Rail car roof lamp and rail car

Abstract

The utility model discloses a rail car roof lamp and a rail car, which comprise two light source plates arranged on a top plate of the rail car; the two light source plates are distributed on the two sides of the top plate in the width direction of the rail car. The light guide film is arranged on the top plate; the light guide plate is located between the two light source plates and arranged opposite to the light source plates. The two sealing strips are distributed along the width direction of the rail car and are in one-to-one correspondence with the light source plates; the sealing strip is positioned on one side of the light source plate and the light guide film deviating from the top plate; one part of the sealing strip is attached to the light source plate, and the other part is attached to the light guide film. The two light source plates are arranged on the two sides of the edge of the top plate, the light guide film is arranged between the two light source plates, the light source plates and the light guide film form side light arrangement, and light rays emitted by the light source plates enter the light guide film from the side face of the light guide film and are evenly distributed after being reflected, refracted and scattered for multiple times in the light guide film. The light source is prevented from forming bright spots or dark areas in the center of the top plate, illumination of the whole compartment is more uniform, and the illumination effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicles, in particular to a roof lamp for a rail vehicle and a rail vehicle. Background Art

[0002] In the prior art, lighting is usually provided on the roof plate of a rail vehicle by combining a light source and a light guide plate; specifically, after the light source is positioned on the roof plate of the rail vehicle, the light guide plate is positioned on the side of the light source away from the roof plate (i.e., below the light source), so as to form a direct-down light source arrangement.

[0003] The light source arranged in a direct-down manner causes the light to be mainly concentrated at the position directly below the light source, while other areas are relatively dark; this uneven light distribution will form bright spots and shadows on the roof surface, making the light in some areas inside the vehicle too bright and the light in other areas insufficient, thus affecting the overall lighting effect of the carriage.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a roof lamp for a rail vehicle and a rail vehicle aiming at the above defects of the prior art, aiming to solve the problem that the overall lighting effect of the carriage is poor due to the light source distribution on the roof of the existing rail vehicle.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0007] A roof lamp for a rail vehicle, comprising:

[0008] Two light source plates, which are used to be arranged on the roof plate of the rail vehicle; the two light source plates are distributed on both sides of the roof plate along the width direction of the rail vehicle;

[0009] A light guide film, which is arranged on the roof plate; the light guide plate is located between the two light source plates and is arranged opposite to the light source plates;

[0010] Two sealing strips, which are distributed along the width direction of the rail vehicle and correspond to the light source plates one by one; the sealing strips are located on the side of the light source plates and the light guide film away from the roof plate; a part of each sealing strip is attached to the light source plate, and a part of each sealing strip is attached to the light guide film.

[0011] For the roof lamp for a rail vehicle, the thickness of the light source plate is less than the thickness of the light guide film.

[0012] For the roof lamp for a rail vehicle, the thickness of the light source plate is 1 / 4 of the thickness of the light guide film.

[0013] For the roof lamp for a rail vehicle, there is a gap between the light source plate and the light guide film.

[0014] For the overhead rail car lamp, on one side of the sealing strip away from the top plate is a flat surface; on the side of the sealing strip close to the top plate, there are a first flat surface, a second flat surface and an avoidance inclined surface; the first flat surface is in contact with the light source plate, the second flat surface is in contact with the light guide film, the avoidance inclined surface is connected to the first flat surface and the second flat surface respectively, and the avoidance inclined surface inclines towards the light guide film from top to bottom.

[0015] For the overhead rail car lamp, a part of the light source plate corresponds to the avoidance inclined surface and there is a gap between them.

[0016] For the overhead rail car lamp, the width of the contact between the sealing strip and the light source plate is greater than half of the width of the light source plate.

[0017] For the overhead rail car lamp, the light guide film is a PC light guide film or a PMMA light guide film.

[0018] For the overhead rail car lamp, a plurality of etching patterns are provided on the light guide film to form a plurality of light scattering points on the light guide film.

[0019] An overhead rail car includes the overhead rail car lamp as described in any one of the above.

[0020] Advantageous effects: Both of the light source plates are arranged on both sides of the edge of the top plate, and the light guide film is arranged between the two light source plates, so that the distribution of the light source plate and the light guide film forms a side light arrangement; one side light-emitting surface of the light source plate is arranged opposite to the side surface of the light guide film, so that after the light emitted by the light source plate enters the light guide film from the side surface of the light guide film, it undergoes multiple reflections, refractions and scatterings in the light guide film and is evenly distributed on the entire surface of the car roof. This way can avoid the bright spots or dark areas formed by the light source in the center of the top plate, make the lighting of the entire carriage more uniform, and improve visual comfort and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the overhead rail car lamp in the present utility model;

[0022] Figure 2 is Figure 1 a partial enlarged view of part A in

[0023] Figure 3 is a schematic structural view of the sealing strip in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The embodiments of the present utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model and not for limiting the protection scope of the present utility model.

[0025] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0026] The present utility model provides an overhead rail car lamp, as Figure 1 shown. The overhead rail car lamp includes a light source board 1, a light guide film 2, and a sealing strip 3. Among them, there are two light source boards 1, one light guide film 2, and two sealing strips 3. The light source board 1 is used to be arranged on the top board 100 of the rail car. The two light source boards 1 are distributed on both sides of the top board 100 along the width direction of the rail car. The light guide film 2 is arranged on the top board 100. The light guide film 2 is located between the two light source boards 1 and is arranged opposite to the light source boards 1. The two sealing strips 3 are distributed along the width direction of the rail car and correspond to the light source boards 1 one by one. The sealing strip 3 is located on the side of the light source board 1 and the light guide film 2 facing away from the top board 100. A part of the sealing strip 3 is attached to the light source board 1, and a part is attached to the light guide film 2.

[0027] Specifically, the two light source boards 1 are both arranged on both sides of the edge of the top board 100, and the light guide film 2 is arranged between the two light source boards 1, so that the distribution of the light source board 1 and the light guide film 2 forms a side light arrangement. One side light-emitting surface of the light source board 1 is arranged opposite to the side surface of the light guide film 2, so that the light emitted by the light source board 1 enters the light guide film 2 from the side surface of the light guide film 2, and after multiple reflections, refractions, and scatterings in the light guide film 2, it is evenly distributed on the surface of the entire car roof. This method can avoid bright spots or dark areas formed by the light source in the center of the top board 100, make the lighting of the entire carriage more uniform, and improve visual comfort and aesthetics.

[0028] Meanwhile, along the width direction of the top plate 100, the light source plate 1 and the light guide film 2 are arranged in a staggered manner and do not overlap, so that the light source plate 1 can be designed to be thinner, and at the same time, the thickness of the light guide film 2 can also be smaller. This not only provides a thinner appearance of the rail car roof lamp, but also can effectively reduce the space occupation and improve the overall aesthetics.

[0029] In an embodiment of the present application, the thickness of the rail car roof lamp is 5 mm to 10 mm, leaving a larger design space for installing the top plate 100 in the rail car.

[0030] The sealing strip 3 is used to support and position the light source plate 1 and the light guide film 2; the sealing strip 3 can be a transparent sealing strip 3 to enhance the light output rate at both side edges of the top plate 100 and further improve the lighting effect in the carriage.

[0031] The top plate 100 of the rail car mostly adopts a structure with a higher center and lower on both sides in the width direction. Then, the light source plate 1 is arranged on both sides of the top plate 100, which is usually easier to access, making the replacement and maintenance of the light source plate 1 more convenient.

[0032] In an embodiment of the present application, as Figure 2 shown, there is a gap 200 between the light source plate 1 and the light guide film 2.

[0033] If the light source plate 1 is directly in contact with the light guide film 2, the light may be very bright near the light emitting point, while the area far from the light source plate 1 is relatively dim. Therefore, in this embodiment, the light source plate 1 and the light guide film 2 are not in direct contact, but the gap 200 is reserved, which can make the light more evenly distributed on the light guide film 2, avoiding the appearance of bright spots or excessive light concentration locally; by reserving a certain gap 200, the light has enough space for scattering and refraction, and after the light guiding and diffusing effects of the light guide film 2, a uniform light irradiation effect is formed on the roof surface.

[0034] Meanwhile, if the light source plate 1 is directly in contact with the light guide film 2, some light may not effectively enter the interior of the light guide film 2, thus reducing the light guiding efficiency. Therefore, in this embodiment, the light source plate 1 and the light guide film 2 are not in direct contact, but the gap 200 is reserved, which can better control the incident angle of the light, make the light reflect multiple times inside the light guide film 2 at a suitable angle, reduce light loss, and increase the light guiding efficiency.

[0035] A gap 200 is reserved between the light source board 1 and the light guide film 2, which can also increase the flexibility of installation and maintenance; the gap 200 helps to avoid stress concentration problems caused by thermal expansion or material deformation, and provides space for installing, adjusting and replacing the light source board 1 or the light guide film 2, reducing the risk of assembly errors or damage that may be caused by close installation.

[0036] Therefore, in this embodiment, by comprehensively considering factors such as the uniformity of light efficiency, thermal management, service life and installation convenience, a gap 200 is reserved between the light source board 1 and the light guide film 2, making the performance of the track roof lamp more excellent and reliable.

[0037] In an embodiment of the present application, the thickness of the light source board 1 is less than the thickness of the light guide film 2.

[0038] In this embodiment, compared with the light guide film 2, selecting a thinner light source board 1 helps light enter the light guide film 2 at an appropriate angle. The working principle of the light guide film 2 relies on multiple total internal reflections of light to evenly distribute the light within the film; if the light source board 1 is too thick, it will cause the incident angle of light to be too large or irregular, affecting the propagation path and uniformity of light in the light guide film 2, and may also block a part of the light or cause ineffective reflection of light, increasing light loss and reducing light guide efficiency. A thinner light source board 1 can better control the emission angle of light, reduce the obstruction of light, and allow more light to enter the interior of the light guide film 2 more evenly, thereby improving the overall light efficiency of the lamp.

[0039] At the same time, as the main light conduction and diffusion component, the larger thickness of the light guide film 2 helps to maintain its structural integrity and stability, and ensures that it has sufficient optical performance. The thickness of the light source board 1 being less than the thickness of the light guide film 2 can effectively reduce the interference of the light source board 1 on the light guide film 2, making the light guiding and scattering effects of the light guide film 2 more significant, optimizing the light efficiency, reducing light loss, improving the heat dissipation performance, and further enhancing the overall performance and reliability of the track roof lamp.

[0040] In an embodiment of this embodiment, the thickness of the light source board 1 is 1 / 4 of the thickness of the light guide film 2.

[0041] Specifically, the thickness ratio of the light source board 1 and the light guide film 2 should ensure the effective and uniform distribution of light; a thicker light guide film 2 helps to better diffuse light, while a thinner light source board 1 can reduce the overall thickness of the lamp. Moreover, the thickness of the light guide film 2 needs to be sufficient to support the uniform propagation of light and provide sufficient mechanical strength and durability. Therefore, in this embodiment, in order to ensure that the light emitted by the light source board 1 can be uniformly distributed and diffused in the light guide film 2 while providing sufficient mechanical strength and durability, the thickness of the light source board 1 is designed to be 1 / 4 of the thickness of the light guide film 2.

[0042] One side of the sealing strip 3 facing away from the top plate 100 is a plane, that is, the lower surface of the sealing strip 3 is a plane. One side of the sealing strip 3 close to the top plate 100 has a first plane 31, a second plane 32 and an avoidance inclined surface 33 (as Figure 3 shown), that is, the upper surface of the sealing strip 3 is composed of the first plane 31, the second plane 32 and the avoidance inclined surface 33, forming a curved surface.

[0043] Specifically, the first plane 31, the avoidance inclined surface 33 and the second plane 32 are arranged in sequence along the arrangement direction of the corresponding light source board 1 and the light guide film 2; the first plane 31 is attached to the light source board 1, the second plane 32 is attached to the light guide film 2, the avoidance inclined surface 33 is located between the first plane 31 and the second plane 32 and is respectively connected to the first plane 31 and the second plane 32; the avoidance inclined surface 33 inclines downward to the light guide film 2, so that the thickness of the sealing strip 3 corresponding to the light source board 1 is large, while the thickness of the sealing strip 3 corresponding to the light guide film 2 is small, and the thickness of the sealing strip 3 corresponding to the light source board 1 is greater than the thickness of the sealing strip 3 corresponding to the light guide film 2.

[0044] The first plane 31 provides the installation surface of the light source board 1, and the second plane 32 provides the installation surface of the light guide film 2. Then, while the sealing strip 3 supports and positions the light source board 1 and the light guide film 2 from below, it can also ensure the gap 200 between the light source board 1 and the light guide film 2, thereby ensuring the light output effect of the track car roof lamp and increasing the reliability of the track car roof lamp.

[0045] In an embodiment of the present application, the gap 200 corresponds to the avoidance inclined surface 33. Then, the avoidance inclined surface 33 can give way to the gap 200, which can better control the incident angle of light, enable the light to be reflected multiple times inside the light guide film 2 at a suitable angle, reduce light loss, and increase the light guide efficiency.

[0046] In an embodiment of the present application, a part of the light source board 1 corresponds to the avoidance inclined surface 33 and there is a gap between the part and the avoidance inclined surface 33.

[0047] Specifically, the lower surface of the light source board 1 does not completely fit with the sealing strip 3. The lower surface of the light source board 1 on the side away from the light guide film 2 fits with the sealing strip 3, while the lower surface of the light source board 1 on the side close to the light guide film 2 is separated from the sealing strip 3 by the avoidance inclined surface 33, so that one end of the light source board 1 close to the light guide film 2 is in a suspended state, which can make the light spread and propagate to the edge of the light guide film 2 more fully. This can ensure that the light guide film 2 receives light evenly over the entire area, thus avoiding the reduction of light efficiency or uneven light caused by the complete tight fit of the light source board 1 and the sealing strip 3, which affects the light propagation path in the light guide film 2. At the same time, such a design can effectively reduce the spot phenomenon, improve the light efficiency, and ensure the stability and reliability of the track car roof lamp.

[0048] In an embodiment of the present application, the width of the sealing strip 3 in contact with the light source board 1 is greater than 1 / 2 of the width of the light source board 1.

[0049] In this embodiment, the width of the sealing strip 3 in contact with the light source board 1 is greater than 1 / 2 of the width of the light source board 1 and less than the width of the light source board 1, so that the sealing strip 3 can generate sufficient support strength for the light source board 1 while minimizing the impact on the light efficiency of the light guide film 2.

[0050] In an embodiment of the present application, the light guide film 2 is a PC (polycarbonate) light guide film or a PMMA (polymethyl methacrylate) light guide film.

[0051] Specifically, the PC light guide film has extremely high impact strength and can well resist external force impact and mechanical damage. In the environment of rail vehicles, this characteristic helps to ensure the long-term safety and stability of the light guide film, reducing damage caused by factors such as vibration and collision; during the operation of rail vehicles, they may be exposed to various environmental temperatures, and the temperature resistance of the PC light guide film can ensure its stable optical and physical properties under various conditions; at the same time, the PC light guide film has good flexibility and is not easy to crack or break, and this flexibility makes it easier to bend and fix during installation, with strong adaptability, which is beneficial for use in the complex arcs and shapes at the roof edge.

[0052] The PMMA light guide film has excellent transparency and optical properties, can provide a visual effect close to that of glass, and has better tolerance to ultraviolet rays, is not easy to yellow or become brittle, and is suitable for occasions where it is exposed to sunlight or other strong light for a long time.

[0053] In one embodiment of the present application, a plurality of etching patterns are provided on the light guide film 2 to form a plurality of light scattering points on the light guide film 2. The etching pattern is engraved on the surface or inside of the light guide film 2 by a laser device, and the scattering and reflection of light are controlled by changing the optical properties of the film surface or inside, and the light scattering points are formed by changing the microstructure of the material surface.

[0054] In one implementation of this embodiment, the etching pattern is a star pattern, thereby forming a visual effect of a starry sky ceiling.

[0055] Specifically, according to actual needs, the actual star pattern, including the size, distribution and density of the star pattern, is designed, and a laser engraving machine is used to accurately engrave tiny depressions or notches on the light guide film 2 according to the designed star pattern; the engraving depth and shape can be adjusted as needed to control the brightness and scattering effect of each "star".

[0056] The present application also provides a rail vehicle, the rail vehicle comprising the rail vehicle roof light as described in any one of the above items.

[0057] In summary, the present application provides a rail car ceiling light and a rail car, which includes two light source panels for being arranged on the roof of the rail car; the two light source panels are distributed on both sides of the roof along the width direction of the rail car; a light guide film is arranged on the roof; the light guide plate is located between the two light source panels and arranged opposite to the light source panels; two sealing strips are distributed along the width direction of the rail car and correspond to the light source panels one by one; the sealing strip is located on the side of the light source panel and the light guide film away from the roof; a part of the sealing strip is attached to the light source panel, and a part of the sealing strip is attached to the light guide film. The two light source panels are arranged on both sides of the edge of the roof, and the light guide film is arranged between the two light source panels, so that the distribution of the light source panel and the light guide film forms a side light arrangement; a side light emitting surface of the light source panel is arranged opposite to the side of the light guide film, so that the light emitted by the light source panel enters the light guide film from the side of the light guide film, and is evenly distributed on the surface of the entire roof after multiple reflections, refractions and scatterings in the light guide film. This approach can avoid bright spots or dark areas formed by the light source in the center of the roof, making the lighting of the entire compartment more uniform and improving visual comfort and aesthetics.

[0058] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A track car ceiling light, characterized in that: It includes: Two light source panels are used to be arranged on the top plate of the rail vehicle; the two light source panels are distributed on both sides of the top plate along the width direction of the rail vehicle; A light guide film is arranged on the top plate; the light guide film is located between the two light source plates and is arranged opposite to the light source plates; Two sealing strips are distributed along the width direction of the rail car and correspond to the light source panels one by one; the sealing strips are located on the side of the light source panel and the light guide film away from the top plate; a part of the sealing strip is in contact with the light source panel, and a part of the sealing strip is in contact with the light guide film.

2. The rail car ceiling light according to claim 1, characterized in that: The thickness of the light source plate is smaller than the thickness of the light guide film.

3. The rail car ceiling light according to claim 2, characterized in that: The thickness of the light source plate is 1 / 4 of the thickness of the light guide film.

4. The rail car ceiling light according to claim 1, characterized in that: A gap is formed between the light source plate and the light guide film.

5. The rail car ceiling light according to claim 1, characterized in that: The side of the sealing strip facing away from the top plate is a plane; the side of the sealing strip close to the top plate has a first plane, a second plane and a avoidance slope; the first plane is in contact with the light source panel, the second plane is in contact with the light guide film, the avoidance slope is connected with the first plane and the second plane respectively, and the avoidance slope is inclined from top to bottom toward the light guide film.

6. The rail car ceiling light according to claim 5, characterized in that: A portion of the light source plate corresponds to the avoidance inclined surface, and a gap is formed between the portion of the light source plate and the avoidance inclined surface.

7. The rail car ceiling light according to claim 1, characterized in that: The width of the sealing strip and the light source board being attached is greater than 1 / 2 of the width of the light source board.

8. The rail car ceiling light according to claim 1, characterized in that: The light-guiding film is a PC light-guiding film or a PMMA light-guiding film.

9. The rail car ceiling light according to claim 1, characterized in that: A plurality of etching patterns are arranged on the light guide film to form a plurality of light scattering points on the light guide film.

10. A rail vehicle, characterized in that: It comprises the rail car ceiling light as described in any one of claims 1-9.

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