Lens structure for guiding light intensity distribution, tunnel lamp and tunnel lighting equipment

Abstract

The utility model provides a lens structure for guiding light intensity distribution. A refraction lens guides one part of emergent light of a scattering light source to be refracted and then gathered towards the middle direction of a central axis, and guides the other part of emergent light of the scattering light source to be refracted and then deflected towards the two sides of the central axis. The utility model provides a tunnel lamp, which is characterized in that a lens cover comprising a plurality of lens structures is covered on a scattering light source array, so that two parts of emergent light rays which are deflected towards two sides and gathered towards the middle in the scattering light source array can be guided to be distributed in the front-back direction of a tunnel and the central direction of a tunnel road surface; according to the tunnel lighting equipment provided by the utility model, the tunnel lamp is arranged above the shell module, and is arranged on the side wall of the tunnel through the first bracket and the second bracket, so that the lighting requirement on a tunnel pavement is met, and the driving safety in the tunnel is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel lighting equipment, in particular to a lens structure for guiding light intensity distribution, a tunnel lamp and tunnel lighting equipment. Background Art

[0002] Tunnel lighting equipment is designed specifically for tunnel lighting and needs to meet special lighting requirements inside the tunnel, including: illuminating specific areas inside the tunnel, adapting to temperature changes and vibration conditions of the external environment, being fixedly installable on the side walls or top of the tunnel, and having good heat dissipation performance, etc., so as to ensure driving safety inside the tunnel and improve visibility inside the tunnel.

[0003] Due to the self-luminous characteristics of LEDs, they cannot be directly used for lighting when used as light sources, especially in the field of directional lighting involved in tunnel lighting. Existing tunnel lighting equipment usually uses an optical lens to cover the LED light source, but its optical lens has the problem of unsatisfactory light distribution, with relatively poor longitudinal and lateral uniformity, resulting in relatively low light intensity and illumination brightness distributed in the front-back direction of the tunnel and the central direction of the tunnel road surface, posing a great hidden danger to driving safety inside the tunnel. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a lens structure for guiding light intensity distribution, a tunnel lamp and tunnel lighting equipment, which are used to solve the problem of relatively low light intensity and illumination brightness in the front-back direction of the tunnel and the central direction of the tunnel road surface caused by unsatisfactory light distribution of existing tunnel lighting equipment.

[0005] To achieve the above purpose and other related purposes, the first aspect of the present utility model provides a lens structure for guiding light intensity distribution, which is used to guide the outgoing light rays of a scattering light source to be distributed in a specific direction. The lens structure for guiding light intensity distribution includes: a refractive lens, the refractive lens covers the scattering light source, and the refractive lens includes: a first curved surface arranged on the inner side and a second curved surface arranged on the outer side; wherein, both the first curved surface and the second curved surface are free-form surfaces with a reflection symmetry structure along the central axis direction of the refractive lens; a part of the outgoing light rays emitted by the scattering light source towards the central axis direction of the refractive lens are refracted by the first curved surface and the second curved surface and converge towards the middle, and another part of the outgoing light rays emitted by the scattering light source towards the two sides of the central axis of the refractive lens are refracted by the first curved surface and the second curved surface and deflected towards the two sides.

[0006] To achieve the above and other related objectives, a second aspect of the present utility model provides a tunnel lighting fixture, which includes: a scattering light source array, comprising: a plurality of scattering light source components distributed in an array; each scattering light source component includes one or more scattering light sources; a lens cover, comprising: a lens structure for guiding the light intensity distribution and distributed in an array; the refractive lens in each lens structure correspondingly covers each scattering light source component, and is respectively used to guide the two parts of the emitted light that deflects to both sides and converges towards the middle in each scattering light source component to be distributed in the front-back direction of the tunnel and in the central direction of the tunnel road surface, so as to meet the lighting requirements of the tunnel lighting equipment for the tunnel road surface.

[0007] In some embodiments of the second aspect of the present utility model, the tunnel lighting fixture further includes: a circuit board, and the scattering light source array is disposed on the circuit board.

[0008] In some embodiments of the second aspect of the present utility model, the tunnel lighting fixture further includes: a face mask for covering the circuit area of the circuit board; the face mask is snap-connected to the lens cover and jointly covers one or more circuit boards.

[0009] In some embodiments of the second aspect of the present utility model, the circuit board is made of ceramic material and is provided with an over-temperature protection device.

[0010] To achieve the above and other related objectives, a third aspect of the present utility model provides a tunnel lighting equipment, which includes: one or more of the above-mentioned tunnel lighting fixtures, a power supply module, and a housing module; wherein, each of the tunnel lighting fixtures and the power supply module are respectively installed on the upper and lower sides of the housing module.

[0011] In some embodiments of the third aspect of the present utility model, the tunnel lighting equipment further includes: a first bracket and a second bracket; wherein, the first bracket and the second bracket are respectively installed on the left and right sides of the housing module and are used to fix the tunnel lighting equipment to the tunnel side wall.

[0012] In some embodiments of the third aspect of the present utility model, the tunnel lighting equipment further includes: a stop turntable; the stop turntable is installed between the first bracket and the housing module and is used to adjust the installation angle of the tunnel lighting equipment with respect to the tunnel side wall and fix the tunnel lighting equipment.

[0013] In some embodiments of the third aspect of the present utility model, the housing module includes: one or more tunnel lamp housing structures; each of the tunnel lamp housing structures is integrally formed or is formed by splicing to meet the lighting requirements of different powers of the tunnel lighting equipment.

[0014] In some embodiments of the third aspect of the present utility model, the housing module includes: a wire groove; the wire groove is used to accommodate wires and protect the wires.

[0015] As described above, the present utility model provides a lens structure for guiding light intensity distribution. By refracting the lens, a part of the outgoing light of the scattered light source is refracted and converges towards the middle direction of its central axis, and another part of the outgoing light of the scattered light source is refracted and deflected towards both sides of its central axis; the present utility model provides a tunnel lamp. By covering a lens cover including a plurality of the lens structures on the scattered light source array, the two parts of the outgoing light that are deflected towards both sides and converge towards the middle in the scattered light source array can be distributed in the front-rear direction of the tunnel and the central direction of the tunnel road surface; the present utility model provides a tunnel lighting device. By installing the tunnel lamp above the housing module and installing it on the tunnel side wall through the first bracket and the second bracket, the lighting requirement for the tunnel road surface can be met, and the driving safety in the tunnel can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A It shows a schematic optical path diagram of the refracting lens of the lens structure for guiding light intensity distribution in the present utility model along the central axis direction in an embodiment.

[0017] Figure 1B It shows a schematic optical path diagram of the refracting lens of the lens structure for guiding light intensity distribution in the present utility model along the direction perpendicular to the central axis in an embodiment.

[0018] Figure 2 It shows a schematic light intensity distribution diagram of the lens structure for guiding light intensity distribution in the present utility model in an embodiment.

[0019] Figure 3 It shows an assembly schematic diagram of the tunnel lamp in an embodiment of the present utility model.

[0020] Figure 4A It shows a sectional view of the lens cover of the tunnel lamp in the A-A direction in an embodiment of the present utility model.

[0021] Figure 4B It shows a sectional view of the lens cover of the tunnel lamp in the B-B direction in an embodiment of the present utility model.

[0022] Figure 5 It shows a front assembly schematic diagram of the tunnel lighting device in an embodiment of the present utility model.

[0023] Figure 6 It shows a back assembly schematic diagram of the tunnel lighting device in an embodiment of the present utility model.

[0024] Figure 7AIt shows a schematic structural diagram of the housing module of the tunnel lighting device in an embodiment of the present utility model.

[0025] Figure 7B It shows a schematic structural diagram of the housing module of the tunnel lighting device in an embodiment of the present utility model.

[0026] Figure 7C It shows a schematic structural diagram of the housing module of the tunnel lighting device in an embodiment of the present utility model.

[0027] Element number description

[0028] 1 Scattering light source

[0029] 2 Refraction lens

[0030] 21 First curved surface

[0031] 22 Second curved surface

[0032] 3 Scattering light source array

[0033] 31 Scattering light source component

[0034] 4 Lens cover

[0035] 5 Circuit board

[0036] 6 Mask

[0037] 7 Power module

[0038] 71 Power box

[0039] 72 Waterproof connector

[0040] 73 Constant current source circuit board

[0041] 74 Sealing strip

[0042] 75 Rubber wire loop

[0043] 8 Housing module

[0044] 9 First bracket

[0045] 10 Second bracket

[0046] 11 Stop turntable

[0047] 12 Wire groove

[0048] 121 Groove body

[0049] 122 Waterproof sealing plate

[0050] 123 Pressing plate Detailed implementation manner

[0051] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0052] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is only limited by the claims of the published patent. The terms used herein are only for describing specific embodiments and are not intended to limit this application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.

[0053] In the present utility model, unless otherwise clearly defined and limited, terms such as "install", "connect", "join", "fix", "hold" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0054] Furthermore, as used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or meaning any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition only occurs when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0055] To solve the problems in the above-mentioned background technology, the present utility model provides a lens structure for guiding light intensity distribution, a tunnel lamp, and a tunnel lighting device, aiming to solve the problem that the light intensity and illumination brightness in the front and back directions of the tunnel and in the central direction of the tunnel road surface are relatively low due to the unsatisfactory light distribution of the existing tunnel lighting devices, so as to meet the lighting requirements of the tunnel lighting devices for the tunnel road surface. In order to make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be further described in detail through the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the invention.

[0056] As Figure 1A , Figure 1B and Figure 2 shown, the present utility model provides a lens structure for guiding light intensity distribution, which is used to guide the outgoing light of the scattering light source 1 to be distributed in a specific direction, and includes: a refractive lens 2. The refractive lens 2 covers the scattering light source 1, and the refractive lens 2 includes: a first curved surface 21 provided on the inner side and a second curved surface 22 provided on the outer side. Wherein, both the first curved surface 21 and the second curved surface 22 are free-form surfaces with a reflection symmetry structure along the central axis direction of the refractive lens 2; a part of the outgoing light emitted by the scattering light source 1 towards the central axis direction of the refractive lens 2 is refracted by the first curved surface 21 and the second curved surface 22 and converges towards the middle, and another part of the outgoing light emitted by the scattering light source 1 towards the directions on both sides of the central axis of the refractive lens 2 is refracted by the first curved surface 21 and the second curved surface 22 and deflects towards both sides. It should be noted that the central axis of the refractive lens 2 is its axis of symmetry, and the direction is the same as its width direction.

[0057] Specifically, Figure 1A is the optical path schematic diagram of the refractive lens 2 along the central axis direction, Figure 1B is the optical path schematic diagram of the refractive lens along the direction perpendicular to the central axis. As Figure 1A shown, the first curved surface 21 and the second curved surface 22 of the refractive lens 2 are asymmetric structures along the central axis direction. In this direction, the first curved surface 21 and the second curved surface 22 respectively include a plurality of micro-curved surface structures with different curvatures. Wherein, the curvatures of one side of the first curved surface 21 and the second curved surface 22 are smaller and the curvatures of the other side are larger, so that a part of the outgoing light of the scattering light source 1 is refracted by the first curved surface 21 and the second curved surface 22 and deflects more towards the side with a smaller curvature. During use, the central axis of the refractive lens 2 is perpendicular to the tunnel direction, and the side with a smaller curvature is oriented towards the central direction of the tunnel road surface. After the refraction of this part of the outgoing light, it can converge towards this direction, thereby ensuring a greater light intensity distribution and higher illumination brightness in the tunnel road surface direction.

[0058] AsFigure 1B As shown, the first surface 21 and the second surface 22 of the refractive lens 2 are axially symmetric structures based on the central axis, and the central axis is located directly above the corresponding covered scattering light source 1. At this time, another part of the emitted light of the scattering light source 1 is refracted by the first surface 21 and the second surface 22 and deflected toward the left and right sides of the central axis. And because the first surface 21 and the second surface 22 are axially symmetric in this direction, the light intensity distributions deflected on the left and right sides of the central axis are symmetric and uniform. When in use, the central axis of the refractive lens 2 is perpendicular to the tunnel direction, and the side with the smaller curvature is oriented toward the center of the tunnel road surface. The light rays deflected toward the left and right sides of the central axis will make the light intensity distributions in front of and behind the tunnel symmetric and uniform, thereby ensuring a relatively high and uniform illumination brightness when entering and leaving the tunnel.

[0059] As Figure 2 shown, after the emitted light of the scattering light source 1 is refracted by the first free surface 21 and the second free surface 22, the light rays converge toward the middle of the central axis, and then the light intensity tends to be more on one side ( Figure 2 the right side shown); and the light intensity distributions in the directions on both sides of the central axis are symmetrically distributed and uniform, thus fully ensuring the illumination brightness in the front and back directions of the tunnel and in the direction of the center of the tunnel road surface, and ensuring the driving safety in the tunnel.

[0060] In a preferred embodiment, the scattering light source 1 uses an LED lamp bead, its scattering angle is 120°, and the angle after being refracted by the refractive lens 2 is 142° * 68°. Among them, the refraction angle in the central axis direction is 68°, and the refraction angle perpendicular to the central axis direction is 142°.

[0061] As Figure 3 shown, the present invention provides a tunnel lamp. The tunnel lamp includes: a scattering light source array 3 and a lens cover 4.

[0062] The scattering light source array 3 includes: a plurality of scattering light source components 31 distributed in an array; each scattering light source component 31 includes one or more scattering light sources 1. In a specific embodiment, each scattering light source array 3 includes 19 scattering light source components 31, and each scattering light source component 31 includes four scattering light sources 1. Preferably, the scattering light source 1 uses an LED lamp bead.

[0063] The lens cover 4 includes: a plurality of the above-mentioned lens structures for guiding the light intensity distribution distributed in an array. The refractive lens 2 in each lens structure correspondingly covers each scattering light source component 31, and is respectively used to guide the two parts of the emitted light deflected toward both sides and converging toward the middle in the corresponding scattering light source component 31 to be distributed in the front and back directions of the tunnel and in the direction of the center of the tunnel road surface, so as to meet the lighting requirements of the tunnel lighting equipment for the tunnel road surface. In a specific embodiment, as Figure 3As shown, the lens cover 4 can correspond to 2 of the scattering light source arrays 3. The lens cover 4 includes 40 refractive lenses 2, which are used to correspondingly cover each of the scattering light source components 31.

[0064] As Figure 4A and Figure 4B shown, the sectional views of the lens cover 4 of a tunnel lamp of the present utility model in the A-A direction and the B-B direction are respectively shown. In the sectional view of the lens cover 4 in the A-A direction, each refractive lens 2 has an axisymmetric structure, and the first curved surface 21 and the second curved surface 22 provided therein also both have an axisymmetric structure. Based on the optical principle of the refractive lens 2, a part of the outgoing light rays of each scattering light source 1 in the scattering light source array 3 are refracted and uniformly and symmetrically distributed in the A-A direction. When using the tunnel lamp, the A-A direction of the lens cover 4 is oriented towards the tunnel direction, and the axis of symmetry of each refractive lens 2 is perpendicular to the tunnel direction, so that the light intensity distributions in front of and behind the tunnel are symmetric and uniform, thereby ensuring that the lighting brightness when entering and leaving the tunnel is high and uniform. In the sectional view of the lens cover 4 in the B-B direction, the first curved surface 21 and the second curved surface 22 of each refractive lens 2 include a plurality of micro-curved surface structures with different curvatures. The sides with smaller curvatures of all the refractive lenses 2 are arranged on the same side, and when using this tunnel lamp, the side with the smaller curvature is oriented towards the center direction of the tunnel road surface. At this time, based on the optical principle of the refractive lens 2, another part of the outgoing light rays of each scattering light source 1 in the scattering light source array 3 are refracted and converge towards the center direction of the tunnel road surface, thereby ensuring that the light intensity distribution in the tunnel road surface direction is more and the lighting brightness is higher.

[0065] In a specific embodiment, the lens cover 4 is made of polycarbonate resin material and is provided with a waterproof structure, which can increase the moisture-proof and anti-corrosion functions of the tunnel lamp in the tunnel environment, improve the durability of the tunnel lamp, and extend its service life.

[0066] In an embodiment, the tunnel lamp further includes: a circuit board 5. The scattering light source array 3 is disposed on the circuit board 5. Preferably, the circuit board 6 is made of ceramic material and is provided with an over-temperature protection device.

[0067] In an embodiment, the tunnel lamp further includes: a face mask 6 for covering the circuit area of the circuit board 5; the face mask 6 is snap-connected to the lens cover 4 and jointly covers one or more circuit boards 5. Through the face mask 6, not only can the circuit part of the circuit board 5 be protected from water and dust, but also the tunnel lamp can be made more beautiful.

[0068] As Figure 5 and Figure 6As shown in the figure, the present utility model provides a tunnel lighting device. The tunnel lighting device includes: one or more of the tunnel lamps, a power supply module 7, and a housing module 8. Among them, each of the tunnel lamps and the power supply module 7 are respectively installed on the upper and lower sides of the housing module 8.

[0069] In this embodiment, one or more threaded holes are provided on the circuit board 5 of the tunnel lamp, and corresponding threaded holes are also provided above the housing module 8. One or more of the circuit boards 5 and the housing module 8 can be fixedly installed together by screws. It should be noted that using screws to fix the circuit board 5 and the housing module 8 can reduce the glue curing time, make the transfer more convenient, and improve the production efficiency of the tunnel lighting device. At the same time, each of the lens covers 4 is snap-connected to the housing module 8. Thus, each of the tunnel lamps is fixedly installed on the housing module 8.

[0070] Moreover, a structure for assembling the power supply module 7 is provided on the lower side of the housing module 8, so that the power supply module 7 is fixedly installed below the housing module 8. In a specific embodiment, the power supply module 7 includes: a power supply box 71, two waterproof connectors 72 of different sizes, a constant current source circuit board 73, a sealing strip 74, and a rubber wire ring 75. The power supply module is fixedly installed at a specified structure below the housing module 8 by screws, and during installation, it is sealed by the sealing ring 74 or the rubber wire ring 75 to ensure the sealing and fastening of the installation, and at the same time improve the anti-vibration performance of the tunnel lighting device. In this embodiment, the constant current source circuit board 73 for supplying power to the tunnel lighting device is protected by using the power supply box 71, and corresponding openings are provided on the power supply box 71 for installing the waterproof connectors 72, so that the power supply module 7 meets the requirements of the protection level IP66, is safe and reliable, convenient to disassemble, and has low maintenance costs.

[0071] In an embodiment, the tunnel lighting device further includes: a first bracket 9 and a second bracket 10; among them, the first bracket 9 and the second bracket 10 are respectively installed on the left and right sides of the housing module 8 for fixing the tunnel lighting device to the tunnel side wall.

[0072] In a preferred embodiment, the tunnel lighting device further includes: a stop turntable 11; the stop turntable 11 is installed between the first bracket 9 and the housing module 8, and is used to adjust the installation angle of the tunnel lighting device with respect to the tunnel sidewall and fix the tunnel lighting device. In this embodiment, the stop turntable 11 is provided with scales. Through the stop turntable 11, the tunnel lighting device can be fixedly installed on the tunnel sidewall at a certain angle, so that the tunnel lighting device has a certain anti-vibration performance; and by adjusting the stop turntable 11, its installation angle can be adjusted, so that the light of the tunnel lamp is distributed in specific directions, including the front and rear directions of the tunnel and the central direction of the tunnel road surface, meeting the lighting requirements of the tunnel lighting device for the tunnel road surface and ensuring the driving safety in the tunnel.

[0073] In an embodiment, the housing module 8 includes: one or more tunnel lamp housing structures; each of the tunnel lamp housing structures is integrally formed or spliced to meet the lighting requirements of different powers of the tunnel lighting device. For example Figure 7A , Figure 7B and Figure 7C as shown, the housing module 8 includes multiple modes, such as a single tunnel lamp housing structure, a double tunnel lamp housing structure, and a triple tunnel lamp housing structure. Preferably, the housing module 8 is made of aluminum alloy material, and has better heat dissipation performance. It should be noted that the number and assembly form of each of the tunnel lamp housing structures in the housing module 8 are not limited in the present invention and can be set according to requirements. For example, according to the power requirement of the tunnel lighting device, it is determined how many tunnel lamps need to be installed correspondingly in the housing module 8 to determine the structure of the housing module 8.

[0074] In a specific embodiment, the housing module 8 includes: a wire groove 12; the wire groove 12 is used to accommodate wires and protect the wires. For example Figure 6 as shown, the wire groove 12 includes: a groove body 121, a waterproof sealing plate 122, and a pressing plate 123 provided below the housing module 8. The pressing plate 123 and the waterproof sealing plate 122 are fixedly installed on the groove body 121 by screws. Various wires of the tunnel lighting device are accommodated in the groove body 121. Through the wire groove 12, not only are the wires centrally stored, the wiring is beautiful, and the insulation effect is good; more importantly, the wires are prevented from being exposed to the external environment, affecting their service life.

[0075] In summary, the present utility model provides a lens structure for guiding light intensity distribution. By means of a refractive lens, a part of the outgoing light rays of a scattered light source is refracted and converges towards the middle direction of its central axis, and another part of the outgoing light rays of the scattered light source is refracted and deflected towards both sides of its central axis. The present utility model provides a tunnel lamp. By covering a lens cover including a plurality of the lens structures on a scattered light source array, the two parts of the outgoing light rays that are deflected towards both sides and converge towards the middle in the scattered light source array can be distributed in the front-back direction of the tunnel and the central direction of the tunnel road surface. The present utility model provides a tunnel lighting device. By installing the tunnel lamp above a housing module and installing it on the tunnel side wall through a first bracket and a second bracket, the lighting requirement for the tunnel road surface can be met, and the driving safety in the tunnel can be ensured.

[0076] Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0077] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A lens structure for guiding light intensity distribution, used for guiding the outgoing light of a scattering light source (1) to be distributed in a specific direction, characterized in that: include: A refractive lens (2), the refractive lens (2) being disposed on the scattered light source (1), the refractive lens (2) comprising: a first curved surface (21) disposed on the inner side and a second curved surface (22) disposed on the outer side; Wherein, the first curved surface (21) and the second curved surface (22) are both free-form curved surfaces with a reflective symmetrical structure along the central axis direction of the refractive lens (2); a portion of the outgoing light rays emitted by the scattered light source (1) in the direction of the central axis of the refractive lens (2) are gathered toward the center after being refracted by the first curved surface (21) and the second curved surface (22), and another portion of the outgoing light rays emitted by the scattered light source (1) in the directions on both sides of the central axis of the refractive lens (2) are deflected toward both sides after being refracted by the first curved surface (21) and the second curved surface (22).

2. A tunnel lamp, characterized in that: include: A scattered light source array (3) comprising: a plurality of scattered light source components (31) distributed in an array; each scattered light source component (31) comprising one or more scattered light sources (1); The lens cover (4) comprises: a plurality of lens structures for guiding light intensity distribution as claimed in claim 1 distributed in an array; the refractive lens (2) in each lens structure is correspondingly covered on each scattered light source assembly (31), and is respectively used to guide the two parts of emitted light deflected toward the sides and gathered toward the middle in the corresponding scattered light source assembly (31) to be distributed in the front and rear directions of the tunnel and the central direction of the tunnel road surface, thereby meeting the lighting requirements of the tunnel lighting equipment on the tunnel road surface.

3. The tunnel lamp according to claim 2, characterized in that: The tunnel lamp further comprises: a circuit substrate (5), and the scattered light source array (3) is arranged on the circuit substrate (5).

4. The tunnel lamp according to claim 3, characterized in that: The tunnel lamp further comprises: a mask (6) for covering the circuit area of ​​the circuit substrate (5); the mask (6) is snap-connected with the lens cover (4) and is jointly covered on one or more circuit substrates (5).

5. The tunnel lamp according to claim 3, characterized in that: The circuit substrate (5) is made of ceramic material and is provided with an over-temperature protection device.

6. A tunnel lighting device, characterized in that: include: One or more tunnel lamps, power modules (7) and housing modules (8) according to any one of claims 2 to 5; wherein each of the tunnel lamps and the power modules (7) are respectively installed on the upper and lower sides of the housing module (8).

7. The tunnel lighting device according to claim 6, characterized in that: The tunnel lighting device further comprises: a first bracket (9) and a second bracket (10); The first bracket (9) and the second bracket (10) are respectively installed on the left and right sides of the housing module (8) to fix the tunnel lighting device on the tunnel side wall.

8. The tunnel lighting device according to claim 7, characterized in that: The tunnel lighting device further comprises: a stop disc (11); the stop disc (11) is installed between the first bracket (9) and the housing module (8) and is used to adjust the installation angle between the tunnel lighting device and the tunnel side wall and to fix the tunnel lighting device.

9. The tunnel lighting device according to claim 6, characterized in that: The housing module (8) comprises: one or more tunnel lamp housing structures; each of the tunnel lamp housing structures is formed in an integrated manner or in a splicing manner to meet the lighting requirements of different powers of the tunnel lighting equipment.

10. The tunnel lighting device according to claim 6, characterized in that: The housing module (8) comprises: a wire trough (12); the wire trough (12) is used to accommodate and protect the wires.

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