A light collecting device and a signal light

Abstract

The application belongs to the field of outdoor lighting technology equipment, and particularly relates to a light condensing device. The light condensing device comprises a first lens and a light emitting structure. The first lens has an outlight surface and an inlight surface arranged opposite to the outlight surface. The light emitting structure is arranged opposite to the inlight surface and projects light rays towards the inlight surface. The light emitting structure comprises a first light emitting element and a plurality of second light emitting elements arranged along the circumference of the first light emitting element. The inlight surface is provided with a light scattering area opposite to the position of the first light emitting element. The inlight surface is provided with a light condensing area corresponding to each second light emitting element. The first light emitting element projects light rays towards the light scattering area. Any second light emitting element projects light rays. Part of the light rays is incident on the corresponding light condensing area and is emitted from the outlight surface. Another part of the light rays is incident on another light condensing area and is emitted from the outlight surface. The light condensing device can expand the near distance irradiation range of the light emitting structure and improve the far distance irradiation light intensity.

Description

Technical Field

[0001] This invention belongs to the field of outdoor lighting technology and equipment, and particularly relates to a focusing device and a signal light. Background Technology

[0002] Location marker lights are light-emitting devices that convey distress signals, instructions, or other messages by emitting special optical signals.

[0003] Currently, location marker lights have been applied in various fields such as traffic guidance and outdoor search and rescue. Among them, portable location marker lights can be used in outdoor and wilderness situations. They generally include one or more light sources and transmit light signals to make long-distance distress calls or convey other messages. Secondly, some portable location marker lights also have ordinary short-range lighting functions.

[0004] However, the lenses used in existing portable positioning indicator lights usually only have one focusing area, and their focusing effect is poor. When used outdoors and in the wild, the light signals they emit are not easy to be found at a distance. In addition, existing portable positioning indicator lights do not have functional differentiation and cannot simultaneously meet the needs of short-distance illumination range and long-distance illumination intensity. Summary of the Invention

[0005] The purpose of this application is to provide a light-concentrating device that aims to solve the problem of how to expand the short-range illumination range of a light-emitting structure and increase its long-range illumination intensity.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, a light-concentrating device is provided, comprising a first lens and a light-emitting structure. The first lens has a light-emitting surface and a light-incident surface disposed opposite to the light-emitting surface. The light-emitting structure is disposed opposite to the light-incident surface and projects light toward the light-incident surface. The light-emitting structure includes a first light-emitting element and a plurality of second light-emitting elements arranged circumferentially spaced along the first light-emitting element. A diffused light area is provided at a position on the light-incident surface opposite to the first light-emitting element, and a light-concentrating area is provided at a position on the light-incident surface opposite each of the second light-emitting elements. The first light-emitting element projects light toward the diffused light area. Part of the light emitted by any second light-emitting element enters the corresponding light-concentrating area and exits the light-emitting surface, while another part enters another light-concentrating area and exits the light-emitting surface.

[0008] In one embodiment, the focusing areas are connected sequentially, and each focusing area is connected to the diffuser area.

[0009] In one embodiment, the focusing device further includes a second lens, and at least one second light-emitting element is correspondingly provided with the second lens. The second lens is located on the light propagation path of the corresponding second light-emitting element and is used to focus the corresponding light.

[0010] In one embodiment, the second lens is integrally formed with the corresponding second light-emitting element.

[0011] In one embodiment, the light source angle range of the second light-emitting element provided with the second lens is 30 to 80 degrees.

[0012] In one embodiment, the second transparent element is a silicone lens.

[0013] In one embodiment, the first light-emitting element is a straw hat lamp light source, and the light emission angle of the first light-emitting element is 15 degrees.

[0014] In one embodiment, at least one of the second light-emitting elements is an infrared light source, at least one of the second light-emitting elements is a blue light source, at least one of the second light-emitting elements is a red light source, and at least one of the second light-emitting elements is a white light source.

[0015] In one embodiment, the light-emitting structure further includes a circuit board disposed opposite the light-incident surface, wherein the first light-emitting element and each of the second light-emitting elements are electrically connected to the circuit board and located between the circuit board and the light-incident surface.

[0016] Secondly, a signal light is provided, including the focusing device as described above. The signal light also includes a housing and a power supply unit. The housing has a light outlet, the first lens is disposed at the light outlet, and the light-emitting surface is disposed away from the housing. The light-emitting structure is electrically connected to the power supply unit and insulatedly connected to the housing. Both the light-emitting structure and the power supply unit are housed in the housing.

[0017] The beneficial effects of this application are as follows: The diffused light zone has a diverging effect on light; the light emitted by the first light-emitting element is deflected after entering the diffused light zone, and then diverges in all directions before exiting the light surface, thus converting into scattered light with a wider illumination range. The focusing light zone has a converging effect on light; part of the light emitted by any second light-emitting element is deflected after entering the corresponding focusing light zone, and then converges towards the center of the focusing light zone before exiting the light surface, thus converting into a more concentrated main light ray; another part of the light emitted by any second light-emitting element passes through another focusing light zone, is deflected at the corresponding focusing light zone, and then converges before exiting the light surface, thus converting into an auxiliary light ray with an angle to the aforementioned main light ray; each second light-emitting element emits the aforementioned main light ray and auxiliary light ray, thereby realizing multi-angle focusing of the focusing device, and ensuring that the light signal remains visible at a certain distance and the light spot is uniform and not dazzling. Multiple focusing light zones converge the light passing through them, which can improve the luminous efficiency of low-power light-emitting elements, thereby reducing the energy consumption of the light-emitting device. In summary, this application solves the technical problem of how to expand the short-range illumination range of a light-emitting structure and improve its long-range illumination intensity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A cross-sectional view of a traffic light provided in an embodiment of this application;

[0020] Figure 2 A cross-sectional view of the first lens provided in an embodiment of this application;

[0021] Figure 3 for Figure 2 The side view of the first lens A shown;

[0022] Figure 4 This is a schematic diagram of the light-emitting structure provided in the embodiments of this application;

[0023] Figure 5 for Figure 4 A top view of the light-emitting structure shown;

[0024] Figure 6 The Lambertian light distribution curve of the bare light source of the second light-emitting element provided in the embodiment is shown below.

[0025] Figure 7 for Figure 6 The diagram shows the light distribution curve of the second light-emitting element after it has been focused by the second lens.

[0026] Figure 8 for Figure 7 The diagram shows the light distribution curve of the second light-emitting element after it has been focused by the corresponding focusing area.

[0027] Figure 9 for Figure 7 The diagram shows the light distribution curve of the second light-emitting element after it has been focused by the non-corresponding focusing area.

[0028] In the figure, the following reference numerals are used: 100, signal light; 10, focusing device; 11, first lens; 111, light-emitting surface; 112, light-incident surface; 1121, diffused light area; 1122, focusing light area; 12, light-emitting structure; 121, first light-emitting element; 122, second light-emitting element; 13, second lens; 20, circuit board; 30, housing; 31, light-incident cavity; 40, power supply unit. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element 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 application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0031] Please see Figure 1 , Figure 2 and Figure 4This application provides a focusing device 10 for a traffic light 100, including a first lens 11 and a light-emitting structure 12. The first lens 11 has a light-emitting surface 111 and a light-incident surface 112 disposed opposite to the light-emitting surface 111. The light-emitting structure 12 is disposed opposite to the light-incident surface 112 and projects light onto the light-incident surface 112. The light-emitting structure 12 includes a first light-emitting element 121 and a plurality of second light-emitting elements 122 arranged circumferentially spaced along the first light-emitting element 121. A diffused light area 1121 is provided at the position of the light-incident surface 112 facing the first light-emitting element 121, and a focusing light area 1122 is provided at the position of the light-incident surface 112 facing each of the second light-emitting elements 122. The first light-emitting element 121 projects light onto the diffused light area 1121. Part of the light emitted by any second light-emitting element 122 enters the corresponding focusing light area 1122 and exits the light-emitting surface 111, and another part enters another focusing light area 1122 and exits the light-emitting surface 111.

[0032] Please see Figure 2 It is understood that the first lens 11 is recessed in the astigmatic region 1121 in a direction away from the first light-emitting element 121, forming a concave lens structure. Optionally, the first light-emitting element 121 is disposed at the focal point of the concave lens structure. It is understood that the first lens 11 is convex in the focusing region 1122 in a direction corresponding to the second light-emitting element 122, forming a convex lens structure. Optionally, any second light-emitting element 122 is disposed at the focal point of the corresponding convex lens structure.

[0033] It is understood that in this embodiment, the astigmatic region 1121 has a diverging effect on light; the light emitted by the first light-emitting element 121 is deflected after entering the astigmatic region 1121, and then diverges in all directions around the astigmatic region 1121 before exiting the light surface 111, thereby converting it into scattered light with a larger illumination range. The focusing area 1122 has a converging effect on light. A portion of the light emitted by any second light-emitting element 122 is deflected after entering the corresponding focusing area 1122, converges towards the center of the focusing area 1122, and then exits through the light surface 111, thus converting into a more concentrated main ray. Another portion of the light emitted by any second light-emitting element 122 passes through another focusing area 1122, is deflected at the corresponding focusing area 1122, and then converges before exiting through the light surface 111, thus converting into an auxiliary ray with an angle to the aforementioned main ray. Each second light-emitting element 122 emits both the aforementioned main ray and auxiliary ray, thereby achieving multi-angle focusing of the light-emitting device 10, ensuring that the light signal remains visible at a certain distance and that the light spot is uniform and not glaring. Multiple focusing areas 1122 converge the light passing through them, improving the luminous efficiency of low-power light-emitting elements and reducing the energy consumption of the light-emitting device. In summary, this application solves the technical problem of how to expand the near-range illumination range of the light-emitting structure 12 and improve its long-range illumination intensity.

[0034] Qing Reference Figure 4 and Figure 5 It is understood that the embodiments of this application are provided with a plurality of second light-emitting elements 122, which are capable of emitting multiple beams of light. By converging the multiple beams of light separately, the probability of the personnel emitting the light signal being rescued can be increased.

[0035] Optionally, the light-emitting surface 111 is a plane.

[0036] Optionally, the positions of the light-emitting surface 111 and the multiple light-concentrating areas 1122 are convex outward in a direction away from the second light-emitting element 122, forming multiple arc-shaped convex surfaces.

[0037] Please see Figure 1 and Figure 2 Optionally, in this embodiment, the light-emitting surface 111 convexes outward in a direction away from the light-emitting structure 12, forming an arc-shaped convex surface. It is understood that biconvex lenses are typically used to focus light from point sources, and their beam-convexity effect is more significant.

[0038] Please see Figure 5 Optionally, in this embodiment, the second light-emitting element 122 is uniformly distributed along the circumference of the first light-emitting element 121, and the plurality of focusing areas 1122 are correspondingly uniformly distributed along the circumference of the diffusing area 1121. It can be understood that in this embodiment, the plurality of second light-emitting elements 122 can jointly form a more uniform light spot.

[0039] Please see Figure 5 Optionally, in this embodiment, four second light-emitting elements 122 are spaced apart, and four light-concentrating areas 1122 are correspondingly provided.

[0040] Please see Figure 5 Optionally, in this embodiment, each focusing area 1122 is connected in sequence, and each focusing area 1122 is connected to the diffused area 1121.

[0041] It is understood that in this embodiment, the first lens 11 and the light-emitting structure 12 disposed opposite to it are both compact in structure, thereby increasing the portability of the signal light 100 used by the focusing device 10 in this embodiment.

[0042] Optionally, in this embodiment, the focusing device 10 further includes a second lens 13, and at least one second light-emitting element 122 is correspondingly provided with a second lens 13. The second lens 13 is located on the light propagation path of the corresponding second light-emitting element 122 and is used to focus the corresponding light.

[0043] Understandably, the light emitted by the second light-emitting element 122 first passes through the second lens 13 and undergoes a first convergence. Subsequently, part of this light passes through the corresponding focusing area 1122 and undergoes a second convergence, forming a more concentrated main ray; another part of this light passes through other focusing areas 1122 and undergoes a second convergence at corresponding positions, forming more concentrated auxiliary rays. After the aforementioned convergence, the main ray converges at the positions corresponding to the light-emitting surface 111 and each focusing area 1122; multiple auxiliary rays are emitted at multiple angles to the main ray. Multiple second light-emitting elements 122 simultaneously emit the aforementioned main and auxiliary rays.

[0044] It is understood that the dual combination of the first lens 11 and the second lens 13 in this embodiment of the application can improve the central light intensity at a lower power, while also greatly reducing the size of the focusing device 10 and further increasing portability.

[0045] Please see Figure 5 Optionally, in this embodiment, the second lens 13 is integrally formed with the corresponding second light-emitting element 122. It is understood that the bonding between the second lens 13 and the corresponding second light-emitting element 122 can further improve the light efficiency of the second light-emitting element 122.

[0046] Please see Figure 6 Optionally, the second light-emitting element 122 is excited into white light by a blue light chip disposed therein through phosphor, and then forms a Lambertian light emitter. The maximum light intensity of the bare light source of the second light-emitting element 122 after emitting light through the Lambertian light emitter is 7.5 cd.

[0047] Please see Figures 7 to 9 It is understandable that after the first light distribution through the corresponding second lens 13, the maximum light intensity increases to 14.7 CD; subsequently, after the second light distribution through the first lens 11, the maximum light intensity is 303.6 CD; in addition, some light from the second light-emitting element 122 is distributed through other second lenses 13, and there is some auxiliary light intensity in two light emission angle ranges of 20-30 degrees and 40-60 degrees, with auxiliary light intensity values ​​between 4 CD and 7 CD. In this embodiment, the final light intensity value of the emitting surface 111 is more than 40 times that at incidence, and the illumination distance of the corresponding second light-emitting element 122 is extended.

[0048] Optionally, in this embodiment, the light source angle range of the second light-emitting element 122, which is provided with the second lens 13, is 30 to 80 degrees.

[0049] It is understandable that the light emitted by the second light-emitting element 122 is scattered light with a large light source angle range; after being focused by the second lens 13, its light source angle range is reduced to 30-80 degrees, and then it is incident on the corresponding focusing area 1122, which can achieve a better focusing effect.

[0050] Optionally, in this embodiment, the second lens 13 is a silicone lens.

[0051] It is understandable that optical silicone has several advantages over other materials: First, it has high light transmittance, and the optical transparency of silicone lenses far exceeds that of PMMA and PC lenses. Second, optical silicone exhibits virtually no residual stress after molding, thus avoiding lens deformation and breakage caused by residual stress, as well as birefringence. Third, optical silicone has a low refractive index, maintaining a stable low refractive index under high and low temperature environments and with various wavelengths of light passing through; furthermore, its low dispersion results in high-definition imaging. In summary, using silicone lenses ensures that the corresponding second light-emitting element 122 has high light transmittance, high safety performance, and a clear light spot.

[0052] Optionally, the first light-emitting element 121 is a piranha-shaped LED with a light emission angle of 15 degrees, and it can be used under low power conditions. It is understood that the light emission angle of the piranha-shaped LED is 15 degrees, and the light emitted by it can obtain a larger illumination range after being diffused by the astigmatism area 1121 on the first lens 11.

[0053] Please see Figure 3 Optionally, in this embodiment, the first light-emitting element 121 is a straw hat lamp light source, and the light emission angle of the first light-emitting element 121 is 15 degrees. Optionally, in this embodiment, the first light-emitting element 121 emits white light. It can be understood that the first light-emitting element 121 projects light with a light angle of 15 degrees into the diffused light area 1121, and the light, after being diffused by the diffused light area 1121, can obtain a large range of white light illumination at close range.

[0054] Please see Figure 1 Optionally, in this embodiment, one end of the first light-emitting element 121 extends toward the astigmatic region 1121, and the concave surface of the astigmatic region 1121 partially surrounds the first light-emitting element 121. It is understood that in this embodiment, the light emitted by the first light-emitting element 121 can be projected onto the astigmatic region 1121 rather than other parts of the light-emitting surface 111, thereby optimizing the astigmatic effect of the astigmatic region 1121.

[0055] Optionally, in this embodiment, at least one second light-emitting element 122 is an infrared light source, at least one second light-emitting element 122 is a blue light source, at least one second light-emitting element 122 is a red light source, and at least one second light-emitting element 122 is a white light source.

[0056] Understandably, multiple second light-emitting elements 122 can cooperate with each other to make the focusing device 10 emit light of different colors; by defining each color of light, different distress messages can be conveyed.

[0057] It is understood that the bare light source of the infrared light source used in this embodiment has a light emission angle of 20 degrees, which can greatly increase the central light intensity, reduce power consumption, and make the lamp have a longer battery life.

[0058] Optionally, the focusing device 10 also includes a control unit, which can control the power supply and power-off of the first light-emitting element 121 and a plurality of second light-emitting elements 122, and make the focusing device 10 emit light of different colors.

[0059] Please see Figure 4 and Figure 5 Optionally, in this embodiment, the light-emitting structure 12 further includes a circuit board 20, which is disposed opposite to the light-incident surface 112. The first light-emitting element 121 and each of the second light-emitting elements 122 are electrically connected to the circuit board 20 and are located between the circuit board 20 and the light-incident surface 112.

[0060] It is understood that one end of the circuit board 20 is electrically connected to the first light-emitting element 121 and a plurality of second light-emitting elements 122; the other end is electrically connected to the power supply unit 40, and the light-emitting structure 12 is shown in the circuit diagram.

[0061] Please see Figure 1 This application also proposes a signal light 100, which includes a focusing device 10 from any of the aforementioned solutions. The specific structure of the focusing device 10 is as described in the above embodiments. Since this application adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The signal light 100 also includes a housing 30 and a power supply unit 40. The housing 30 has a light outlet, a first lens 11 is disposed at the light outlet, and the light emitting surface 111 is disposed away from the housing 30; the light-emitting structure 12 is electrically connected to the power supply unit 40 and insulated from the housing 30; the light-emitting structure 12 and the power supply unit 40 are both housed in the housing 30.

[0062] It is understandable that by electrically connecting the focusing device 10 to the power supply unit 40, the light-emitting structure 12 is connected to the circuit to achieve its light-emitting function.

[0063] Please see Figure 2 Optionally, the first lens 11 is integrally formed with the housing 30 and forms a cylindrical structure with an entrance cavity 31, in which the light-emitting structure 12 is housed.

[0064] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A light collecting device, characterized by The light collecting device comprises a first lens and a light emitting structure, the first lens has an out-light surface and an in-light surface opposite to the out-light surface, the light emitting structure is arranged opposite to the in-light surface and projects light rays towards the in-light surface, the light emitting structure comprises a first light emitting element and a plurality of second light emitting elements arranged along the circumference of the first light emitting element, the in-light surface is provided with a light dispersing area opposite to the position of the first light emitting element, and the in-light surface is provided with a light collecting area corresponding to each second light emitting element; the first light emitting element projects light rays towards the light dispersing area; part of the light rays emitted by any second light emitting element is deflected after being incident on the corresponding light collecting area, converges to the center of the light collecting area, and then is emitted from the out-light surface to be converted into main light rays, and another part is deflected at the corresponding light collecting area after being incident on another light collecting area, converges, and then is emitted from the out-light surface to be converted into auxiliary light rays having an angle with the main light rays.

2. The light collecting device of claim 1, wherein The light collecting areas are sequentially connected, and each light collecting area is connected to the light dispersing area.

3. The light collecting device of claim 1, wherein The light collecting device further comprises a second lens, at least one second light emitting element is provided with the second lens corresponding thereto, and the second lens is located on the light ray propagation path of the corresponding second light emitting element and is used for converging the corresponding light rays.

4. The light collecting device of claim 3, wherein The second lens is integrally formed with the corresponding second light emitting element.

5. The light collecting device of claim 3, wherein The light source angle range of the second light emitting element provided with the second lens is 30-80 degrees.

6. The light collecting device of claim 3, wherein The second lens is a silica gel lens.

7. The light collecting device of claim 1, wherein The first light emitting element is a grass hat light source, and the light emitting angle of the first light emitting element is 15 degrees.

8. The light collecting device according to any one of claims 1 to 7, wherein At least one second light emitting element is an infrared light source, at least one second light emitting element is a blue light source, at least one second light emitting element is a red light source, and at least one second light emitting element is a white light source.

9. The light collecting device according to any one of claims 1 to 7, wherein The light emitting structure further comprises a circuit board, the circuit board is arranged opposite to the in-light surface, the first light emitting element and each second light emitting element are electrically connected to the circuit board and are located between the circuit board and the in-light surface.

10. A signal light, characterized by The signal lamp comprises a light collecting device according to any one of claims 1-9, a housing, and a power supply unit; the housing is provided with an out-light opening, the first lens is arranged at the out-light opening, and the out-light surface is arranged away from the housing; the light emitting structure is electrically connected to the power supply unit and is insulated from the housing; the light emitting structure and the power supply unit are accommodated in the housing.

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