JP6226183B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture provided in a passenger room of a vehicle such as a train.

  2. Description of the Related Art Conventionally, an indirect light type lighting fixture is known in which light is irradiated from a light source to a reflecting plate and illumination is performed by reflected light emitted from the reflecting plate. For example, Patent Document 1 discloses an example of such an indirect light type lighting fixture. According to the lighting apparatus of Patent Document 1, a soft and favorable illumination state by indirect illumination can be realized by irradiating light on a reflection surface using an LED lamp as a light source and illuminating the room with the reflected light.

JP 2003-92006 A

  However, since the light emission angle of the LED is narrow, when the LED is used as a light source, it is difficult to irradiate the light so that the light uniformly spreads on the reflecting surface. In the luminaire of Patent Document 1, when the portion near and far from the LED on the reflecting surface is compared, the brightness is not uniform, and the central portion of the reflecting surface far from the LED may become dark. It was. Moreover, when it is going to irradiate the light of LED with respect to the wide range of a reflective surface, it is necessary to leave | separate the distance of LED of a light source, and the concave curved surface which is a reflective surface, and there exists a possibility that the dimension of a lighting fixture may become large. there were. In the case of being provided on the ceiling like the lighting fixture of Patent Document 1, since the LED is arranged at the lower portion and the reflecting surface is arranged above the LED, the height of the lighting fixture itself may be increased.

  In view of the above situation, the present invention is an indirect light type lighting fixture using an LED as a light source, and the thickness of the reflected light is less uneven and the light spreads, and the vertical height of the fixture is low. An object of the present invention is to provide a lighting apparatus.

The lighting fixture of the present invention is “a lighting fixture that illuminates with reflected light, and has a long fixture main body portion, and a first reflecting portion provided in the fixture main body portion along the longitudinal direction of the fixture main body portion. A light source substrate that is provided downward along the longitudinal direction of the instrument main body and radiates light to the first reflecting part; and provided upward along the longitudinal direction of the instrument main part and receives from the first reflecting part. A second reflecting portion that radiates reflected light that is further reflected and diffused from the reflected light , wherein the first reflecting portion is the light source.
It has a condensing reflection surface with a concave side, and a diffuse reflection surface with a convex surface on the light source substrate side. ''
It is characterized by that.

According to the power supply device of the present invention, the light reflected by the first reflecting portion is irradiated to the second reflecting portion,
Since the illumination is performed by the reflected light from the second reflecting portion, the path of light from the light source substrate to the second reflecting portion can be lengthened and the light can be spread. Moreover, the reflected light can be further spread by further reflecting and diffusing the light reflected and diffused by the first reflecting part at the second reflecting part. As a result, indirect illumination with little unevenness in brightness can be performed without increasing the height of the lighting fixture in order to keep the light source base and the reflecting surface away from each other. So
Then, the light irradiated to a low position near the light source is reflected to the second reflecting portion, and is a position far from the light source.
The light irradiated on the surface is diffused over a wide range by the convex surface, and is irradiated on the second reflecting portion.
The part is radiated into the vehicle interior which is the irradiated region without passing through the second reflecting part. In other words, the second reflection
A range where light from the part does not reach is illuminated by a part of the light from the first reflecting part. This
Further, the illumination can be performed so that the light spreads over a wider range.

  Further, the illumination device of the present invention is described as follows. “The first reflecting portion is a substantially vertical surface, and the second reflecting portion is in a direction substantially orthogonal to the first reflecting portion and is closer to the other end than the one close to the instrument body portion. It is good also as what is inclined so that it may become low.

  According to this configuration, the light can be controlled so that the reflected light spreads within a predetermined range according to the inclination angle of the second reflecting portion while reflecting the light emitted from the light source in two stages. It is possible to illuminate a range where there is no excess or deficiency below.

  As described above, according to the lighting apparatus of the present invention, the first reflection part and the second reflection part are provided, and by extending the distance between the light source and the reflection surface, the indirect light using the LED as the light source is used. It is a lighting fixture that illuminates, and it is possible to provide a thin lighting fixture in which the brightness of reflected light is less uneven and the vertical height of the fixture is low.

Explanatory drawing which shows the structure of the lighting fixture which is one Embodiment of this invention. Sectional drawing which shows the structure of a lighting fixture. Sectional drawing which shows the structure of the lighting fixture which is other embodiment of this invention.

  Hereinafter, the lighting fixture 10 which is one Embodiment of this invention is demonstrated based on FIG.1 and FIG.2. FIG. 1 is an explanatory diagram illustrating a state in which the lighting fixture 10 is viewed from below, and FIG. 2 is a cross-sectional view illustrating a configuration of the lighting fixture 10.

  FIG. 1 is an explanatory diagram showing a state in which the lighting fixture 10 attached to the ceiling surface C is viewed from vertically below. A plurality of lighting fixtures 10 are linearly arranged in the longitudinal direction so as to be substantially parallel to the longitudinal direction of the railway vehicle with respect to the ceiling surface C of the railway vehicle. It is preferable that the row | line | column of the lighting fixture 10 is provided in the 2nd row | line | column arrange | positioned 1 each in the center part of the ceiling surface C, or 1 row each in the left-right direction of the vehicle.

  As shown in FIG. 2, the luminaire 10 is configured by attaching various components to a metallic casing 20. The casing 20 is a longitudinal member formed by extrusion molding using, for example, aluminum, and has a total length of about 1.8 m and a total width of about 0.5 m. As shown in FIG. 2, the casing 20 of the present example has a uniform cross-sectional shape orthogonal to the longitudinal direction and is generally bilaterally symmetric. The casing 20 has a shape extending vertically downward in a bifurcated manner, and has a so-called n-shaped instrument main body portion 21, and the first reflecting portions 30 and 31 are provided on both outer side surfaces of the instrument main body portion 21. In addition, four screw holes 37 through which the mounting screws 33 are inserted from below the inside of the groove 35 are provided in the upper center. The casing 20 includes light source holding portions 40 and 41 extending from the lower part of the instrument main body 21 to the left and right sides, and second reflection parts 50 and 51 extending from the upper part of the instrument main body 21 to the left and right sides. .

  As shown in FIGS. 1 and 2, the lighting fixture 10 has end caps 12 attached to both ends of a casing 20, and is attached to a mounting base 90 of a vehicle body by four mounting screws 33. The mounting base 90 is fixed in a groove-shaped lighting fixture mounting portion R provided on the ceiling surface C, and suspends and supports the mounted lighting fixture 10.

  The LED substrates 60 and 61 are respectively mounted obliquely upward on the inner side (upper side) of the light source holding parts 40 and 41, and light is directed toward the first reflecting parts 30 and 31 that are obliquely upward. Irradiate. Further, covers 70 and 71 are respectively attached so as to cover the upper sides of the LED substrates 60 and 61. The LED substrates 60 and 61 are configured by mounting a large number of LEDs on a long and narrow printed circuit board in a straight line, and serve as a light source of the lighting fixture 10. The covers 70 and 71 have a rectangular plate shape made of a highly transparent material. The light source holders 40 and 41 on which the LED boards 60 and 61 are mounted are sealed to prevent foreign matter such as dust and insects from entering. It is preventing. In this example, the covers 70 and 71 are made of glass, and the surface thereof has a glass slide shape, and diffuses transmitted light. The material of the covers 70 and 71 is not limited to glass, and may be made of plastic such as polycarbonate. Further, the surface finish of the covers 70 and 71 may be smooth, or may be subjected to surface processing having a light diffusion effect such as lens cutting. Here, the LED substrates 60 and 61 correspond to the light source substrate of the present invention.

  As shown in FIG. 2, the first reflecting portions 30 and 31 are elongated surfaces extending in the longitudinal direction of the casing, and present a quadratic curved surface that is slightly convex toward the upper side. Similarly, the second reflecting portions 50 and 51 are elongated surfaces extending in the longitudinal direction of the casing, and exhibit a long secondary curved surface that is slightly convex toward the lower center. The second reflecting portions 50 and 51 are slightly inclined so that the center portions are higher than the both end portions and face the first reflecting portions 30 and 31. It is preferable that the first reflecting portions 30 and 31 and the second reflecting portions 50 and 51 have a glossy paint finish.

  The luminaire 10 receives a direct current supplied to the LED substrates 60 and 61 from a DC power supply device (not shown) provided in the luminaire mounting portion R, and causes the LEDs mounted on the LED substrates 60 and 61 to emit light. To illuminate the room. The light emitted from the LED is irradiated so as to enter the first reflecting portions 30 and 31 obliquely from below. The light applied to the first reflecting portions 30 and 31 is reflected and diffused obliquely upward according to the curved surface shape of the first reflecting portions 30 and 31. Most of the reflected light reflected by the first reflecting portions 30 and 31 reaches the second reflecting portions 50 and 51, respectively, and is reflected and diffused from below to below according to the shape of the second reflecting portions 50 and 51. . Then, the vehicle interior is illuminated with the reflected light from the second reflecting portions 50 and 51.

  By the way, when irradiating light on the reflecting surface for directly illuminating the interior of the vehicle with the LED, the distance between the LED and the reflecting surface is short, so that the light is not sufficiently diffused, and uneven brightness tends to occur. There was a problem. And when the distance of LED and a reflective surface was lengthened, there existed a problem that the dimension of the height direction of a lighting fixture will become large. On the other hand, according to the lighting fixture 10 of this embodiment, the light reflected from the LED substrates 60 and 61 and reflected by the first reflecting portions 30 and 31 is irradiated to the second reflecting portions 50 and 51, and the second reflecting portion. Since illumination is performed by the reflected light from 50 and 51, the path of light from the LED substrates 60 and 61 to the second reflecting portions 50 and 51 can be lengthened, and the light can be spread. Further, the light reflected and diffused by the first reflecting portions 30 and 31 is further reflected and diffused by the second reflecting portions 50 and 51, whereby the reflected light can be further spread.

  Moreover, according to the lighting fixture 10, since the reflected light reflected and diffused by the first reflecting surfaces 30 and 31 which are curved surfaces is further reflected and diffused by the second reflecting surfaces 50 and 51, the indirect illumination is performed. Light can be spread over a range.

  Furthermore, according to the lighting fixture 10, since the LED boards 60 and 61 are attached obliquely upward on the inner side, the light source is not directly seen when the passenger looks up from the lower side, and it is difficult to feel dazzling. .

  Moreover, according to the lighting fixture 10, while reflecting the light radiated | emitted from LED board 60,61 in two steps, light is reflected so that reflected light may spread in a predetermined range according to the inclination angle of the 2nd reflection parts 50 and 51. Since it can be controlled, it is possible to illuminate a range where there is no excess or deficiency.

  In addition, embodiment of this invention is not limited to said structure, As shown below, it can change variously.

  In the above embodiment, the first reflecting portions 30 and 31 are shown as curved surfaces that are convex outwardly as a whole, but are not limited to this, and the bending direction depends on the portion of the reflecting surface. May be different. FIG. 3 is a cross-sectional view showing a configuration of a lighting fixture according to another embodiment of the present invention having such a reflecting surface. As shown in FIG. 3, in the first reflecting part of the lighting fixture 100, the reflecting surface upper portions 300a and 310a are curved outwardly in a convex shape, while the reflecting surface lower portions 300b and 310b are on the concave surface. With such a reflection surface configuration, it is possible to illuminate a wide area by irradiating the outside of the second reflecting portions 50 and 51 with a stronger light and diffusing the light over a wider area. Here, the reflection surface upper portions 300a and 310a correspond to the diffuse reflection surface of the present invention, and the reflection surface lower portions 300b and 310b correspond to the condensing reflection surface of the present invention.

  About the technical idea which can be grasped | ascertained from the structure of embodiment of this invention, it adds to the following with those effects.

(1) The lighting fixture of the present invention is “a lighting fixture that illuminates with reflected light, and has an appliance main body having a substantially uniform cross-sectional shape and a longitudinal direction of the appliance main body. A pair of first reflecting portions provided on both left and right sides of the central portion of the instrument main body portion, and a pair of first reflecting portions provided on the left and right lower portions of the central portion along the longitudinal direction of the instrument main body portion. A light source substrate that emits light to each other and a pair of reflections that are provided on the left and right upper portions along the longitudinal direction of the instrument body, and further reflect and diffuse the reflected light from the pair of first reflection parts, respectively. It can also be set as the lighting fixture characterized by including the 2nd reflection part which radiates | emits light.

  In this case, by arranging the light source in the center and providing the first reflecting part and the second reflecting part on both sides, the both sides of the light source can be illuminated, and a wider range can be illuminated. A luminaire can be provided.

  DESCRIPTION OF SYMBOLS 10 ... Lighting fixture, 21 ... Appliance main-body part, 30, 31 ... 1st reflection part, 50, 51 ... 2nd reflection part, 60, 61 ... LED board (light source board), 100 ... Lighting fixture, 300, 310 ... 1st One reflection part, 300a, 310a ... upper reflection surface (diffuse reflection surface), 300a, 310a ... lower reflection surface (condensation reflection surface),

Claims (2)

A luminaire illuminating with reflected light,
An instrument body having an elongated shape with a substantially uniform cross-sectional shape;
A first reflecting portion provided in the instrument body along the longitudinal direction of the instrument body,
A light source substrate that is provided below along the longitudinal direction of the instrument main body and emits light to the first reflecting portion;
A second reflecting portion that is provided upward along the longitudinal direction of the instrument main body portion and emits reflected light that is further reflected and diffused from the reflected light received from the first reflecting portion ;
The first reflecting portion includes a condensing reflection surface having a concave surface on the light source side, and a convex surface on the light source substrate side.
And a diffusing reflective surface . The first reflecting portion is a substantially vertical surface, and the second reflecting portion is inclined so that the other end is lower than one end close to the instrument body portion in a direction substantially perpendicular to the first reflecting portion. The lighting fixture according to claim 1, wherein

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