Lens and projection lamp

Abstract

The utility model discloses a lens and a projection lamp. The projection lamp comprises a mounting part and a lens part, the lens part is a similar semi-circular truncated cone, the similar semi-circular truncated cone comprises a similar semi-circular side and a similar trapezoidal side, and the similar semi-circular side serves as a light-emitting surface; the lens part is arranged on the mounting part, and the quasi-trapezoid side is connected with the mounting part; the mounting part is provided with a light through groove, and the light through groove is communicated with the interior of the lens part; the light passing groove is used for containing a light source. The lens part is arranged to be similar to a semi-circular truncated cone, and the light passing groove is formed in the mounting part, so that when the lens covers the light source, the irradiation direction of the light source and the light emitting surface of the lens are not in the same direction, most energy light emitted by the light source can be deflected through the lens, and the trend of most light energy is deviated from the surface direction of the light source; indirect polarized light illumination is achieved, and therefore the problems that the luminance is not uniform and glare is obvious are solved.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a lens and a floodlight. Background Technology

[0002] Low-to-medium level street lighting is an important method in road lighting, typically used in urban elevated roads, ramps, bridges; parks, squares; commercial districts; and residential areas. Low-to-medium level street lighting plays a vital role in improving road lighting quality, enhancing safety, and beautifying the city's image. When selecting luminaires for low-to-medium level lighting, parameters such as brightness, luminous efficacy, and glare reduction need to be considered to ensure the lighting effect meets expectations. However, current luminaires used for low-to-medium level lighting suffer from problems such as uneven light emission and significant glare. Utility Model Content

[0003] The technical problem to be solved by this utility model is: a lens and floodlight that solves the problems of uneven light emission and obvious glare.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A lens includes a mounting portion and a lens portion; the lens portion is a semi-truncated cone-shaped structure, the semi-truncated cone-shaped structure including a semi-circular side and a trapezoidal side, the semi-circular side serving as a light-emitting surface; the lens portion is disposed on the mounting portion, and the trapezoidal side is connected to the mounting portion; the mounting portion is provided with a light-transmitting groove, and the light-transmitting groove communicates with the interior of the lens portion; the light-transmitting groove is used to accommodate a light source.

[0006] Furthermore, it also includes a light-collecting part; the light-collecting part is disposed on the mounting part and is disposed on the side away from the semi-circular side.

[0007] Furthermore, a buckle is provided on the side of the mounting part away from the lens part; the buckle is used to connect with the slot of the peripheral device.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] A floodlight includes the lens described above, and also includes a housing, a light-transmitting plate, and a first light source plate; the first light source plate is disposed inside the housing; a light source is disposed on the first light source plate, and slots are provided on both sides of the light source; the lens is connected to the slots by a snap fastener, and the light-transmitting groove of the lens covers the light source; the light-transmitting plate is connected to the housing and is disposed at the front end of the light-emitting surface of the lens.

[0010] Furthermore, an installation channel is provided in a first direction on the inner wall of the housing; the first light source board is disposed in the installation channel and is engaged with the installation channel.

[0011] Furthermore, the housing is provided with detachable end caps at both ends in the first direction.

[0012] Furthermore, it also includes a second light source plate; the second light source plate is disposed inside the housing on the side opposite to the first light source plate; the light-emitting surface of the second light source plate faces the light-transmitting plate.

[0013] Furthermore, a baffle is provided on the side of the housing where the light-transmitting plate is located, and the baffle and the light-transmitting plate form an angle.

[0014] Furthermore, it also includes a mounting bracket; a groove is provided on the outer side of the housing; the mounting bracket is slidably disposed within the groove.

[0015] Furthermore, it includes at least two lenses; at least two light sources are provided on the first light source plate, and each light source has a slot on both sides; the lenses are arranged in a one-to-one correspondence with the light sources.

[0016] The beneficial effects of this utility model are as follows: by setting the lens part as a semi-circular frustum and setting the light-transmitting groove in the mounting part, when the lens is placed on the light source, the illumination direction of the light source and the light-emitting surface of the lens are not in the same direction. The lens can deflect most of the energy light emitted by the light source, so that the direction of most of the light energy deviates from the direction of the light source surface, thereby realizing indirect polarized lighting and solving the problems of uneven light emission and obvious glare. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a lens in an embodiment of the present invention;

[0018] Figure 2 This is a side view of a lens according to an embodiment of the present utility model;

[0019] Figure 3 This is a top view of a lens in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of a floodlight according to an embodiment of the present utility model;

[0021] Figure 5 This is a side view of a floodlight according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the first light source plate and lens of a floodlight in an embodiment of the present invention;

[0023] Figure 7 for Figure 6 Enlarged view of the structure labeled C;

[0024] Figure 8 This is a schematic diagram of the first light source board and lens array structure of a floodlight in an embodiment of this utility model;

[0025] Figure 9 for Figure 4 Enlarged view of the structure marked as part A in the middle;

[0026] Figure 10 for Figure 4 Enlarged view of the structure marked as part B;

[0027] Figure 11 This is a simulation diagram of a floodlight according to an embodiment of the present utility model;

[0028] Figure 12 This is a simulation result diagram of a floodlight according to an embodiment of this utility model;

[0029] Label Explanation:

[0030] 1. Lens; 11. Mounting part; 12. Lens part; 13. Light transmission groove; 14. Light collecting part; 15. Clip;

[0031] 2. Housing; 21. Mounting channel; 22. Slide groove; 23. Snap-fit ​​groove;

[0032] 3. Translucent panel;

[0033] 4. First light source board; 41. Light source; 42. Card slot;

[0034] 5. End cap; 6. Second light source board; 7. Baffle; 8. Mounting bracket; 9. Power supply; 91. Wiring; 92. Protective coil. Detailed Implementation

[0035] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0036] A lens includes a mounting portion and a lens portion; the lens portion is a semi-truncated cone-shaped structure, the semi-truncated cone-shaped structure including a semi-circular side and a trapezoidal side, the semi-circular side serving as a light-emitting surface; the lens portion is disposed on the mounting portion, and the trapezoidal side is connected to the mounting portion; the mounting portion is provided with a light-transmitting groove, and the light-transmitting groove communicates with the interior of the lens portion; the light-transmitting groove is used to accommodate a light source.

[0037] As can be seen from the above description, the beneficial effects of this embodiment are as follows: by setting the lens part as a semi-truncated cone and setting the light-transmitting groove in the mounting part, when the lens is placed on the light source, the illumination direction of the light source and the light-emitting surface of the lens are not in the same direction. The lens can deflect most of the energy light emitted by the light source, so that the direction of most of the light energy deviates from the direction of the light source surface, thereby realizing indirect polarized illumination and solving the problems of uneven light emission and obvious glare.

[0038] Furthermore, it also includes a light-collecting part; the light-collecting part is disposed on the mounting part and is disposed on the side away from the semi-circular side.

[0039] As can be seen from the above description, by setting a light-collecting part at the other end of the luminous surface on the semi-circular side, it is possible to collect the scattered light emitted in the opposite direction, preventing excess light from being scattered out from the opposite end of the luminous surface and affecting the light output effect.

[0040] Furthermore, a buckle is provided on the side of the mounting part away from the lens part; the buckle is used to connect with the slot of the peripheral device.

[0041] As can be seen from the above description, by setting a buckle at the bottom of the lens, the lens can be easily connected to the light source structure.

[0042] Another embodiment of this utility model provides a floodlight, including the lens described above, and further including a housing, a light-transmitting plate, and a first light source plate; the first light source plate is disposed inside the housing; a light source is disposed on the first light source plate, and slots are provided on both sides of the light source; the lens is connected to the slots by a snap fastener, and the light-transmitting groove of the lens covers the light source; the light-transmitting plate is connected to the housing and disposed at the front end of the light-emitting surface of the lens.

[0043] As can be seen from the above description, the beneficial effects of this embodiment are that by setting a slot on the first light source plate, the lens is snapped into the first light source plate; by using the lens, most of the light energy is deviated from the direction of the light source surface, indirect polarized illumination is achieved, solving the problems of uneven light emission and obvious glare; at the same time, a light-transmitting plate is also set at the front end of the light-emitting surface of the lens, making the light emission more uniform.

[0044] Furthermore, an installation channel is provided in a first direction on the inner wall of the housing; the first light source board is disposed in the installation channel and is engaged with the installation channel.

[0045] As can be seen from the above description, by setting an installation channel inside the housing and placing the first light source board inside the installation channel, the stability of the light source board is improved.

[0046] Furthermore, the housing is provided with detachable end caps at both ends in the first direction.

[0047] As can be seen from the above description, by providing end caps at both ends of the housing in the first direction, the light from the side can be effectively blocked, and the first light source board can be easily installed by removing the end caps, and the first light source board can be limited in the first direction.

[0048] Furthermore, it also includes a second light source plate; the second light source plate is disposed inside the housing on the side opposite to the first light source plate; the light-emitting surface of the second light source plate faces the light-transmitting plate.

[0049] As described above, by setting a second light source plate with its light-emitting surface facing the light-transmitting plate, the light emitted by the second light source plate in conjunction with the light-transmitting plate can play a supplementary lighting role, thereby enhancing the light energy and improving the uniformity of the entire irradiated surface.

[0050] Furthermore, a baffle is provided on the side of the housing where the light-transmitting plate is located, and the baffle and the light-transmitting plate form an angle.

[0051] As described above, by setting a baffle that forms an angle with the light-transmitting plate on one side of the light-transmitting plate, the light is further blocked by the baffle in the form of physical blocking, thereby improving the anti-glare effect.

[0052] Furthermore, it also includes a mounting bracket; a groove is provided on the outer side of the housing; the mounting bracket is slidably disposed within the groove.

[0053] As can be seen from the above description, by providing a sliding groove on the outside of the housing, the mounting bracket can be adjusted at any distance on the sliding groove to achieve the installation of the lamp.

[0054] Furthermore, it includes at least two lenses; at least two light sources are provided on the first light source plate, and each light source has a slot on both sides; the lenses are arranged in a one-to-one correspondence with the light sources.

[0055] As described above, by setting multiple light sources on the light source board and setting multiple lenses that cooperate with the light sources, the corresponding number of light sources and lenses can be set according to different scenarios to meet the lighting needs of different scenarios.

[0056] The lens and floodlight provided by this utility model can be applied to low-to-medium level lighting scenarios, such as urban elevated roads, ramps, bridges, parks, squares, commercial streets, residential areas, etc. As streetlights, they can also be used in indoor environments such as classrooms. The following is a detailed description of the specific implementation methods:

[0057] Example 1

[0058] Please refer to Figures 1 to 3A lens 1 includes a mounting portion 11 and a lens portion 12. The lens portion 12 is a semi-frustum-like structure, comprising a semi-circular side and a trapezoidal side, with the semi-circular side serving as the light-emitting surface. The lens 1 employs a total internal reflection design, and the lens portion 12 has a non-centrally symmetrical structure. The lens portion 12 is mounted on the mounting portion 11, with the trapezoidal side connected to the mounting portion 11. The mounting portion 11 has a light-transmitting groove 13, which communicates with the interior of the lens portion 12. The light-transmitting groove 13 is used to accommodate a light source 41. Simultaneously, the mounting portion 11 also has a light-collecting portion 14, located away from the semi-circular side, i.e., on the backlight surface of the lens portion 12. This light-collecting portion is primarily used to collect stray light from the rear end, preventing excess light from scattering away from the backlight surface. In order to facilitate the installation of lens 1, a buckle 15 is provided on the side of the mounting part 11 away from lens part 12; the buckle 15 is used to connect with the slot 42 of the peripheral device; for example, the slot 42 is provided on the structure such as the light source board or heat sink, and the lens 1 is mounted on the structure such as the light source board or heat sink by the cooperation of the slot 42 and the buckle 15.

[0059] The optical principle of lens 1 is as follows:

[0060] Among them, lens 1 performs light distribution processing on the light rays from the reflecting surface and the refracting surface based on the principle of total internal reflection, so that the light rays are polarized and emitted to form the energy distribution required for illumination.

[0061] After connecting lens 1 to the light source board, the light source is placed within the light-transmitting groove, and the direction of illumination from the light source is not in the same direction as the emitting surface of lens 1. When the light source illuminates, lens 1 deflects most of the energy emitted by the light source through total internal reflection. This causes most of the light energy after total internal reflection to deviate from the direction of the light source surface and be emitted towards the emitting surface of lens 1, changing the light distribution angle of the light emitted by the light source. This achieves indirect polarized illumination through total internal reflection, solving the problems of illumination distance and glare. Simultaneously, the angle of the emitting surface of lens 1 also limits the angle of the light. The angle of the emitting surface of lens 1 can be adjusted according to different application scenarios to meet the application requirements of different scenarios, providing strong controllability of the illumination direction and improving light utilization. For example, the above lens 1 structure can evenly illuminate the road surface, solving the glare problem for pedestrians and drivers.

[0062] Example 2

[0063] Please refer to Figures 4 to 9 A floodlight includes a lens 1 as described in one embodiment, and also includes a housing 2, a light-transmitting plate 3, a first light source plate 4, and an end cap 5; as Figure 4As shown, the housing 2 is a quasi-quadrangular prism structure. One side serves as the light-emitting surface for setting the light-transmitting plate 3. After the light-transmitting plate 3 is set on the light-emitting surface of the housing 2, a closed cavity is formed inside the housing 2 for setting the first light source plate 4. The two ends of the housing 2 in the first direction are provided with detachable end caps 5. The first direction is the length direction of the housing 2, that is, the end caps 5 are set at both ends in the length direction of the housing 2.

[0064] like Figure 5 As shown, the light-transmitting plate 3 is connected to the housing 2 and is disposed at the front end of the light-emitting surface of the lens 1; wherein, the light-transmitting plate 3 is a transparent plate; a snap-fit ​​groove 23 is provided on one side of the light-emitting surface of the housing 2, and the light-transmitting plate 3 is disposed in the snap-fit ​​groove 23; when the end caps 5 are not installed at both ends of the housing 2, the light-transmitting plate 3 is slidably disposed in the snap-fit ​​groove 23; and after the end caps 5 are installed, the light-transmitting plate 3 is limited in the snap-fit ​​groove 23. In other optional embodiments, the light-transmitting plate 3 can also be disposed on the housing 2 by adhesive bonding, or connected to the housing 2 by a snap-fit ​​structure.

[0065] The housing 2 has an installation channel 21 on its inner wall in a first direction. A first light source plate 4 is disposed within and engaged with the installation channel 21. When the end caps 5 are not yet installed at either end of the housing 2, the first light source plate 4 is slidably disposed within the installation channel 21. After the end caps 5 are installed, the first light source plate 4 is confined within the installation channel 21. In other optional embodiments, the first light source plate 4 can also be connected to the housing 2 via other connection methods.

[0066] like Figure 6 and Figure 7 As shown, a light source 41 is provided on the first light source plate 4, and slots 42 are provided on both sides of the light source 41; a lens 1 is connected to the slot 42 via a buckle 15, and the light transmission slot 13 of the lens 1 covers the light source 41; wherein, multiple light sources 41 are provided on the first light source plate 4, and slots 42 are provided on both sides of each light source 41; at the same time, lenses 1 are provided in a one-to-one correspondence with the number of light sources 41; as shown Figure 6 In the first light source plate 4, the light sources 41 are arranged in a row; in other application scenarios, the light sources 41 are distributed in an array on the first light source plate 4; such as... Figure 8 As shown, the light source 41 is arranged in a 2×2 array; similarly, the lens 1 is also arranged in a 2×2 array; that is, the lens 1 can be arranged in single, two-in-one, four-in-one or linear and rectangular manner, and can be combined with different heat sinks to meet different installation conditions and lighting requirements.

[0067] Please refer to Figure 5 as well as Figure 9The housing 2 also contains a second light source plate 6; the second light source plate 6 is located on the side of the housing 2 opposite to the first light source plate 4; the light-emitting surface of the second light source plate 6 faces the light-transmitting plate 3; wherein, in some optional embodiments, the light-emitting surface of the second light source plate 6 is parallel to the light-transmitting plate 3. Figure 5 The floodlight has two light sources: one is the first light source plate 4, which is structurally combined with the lens 1 and set in the upper part of the housing 2 to form the main polarized illumination energy; the other is the second light source plate 6, which is set in the lower part of the housing 2 and works with the light-transmitting plate 3 to emit light, playing a supplementary lighting role. It is mainly used to enhance the illumination energy of the upper edge to improve the uniformity of the entire illumination surface.

[0068] Please refer to Figure 4 as well as Figure 5 On one side of the housing 2 where the light-transmitting plate 3 is located, a baffle 7 is also provided, and the baffle 7 and the light-transmitting plate 3 form an angle; the angle between the baffle 7 and the light-transmitting plate 3 can be adjusted according to the actual lighting requirements. By using the baffle 7 and the light-transmitting plate 3 together, and placing the light source 41 inside the housing 2, glare can be better controlled without affecting optical efficiency, and the light spot effect can be guaranteed.

[0069] Please refer to Figure 4 , Figure 5 as well as Figure 10 The outer side of the housing 2 is also provided with a mounting bracket 8 and a power supply 9; wherein, the outer side of the housing 2 is provided with a sliding groove 22; the mounting bracket 8 is slidably disposed in the sliding groove 22; by placing the mounting bracket 8 behind the housing 2 and cooperating with the sliding groove 22, the distance of the housing 2 can be adjusted arbitrarily to fix it. The power supply 9 is connected to the internal circuit structure, such as the first light source board 4 and the second light source board 6, through a wiring 91 passing through a wiring hole 91 on the housing 2; and a protective coil 92 is provided at the wiring hole 91 to protect the wiring 91; by placing the power supply 9 behind the lamp body, the power supply 9 can be repaired and replaced more conveniently and quickly.

[0070] like Figure 11 As shown, the IES file of the light distribution curve corresponding to the above floodlights was imported into the Dialux file, and a simulation was performed in a standard space with an illumination surface of 4*1.2 m. The vertical illuminance uniformity of the illumination surface was then obtained. The simulation results are as follows: Figure 12 As shown in the chart, the floodlights meet the technical requirements. For example, when used as streetlights, the above-mentioned floodlights, through reasonable lens design, can evenly project light onto the road surface. Combined with baffle and light-transmitting cover design, the deeply concealed LED light source can better control glare, thereby solving the glare problem for pedestrians and drivers and improving eye comfort.

[0071] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lens characterized by, The lens comprises a mounting portion and a lens portion; The lens portion is a semi-circular table, which comprises a semi-circular side and a trapezoidal side, and the semi-circular side is a light emitting surface; The lens portion is arranged on the mounting portion, and the trapezoidal side is connected with the mounting portion; The mounting portion is provided with a light passing groove, and the light passing groove is in communication with the inside of the lens portion; The light passing groove is used for accommodating a light source.

2. A lens according to claim 1, wherein Further comprising a light collecting portion; The light collecting portion is arranged on the mounting portion and is arranged on the side away from the semi-circular side.

3. The lens of claim 1, wherein The mounting portion is provided with a buckle on the side away from the lens portion; The buckle is used for connecting with the clamping groove of the external device.

4. A light projector, characterized by The lens comprises a mounting portion and a lens portion; The lens portion is a semi-circular table, which comprises a semi-circular side and a trapezoidal side, and the semi-circular side is a light emitting surface; The lens portion is arranged on the mounting portion, and the trapezoidal side is connected with the mounting portion; The mounting portion is provided with a light passing groove, and the light passing groove is in communication with the inside of the lens portion; The light passing groove is used for accommodating a light source.

5. The light projector of claim 4, wherein the light projector is configured to: Further comprising a light collecting portion; The light collecting portion is arranged on the mounting portion and is arranged on the side away from the semi-circular side.

6. The light projector of claim 5, wherein the light projector is configured to: The mounting portion is provided with a buckle on the side away from the lens portion; 7. The light projector of claim 4, wherein the light projector is configured to project the image onto the surface in a manner that is substantially uniform across the surface. The buckle is used for connecting with the clamping groove of the external device. The lens comprises a mounting portion and a lens portion; The lens portion is a semi-circular table, which comprises a semi-circular side and a trapezoidal side, and the semi-circular side is a light emitting surface; 8. The light projector of claim 4, wherein the light projector is configured to: The lens portion is arranged on the mounting portion, and the trapezoidal side is connected with the mounting portion; 9. The light projector of claim 4, wherein the light projector is configured to project the image onto the surface in a manner that is substantially uniform across the surface. The mounting portion is provided with a light passing groove, and the light passing groove is in communication with the inside of the lens portion; The light passing groove is used for accommodating a light source. Further comprising a light collecting portion; 10. The light projector of claim 4, wherein the light projector is configured to project the image onto the surface in a manner that is substantially uniform across the surface. The light collecting portion is arranged on the mounting portion and is arranged on the side away from the semi-circular side. The mounting portion is provided with a buckle on the side away from the lens portion; The buckle is used for connecting with the clamping groove of the external device. The lens comprises a mounting portion and a lens portion; The lens portion is a semi-circular table, which comprises a semi-circular side and a trapezoidal side, and the semi-circular side is a light emitting surface; The lens portion is arranged on the mounting portion, and the trapezoidal side is connected with the mounting portion; The mounting portion is provided with a light passing groove, and the light passing groove is in communication with the inside of the lens portion; The light passing groove is used for accommodating a light source. Further comprising a light collecting portion; The light collecting portion is arranged on the mounting portion and is arranged on the side away from the semi-circular side. The mounting portion is provided with a buckle on the side away from the lens portion; The buckle is used for connecting with the clamping groove of the external device.

Images