JP6516502B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device disposed on a ceiling in a cabin of a vehicle and provided with an organic EL (electroluminescence) as a light source, for example, used for lighting in a cabin of a vehicle such as a railway vehicle.

  2. Description of the Related Art In recent years, in lighting devices for illuminating the interior of a passenger compartment of a vehicle such as a railway vehicle, the use of LEDs (light emitting diodes) as light sources has begun to increase. However, since the LED is a point light source and is dazzling when entering the field of view, special measures such as covering the instrument or indirect lighting are used to reduce glare to reduce passenger discomfort. It was necessary.

  By the way, organic EL (electroluminescence) is known as a light emitting element which has recently been in the limelight. This is a surface light source that emits light by an organic compound that has the property of being lit when electricity flows, and can be processed into a panel-like shape and emits light by itself (self-emission). The utilization of is also being considered.

  As a lighting device using an organic EL, white illumination light can be obtained by mixing light from an LED emitting blue light and an organic EL emitting yellow light in, for example, Patent Document 1, and the light of the LED is organic. It is disclosed that the LED is provided at a position not overlapping the organic EL light emitting device so as to pass between the ELs.

  In such a lighting device, light emitted from the LEDs is distributed so as to pass between the organic ELs without passing through the organic EL itself. The light from the LED is irradiated so as to overlap the irradiation range or direction of the organic EL, so that the light from the LED and the light from the organic EL are mixed and irradiated toward the same object. It is a feature.

JP 2012-151101 A

  In the lighting device disclosed in Patent Document 1 described above, since the irradiation range of light from the organic EL and the LED is the same, in the case of considering the use of a vehicle such as a railway vehicle in the cabin, There is a problem that the LEDs are simply combined and the light characteristics of the organic EL and the LED can not be utilized.

  That is, although light from the organic EL, which is a surface light source, can be irradiated as soft light of surface light without being made indirect light to the interior of the cabin, it is an LED which is a point light source. Mixing the light from the car could cause unpleasant glare to the passengers in the cabin. In addition, even the light from the highly directional LED is simply irradiated toward the inside of the cabin, and there is a problem that the light does not reach the ceiling surface and its corners.

  In general commuting vehicles, advertisements are often attached to the corners of the ceiling, and there are no passengers at such positions, so even if the area is brightly lit, the passengers do not feel dazzled, and the advertisement effects are also achieved. It can be enhanced. However, in the illumination device disclosed in Patent Document 1, it is difficult to use as partial illumination in which light from a highly directional LED is irradiated only to a necessary area.

  The present invention has been made focusing on the problems of the above-described conventional techniques, and it is possible to illuminate the inside of the passenger cabin with the soft light whose glare is suppressed by the organic EL. While it can be done, the corners of the ceiling can be illuminated brighter with more directional light than other light sources, and the optimal features of the interior of the passenger compartment of the vehicle can be realized by taking advantage of the features of the organic EL and other light sources. It aims to provide a lighting device that can

The subject matter of the present invention for achieving the objects described above resides in the inventions of the following items.
[1] In a lighting device (10) disposed on a ceiling (3) in a cabin (2) of a vehicle (1) and provided with an organic EL (electroluminescence) (21) as a light source,
A first light source (20) obtained by processing the organic EL (21) into a panel shape, and the light source (20) of the organic EL (21) holding the first light source (20) into the lower cabin (2) And a second light source (30) comprising a case body (11) attached to the ceiling (3) in a state of being directed, and another light source capable of emitting light having higher directivity than the light emission of the organic EL (21). Have
The first light source (20) and the case body (11) are formed in a rectangular shape extending in the longitudinal direction of the cabin (2) in plan view,
At both ends of the case body (11), flanges (13, 14) extending laterally from the upper edge and the lower edge of the case body (11) are provided.
In a space surrounded by the the flange (14) of the flange (13) and said lower edge of said upper edge, said second light source (30) irradiates light directly towards the corner of at least the ceiling (3) Placed in the state,
In the space surrounded by the flange (13) of the upper edge and the flange (14) of the lower edge, the irradiation range of direct light from the second light source (30) is a predetermined width extending vertically from the optical axis A lighting device (10) characterized in that light distribution regulation means (61, 62) for narrowing the light intensity distribution is provided .

[2] the lower edge of the flange (14), and characterized in that said receiving portion for shielding light distribution toward the lower room (2) in one of the direct light from the second light source (30) (14) The illuminating device as described in said [ 1 ].

[ 3 ] The second light source (30) and the flanges (13) of the upper edge and the flanges (14) of the lower edge are provided in a unit (40) separate from the case body (11), The lighting device (10) according to the above [ 1] or [2] , wherein the unit (40) is retrofitted to both side ends of the case body (11).

[ 4 ] The second light source (30) and the light distribution regulation means (61, 62) are provided in a unit (50) separate from the case body (11), and the unit (50) together with the case body above, wherein the Rukoto be retrofitted to both side ends of (11) [1] the lighting device according to [2] or [3] (10).

[ 5 ] The second light source (30) includes LEDs (light emitting diodes) (32) arranged in a plurality on a substrate (31) extending in a narrow width. ] The illumination device (10) as described in, [3] or [4] .

[ 6 ] The panel-shaped organic EL (21) which is the first light source (20) may be transparent when not emitting light,
Of the case body (11), the upper surface side facing the opening on the bottom side which exposes the light emitting surface (22) of the organic EL (21) is also opened,
[1], [2], [3], [4] or [ 1], characterized in that the case body (11) is attached to the opening or the transparent window part previously provided in the ceiling (3) . The illuminating device (10) as described in 5] .

Next, the operation based on the above-described solution will be described.
According to the lighting device (10) described in the above [1], the surface light emission is performed by the first light source (20) obtained by processing the organic EL (21) into a panel shape in the passenger cabin (2) having a passenger Soft light with reduced glare is emitted. On the other hand, with respect to the corner of the ceiling (3) of the passenger cabin (2), the second light source (30) comprising the light source different from the organic EL (21) has directivity compared to the light emission of the organic EL (21) Light is emitted.

Thereby, for the passengers in the passenger cabin (2), a comfortable lighting environment by the first light source (20) can be realized without giving off unpleasant glare. Moreover, the corner of the ceiling (3) to which the light from the first light source (20) does not reach can be brightly illuminated with high directivity by the second light source (30). Therefore, if there is an advertisement (4) in the corner of the ceiling (3), the advertisement effect can be enhanced by highlighting the advertisement (4). In addition, even if there is no advertisement, reflection of light at the corner of the ceiling (3) can illuminate the interior of the room (2) more brightly, and the corners of the ceiling (3) and the ceiling (3) are brightly lit. (2) The sense of brightness inside is also improved .

To case main body (11) and the first light source (20), rooms (2) is formed in the longitudinally extending rectangular, both side ends of the case body (11), side than the respective upper and lower edges An outwardly extending flange (13, 14) is provided. The upper edge of the flange (13) the second light source (30) disposed in a space surrounded by the the flange (14) of the lower edge and are you directly irradiating light toward the side from each end. As a result, the second light source (30) is at a position where it does not block the light emitted from the first light source (20) in the case body (11), so that it is possible to prevent the loss of light.
Moreover, the case main body (11) itself can not only be used as a disposition space of the second light source (30), but the first light source (20) directly makes the lower cabin (2) an irradiation range, 30) can set the illumination range to the corner along the ceiling (3) and realize optimal light distribution respectively.
Further, in the space surrounded by the upper edge flange (13) and the lower edge flange (14), the irradiation range of direct light from the second light source (30) is set to a predetermined width extending up and down from the optical axis A light distribution regulation means (61, 62) to narrow is provided. Specifically, the light distribution regulating means (61, 62) corresponds to, for example, a greatly curved reflecting mirror (61) or a lens (62) of a predetermined shape.
According to such light distribution regulation means (61, 62), by making direct light from the second light source (30) a narrow angle light distribution, it is also possible to suppress glare in the cabin (2) It becomes.

According to the lighting device (10) described in the above [ 2 ], the flange (14) of the lower edge is configured to distribute the light distribution toward the lower cabin (2) of the direct light from the second light source (30) It becomes an interception receiving part (14). The receiving portion (14) can prevent direct light from the second light source (30) from going into the cabin (2), and the irradiation range of the second light source (30) can be set to the first light source (20). It can be easily limited other than the irradiation range to the cabin (2) of).

According to the lighting device (10) described in the above [ 3 ], the second light source (30) , the upper edge flange (13) and the lower edge flange (14) are separate bodies from the case body (11) The unit (40) is attached to the both ends of the case body (11) together with the unit (40). As a result, the configuration of the case body (11) itself can be simplified, and the degree of freedom in design can be increased with respect to the attachment site of the second light source (30) and the like.
Similarly, the light distribution regulation means (61, 62) described in the above [ 4 ] and the second light source (30) may be provided as separate units (50).

According to the lighting device (10) described in the above [ 5 ], the second light source (30) is composed of the LEDs (32) arranged side by side on the substrate (31) extending in a narrow width. According to the second light source (30), it is possible to illuminate the corner of the ceiling (3) using the light distribution characteristic of the LED (32) with a simple configuration. Here, although each LED (32) is a point light source, by arranging a plurality of LEDs, it becomes possible to distribute light in a wide range extending linearly, and the LED also has directivity compared to the organic EL (21). high.

According to the illumination device (10) described in the above [ 6 ], the panel-shaped organic EL (21) which is the first light source (20) is transparent when not emitting light, and there are also devices which can be seen through. In addition, the first light source (20) and the case main body (the case main body (11) are also opened by making the upper surface side opposite to the opening on the bottom surface side expose the light emitting surface (22) of the organic EL (21). 11) becomes like a window which can be seen through when it itself does not emit light.

  Then, the case main body (11) is attached so as to be aligned with an opening or a transparent window portion provided in advance in the ceiling (3). This makes it possible to utilize the illumination device (10) not only as a simple light emitting means, but also as part of a window in a ceiling (3) such as a sunroof or the like.

  According to the lighting device according to the present invention, it is possible to illuminate the interior of the passenger compartment with the soft light whose glare is suppressed by the organic EL while the passenger compartment is in the passenger compartment, while the corner of the ceiling is more directional than other light sources It can be brightly illuminated with high quality light, and it is possible to realize optimal lighting in the cabin of the vehicle by taking advantage of the features of the organic EL and other light sources.

It is an end elevation showing expanding the end part of the lighting installation concerning a 1st embodiment of the present invention. It is a perspective view expanding and showing the end part of the lighting installation concerning a 1st embodiment of the present invention. It is sectional drawing which shows roughly the attachment state of the illuminating device which concerns on 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows roughly the passenger compartment of the rail vehicle containing the attachment state of the illuminating device which concerns on 1st Embodiment of this invention. It is an end elevation showing typically the irradiation range of the lighting installation concerning a 1st embodiment of the present invention. It is an end elevation which expands and shows the unit of the lighting installation concerning a 2nd embodiment of the present invention. It is an end elevation which expands and shows the unit of the lighting installation concerning a 3rd embodiment of the present invention. It is an end elevation which expands and shows the unit of the lighting installation concerning a 4th embodiment of the present invention.

Hereinafter, various embodiments representing the present invention will be described based on the drawings.
1 to 5 show a first embodiment of the present invention.
As shown in FIG. 1, the lighting device 10 holds a first light source 20 obtained by processing the organic EL 21 into a panel shape, and a state in which the first light source 20 is held and the light emitting surface 22 of the organic EL 21 is directed downward into the cabin 2. The case body 11 attached to the ceiling 3 and the second light source 30 composed of a light source different from the organic EL 21 are provided. Hereinafter, the example arrange | positioned on the ceiling 3 in the passenger compartment 2 in the rail vehicle 1 is demonstrated.

  The first light source 20 is obtained by processing the organic EL 21 into a rectangular panel shape extending in the longitudinal direction in plan view. Here, the organic EL 21 is generally used for illumination and display, and for illumination, characters and patterns can not be displayed. Hereinafter, a display device will be described as an example. In the organic EL 21, a bottom surface side facing downward is a light emitting surface 22 edged by a case main body 11 described later. Note that the organic EL 21 is characterized by, for example, being able to be processed into a panel shape thinner than the liquid crystal to be illuminated by the backlight, since it is illuminated by itself.

  Specifically, the organic EL 21 for display has an anode (anode) and a cathode (cathode) arranged in a matrix on a transparent panel substrate, and contains organic compounds that emit light of each color at the intersections of the electrodes. It is configured to sandwich a thin film (light emitting layer). Here, by applying a voltage to each electrode, the organic compound emits light of each color, and full color display is possible by additive color mixing of the three primary colors of the light emission.

  The driving method of the organic EL 21 is roughly classified into two methods, an active matrix type in which control is performed for each pixel and a passive matrix type in which light emission control is performed by controlling the column direction. There is. All of them are matrix control systems, and they share points in which horizontal or vertical control crosses pixels, but passive matrix types have a simple structure, and active matrix types have high luminous efficiency and high image quality. be able to.

  Such an organic EL 21 is easy to form in a panel shape, enables surface light emission, becomes a light distribution close to uniform diffusion, and is less likely to feel glare even in the direct view. In addition, the organic EL 21 is transparent when it is not lit, that is, when nothing is displayed, and the other side can be seen through the organic EL 21.

  Further, the light emitting surface 22 of the organic EL 21 can not only emit light, but also can display various information such as guidance information of a train stop station and route, various other advertisements, and the like in color. Although not shown, a connector for transmitting and receiving a lighting control signal from the control substrate, a connector for power supply wiring, and the like are provided at the side end of the organic EL 21.

  The case main body 11 is formed in a shallow box shape for housing the first light source 20, and the bottom surface side is largely opened to expose the light emitting surface 22 of the organic EL 21. The space inside the case body 11 conforms to the size and shape in which the first light source 20 just fits. Similar to the first light source 20, the case body 11 is formed in a rectangular shape extending in the longitudinal direction of the cabin 2 in a plan view. Such case body 11 can be formed of metal such as aluminum.

  In addition, second light sources 30 are provided along both side edges which are long sides of the case main body 11, respectively. Here, the second light source 30 is provided at a position that does not block the light emitted from the first light source 20 in the case main body 11, and emits light directly toward at least the corner of the ceiling 3 as described later. It is arranged as.

  At the upper edges of both side end faces 12 of the case main body 11, flanges 13 extending laterally to a predetermined width are provided. Similarly, the lower edges of the both end faces 12 of the case main body 11 are provided with flanges 14 each extending laterally to a predetermined width. A space surrounded by the side end surface 12 and the upper and lower flanges 13 and 14 at both side ends of the case main body 11 is an arrangement space of the second light source 30.

  The type of the specific light source is not particularly limited, but the second light source 30 is composed of another light source capable of emitting light having high directivity as compared to the light emission of the organic EL 21. Specifically, for example, Is preferred. The LED has features such as small size, low power consumption, and long life, and has high directivity as well as high light intensity as compared to the light emission of the organic EL 21. In the second light source 30 according to the present embodiment, a plurality of surface mount LED chips 32 are arrayed and fixed at equal intervals on a substrate 31 extending in a narrow width.

  Here, the configuration of the LED chip 32 itself is general, so a detailed description will be omitted, but a type is used that emits light in a radiation range of a predetermined angle around an optical axis orthogonal to the substrate 31. The emission color of the LED chip 32 can be arbitrarily selected. Further, on the mounting surface of the substrate 31, a wiring circuit to which the LED chip 32 is electrically connected is formed. A phosphor layer may be laminated on the mounting surface of the substrate 31 so as to cover the LED chip 32.

  As shown in FIG. 1, the substrate 31 of the second light source 30 is attached to the side end surface 12 of the case main body 11 so as to face sideways. Here, the second light source 30 is disposed so as to direct light toward at least a corner of the ceiling 3 from a disposition space that does not block light emitted from the first light source 20 in the case main body 11.

  That is, of the second light sources 30 on both sides of the case main body 11, the second light sources 30 at one side end closer to the vehicle side wall direct light from a surface directly adjacent to the ceiling 3 to a portion curved toward the side wall which becomes a corner To illuminate the advertisement 4 (see FIG. 4) attached to the site. On the other hand, the second light source 30 at the other side end closer to the center of the vehicle emits light directly from the surface immediately adjacent to the ceiling 3 to the surface extending to another illumination device 10 at the other side.

  Further, the lower flange 14 in the case main body 11 serves as a receiving portion that blocks the light distribution directed into the lower cabin 2 in the direct light from the second light source 30. Thereby, direct light from the second light source 30 is emitted toward the corner from the side immediately below the ceiling 3 but does not go into the cabin 2. Therefore, as shown in FIG. 5, the irradiation range of the second light source 30 does not overlap with the irradiation range of the first light source 20 into the cabin 2.

  A protective cover (see FIG. 6) made of a transparent material may be attached to the arrangement space of both side ends of the case body 11 so as to cover the second light source 30 from the outside. The protective cover may be colorless and transparent, may be colored and transparent, or may contain a light diffusing agent so that the light is diffused by the protective cover.

  In addition to the power supply unit for supplying the power necessary for lighting to the first light source 20 and the second light source 30, the lighting device 10 includes a control board for controlling lighting of each of the first light source 20 and the second light source 30. The light source 30 is electrically connected. Generally, the control board is composed of a microcomputer comprising a normal CPU, a RAM, a ROM, an interface and the like. Further, a switch or the like that can be operated from the outside is connected to the control board.

  Here, the control board includes the lighting circuit of the first light source 20 and the lighting circuit of the second light source 30. The lighting circuit of the first light source 20 adjusts the voltage from the power supply unit based on the signal of lighting control regarding the first light source 20 from the control substrate and outputs it to the first light source 20 to light up or display the organic EL 21 Control. The lighting circuit of the second light source 30 adjusts the voltage from the power supply unit based on the signal of lighting control related to the second light source 30 from the control substrate, and outputs it to the LED chip 32 to control lighting of the LED chip 32.

Next, the operation of the illumination device 10 according to the first embodiment will be described.
As shown in FIG. 1, the lighting device 10 is attached so as to extend in the front-rear direction along the ceiling 3 in the passenger compartment 2 of the railway vehicle 1. Here, the total length of the lighting device 10 can be designed to any size, but by connecting a plurality of lighting devices 10 sequentially in a row, individual lighting devices 10 can be connected as a unit to a desired length.

  In the present embodiment, the illumination devices 10 are arranged in two lines in left-right symmetry with the center line extending in the front-rear direction of the ceiling 3 as the axis of symmetry. As a result, the interior of the passenger cabin 2 can be widely illuminated from the left and right sides in a well-balanced manner. Here, the lighting devices 10 on the left and right may be controlled to be individually lighted. Alternatively, although not shown, one lighting device 10 designed to have a large width may be disposed along the center line of the ceiling 3.

  In this lighting device 10, the organic EL 21 is employed as the light source of the first light source 20 for illuminating the interior of the cabin 2, thereby suppressing glare due to surface emission from the light emitting surface 22 toward the entire cabin 2 below. Emits soft light. According to the light distribution close to the even diffusion by the organic EL 21 as described above, the passengers in the cabin 2 do not feel unpleasant glare, and a comfortable lighting environment can be realized.

  Further, the light emitting surface 22 of the organic EL 21 may not only emit light as described above, but also may display various information such as guidance information of a stop station of a train or a route, various advertisements, etc. in color. As the display content of the organic EL 21, for example, an external situation such as an outside scenery such as whether the traveling position of the railway vehicle 1 is in a city area or a suburb, or weather may be displayed. Alternatively, according to an event or the like at the time of operation, it is interesting to adjust the entire light emitting surface 22 of the organic EL 21 as the illumination.

  On the other hand, the ceiling 3 of the cabin 2 is irradiated with light having a higher directivity than the light emission of the organic EL 21 by the second light source 30 composed of a light source different from the organic EL 21. That is, the second light sources 30 are provided at both side ends of the case main body 11 for holding the organic EL 21 downward, and the second light sources are provided up to the corner of the ceiling 3 where the light does not reach with the first light sources 20. 30 enables bright and highly directional illumination.

  As a result, when the advertisement 4 is in the corner of the ceiling 3, the advertisement 4 can be made brighter by lighting, and the advertisement effect can be further enhanced. Further, according to the second light source 30, when the middle hanging advertisement is installed along the center line of the ceiling 3 by the second light source 30 that faces not only the advertisement 4 at the corner of the ceiling 3 but also the vehicle center In addition, this hanging advertisement can also be highlighted by direct light and bright. Furthermore, it is possible to illuminate the entire surface of the ceiling 3 brightly, and also to enable various illumination effects by light emission toning that looks like a screen.

  In particular, by using the LED chip 32 as the light source, the second light source 30 not only achieves desired brightness with low power consumption, but also makes the entire device compact in combination with the thinning of the organic EL 21. be able to. Therefore, a feeling of oppression to the passenger by the lighting device 10 is also small, and a design with a high degree of freedom of the lighting device 10 matched to the cabin 2 is also possible.

  Further, as shown in FIG. 5, since the second light source 30 is at a position where the case main body 11 does not block the light emitted from the first light source 20, the loss of light as the entire lighting device 10 is also prevented. it can. Further, part of the direct light emitted from the second light source 30 and directed downward from the horizontally extending optical axis is blocked by the receiving portion formed of the lower flange 14 of the case body 11. Therefore, direct light from the second light source 30 can be prevented from going into the cabin 2, and the illumination range of the second light source 30 can be easily made other than the illumination range of the first light source 20 into the cabin 2. It can be limited.

FIG. 6 shows a second embodiment of the present invention.
In the present embodiment, the receiving portions corresponding to the second light source 30 and the flange 14 are provided in the unit 40 separate from the case main body 11, and both the ends of the unit 40 are both ends of the case main body 11. It is configured to be retrofitted.

  The unit 40 has a substantially U-shaped cross-sectional shape which is elongated and opened laterally, and the upper and lower end edges of the longitudinally extending side wall 41 respectively have an upper surface wall 42 extending laterally. The lower surface wall 43 is formed, and the lower surface wall 43 extends laterally longer as a receiving portion. Such a unit 40 can be easily integrally molded of a metal such as aluminum or a noncombustible synthetic resin.

  The substrate 31 of the second light source 30 may be attached to the inner surface of the side wall 41 in advance, and a protective cover 44 made of a transparent material may be attached to the outside of the substrate 31. Of the inner surfaces of the upper surface wall 42 and the lower surface wall 43 of the unit 40, two pairs of rail grooves facing each other in the vertical direction are provided on the deepest side and the opening side thereof. Between the rail grooves on the back side, both side edges of the substrate 31 are attached so as to be slidably fitted, and between the rail grooves on the open side, both side edges of the protective cover 44 are respectively It is attached in the state which fits slidably.

  According to the present embodiment, the configuration of the case body 11 itself can be simplified, and the degree of freedom in design can be enhanced with respect to the attachment site of the second light source 30 and the like. Although not shown, the case main body 11 can be configured in a simple shallow shallow box shape in which the upper and lower flanges 13 and 14 are omitted from the first embodiment.

FIG. 7 shows a third embodiment of the present invention.
In the present embodiment, a reflecting mirror 61 which is greatly curved as illustrated is provided as light distribution regulating means for narrowing the irradiation range of the direct light from the second light source 30 to a predetermined width extending vertically from the optical axis. . The reflecting mirror 61 is provided in a separate unit 50 to be retrofitted to both side ends of the case main body 11. In addition, since the second light source 30 is disposed at the concave top portion of the reflecting mirror 61, the upper and lower split pieces are combined with the second light source 30 interposed therebetween, or the second light source 30 is disposed at the bottom of the concave top portion. The light source 30 may be arranged.

  Similar to the unit 40 of the second embodiment, the unit 50 has a substantially U-shaped cross-sectional shape which is elongated and opened laterally, but the side wall 51, the upper surface wall 52 and the lower surface wall 53 are respectively It consists of another plate material. In the unit 50, the upper surface wall 52 and the lower surface wall 53 extend laterally by the same length. Although the second light source 30 is composed only of the LED chip 32 in the figure, it may of course be configured in the same manner as the first embodiment.

  According to the present embodiment, a narrow angle light distribution in which direct light from the second light source 30 is narrowed to a predetermined width extending vertically from the optical axis of the LED chip 32 is made by the reflecting mirror 61 as light distribution regulating means. be able to. Thereby, glare in the cabin 2 can be suppressed. The unit 40 of the second embodiment may be used instead of the unit 50, or may be directly attached to the side end surface 12 of the case main body 11 of the first embodiment. By combining the reflecting mirror 61 and the above-described receiving portion, the irradiation range of the second light source 30 can be more reliably limited to a range other than the irradiation range of the first light source 20 into the cabin 2.

FIG. 8 shows a fourth embodiment of the present invention.
In this embodiment, the configuration is basically the same as that of the third embodiment, but a lens 62 with a predetermined shape shown in the drawing is provided as light distribution restriction means. The lens 62 is provided to a separate unit 50 retrofitted to both side ends of the case main body 11. The lens 62 may be integrally formed so as to extend in the same cross-sectional shape.

  According to the present embodiment, the lens 62 serving as the light distribution control means makes the direct light from the second light source 30 narrow-angle light distribution narrowed to a predetermined width extending vertically from the optical axis of the LED chip Can. Thus, as in the third embodiment, glare in the cabin 2 can be suppressed. Such a lens 62 may also be combined with the above-described receiving portion. The same parts as those of the third embodiment are designated by the same reference numerals, and duplicate explanations are omitted.

  Furthermore, as another embodiment, the lighting device 10 can be used as a window in the ceiling 3 in the passenger compartment 2 of the railway vehicle 1. In such a case, although not shown, the upper side of the case main body 11 facing the opening on the bottom side of the light emitting surface 22 of the organic EL 21 is also opened. Thus, the lighting device 10 itself does not cover the front and back of the organic EL 21 of the first light source 20, and functions as a transparent window glass when light is not emitted.

  Such a case main body 11 is attached to an opening or a transparent window portion provided in advance on the ceiling 3. Here, with regard to the opening, it is preferable that the case 3 be opened so as to conform to the case body 11 so that a part of the ceiling 3 (wall material) is hollowed out, and the case body 11 be attached so as to fit therein. At this time, the second light sources 30 at both ends of the case main body 11 are arranged along the surface of the ceiling 3 so that light can be emitted directly to the corners.

Alternatively, a part of the ceiling 3 may be provided in advance as a window made of a transparent material such as tempered glass, and the case body 11 may be attached so as to overlap the inside of the window.
In any case, the lighting device 10 can be used not only as a simple means of light emission or display but also as a part of a window in the ceiling 3 such as a sunroof or the like when the organic EL 21 is not lighted.

  Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and changes or additions may be made without departing from the scope of the present invention. Also included in the present invention. For example, although the said embodiment demonstrated the example installed in the ceiling 3 in the passenger compartment 2 of the rail vehicle 1, you may apply to the indirect lighting in the passenger compartment in other vehicles, such as an aircraft and a motor vehicle.

  Further, the specific shapes of the case main body 11 and the first light source 20 are not limited to the illustrated example. Further, the arrangement of the second light source 30 is not necessarily limited to the side end of the case main body 11, and direct light is directed toward at least the corner of the ceiling 3 at a position not blocking the light irradiated from the first light source 20. It is good if it can be irradiated.

  Furthermore, although the example which used LED as the 2nd light source 30 was demonstrated, you may use a small light bulb etc. elsewhere, for example. Further, the light distribution regulating means is not limited to a reflecting mirror or a lens, and may be configured to be capable of distributing light at other narrow angles.

  The illumination device according to the present invention can be widely used as illumination in passenger compartments of railway cars, aircraft, automobiles and the like.

DESCRIPTION OF SYMBOLS 1 ... Rail vehicle 2 ... Guest room 3 ... Ceiling 4 ... Advertising 10 ... Lighting apparatus 11 ... Case main body 12 ... Side end surface 13 ... Flange 14 ... Flange (reception part)
20 First light source 21 Organic EL
22 ... light emitting surface 30 ... second light source 31 ... substrate 32 ... LED chip 40 ... unit 43 ... lower surface wall (receiving part)
50: Unit 61: Reflector (Light distribution control means)
62 ... lens (light distribution control means)

Claims (6)

In a lighting device disposed on a ceiling in a passenger compartment of a vehicle and provided with organic EL (electroluminescence) as a light source,
A first light source formed by processing the organic EL into a panel shape, a case main body attached to the ceiling with the first light source being held and the light emitting surface of the organic EL directed to the lower cabin, and light emission of the organic EL And a second light source comprising another light source capable of emitting light with higher directivity.
The first light source and the case body are formed in a rectangular shape extending in the longitudinal direction of the cabin in plan view,
At both ends of the case body, flanges are provided which extend laterally from the respective upper and lower edges,
In a space surrounded by the flange of the upper edge and the flange of the lower edge, the second light source is arranged to emit light directly toward at least a corner of the ceiling ;
In the space surrounded by the flange of the upper edge and the flange of the lower edge, a light distribution control means is provided which narrows the irradiation range of direct light from the second light source to a predetermined width extending vertically from the optical axis A lighting device characterized by Flange of the lower edge, the illumination device according to claim 1, characterized in that the receiving portion to block the light distribution toward the room beneath one of the direct light from the second light source. The second light source and the flange of the upper edge and the flange of the lower edge are provided on a unit separate from the case body, and the whole unit is retrofitted to both side ends of the case body. The lighting device according to 1 or 2 . Said second light source and the light distribution regulating means, wherein the case body is provided in separate units, according to claim 1, 2 or 3, characterized in Rukoto be retrofitted to both side ends of each said unit and the case body The lighting device described in. The second light source, the lighting device according to claim 1, 2, 3 or 4, characterized in that an LED that has a plurality of side by side arranged on a substrate extending in a slender (light emitting diode). The panel-shaped organic EL, which is the first light source, may be transparent when not emitting light,
In the case main body, the upper surface side facing the opening on the bottom side which exposes the light emitting surface of the organic EL is also opened,
The lighting device according to any one of claims 1, 2, 3, 4 and 5 , wherein the case body is attached to an opening or a transparent window portion provided in advance on the ceiling.

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