JP6580841B2 - Indirect lighting device - Google Patents

Description

  The present invention relates to an indirect lighting device provided in a vehicle interior.

  Conventionally, as an illumination device provided in a room of a railway vehicle or the like, an indirect illumination method in which light from a light source such as a fluorescent tube or an LED is reflected on a reflection surface and the room is illuminated with the reflected light (indirect light) is known. ing. As such an indirect lighting device, a device including a casing attached to the ceiling of a vehicle, an LED light source provided inside the casing, and a reflecting surface that reflects light from the LED light source has been proposed. (For example, refer to Patent Document 1). In the indirect illumination device described in Patent Document 1, the reflection surface is provided on the inner surface (lower surface) of the curved portion that extends in a circular arc shape to the side of the casing and the tip portion is curved downward, and the surface on which the light reflection efficiency increases. Processing (white paint and mirror finish) is applied.

JP 2014-49263 A

  A conventional indirect lighting device as described in Patent Document 1 is configured to irradiate light from a light source onto a concave reflecting surface and reflect the light on the entire reflecting surface to illuminate the room. . In other words, as is clear from the surface treatment that increases the light reflection efficiency on the reflecting surface, the conventional indirect lighting device functions as a concave mirror on the inner surface of the curved portion to increase the brightness of the illumination and illuminate the interior brightly. It is designed with the intention. For this reason, when looking up from the indoor side, the inner surface of the curved portion of the lighting device is visually recognized as emitting light with high brightness, and the passenger may feel dazzling, and the brightness with the surrounding ceiling surface It is difficult to enhance the integrated beauty of the entire ceiling surface.

  Therefore, an object of the present invention is to provide an indirect lighting device that can reduce glare and enhance the beauty of the ceiling surface.

In order to achieve the above object, an indirect lighting device according to the present invention is an indirect lighting device provided in a vehicle interior, and includes at least one ceiling member constituting a ceiling surface of the interior of the vehicle, and a vehicle width direction on the ceiling member. A light source that emits light from one side of the vehicle, and the ceiling member is elongated along the vehicle front-rear direction, and has a curved indoor surface that protrudes downward in the middle in the vehicle width direction. The interior surface of the ceiling member is formed on the one side in the vehicle width direction and reflects the light from the light source, and the light from the light source is located on the other side of the reflection surface portion. A non-irradiated surface portion that is not directly irradiated, and in the vicinity of one edge in the vehicle width direction of the reflecting surface portion, the bending direction is the same as the intermediate portion in the vehicle width direction and has a curvature larger than the curvature of the intermediate portion. JP that large curvature portion having is provided To.

According to such an invention, light is reflected by the reflecting surface portion located on one side of the indoor surface of the ceiling member by irradiating the ceiling member with light from the light source from one side (side) in the vehicle width direction. At the same time, the non-irradiated surface portion located on the other side is not directly irradiated with light and no reflected light is generated. And the intermediate part of the vehicle width direction has a curved indoor surface which protrudes downward, and the ceiling member is formed, so that the angle formed by the light beam from the light source and the reflecting surface part is directed toward the other side. Since the angle gradually decreases and the angle becomes zero at the boundary position between the reflective surface portion and the non-irradiated surface portion, indirect illumination light is obtained in which the brightness of reflected light from the reflective surface portion gradually decreases toward this boundary position. It is done. Therefore, by reflecting the light from the side with respect to the reflective surface portion to be a convex surface, the reflection direction of the reflected light can be diffused, and the glare when looking up at the ceiling surface can be reduced, The aesthetics of the ceiling surface can be enhanced by the indirect illumination light whose luminance gradually decreases.
Further, since the large curvature portion is provided in the vicinity of the one side edge in the vehicle width direction in the reflection surface portion, light from the light source is irradiated to the large curvature portion at a large crossing angle. The amount of reflected light reflected by the portion increases. Therefore, it is possible to generate indirect illumination light in which the luminance of the reflected light from the large curvature portion in the reflection surface portion is increased, and in the reflection surface portion other than the large curvature portion, the luminance gradually decreases toward the other side. . The aesthetic appearance of the ceiling surface can be further enhanced by such indirect illumination light having a luminance change.

  Furthermore, in the indirect lighting device of the present invention, the ceiling member is composed of a plurality of adjacent ceiling members in the vehicle width direction, and one of the ceiling members located on the other side in the vehicle width direction among the adjacent ceiling members. The edge is preferably provided so as to overlap the indoor side of the ceiling member located on one side.

  According to this configuration, in each of the ceiling members adjacent in the vehicle width direction, indirect illumination light is obtained in which the brightness of the reflected light from the reflecting surface portion gradually decreases toward the other side as described above. Therefore, when viewed as a whole of the plurality of ceiling members, indirect illumination light composed of a plurality of vertical stripes of reflected light whose brightness changes can be obtained, and the brightness of the entire illumination light is ensured while suppressing the brightness of each reflected light. At the same time, the beauty of the ceiling surface can be further enhanced. Furthermore, since the edges of adjacent ceiling members are provided to overlap each other, a contrast that darkens the ceiling member on one side and brightens the ceiling member on the other side appears in this overlapping portion, and the shadow is emphasized. Illumination light can be obtained, and the beauty of the ceiling surface can be further enhanced.

  Moreover, in the indirect lighting apparatus of this invention, it is preferable that the indoor surface of the said ceiling member is finished in the dull metallic color.

  According to this configuration, the interior surface of the ceiling member is finished in a dull metallic color, so that it is possible to further reduce the glare of the reflected light reflected by the reflecting surface portion, and to illuminate light by the calm reflected light Can be obtained.

  In the indirect lighting device according to the present invention, the ceiling member is provided as a pair that is symmetrical with respect to the central axis in the vehicle width direction, and the light sources are provided as a pair on the outer side in the vehicle width direction. It is preferable to irradiate the light toward the center of the vehicle, or to irradiate the light toward the outside in the vehicle width direction by providing a pair at the center in the vehicle width direction.

  According to this configuration, the pair of ceiling members is provided symmetrically with respect to the center axis in the vehicle width direction, and light from the light source is emitted from the outside in the vehicle width direction toward the center side with respect to the pair of ceiling members. Or irradiating light from the light source toward the outside from the center side in the vehicle width direction, it is possible to generate indirect illumination light that is symmetrical with respect to the central axis of the vehicle. Therefore, since the symmetrical indirect illumination light can be generated over a wide range of the ceiling surface, the beauty of the ceiling surface can be further enhanced while uniforming the brightness at each position in the room.

  According to the indirect lighting device of the present invention as described above, the interior surface of the ceiling member is formed with a convex surface convex downward, and the light from the light source is irradiated and reflected from the side to the reflection surface portion. Thereby, while being able to reduce the glare of reflected light, the aesthetics of a ceiling surface can be improved by obtaining the indirect illumination light from which the brightness | luminance of reflected light changes.

1 is a perspective view showing a section of a vehicle provided with an indirect lighting device according to an embodiment of the present invention. FIG. 2 is a perspective view showing a cross section of a ceiling portion in the vehicle. It is a longitudinal cross-sectional view which shows the ceiling and inner wall of the said vehicle. It is sectional drawing and a top view explaining an effect | action of the indirect lighting apparatus in the ceiling of the said vehicle. It is sectional drawing explaining the other effect | action of the indirect lighting apparatus in the ceiling of the said vehicle.

  Hereinafter, as one embodiment of the present invention, an indirect lighting device used as in-room lighting of a railway vehicle will be described with reference to FIGS. 1 and 2 are perspective views showing a cross section of an interior material of a guest room as a part of a railway vehicle, in which an outer shell body and a structural material of the railway vehicle are omitted. Hereinafter, in each figure, the vehicle longitudinal direction, which is the traveling direction of the railway vehicle, is indicated by an arrow X as the X direction, the vehicle width direction orthogonal to the X direction is indicated by the arrow Y, and the X direction and the Y direction An orthogonal height direction is indicated by an arrow Z with the Z direction as the Z direction. Moreover, each figure of FIGS. 1-5 is sectional drawing which carried out the cross section of the rail vehicle by the YZ plane orthogonal to a X direction.

  The interior material of the guest room includes a floor portion F, left and right inner wall portions W rising from the floor portion F, a shoulder portion S extending inward in the Y direction continuously from the upper end portion of each inner wall portion W, and left and right It is formed in the whole cylinder shape by which the four sides were enclosed by the ceiling part C provided over the shoulder part S. FIG. Further, opposed plates P that form spaces P <b> 1 facing the shoulders S are provided below the left and right shoulders S on the indoor side. The ceiling part C is configured to include a first ceiling panel C1 provided at the center in the Y direction and a pair of ceiling member sets CA provided side by side on the left and right sides of the first ceiling panel C1.

  The pair of left and right ceiling member sets CA are configured to have second to fifth ceiling panels C2 to C5 as four ceiling members. Specifically, the second ceiling panel C2 is provided outside the first ceiling panel C1 in the Y direction, and the third ceiling panel C3 is provided outside the second ceiling panel C2 in the Y direction. The third ceiling panel C3. The fourth ceiling panel C4 is provided on the outer side in the Y direction, the fifth ceiling panel C5 is provided on the outer side in the Y direction of the fourth ceiling panel C4, and the outer edge in the Y direction of the fifth ceiling panel C5 is the shoulder S. Are provided continuously. That is, in the pair of left and right ceiling member sets CA, the second ceiling panels C2, the third ceiling panels C3, the fourth ceiling panels C4, and the fifth ceiling panels C5 sandwich the central axis in the vehicle width direction, respectively. Are provided in a pair symmetrically.

  In addition, the inner edge in the Y direction of the second ceiling panel C2 is provided above the outer edge in the Y direction of the first ceiling panel C1 via a gap, and the inner edge in the Y direction of the third ceiling panel C3 is The Y-direction inner edge of the fourth ceiling panel C4 is located above the Y-direction outer edge of the third ceiling panel C3. The Y direction inner end edge of the fifth ceiling panel C5 is provided above the Y direction outer end edge of the fourth ceiling panel C4 so as to overlap with the gap. In each of the ceiling panels C2 to C5, each vehicle width direction (Y direction) outer side is defined as one side, and the vehicle width direction (Y direction) center side is defined as the other side. The side edge and the inner edge in the Y direction may be referred to as the other side edge.

  The first ceiling panel C1 and the second to fifth ceiling panels C2 to C5 are each formed from a steel plate, an aluminum plate, a resin plate, or the like, and the surface thereof is finished by painting, plating, film, or the like. The surface finish of these ceiling panels C1 to C5 is preferably a dull metallic color with low glossiness, and has irregularities such as satin or hairline to diffuse light. In addition, the ceiling panels C1 to C5 are each elongated along the vehicle front-rear direction (X direction) and are formed in a curved shape in which an intermediate portion in the vehicle width direction (Y direction) protrudes downward.

  In the guest room of the railway vehicle as described above, as the indirect lighting device according to the present embodiment, three types of first indirect lighting 1, second indirect lighting 2, and third indirect lighting 3 are provided. . The 1st indirect illumination 1 is provided in the space P1 of the shoulder part S and the opposing board P, and is provided with the 1st light source 1A which irradiates light to the inside from the outer side of a vehicle width direction to ceiling panels C1-C5. The second indirect illumination 2 is provided in the space CB on the back side of the first ceiling panel C1, and a second light source 2A that irradiates light from the center side in the vehicle width direction to the slits (gap) of the ceiling panels C1 to C5. Prepare. The third indirect illumination 3 includes a third light source 3A that is provided in a space P1 between the shoulder portion S and the opposing plate P and that irradiates light on the inner wall portion W from above.

  In the first light source 1A, for example, a plurality of white LEDs are provided side by side in the vehicle front-rear direction and the height direction, and light from these LEDs can be emitted as parallel light. The emitted light L1 emitted from the first light source 1A passes through the gap between the shoulder S and the counter plate P and is irradiated obliquely upward in the Y direction. In the second light source 2A, for example, a plurality of LEDs whose emission colors can be switched are provided side by side in the vehicle front-rear direction, and light from these LEDs can be emitted as radiated light. The emitted light L2 emitted from the second light source 2A is irradiated outward in the Y direction and obliquely downward toward the back of the ceiling panels C1 to C5.

  For example, the third light source 3A is provided with a plurality of white LEDs arranged in the vehicle front-rear direction, and can emit light from these LEDs as radiated light. The emitted light L3 emitted from the second light source 3A is irradiated through the gap between the shoulder portion S and the counter plate P to the outside in the Y direction and obliquely downward, and is reflected by the surface of the inner wall portion W to illuminate the interior of the cabin. It is like that. That is, the third indirect illumination 3 functions as illumination on the upper side wall of the passenger compartment of the railway vehicle so that the reflected light reflected from the surface of the inner wall W is diffused to illuminate the side space (seat periphery) in the passenger compartment. It has become.

  The first indirect illumination 1 functions as ceiling illumination in which the emitted light L1 emitted from the first light source 1A is irradiated to the ceiling panels C1 to C5, and the reflected light reflected by these ceiling panels C1 to C5 illuminates the cabin. To do. The operation of the first indirect illumination 1 will be specifically described with reference to FIG. FIG. 4 illustrates two adjacent ceiling panels C3 and C4 among the ceiling panels C1 to C5, but the other ceiling panels C1, C2 and C5 have substantially the same configuration and operation. ing. For this reason, below, the effect | action of the 1st indirect illumination 1 is demonstrated based on ceiling panels C3 and C4.

  Adjacent ceiling panels C3 and C4 are formed in a curved shape in which an intermediate portion in the vehicle width direction (Y direction) protrudes downward, and from the first light source 1A located on one side in the Y direction (right side in FIG. 4). Is emitted from the side to the lower surfaces (interior surfaces) of the ceiling panels C3 and C4. The interior surfaces of the ceiling panels C3 and C4 are located on the outer side in the Y direction (one side in the vehicle width direction) to reflect the emitted light L1 from the first light source 1A, and the Y is more reflective than the reflecting surface part 1B. And a non-irradiation surface portion 1C that is located on the inner side in the direction (the other side in the vehicle width direction) and is not directly irradiated with the emitted light L1 from the first light source 1A. That is, of the indoor surfaces of the ceiling panels C3 and C4, a position where the tangential direction is parallel to the outgoing light L1 is defined as a boundary line 1D, and a side closer to the first light source 1A than the boundary line 1D is the reflection surface portion 1B. The side farther from the first light source 1A than 1D is the non-irradiated surface portion 1C.

  In the reflective surface portion 1B of the ceiling panels C3 and C4, a large curvature portion 1E having the same curvature as the curvature at the intermediate portion in the vehicle width direction and a larger curvature is provided in the vicinity of the outer edge. Specifically, the Y-direction outer edges of the ceiling panels C3 and C4 are bent upward with a small radius, and a large curvature portion 1E is configured by the bent-up portion. The large curvature portion 1E is bent vertically upward toward the edges of the ceiling panels C3 and C4. Therefore, the intersection angle with the emitted light L1 in the large curvature portion 1E is the same in the other reflection surface portion 1B. It is larger than the crossing angle.

  Further, in the non-irradiated surface portion 1C of the ceiling panel C4 located on the outer side in the Y direction (one side in the vehicle width direction), the inner edge thereof is the ceiling panel located on the inner side in the Y direction (the other side in the vehicle width direction). It is provided above the large curvature portion 1E, which is the outer edge of C3. That is, between the inner edge of the ceiling panel C4 and the outer edge of the ceiling panel C3, there is a slit (gap) 2B (see FIG. 5) that is formed thin in the Z direction and extends long in the X direction. Is formed. As in the case of the ceiling panels C3 and C4, a slit 2B (see FIG. 5) is also formed between the inner edge of the ceiling panel C2 and the outer edge of the ceiling panel C1.

  The outgoing light L1 emitted from the first light source 1A toward the ceiling panels C3 and C4 is applied to the reflective surface portion 1B as shown in FIG. As shown in FIG. 4B, the emitted light L1 is reflected and diffused by the reflecting surface portion 1B to illuminate the cabin. On the other hand, the emitted light L1 is not irradiated on the non-irradiated surface portion 1C, and the emitted light L1 is not reflected by the non-irradiated surface portion 1C. As shown in FIG. 4C, the interior surfaces of the ceiling panels C3 and C4 are visually recognized with the reflective surface portion 1B shining brightly, and the non-irradiated surface portion 1C looks dark. Further, in the reflecting surface portion 1B, the large curvature portion 1E shines particularly brightly and shines so that the luminance gradually decreases from the large curvature portion 1E toward the boundary line 1D.

  According to the first indirect illumination 1 described above, it is possible to illuminate the cabin with the reflected light reflected on the reflecting surface portions 1B of the second to fifth ceiling panels C2 to C5. Therefore, in a pair of ceiling member sets CA located on the left and right sides of the first ceiling panel C1, illumination light in which four strip-like reflected lights extend in the vehicle front-rear direction can be obtained. At this time, the brightness of the reflected light of the reflection surface portion 1B of each of the ceiling panels C2 to C5 decreases from the outer side in the Y direction toward the inner side, and the non-irradiation surface portion 1C is visually recognized as dark. Illumination light changing to Furthermore, since the large curvature part 1E shines brightly among the reflective surface parts 1B, the several linear illumination light extended in a vehicle front-back direction is also obtained.

  Next, the operation of the second indirect illumination 2 will be specifically described with reference to FIG. In the second indirect illumination 2, the emitted light L2 emitted from the second light source 2A is irradiated on the back surface of each ceiling panel C1 to C5, and leaks into the cabin through the slit 2B between these ceiling panels C1 to C5. The reflected light is reflected by the ceiling panels C2 to C5, and this reflected light functions as ceiling lighting that illuminates the cabin. The reflected light from the second indirect illumination 2 is reflected in the cabin from the non-irradiated surface portion 1C of the ceiling panels C2 to C5 where the emitted light L1 of the first light source 1A in the first indirect illumination 1 is not irradiated. Therefore, the illumination light which combined the illumination light by the 1st indirect illumination 1 and the illumination light by the 2nd indirect illumination 2 is obtained in the whole ceiling surface.

  According to the present embodiment described above, the ceiling panels C2 to C5 are formed in a downwardly convex curved shape, and the reflection surface portion 1B that becomes the convex surface is irradiated with the emitted light L1 of the first light source 1A from the side to be reflected. Thus, the reflection direction of the reflected light can be diffused, and the glare when looking up at the ceiling surface can be reduced. Moreover, since the brightness | luminance of the reflected light of the reflective surface part 1B of ceiling panels C2-C5 falls toward the inner side from the Y direction outer side, the non-irradiation surface part 1C is visually recognized darkly, Therefore A brightness | luminance changes to gradation form in the vehicle width direction Since the illumination light to be obtained is obtained, the beauty of the ceiling surface can be enhanced. Furthermore, since linear illumination light in which the large curvature portion 1E shines brightly can be obtained, the beauty of the ceiling surface can be further enhanced by indirect illumination light having a change in luminance.

  In addition, a ceiling member set CA including the ceiling panels C2 to C5 is provided in a pair of left and right symmetry with respect to the center axis in the vehicle width direction, and the vehicle is provided to each ceiling panel C2 to C5 of the pair of ceiling member sets CA. By irradiating light from the first light source 1A from the outer side (one side) in the width direction toward the center side, it is possible to generate left and right symmetrical indirect illumination light across the center axis of the vehicle. Therefore, since symmetrical indirect illumination light can be generated over a wide range of the ceiling surface, the beauty of the ceiling surface can be further enhanced while uniforming the brightness at each position in the passenger room.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

  For example, in the said embodiment, although the ceiling panels C1-C5 as a ceiling member were provided with two or more, as a ceiling member, it may comprise not only with two but one. Moreover, in the said embodiment, although ceiling member group CA which consists of ceiling panels C2-C5 was provided by a pair of left-right symmetry across the center axis | shaft of a vehicle width direction, it is not restricted to this, A ceiling member is left-right asymmetric. It may be provided, or may be provided only on one side with respect to the central axis in the vehicle width direction. Moreover, as a ceiling member, it is not restricted to what is comprised by plate-shaped ceiling panels C1-C5 like the said embodiment, You may be comprised by the member with thickness larger than a panel, The indoor surface is downward. It suffices if it is formed in a curved surface having a convex shape.

  Moreover, in the said embodiment, 1 A of 1st light sources of the 1st indirect illumination 1 are comprised so that light may be irradiated to the inside (other side) from the outer side (one side) of a vehicle width direction toward the ceiling panels C1-C5. However, the present invention is not limited to this, and the light source may be provided on the center side in the vehicle width direction so as to emit light toward the outside. In this case, for example, a light source is disposed on the back side of the first ceiling panel C1, and light is emitted from the gap between the first ceiling panel C1 and the second ceiling panel C2 toward the ceiling panels C2 to C5. What is necessary is just to comprise.

  In the embodiment, the second indirect illumination 2 and the third indirect illumination 3 are provided in addition to the first indirect illumination 1, but at least one of the second indirect illumination 2 and the third indirect illumination 3 can be omitted. It is. When the 2nd indirect illumination 2 is abbreviate | omitted, it is not necessary to form the slit 2B between ceiling panels C1-C5, and the edge of each ceiling panel C1-C5 may be installed continuously, and each ceiling panel You may use the panel which integrally formed C1-C5. Furthermore, when the 3rd indirect illumination 3 is abbreviate | omitted, you may provide another illuminating device in the inner wall part W or the shoulder part S. FIG.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, although the present invention has been particularly illustrated and described with respect to particular embodiments, it will be understood that the present invention is not limited in shape to the embodiments described above without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

1 First indirect lighting (indirect lighting device)
1A First light source (light source)
1B Reflective surface portion 1C Non-irradiated surface portion 1E Large curvature portion C Ceiling portion C1 to C5 Ceiling panel (ceiling member)

Claims (4)

An indirect lighting device provided in a vehicle interior,
At least one ceiling member constituting the indoor ceiling surface;
A light source for irradiating light from one side in the vehicle width direction to the ceiling member,
The ceiling member is elongated along the vehicle front-rear direction, and is formed with a curved indoor surface that protrudes downward in the middle in the vehicle width direction,
The interior surface of the ceiling member is located on one side in the vehicle width direction and reflects the light from the light source, and is located on the other side of the reflection surface and is not directly irradiated with light from the light source. A non-irradiated surface portion ,
In the vicinity of one side edge in the vehicle width direction of the reflecting surface portion, a large curvature portion having the same bending direction as the intermediate portion in the vehicle width direction and having a curvature larger than the curvature of the intermediate portion is provided. Indirect lighting device characterized. The ceiling member is composed of a plurality adjacent to each other in the vehicle width direction, and among the ceiling members adjacent to each other, one side edge of the ceiling member located on the other side in the vehicle width direction is a ceiling member located on one side The indirect lighting device according to claim 1 , wherein the indirect lighting device is provided so as to overlap the indoor side. The indoor surface of the ceiling member, indirect lighting device according to claim 1 or 2, characterized by being finished to dull metallic color. The ceiling member is provided as a pair of left and right symmetrical across the central axis in the vehicle width direction,
The light sources are provided as a pair on the outside in the vehicle width direction and irradiate light toward the center side in the vehicle width direction, or are provided as a pair on the center side in the vehicle width direction and on the outside in the vehicle width direction. The indirect illumination device according to any one of claims 1 to 3 , wherein light is irradiated toward the light source.

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