmitting body, the light-emitting surface of the light-transmitting body is an outwardly convex arc surface, and the light-incident surface of the light-transmitting body is an inclined surface; the side of the curved reflector facing the light-incident surface of the light-transmitting body is the light-incident surface of the curved reflector, and the side of the curved reflector away from the light-incident surface of the light-transmitting body is the reflective surface of the curved reflector; the curved reflector and the light-transmitting body are an integral structure, and the curved reflector and the light-transmitting body share the light-emitting surface of the light-transmitting body.

[0007] As a further improvement to the above scheme: the light-incident surface of the curved reflector faces the light-incident surface of the transparent body, and an acute angle is formed between the light-incident surface of the curved reflector and the light-incident surface of the transparent body, and the reflective surface of the curved reflector is a curved surface that is concave inward towards the center.

[0008] As a further improvement to the above scheme: the inner side of the prism reflector is the light-incident surface of the prism reflector, and both outer sides of the prism reflector are the light-reflecting surfaces of the prism reflector; the light-incident surface of the prism reflector faces the center of the light source, and the two light-reflecting surfaces of the prism reflector are light-emitting surfaces of each other; the bottom of the prism reflector is provided with a plane that is flush with the light-emitting surface of the light source.

[0009] As a further improvement to the above solution: the mounting part is a flat flange, and the flat flange has an opening on the side near the light overflow port. The flat flange forms a semi-enclosed shield outside the light source; the two ends of the prism reflector are respectively fixed on both sides of the opening of the flat flange, and the middle part of the prism reflector is suspended between the opening of the flat flange and the light overflow port.

[0010] This utility model also discloses a polarized sports light, including a light panel and multiple polarized sports light lens units as described above, wherein the multiple polarized sports light lens units are arranged in an array on the light panel of the polarized sports light.

[0011] The beneficial effects of this utility model are as follows: By setting up a light-transmitting body, a curved reflector, and a prism reflector to form a multi-level light path, the curved reflector and prism reflector are used to collect the side light and back light emitted by the light source and reproject them onto the target area in front, thereby effectively reducing back glare and improving the utilization rate of back light and side light, thus improving the uniformity of illuminance. When this utility model is used as the lighting equipment for sports venues, the proportion of forward light flux is ≥79% and the proportion of back light flux is ≤21%, which effectively reduces the proportion of back light and can meet the multiple requirements of uniformity, luminous efficiency and glare control for the lighting work of large sports venues. Attached Figure Description

[0012] Figure 1 This is an isometric view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3This is a bottom view of the present invention; Figure 4 This is a schematic diagram of the optical path of this utility model; Figure 5 This is a schematic diagram showing the interaction between adjacent polarized stadium light lens units; Figure 6 This is a schematic diagram of a polarized stadium light; Figure 7 This is a schematic diagram of the light distribution of polarized stadium lights.

[0013] The markings in the diagram are as follows: 100-transmitting body, 110-overflowing light outlet, 120-light-transmitting body light-emitting surface, 130-light-transmitting body light-incident surface, 200-curved reflector, 210-curved reflector light-incident surface, 220-curved reflector reflective surface, 300-prism reflector, 310-prism reflector light-incident surface, 320-prism reflector reflective surface, 400-light source, 500-mounting part. Detailed Implementation

[0014] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0015] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figures 1 to 3 As shown, the polarized stadium light lens unit disclosed in this utility model consists of a light-transmitting body 100, a curved reflector 200, a prism reflector 300, a light source 400, and a mounting part 500. The light-transmitting body 100 is used to receive the light emitted by the light source 400 and project it onto a designated area. The curved reflector 200 is used to receive the lateral light emitted by the light source 400 and reflect it back to the light-transmitting body 100, which then projects the recovered lateral light. The prism reflector 300 is used to receive the rearward light emitted by the light source 400 and reflect it onto a designated area. The mounting part 500 is used to support and fix the entire lens unit and to shield the light source 400.

[0017] Specifically, such as Figures 1 to 3As shown, the light-transmitting body 100 in this invention is a lens structure. The light-transmitting body 100 is an arc-shaped structure fixed on the mounting part 500. The interior of the light-transmitting body 100 has a light source cavity that can accommodate the light source 400. An overflow port 110 communicating with the light source cavity is provided at one end of the light-transmitting body 100. The other parts of the light-transmitting body 100 are fixedly connected to the mounting part 500 to form a sealed fit. The outer surface of the light-transmitting body 100 is the light-emitting surface 120, and the inner surface of the light-transmitting body 100 is the light-incident surface 130. The light-emitting surface 120 is a convex arc surface, and the light-incident surface 130 is a sloped surface. By controlling the curvature of the arc surface of the light-emitting surface 120, this invention can form a light distribution with a maximum light intensity deflection of 40° within a range of 35°×80°, which can just meet the typical lighting needs of sports venues such as football and track and field. In the light emitted by the light source 400, the forward light enters the light-transmitting body 100 through the light-transmitting body entrance surface 130, and is transmitted to the designated illumination area through the light-transmitting body exit surface 120 under the transmission effect of the light-transmitting body 100; the backward light emitted by the light source 400 is emitted backward through the light-escape port 110 of the light-transmitting body 100.

[0018] This invention utilizes a curved reflector 200 and a prism reflector 300 to respectively receive lateral and rearward light emitted from the light source 400. For example... Figures 1 to 3 As shown, the curved reflector 200 and the prism reflector 300 are respectively disposed on the inner and outer sides of the light spillway 110. The bottom of the curved reflector 200 is higher than the light-emitting surface of the light source 400, thereby preventing light leakage from the top of the curved reflector 200 and distributing some of the received lateral light to the prism reflector 300. The top of the prism reflector 300 is higher than the bottom of the curved reflector 200, and the top of the prism reflector 300 is located above the extension line of the line connecting the bottom of the curved reflector 200 and the center of the light source 400. Through the above structural constraints, the curved reflector 200 can maximize the recovery of lateral light emitted by the light source 400, and the prism reflector 300 can maximize the recovery of backward light emitted by the light source 400.

[0019] Specifically, such as Figure 2 and Figure 3As shown, the side of the curved reflector 200 facing the light-incident surface 130 of the light-transmitting body is the curved reflector light-incident surface 210, and the side of the curved reflector 200 facing away from the light-incident surface 130 of the light-transmitting body is the curved reflector reflective surface 220. The curved reflector 200 and the light-transmitting body 100 are an integral structure, and the curved reflector 200 and the light-transmitting body 100 share the light-exit surface 120 of the light-transmitting body. The curved reflector light-incident surface 210 faces the light-incident surface 130 of the light-transmitting body, and an acute angle is formed between the curved reflector light-incident surface 210 and the light-incident surface 130. The curved reflector reflective surface 220 is a curved surface that is concave inward towards the center, and the curved reflector reflective surface 220 can direct the reflected light to both sides. The three-sided opening avoids excessive light concentration in the center, thus effectively increasing the uniformity of illumination in the projection area. The inner surface of the prism reflector 300 is the light-incident surface 310, and both outer surfaces are light-reflecting surfaces 320. The light-incident surface 310 faces the center of the light source 400, and the two light-reflecting surfaces 320 of the prism reflector 300 are light-emitting surfaces. The bottom of the prism reflector 300 has a plane flush with the light-emitting surface of the light source 400, which effectively reduces the width of the prism reflector 300, saving space and facilitating a compact layout of the overall lens structure. Furthermore, after assembling multiple polarized stadium light lens units onto the polarized stadium light, such as... Figure 5 As shown, the prism reflector 300 of the previous polarized stadium light lens unit can form a new optical cavity with the light-transmitting body 100 of the next polarized stadium light lens unit. The prism reflector 300 can be processed into sharp edges and corners and can be easily demolded, taking into account both optical performance and manufacturing feasibility.

[0020] like Figure 4As shown, the polarized stadium light lens unit of this invention mainly includes four light propagation paths when projecting light emitted from the light source 400. In the first light path, the forward light emitted from the light source 400 enters the light-transmitting body 100 through the light-transmitting incident surface 130, and is then refracted by the light-transmitting exit surface 120 before being projected onto the designated lighting area in front. In the second light path, the lateral light emitted from the light source 400 is received by the curved reflector 200, enters the curved reflector 200 through the light-transmitting incident surface 210, is then reflected by the reflective surface 220 into the light-transmitting body 100, and is finally refracted by the light-transmitting exit surface 120 before being projected onto the designated lighting area in front. In the third optical path, the backward-facing light emitted by the light source 400 is emitted backward through the overflow port 110, received by the prism reflector incident surface 310 of the prism reflector 300, then refracted to the upper prism reflector reflective surface 320, reflected to the lower prism reflector reflective surface 320, and emitted downward. In the fourth optical path, the backward-facing light emitted by the light source 400 is emitted backward through the overflow port 110, received by the prism reflector incident surface 310 of the prism reflector 300, then refracted to the lower prism reflector reflective surface 320, reflected to the upper prism reflector reflective surface 320, and emitted upward, projected onto the designated illumination area in front. Figure 7 As shown, this invention can achieve a beam angle of 80° in the C0-C180 cross section and a beam angle of 40° in the C90-C270 cross section, with the maximum light intensity direction deflected by 40°±5° relative to the optical axis. By recycling the lateral and rearward light rays from the light source 400, the forward luminous flux proportion is ≥79% and the rearward luminous flux proportion is ≤21% in the light projected by the polarized stadium light lens unit, effectively reducing the proportion of rearward light. If a white LED with an encapsulated sphere is used, because the yellow spot of this LED is relatively weak, the lens surface does not need to be textured, and the forward luminous flux proportion can even reach 82% and the rearward luminous flux proportion can reach 18%.

[0021] Specifically, such as Figure 1 As shown, the mounting part 500 used in this utility model is a flat flange. The flat flange has an opening on the side near the light overflow port 110, and the flat flange forms a semi-enclosed shield outside the light source 400. The two ends of the prism reflector 300 are respectively fixed to the two sides of the opening of the flat flange, and the middle part of the prism reflector 300 is suspended between the opening of the flat flange and the light overflow port 110. By using a flat flange, it is easy to assemble multiple polarized stadium light lens units, and a good shielding effect is formed on the side of the light source 400, preventing the side light emitted by the light source 400 from overflowing.

[0022] This utility model also discloses a polarized stadium light, such as... Figure 6As shown, the polarized stadium light consists of multiple polarized stadium light lens units arranged in an array on the lamp panel. To comply with international standards, the array of polarized stadium light lens units is set to a 4×4 array, forming a 16-in-1 lighting module. The light source 400 uses 3030 LED beads, and the overall thickness of the light source 400 is only 0.6mm. The spacing between the LED beads is 12.5mm×12.5mm, and the dimensions of each polarized stadium light lens unit are also 12.5mm×12.5mm. To avoid contamination from external impurities or rainwater, a tempered glass protective cover can be installed on the lamp panel to isolate the optical cavity of the polarized stadium light lens unit from the external space, achieving good anti-fouling and waterproof effects.

Claims

1. A polarized court light lens unit, characterized by: It includes a light-transmitting body (100), a curved reflector (200), a prism reflector (300), a light source (400), and a mounting part (500); the light-transmitting body (100) is fixed on the mounting part (500) to form a light source cavity located inside the light-transmitting body (100), and the light source (400) is located inside the light source cavity; one end of the light-transmitting body (100) is provided with an overflow port (110) communicating with the light source cavity, and the curved reflector (200) and the prism reflector (300) are respectively arranged on the inner and outer sides of the overflow port (110); the bottom of the curved reflector (200) is higher than the light-emitting surface of the light source (400), the top of the prism reflector (300) is higher than the bottom of the curved reflector (200), and the top of the prism reflector (300) is located above the extension line of the line connecting the bottom of the curved reflector (200) and the center of the light source (400).

2. The polarizing stadium light lens unit as described in claim 1, characterized in that: The outer surface of the light-transmitting body (100) is the light-emitting surface (120), and the inner surface of the light-transmitting body (100) is the light-incident surface (130). The light-emitting surface (120) is an outwardly convex arc surface, and the light-incident surface (130) is an inclined surface. The side of the curved reflector (200) facing the light-incident surface (130) is the light-incident surface (210), and the side of the curved reflector (200) away from the light-incident surface (130) is the reflective surface (220). The curved reflector (200) and the light-transmitting body (100) are an integral structure, and the curved reflector (200) and the light-transmitting body (100) share the light-emitting surface (120).

3. The polarized court light lens unit according to claim 2, wherein: The light-incident surface (210) of the curved reflector faces the light-incident surface (130) of the transparent body, and an acute angle is formed between the light-incident surface (210) of the curved reflector and the light-incident surface (130) of the transparent body. The reflective surface (220) of the curved reflector is a curved surface that is concave inward towards the center.

4. The polarized court light lens unit of claim 1, wherein: The inner surface of the prism reflector (300) is the light-incident surface (310) of the prism reflector, and the two outer surfaces of the prism reflector (300) are both light-reflecting surfaces (320) of the prism reflector; the light-incident surface (310) of the prism reflector faces the center of the light source (400), and the two light-reflecting surfaces (320) of the prism reflector (300) are light-emitting surfaces of each other; the bottom of the prism reflector (300) is provided with a plane that is flush with the light-emitting surface of the light source (400).

5. The polarized court light lens unit of claim 1, wherein: The mounting part (500) is a flat flange. The flat flange has an opening on the side near the overflow port (110). The flat flange forms a semi-enclosed shield on the outside of the light source (400). The two ends of the prism reflector (300) are fixed on both sides of the opening of the flat flange, and the middle part of the prism reflector (300) is suspended between the opening of the flat flange and the overflow port (110).

6. A polarized stadium light, including a light panel, characterized in that: It also includes a plurality of polarizing stadium light lens units as described in any one of claims 1 to 5, wherein the plurality of polarizing stadium light lens units are arranged in an array on the lamp panel of the polarizing stadium light.

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