Tunnel dark field lighting device

Abstract

The utility model relates to the technical field of tunnel lighting, in particular to a tunnel dark field lighting device which comprises a base, a connecting block is arranged at the bottom of the base, a lamp tube is fixedly connected to the bottom of the connecting block, lamp wicks are connected to the inner wall of the lamp tube and arranged in a rectangular array mode, and the lamp wicks are arranged on the base. Due to the fact that the lamp cores are arranged in a rectangular array mode, emitted light rays are emitted in a rectangular mode, when a plurality of sets of lamps are used at the same time, the light rays can be sequentially and evenly arranged, the utilization rate of the light rays of the lamps can be improved, and due to the adoption of the Fresnel lens, the phenomenon that due to the fact that a common convex lens is used, the light rays are not damaged can be avoided. And the phenomenon that the corners become dark and fuzzy can occur.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel lighting, in particular to a tunnel dark field lighting device. Background Art

[0002] Tunnel lighting can improve the road conditions in the tunnel, improve the visual enjoyment in the tunnel, reduce driver fatigue, and help improve the tunnel's traffic capacity to ensure traffic safety. Specifically, some special visual phenomena must be considered in tunnel lighting. In order to optimize the design of tunnel lighting, it is necessary to first understand some basic visual problems. During the day, when a driver enters a tunnel, he or she will encounter the following visual problems: When entering the tunnel, the brightness outside the tunnel is much higher than that inside the tunnel, which has an adverse effect on the visual function. As a result, the road conditions are not clear and car accidents are prone to occur. For this reason, tunnel lighting is usually divided into entrance lighting, internal lighting and exit lighting. Among them, internal lighting has stricter requirements due to the lack of external light.

[0003] The prior art, such as announcement number CN213299742U, provides a tunnel lighting device, including a fixing mechanism, a lamp holder mechanism and a connecting mechanism. The fixing mechanism includes a mounting rod, a plug-in slot, a positioning slot and a reserved hole. The plug-in slot is arranged on the lower surface of the mounting rod, the positioning slot is symmetrically arranged on the side wall of the plug-in slot, and the reserved hole penetrates the surface of the mounting rod and the inner wall of the plug-in slot. The lamp holder mechanism is plugged into the inner side of the fixing mechanism through the connecting mechanism, and the positioning plate is plugged into the inner side of the positioning slot, and the positioning magnet is used to absorb the mounting rod for positioning. When disassembly is required, the lamp holder mechanism can be removed for inspection by simply pulling it downward; the connection between the lamp holder mechanism and the lamp shade mechanism is sealed by the external thread of the lamp shade mechanism, and the air between the lamp holder mechanism and the lamp shade mechanism can be dried by the drying mechanism, so as to effectively prevent the humid air in the lamp shade body from condensing into water droplets and affecting the lighting.

[0004] Traditional lamps are installed at a very high position, usually on the top. The advantage is that the energy is more concentrated, the road information is better displayed, and the safety is improved. In optical microscopy, this technology is called dark field. In the process of lighting, in order to ensure that the driver can adapt to the brightness difference inside and outside the tunnel as quickly as possible, there are certain requirements for the brightness of the lamps. In addition, due to the high height of the lamps, there are certain requirements for the power of the lamps, resulting in high energy consumption. In addition, due to the convex lens, the corners will become dark and blurred, which will lead to insufficient light at the edge of the light spot. In view of this, we propose a tunnel dark field lighting device. Utility Model Content

[0005] The utility model aims to provide a tunnel dark field lighting device, which solves the problems of large energy consumption of lamps and insufficient light at the edge of the irradiated light spot.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The tunnel dark field lighting device comprises a base, a connecting block is arranged at the bottom of the base, a lamp tube is fixedly connected to the bottom of the connecting block, a wick is connected to the inner wall of the lamp tube, and the wicks are arranged in a rectangular array, and a Fresnel lens is connected to the bottom of the lamp tube. By arranging the wicks in a rectangular array, the irradiated light is emitted in a rectangular shape. Compared with circular light, when multiple groups of lamps are used at the same time, it can be avoided that the circular light spots formed by the light irradiation overlap and intersect to fully cover the tunnel road surface, because the edges of the circular light spots are arc-shaped, which results in the interlaced part of the light not being fully utilized, while the rectangular light can be evenly arranged in sequence to avoid the light source being unable to be used due to the interlacing of the light. The use of Fresnel lens can improve the utilization rate of the light of the lamp. By using Fresnel lens, the phenomenon of darkening and blurring of corners caused by using ordinary convex lens can be avoided. This is because the refraction of light only occurs at the interface of the medium. The convex lens is thicker, and the part of the light that propagates in a straight line in the glass will cause the light to attenuate. The Fresnel lens removes the part that propagates in a straight line and only retains the curved surface where refraction occurs. While saving a lot of materials, it can achieve the same focusing effect. The Fresnel lens looks like a piece of glass with countless concentric circles, but it can achieve the effect of a convex lens. When the projection light source is parallel light, the brightness of the image can be kept consistent after convergence and projection to ensure the lighting effect of the lamp.

[0008] Preferably, a plug is connected to the top of the connection block, and a socket is connected to the bottom of the base. The plug is plugged into the socket, and power is turned on by inserting the plug into the socket, so that it is convenient to use.

[0009] Preferably, a fitting block is connected to the top of the connecting block outside the plug, and the fitting block fits with the socket. The fitting block is arranged at the connection to fit the socket to ensure the sealing of the connection between the plug and the socket, thereby preventing the lamp from getting damp due to the humid environment of the tunnel.

[0010] Preferably, a sealing groove is provided on the top of the bonding block, and the sealing groove is annular in shape and evenly distributed. By providing multiple groups of sealing grooves on the surface of the bonding block, the connection is made to be concave and convex in a staggered and circuitous manner to form a maze structure, which can further increase the sealing performance and prevent moisture in the tunnel from invading the lamps and causing damage.

[0011] Preferably, a sealing strip is connected to the edge of the bonding surface of the bonding block, and mounting holes are provided at the four corners of the inner wall of the base to increase the sealing performance.

[0012] Preferably, C-shaped pins are respectively provided on both sides of the socket, and limiting holes are respectively provided on both sides of the socket and the connecting block, and both ends of the C-shaped pin are respectively inserted into the inner walls of the limiting holes at corresponding positions. By inserting the C-shaped pin into the limiting holes, it is convenient to limit the socket and the connecting block to avoid the socket and the connecting block from detaching, thereby ensuring the stability of the connection.

[0013] Preferably, magnetic blocks are respectively provided inside both ends of the C-shaped pin, and a magnetic block is provided on the inner wall of the limiting hole. By providing a magnetic block at the connection between the C-shaped pin and the limiting hole, the C-shaped pin can be prevented from falling off, and the removal of the C-shaped pin is also convenient.

[0014] By means of the above technical solution, the utility model provides a tunnel dark field lighting device, which has at least the following beneficial effects:

[0015] First, the utility model arranges the lamp cores in a rectangular array so that the irradiated light is emitted in a rectangular shape. Compared with the circular light, when multiple sets of lamps are used at the same time, the circular light spots formed by the light irradiation need to overlap and intersect to fully cover the tunnel road surface, resulting in the intersecting part of the light not being fully utilized. The rectangular light can be evenly arranged in sequence to avoid the situation where the light source cannot be fully utilized due to the interlacing of the light, and the utilization rate of the light of the lamp can be improved. By adopting the Fresnel lens, it can be avoided that the use of ordinary convex lenses The lens will appear dark and blurred at the corners. This is because the refraction of light only occurs at the interface of the medium. The convex lens is thicker, and the part of the light that propagates in a straight line in the glass will cause the light to attenuate. The Fresnel lens removes the part that propagates in a straight line and only retains the curved surface where refraction occurs. While saving a lot of materials, it can achieve the same focusing effect. The Fresnel lens looks like a piece of glass with countless concentric circles, but it can achieve the effect of a convex lens. When the projection light source is parallel light, the brightness of the image can be kept consistent after convergence and projection, so as to ensure the lighting effect of the lamp and reduce the demand for lamp power.

[0016] 2. The utility model provides a fitting block to fit the socket at the connection to ensure the sealing of the connection between the plug and the socket, thereby preventing the lamp from getting damp due to the humid environment of the tunnel. In addition, multiple sets of sealing grooves are provided on the surface of the fitting block to make the connection present an alternating concave and convex structure to form a maze structure, thereby further increasing the sealing and preventing moisture in the tunnel from invading the lamp and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the base in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the connecting block in the utility model.

[0022] In the figure: 1. base; 11. mounting hole; 12. socket; 2. connecting block; 21. plug; 22. fitting block; 23. sealing groove; 24. sealing strip; 3. lamp tube; 31. Fresnel lens; 32. wick; 4. C-shaped pin; 41. limit hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] Tunnel dark field lighting device, such as Figure 1-Figure 4As shown, the tunnel dark field lighting device includes a base 1, a connecting block 2 is arranged at the bottom of the base 1, a lamp tube 3 is fixedly connected to the bottom of the connecting block 2, a wick 32 is connected to the inner wall of the lamp tube 3, and the wick 32 is arranged in a rectangular array, and a Fresnel lens 31 is connected to the bottom of the lamp tube 3. By arranging the wicks 32 in a rectangular array, the irradiated light is emitted in a rectangular shape. Compared with circular light, when multiple groups of lamps are used at the same time, it can be avoided that the circular light spots formed by the light irradiation overlap and intersect to fully cover the tunnel road surface, because the edges of the circular light spots are arc-shaped, which results in the intersection of the light spots being not fully utilized. The rectangular light can be evenly arranged in sequence to avoid the situation where the light source cannot be fully utilized due to the intersection of the light, and the utilization rate of the light of the lamp can be improved. By adopting the Fresnel lens 31, it can be avoided Avoid the phenomenon of darkening and blurring of corners due to the use of ordinary convex lenses. This is because the refraction of light only occurs at the interface of the medium. The convex lens is thicker, and the part of the light that propagates in a straight line in the glass will cause the light to attenuate. The Fresnel lens 31 removes the part of the straight line propagation and only retains the curved surface where the refraction occurs. While saving a lot of materials, the same focusing effect is achieved. The Fresnel lens 31 looks like a piece of glass with countless concentric circles, but it can achieve the effect of a convex lens. When the projection light source is parallel light, the brightness of the image can be kept consistent after convergence and projection to ensure the lighting effect of the lamp. The top of the connecting block 2 is connected to a plug 21, and the bottom of the base 1 is connected to a socket 12. The plug 21 is plugged into the socket 12. By inserting the plug 21 into the socket 12, power is turned on to facilitate use and later maintenance of the lamp.

[0026] In this embodiment, the base 1 is used to be fixed on the surface of the wall. The plug 21 is inserted into the socket 12 to turn on the power. The wicks 32 are arranged in a rectangular array so that the irradiated light is emitted in a rectangular shape. Compared with the circular light, it can be avoided that when multiple groups of lamps are used at the same time, the edges of the circular light spots are arc-shaped, which requires the circular light spots formed by the light irradiation to overlap and intersect with each other to fully cover the tunnel road surface, resulting in the intersecting part of the light not being fully utilized. The rectangular light can be evenly arranged in sequence to avoid the situation where the light source cannot be fully utilized due to the interlacing of the light, thereby improving the utilization rate of the light of the lamp.

[0027] Example 2

[0028] like Figure 2 , Figure 3 , Figure 4As shown, a fitting block 22 is connected to the top of the connection block 2 at the outside of the plug 21, and the fitting block 22 fits with the socket 12. The fitting block 22 is arranged at the connection to fit the socket 12 to ensure the sealing of the connection between the plug 21 and the socket 12, so as to prevent the lamp from getting damp due to the humid environment of the tunnel. A sealing groove 23 is provided on the top of the fitting block 22. The sealing groove 23 is annular in shape and evenly distributed. By providing a plurality of groups of sealing grooves 23 on the surface of the fitting block 22, the connection is formed into a concave and convex maze structure, which can further increase the sealing performance and prevent the moisture in the tunnel from invading the lamp and causing damage. A sealing strip 24 is connected to the edge of the fitting surface of the fitting block 22, and sealing strips 24 are provided at the four corners of the inner wall of the base 1. The mounting hole 11 is used to increase the sealing performance. C-shaped pins 4 are respectively provided on both sides of the socket 12. Limiting holes 41 are respectively provided on both sides of the socket 12 and the connecting block 2. The two ends of the C-shaped pin 4 are respectively plugged into the inner walls of the limiting holes 41 at the corresponding positions. By inserting the C-shaped pin 4 into the limiting holes 41, it is convenient to limit the socket 12 and the connecting block 2 to avoid the socket 12 and the connecting block 2 from being separated to ensure the stability of the connection. Magnetic blocks are respectively provided inside the two ends of the C-shaped pin 4, and the inner wall of the limiting hole 41 is provided with a magnetic block. By providing a magnetic block at the connection between the C-shaped pin 4 and the limiting hole 41, it is possible to avoid the C-shaped pin 4 from falling off, and it is also convenient to disassemble the C-shaped pin 4.

[0029] In this embodiment, a fitting block 22 is provided at the connection to fit the socket 12 to ensure the sealing of the connection where the plug 21 is inserted into the socket 12. A fitting block 22 is provided at the connection to fit the socket 12 to ensure the sealing of the connection where the plug 21 is inserted into the socket 12. A plurality of sealing grooves 23 are provided on the surface of the fitting block 22 so that the connection presents a concave and convex maze structure, which can further increase the sealing and prevent moisture in the tunnel from invading the lamp and causing damage. A magnetic block is provided at the connection between the C-shaped pin 4 and the limiting hole 41 to prevent the C-shaped pin 4 from falling off and facilitate the removal of the C-shaped pin 4. A magnetic block is provided at the connection between the C-shaped pin 4 and the limiting hole 41 to prevent the C-shaped pin 4 from falling off.

[0030] When the tunnel dark field lighting device of the utility model is in use, the base 1 is used to be fixed on the surface of the wall, and the plug 21 is inserted into the socket 12 to turn on the power. The wicks 32 are arranged in a rectangular array so that the irradiated light is emitted in a rectangular shape. When multiple groups of lamps are used at the same time, they can be evenly arranged in sequence and connected to each other to avoid the situation where the light source cannot be fully utilized due to the staggered light, which can improve the utilization rate of the light of the lamp. The fitting block 22 is provided at the connection to fit the socket 12 to ensure the sealing of the connection where the plug 21 is inserted into the socket 12. The fitting block 22 is provided at the connection to fit the socket 12 to ensure the sealing of the connection where the plug 21 is inserted into the socket 12. By providing multiple groups of sealing grooves 23 on the surface of the fitting block 22, the connection is a concave and convex maze structure, which can further increase the sealing and avoid the situation where moisture in the tunnel invades the lamp and causes damage. By providing a magnetic suction block at the connection between the C-shaped plug 4 and the limiting hole 41, the C-shaped plug 4 can be prevented from falling off, and the C-shaped plug 4 is also convenient to disassemble.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel dark field lighting device, comprising a base (1), characterized in that: A connecting block (2) is provided at the bottom of the base (1); a lamp tube (3) is fixedly connected to the bottom of the connecting block (2); a lamp wick (32) is connected to the inner wall of the lamp tube (3); and the lamp wicks (32) are arranged in a rectangular array; and a Fresnel lens (31) is connected to the bottom of the lamp tube (3).

2. The tunnel dark field lighting device according to claim 1, characterized in that: The top of the connection block (2) is connected to a plug (21), the bottom of the base (1) is connected to a socket (12), and the plug (21) is plugged into the socket (12).

3. The tunnel dark field lighting device according to claim 1, characterized in that: A fitting block (22) is connected to the top of the connection block (2) at a position outside the plug (21), and the fitting block (22) fits with the socket (12).

4. The tunnel dark field lighting device according to claim 3, characterized in that: The top of the fitting block (22) is provided with a sealing groove (23), and the sealing groove (23) is annular in shape and evenly distributed.

5. The tunnel dark field lighting device according to claim 3, characterized in that: The edge of the bonding surface of the bonding block (22) is connected with a sealing strip (24), and the four corners of the inner wall of the base (1) are provided with mounting holes (11).

6. The tunnel dark field lighting device according to claim 2, characterized in that: C-shaped plug pins (4) are respectively provided on both sides of the socket (12), and limiting holes (41) are respectively provided on both sides of the socket (12) and the connection block (2), and both ends of the C-shaped plug pin (4) are respectively plugged into the inner walls of the limiting holes (41) at corresponding positions.

7. The tunnel dark field lighting device according to claim 6, characterized in that: Magnetic blocks are respectively arranged inside the two ends of the C-shaped plug pin (4), and a magnetic block is arranged on the inner wall of the limiting hole (41).

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