JP2007302162A - Lighting device and vehicle cabin lighting system - Google Patents

Abstract

[PROBLEMS] To secure the lighting necessary for reading and using a personal computer for Shinkansen vehicle cabin lighting, and to make the entire room soft and relaxing, and the seat under the load shelf is difficult to reach ceiling light. Devise lighting fixtures that can be attached to the bottom of the cargo rack without hindrance and enhance the effect of interior lighting.
The bottom surface of a casing (3) whose bottom surface is an illumination window is a diffuse reflection surface (4) formed by an inclined surface, and the thin lighting device (1) is constructed by incorporating a thin lighting lamp (1) using a flat discharge tube into the casing (3). The thin illuminating lamp 1 emits light on both the front and back surfaces, and the lower surface cover 2 of the casing 3 has a direct illuminating window 2a facing the thin illuminating lamp 1 at the center thereof. There is an indirect illumination window 2b on the outside, and there is an opaque portion 2c between the direct illumination window 2a and the indirect illumination window 2b. The opaque portion 2c covers and shields the edge of the thin illumination lamp 1. That.
[Selection] Figure 1

Description

  The present invention relates to an in-room lighting device and an in-room lighting system for railway vehicles such as limited express vehicles including Shinkansen vehicles, and can effectively produce passenger room lighting for railway vehicles at a low cost.

Railway vehicles such as limited express vehicles such as Shinkansen vehicles (hereinafter simply referred to as “railroad vehicles”) are slightly more windows than limited express vehicles and commuting vehicles (for example, commuting vehicles in which seats are arranged vertically along the side walls). However, the brightness of the room largely depends on the interior lighting, and therefore the actual situation is that the entire room is illuminated with a relatively strong illuminance.
However, the passengers in the Shinkansen vehicles have been on board for a long time, and various people such as those who chat, read, use a personal computer, or relax with their eyes closed. Despite the various ways of spending time in the car in this way, the car lighting is simple lighting with a single luminaire provided at the center of the ceiling, while it is attached to the center of the ceiling. The brightness of the window seat by the overall lighting is darker than the brightness of the central seat (the reason is that the distance from the illuminating lamp is far away, and there is a cargo rack above and this disturbs the lighting from the center of the ceiling. ). For this reason, it is necessary to increase the illumination at the center of the ceiling (Japanese Patent Laid-Open No. 2004-345538).
In addition, considering the boarding and exiting of stations in the middle of the station, the railroad cargo racks are designed to be convenient for passengers to lift and lower luggage, so that the height of the cargo rack top is low and there is no feeling of pressure on the passenger's overhead. In order to satisfy the conflicting requirements that the height of the bottom surface of the cargo rack is high, a thin cargo rack is desirable.
From the above, it can not be said that the passenger room lighting of the railway vehicle is sufficiently lit for the passengers' various ways of spending.

  Considering the above circumstances, it is possible to illuminate a part with a spotlight such as a reading light with extremely weak overall illumination, such as airplane cabin lighting, but railway vehicles (for example, Shinkansen vehicles) In this case, unlike passenger airplanes, many passengers get on and off at the station frequently, so the above lighting method is not suitable for Shinkansen vehicles (note that spotlights are short-lived and easy to maintain. And not suitable for rail vehicle cabin lighting). Also, even if you try to adopt a spotlight illumination method, the spotlight can be attached only on the bottom of the left and right cargo racks, as mentioned above, because there is a reason that the railcar cargo rack is preferably thin, Attaching a spotlight to the cargo rack means that the cargo rack is partially thickened or the entire cargo rack is thickened at the spotlight mounting part, such as handling passengers' luggage, the comfort of the window seat, and the interior design. There are many disadvantages in terms of

In addition, an invention in which a flat illumination device using an LED array as a light source is assembled on the lower surface of a cargo rack for the purpose of suppressing heat generation of the illuminator, reducing power consumption, and improving the durability of the illuminating lamp for passenger cabin lighting of a railway vehicle No. 2005-324694. This is shown in FIGS. 7 and 8, and a thin flat illuminator 7 composed of an LED array 21 and diffusive reflectors 23 and 25 is arranged on the lower surface of the cargo rack in correspondence with each seat 9. However, this only illuminates the entire guest room uniformly with a large number of thin flat illuminators 7, so that the guest room illumination suitable for the above circumstances cannot be produced.
In addition, an invention in which a thin illuminating device is constituted by a fluorescent lamp and upper and lower lens films and is assembled to a cargo rack is described in Utility Model Registration No. 2568941, but a fluorescent lamp is used as in this example. If this is the case, the fluorescent light mounting part will be thicker, and even if a lens film is used, the upper surface of the luggage rack will be high, and there will be little improvement in terms of making it easier for passengers to lift and lower the load. It becomes lighting, and it is not possible to produce room lighting suitable for the above circumstances.

By the way, there are various ways to spend time in a railway vehicle, such as reading, using a computer, sleeping, talking, eating and drinking, etc. To ensure the overall lighting that does not interfere with passenger movement and passengers entering and exiting the room, while ensuring the lighting necessary for reading and using a computer, etc., and making the whole light soft and relaxing In order to illuminate the seat under the load shelf where it is difficult to reach the ceiling lighting, when the lighting device is attached to the lower surface of the load shelf, it should not impair the comfort in the cabin and the interior design, but rather the load. When attached to the bottom of the shelf, it is required to enhance the effect of lighting in the cabin and improve the interior design.
JP 2004-345538 A JP 2005-324694 A Utility Model Registration No. 2568941

  In consideration of the above circumstances, the present invention provides a passenger compartment for rail vehicles (limited express vehicles, bullet trains, etc.) in the seat below the cargo rack where ceiling lighting is difficult to reach while ensuring overall illumination in the cabin. In addition, while partially securing the lighting necessary for reading or using a computer, etc., it is possible to realize indoor lighting that can be relaxed by softening the entire room, and the lighting device can be attached to the bottom of the cargo rack without hindrance, An object of the present invention is to devise lighting for railway vehicles so that the effect of interior lighting can be enhanced.

[Invention of Claim 1]
Means 1 of the first invention of this application is the lighting apparatus according to claim 1, and is based on the following (a) to (d).
(A) a casing having an opening facing the bottom surface;
(B) a lower surface cover having an illumination window and covering the opening; and (c) a thin illuminating lamp built in the casing and illuminated from both the front and back surfaces;
(D) A diffusive reflecting member provided between the bottom surface of the casing and the back surface of the thin illuminating lamp.

[Action]
According to the structure of Claim 1, since the thin illuminating lamp is used as the light source of an illuminating device, the thickness of an illuminating device can be made thin. Further, since the thin illuminating lamp is surface emitting, it can irradiate the entire surface with substantially uniform luminance, and therefore, when the illumination window is viewed from the outside, there is no unevenness. The thin illuminating lamp emits and illuminates both front and back surfaces, and light emitted from the surface is directly irradiated to the outside through the illumination window. On the other hand, the light emitted from the back surface is reflected to the front surface side by a diffuse reflection member provided between the bottom surface of the casing and the back surface of the thin illuminating lamp, and is irradiated to the outside through the illumination window. The Thus, the light emitted from both sides can be efficiently irradiated to the outside.

[Invention of Claim 2]
Further, means 2 of the first invention is the illumination device according to claim 2, and in addition to the configuration of claim 1, that is, in addition to the above (a) to (d), the following (e) ( F).
(E) the illumination window is a direct illumination window installed facing the surface of the thin illumination lamp;
(F) It comprises at least one indirect illumination window adjacent to the direct illumination window.

[Action]
According to the structure of Claim 2, in addition to the effect | action and effect of the illuminating device of Claim 1,
Light emitted from the surface of the thin illumination lamp is irradiated to the outside through the direct window, and light emitted from the back surface of the thin illumination lamp is irradiated to the outside through the indirect window. The direct illumination window is adjacent to the indirect illumination window, and is irradiated with relatively weak light emitted from the indirect illumination window so as to be adjacent to strong light emitted from the direct illumination window. In the area where the irradiation is required, the light from the direct illumination window is irradiated so that the area becomes very bright, and the adjacent area is irradiated with the light, so that a very soft feeling is brought about.

[Invention of claim 3]
The means 3 of the first invention is the lighting device according to claim 3,
The configuration of claim 2, that is, according to the following (g) in addition to the above (a) to (f).
(G) An opaque portion is provided between the direct illumination window and the indirect illumination window, and the opaque portion and the edge portion of the thin illumination lamp are arranged to face each other.
[Action]
According to the structure of Claim 3, in addition to the effect | action and effect of the illuminating device of Claim 2,
The opaque part between the direct illumination window and the indirect illumination window covers and conceals the edge of the thin illumination lamp that is not irradiated with light, so the separation between the direct illumination area and the indirect illumination area becomes clear. The effect of lighting by direct lighting and indirect lighting becomes more prominent.

[Invention of claim 4]
The means 4 of the first invention is the lighting device according to claim 4,
In addition to the structure of Claim 2 or the structure of Claim 3, it is based on the following (h).
(H) The indirect lighting window is colored.
[Action]
According to the structure of Claim 4, in addition to the effect | action and effect of the illuminating device of Claim 2 or Claim 3,
By making the indirect illumination colored, it is possible to increase the degree of freedom of the illumination effect and enhance the effect.

[Invention of Claim 5]
5th of the means of 1st invention is the illuminating device of Claim 5, Comprising:
In addition to the configuration of any one of claims 1 to 4, the following (i) is provided.
(I) The diffuse reflection member is provided to be inclined with respect to the back surface of the thin illuminating lamp.
[Action]
According to the structure of Claim 5, in addition to the effect | action and effect of the illuminating device in any one of Claim 1 thru | or 4,
Since the diffuse reflection member is provided to be inclined with respect to the back surface of the thin illuminating lamp, the light emitted and irradiated from the back surface of the thin illuminating lamp is reflected and returned to the back surface of the thin illuminating lamp itself. Instead, the light is efficiently reflected toward the periphery of the thin illumination lamp. As a result, the amount of light irradiated to the indirect illumination can be secured.

[Invention of claim 6]
The means 6 of the first invention is the lighting device according to claim 6,
In addition to the structure of any one of claims 1 to 5, the following (nu) is employed.
(Nu) The diffuse reflection member is made of a bottom surface of a casing made of a metal material.
[Action]
According to the structure of Claim 6, in addition to the effect | action and effect of the illuminating device in any one of Claim 1 thru | or 5,
Since the diffuse reflection member is a metal material, the reflection efficiency can be ensured and the diffuse reflection member can be easily produced. Further, since the bottom surface of the casing is the diffuse reflection member, it is not necessary to provide a separate part as the diffusion member, and the cost is reduced accordingly.

[Invention of Claim 7]
Means 7 of the first invention is the lighting device according to claim 7, and in addition to the structure of any one of claims 1 to 6, is based on the following (l).
(L) The thin illuminating lamp is filled with a discharge gas in a discharge space formed by sealing the periphery of a pair of opposing dielectric plates, and a pair of dielectric plates is placed on one surface of the pair of dielectric plates. And a flat discharge tube that emits light from both sides of the pair of dielectric plates by applying a voltage to the electrodes.

[Action]
According to the structure of Claim 7, in addition to the effect | action and effect of the illuminating device in any one of Claim 1 thru | or 6, there exist the following effect | action and effect.
The flat discharge tube is capable of uniform surface emission as compared with other surface light sources (for example, a flat illuminator disclosed in Patent Document 1). In addition, there is a flat type discharge tube in which a pair of rod-shaped electrodes are formed at both ends of a discharge space formed by sealing the periphery between a pair of dielectric plates. The thickness of the discharge space is the same as that of the pair of rod-shaped electrodes. Because it is constrained, it cannot be thinned, and therefore the entire discharge tube cannot be thinned. However, since the flat discharge tube used in the present invention has no electrode in the discharge space, it can be made thin to about 2 to 3 mm, and thus the thickness of the entire lighting device can be reduced. .

[Invention of claim 8]
According to a first aspect of the present invention, there is provided a vehicle cabin lighting system according to claim 8, wherein the railroad vehicle individually illuminates a lower seat of a lighting device incorporating a thin illuminator on the bottom surface of the cargo rack. This is based on the following (wo) (wa) on the premise of the following guest room lighting system.
(V) A large number of lighting devices according to any one of claims 1 to 7 are incorporated at predetermined intervals on the lower surface of the cargo rack with the lighting window side of the lighting device facing downward.
(W) a driving device for driving the lighting device;

[Action]
According to the structure of Claim 8, there exists the following effect | action and effect.
The operation and effect of the lighting device according to any one of claims 1 to 7 is provided, and a plurality of the lighting devices are incorporated into the lower surface of the cargo rack with the lighting window side down, and the lighting device is driven. Since these illuminating devices are turned on by the driving device, the passenger of the railway vehicle can read and operate a personal computer by this direct illumination by the illuminating device incorporated in the lower surface of the cargo rack. In the other areas, soft light is irradiated by indirect illumination, so that it can be relaxed and relaxed.

[Invention of Claim 9]
The means 1 of the second invention is the passenger room lighting system for a railway vehicle according to claim 9, wherein the thin lighting device according to claim 8 is incorporated on the lower surface of the cargo rack to individually illuminate the lower seats of the thin lighting device. Assuming a passenger room lighting system for a railway vehicle (a railway vehicle such as a limited express vehicle or a bullet train), the following (a) to (c) are applied.
(A) The bottom surface inside the casing, whose lower surface is an illumination window, is a diffuse reflection surface by an inclined surface,
(B) The thin illuminating device is configured by incorporating a double-sided thin illuminating lamp into the casing.
(C) The lower surface cover of the casing has a direct illumination window facing the thin illumination lamp at the center, and an indirect illumination window outside the direct illumination window.

[Action]
The operation and effect of the structure of claim 9 will be described with reference to FIG.
A thin illumination lamp using a flat discharge tube is conventionally known (for example, Japanese Patent Application Laid-Open No. 2003-31182), and an illumination device using the thin illumination lamp is a load for a railway vehicle (for example, a Shinkansen vehicle) having a thickness of about 40 mm. It is possible to install it on the shelf without any trouble. And the said thin illuminating device provided with one thin illuminating lamp is arrange | positioned for every seat row | line | column by arrangement | positioning as shown to FIGS. 2-1 and 2-2.
The thin illuminating lamp 1 using the flat discharge tube emits light from the upper and lower surfaces, and the light from the lower surface passes through the direct illumination window 2a at the center of the lower surface cover 2 to directly illuminate the hand of the passenger. On the other hand, the light from the upper surface is reflected by the diffuse reflection surfaces 4 and 4 on the bottom surface of the casing 3 and transmitted through the indirect illumination windows 2b and 2b outside the lower surface cover 2 to indirectly illuminate the outside of the passenger's hand.

[Invention of Claim 10]
The means 2 of the second invention is the passenger compartment lighting system for a railway vehicle according to claim 10,
In addition to the above (a) to (c), assuming a cabin lighting system for railway vehicles (railway vehicles such as limited express vehicles and Shinkansen vehicles) that illuminate the left and right seats individually by incorporating a thin lighting device on the underside of the cargo rack This is due to the following (d).
(D) There is an opaque part between the direct illumination window and the indirect illumination window, and the opaque part covers and covers the edge of the thin illumination lamp.

[Action]
There is an opaque part between the direct lighting window and the indirect lighting window, and the opaque part covers and covers the edge of the thin lighting lamp. The area that is present is clear by the shielding, and therefore the contrast between the two illumination areas is clear and the lighting effect is remarkable.

  As described above, according to the invention of this application, it is possible to provide an illuminating device capable of realizing indoor lighting that can soften and relax the entire room while ensuring the illuminance of the entire lighting to such an extent that there is no hindrance to entering and exiting the room and movement. can do. In addition, it is possible to provide a vehicular cabin lighting system in which this lighting device is incorporated in a cargo rack.

[Embodiment of First Invention]
This embodiment is an embodiment of a vehicle cabin lighting system applied to a so-called Shinkansen vehicle. This will be described with reference to FIGS.
FIG. 1 is a longitudinal sectional view of the illumination device L in the present embodiment. FIG. 2-1 is a plan view of the vehicle cabin lighting system, and FIG. 2-2 is a vehicle premises perspective view including the illuminator L. FIG. FIG. 3 is a cross-sectional view in the lateral direction of the cargo rack according to the present embodiment, and FIG. 4 is a plan view of the lower surface cover of the lighting device L.

[Overall configuration of vehicle cabin lighting system]
In the vehicle cabin lighting system in this embodiment, there is a ceiling lighting device L1 for indirect lighting with a fluorescent lamp 11 at the center of the ceiling, and the vicinity of the ceiling is softly illuminated, while seat rows are placed on the lower surfaces of the left and right cargo racks. Each lighting device L is incorporated, the passenger's hand is brightly illuminated by direct illumination, and the front and back thereof are softly illuminated by indirect illumination (see FIGS. 2-1, 2-2, and 3). .

[Configuration of Illumination Device L]
As in the conventional example of FIG. 8, the illuminating device L is sequentially connected in the longitudinal direction and assembled to the lower surface of the cargo rack (see FIGS. 2-1 and 2-2). Arranged in a line in the direction, the illumination light is irradiated from an illumination window 2 (see FIG. 4: illumination windows 2a-1, 2a-2, 2b) provided on the lower surface cover 2. And the illuminating device L is comprised by the stainless steel casing 3, the thin illuminating lamp 1 by a flat discharge tube, and the lower surface cover 2 (refer FIG. 1), and the bottom face of the casing 3 is a longitudinal direction (vehicle). Diffuse reflection surfaces 4 and 4 are formed as diffuse reflection members inclined in the front-rear direction.

  This embodiment is an example in which the present invention is applied to a so-called Shinkansen vehicle. In the cabin lighting system of this embodiment, there is a ceiling illuminator L1 of indirect illumination by a fluorescent lamp 11 at the center of the ceiling, and the vicinity of the ceiling is softly illuminated. On the other hand, the lighting device L is incorporated in the lower surfaces of the left and right cargo racks, and the hands of the passengers are brightly illuminated by direct illumination, and the front and back thereof are softly illuminated by indirect illumination (FIG. 2-). 1, FIG. 2-2, FIG. 3). In addition, the illuminating device L for every seat row is arrange | positioned at the lower surface of a cargo rack.

  The lighting device L is sequentially connected in the longitudinal direction and assembled to the lower surface of the cargo rack (see FIGS. 2-1 and 2-2) as in the conventional example of FIG. Arranged in a line in the vehicle front-rear direction at regular intervals according to the seat pitch, the illumination light is emitted from the illumination windows 2 (illumination windows 2a-1, 2a-2, 2b) provided on the lower surface cover 2. And the illuminating device L consists of the thin illuminating lamp 1 by the casing 3, the surface type discharge tube, and the lower surface cover 2 (refer FIG. 1), and the bottom face of the casing 3 is diffused reflection inclined in the longitudinal direction (vehicle front-back direction). Surfaces 4 and 4. The thin illuminating lamp 1 has the configuration shown in FIG. That is, a pair of glass substrates 31 and 31 are arranged to face each other so as to be separated by a predetermined discharge distance, and a discharge gas 40 is sealed in a space between the glass substrates 31 and 31 to form a discharge space 40. Transparent electrodes 32 and 32 are provided on the outside of 31 and 31, and phosphor films 45 and 45 are formed on the inner side surfaces of the glass substrates 31 and 31. The fluorescence of the phosphor films 45 and 45 is transmitted from the transparent electrodes 32 and 32. Illuminate both the upper and lower sides.

  The lower cover 2 has a central direct illumination window 2a and front and rear indirect illumination windows 2b, 2b. In this embodiment, the cover 2 is made of milky white glass cloth, and the direct illumination window 2a, The outside of the indirect illumination window 2b is an opaque portion 2c (see FIGS. 1 and 4). Moreover, the direct illumination window 2a is based on the narrow strip-shaped transparent window 2a-1 in the center and the front and rear strip-shaped transparent windows 2a-2.

The thin illuminating lamp 1 is located above the central direct illumination window 2a, and its periphery is covered with an opaque portion 2c outside the transparent portion.
The light emitted from the lower surface of the thin illuminating lamp 1 passes through the direct illumination window 2a formed by the central narrow band-like transparent window 2a-1 and the front and rear belt-like transparent windows 2a-2, and directly illuminates the passenger's hand. .
On the other hand, the light emitted from the upper surface of the thin illuminating lamp 1 is diffused and reflected by the diffuse reflection surfaces 4 and 4 on the bottom surface of the casing 3, and passes through the front and rear indirect illumination windows 2b before and after the passengers seated on the seat. Is illuminated (indirect lighting). And the area | region outside the direct illumination area | region of a passenger | crew's hand and the indirect illumination area | region before and behind that is a non-illumination area | region (area | region where illumination light was shielded by the opaque part 2c of a lower surface cover). Therefore, the non-illuminated area, the indirect illuminated area, the non-illuminated area, the direct illuminated area, the non-illuminated area, the indirect illuminated area, and the non-illuminated area are present in the longitudinal direction.

[Lighting experiment result of illuminator L]
The brightness immediately below the direct illumination window 2a and the indirect illumination window 2b in this embodiment is as shown in FIG. 5, and the measurement points A, B, and C of the indirect illumination window 2b are 122, 206, 353 cd / m ² , direct. The measurement points D, E, and F of the illumination window 2a are 2400, 2650, and 2350 cd / m ² , and the brightness around the passengers is extremely non-uniform. It is possible to produce lighting in various ways.

[Effect of the first embodiment]
Next, the effects of this embodiment are as follows.
(1) Since the illumination device L uses the thin illumination lamp 1 as a light source, the thickness of the illumination device L can be reduced.
(2) Since the thin illuminating lamp 1 is surface emitting, the entire surface can be irradiated with substantially uniform luminance, and when the illumination window is viewed from the outside, the brightness is not uneven.
(3) The thin illuminating lamp 1 emits and illuminates light from both the upper and lower sides (front and back), and light emitted from the lower surface (front surface) is directly irradiated to the outside through the illumination window 2. On the other hand, the light emitted from the upper surface (rear surface) is reflected to the front surface side by the diffuse reflection surfaces 4 and 4 formed on the inner bottom surface of the casing 3 to be irradiated to the outside through the illumination window. Thus, the light emitted from both sides can be efficiently irradiated to the outside.

(4) The light emitted from the surface of the thin illuminating lamp 1 is irradiated to the outside through the direct illumination window 2a, and the light emitted from the back surface of the thin illuminating lamp 1 is exposed to the outside through the indirect illumination window 2b. Irradiated. Since the direct illumination window 2a is on both sides in the front-rear direction of the indirect illumination window 2b, relatively weak light emitted from the indirect illumination window 2b is irradiated so as to cover the front and back of the strong light emitted from the direct illumination window 2a. Because the light from the direct lighting window 2a is irradiated to the hand of the passenger who needs strong light irradiation, it becomes very bright, and the other peripheral areas are irradiated with faint light. A soft feeling is created.

(5) Since the opaque portion 2c between the direct illumination window 2a and the indirect illumination window 2b covers and conceals the edge of the thin illumination lamp that is not irradiated with light, the direct illumination area and the indirect illumination area are separated from each other. It becomes clear and the lighting effect of direct lighting and indirect lighting becomes more remarkable.
(6) By making the indirect lighting window 2b colored, it is possible to increase the degree of freedom of lighting effects and enhance the effects.
(7) Since the diffuse reflection surfaces 4 and 4 are provided so as to be inclined with respect to the upper surface (back surface) of the thin illuminating lamp 1, light emitted and irradiated from the upper surface (back surface) of the thin illuminating lamp 1 The light is efficiently reflected toward the periphery of the thin illuminating lamp 1 without being reflected back to the upper surface (back surface) of the lamp 1 itself. As a result, the amount of light irradiated to the indirect illumination can be secured.

(8) Since the diffuse reflection part surfaces 4 and 4 are the bottom surfaces of the casing 3 made of stainless steel, high reflection efficiency can be secured.
(9) Since the bottom surface of the casing 3 is the diffuse reflection surfaces 4 and 4, it is not necessary to provide a separate part as a diffusion member, and the cost is reduced accordingly.
(10) The flat discharge tube as the thin illuminating lamp 1 is capable of uniform surface emission as compared with other surface light sources (for example, the flat illuminator disclosed in Patent Document 1).
(11) Another structure of the flat discharge tube is one in which a pair of rod-shaped electrodes are formed at both ends of a discharge space formed by sealing the periphery between a pair of dielectric plates. Since the thickness of the space depends on the pair of rod-shaped electrodes, it cannot be reduced, and therefore the entire discharge tube cannot be reduced. However, since the flat discharge tube used in the present invention has no electrode in the discharge space, it can be made as thin as about 2 to 3 mm. As a result, the thickness of the entire lighting device can be reduced.

(12) A plurality of the illuminating devices L and the illuminating window 2 side facing downward were incorporated into the bottom surface of the cargo rack to constitute an illuminating system. And these illuminating devices were turned on by the drive device which drives an illuminating device. Passengers on the railway vehicle can read a book or operate a personal computer with this direct illumination by the illumination device built in the bottom surface of the cargo rack. Since the range illuminated by this direct illumination is relatively narrow, the overall soft cabin atmosphere is not impaired, and there is no hard feeling like illumination by a normal spotlight. On the other hand, the other areas are illuminated with soft light by indirect lighting, so that they can spend a relaxing time.

(13) Since the endurance time is extremely long compared to the normal spotlight endurance time (for example, 200 to 2000 hours for passenger light reading lights), the maintenance is easy. The cost including the maintenance cost is very low.

As described above, in this embodiment, the center of the ceiling and the vicinity thereof are indirectly illuminated with the fluorescent lamp, and the illumination device L (for the thin illumination lamp 1) provided for each seat row on the lower surface of the cargo rack is used by the passenger. Because it directly illuminates and indirectly illuminates the front and back, it is wrapped in soft illumination as a whole, creating a calm atmosphere.
And since the range directly illuminated by the illuminating device L is relatively narrow, the overall soft cabin atmosphere is not impaired, and since this is due to the thin illumination lamp, There is no such a tight feeling.
Further, since the durability time is extremely long compared with the durability time of a normal spotlight, the maintenance is easy, and the cost including the maintenance cost is extremely low as described above.

[Other Embodiments]
In addition, this invention is not limited to said embodiment, It is possible to implement with a various form in the range which does not deviate from the summary. Other embodiments are listed below.

In the present invention, a double-sided light emitting lamp other than the flat discharge tube may be used as the thin lamp.
Further, the structure of the flat discharge tube is not limited to that used in the first embodiment.
Moreover, in 1st Embodiment, although the bottom face of the casing inner surface is utilized as a diffuse reflection member, you may use the diffuse reflection member as another member.

In the first embodiment, the illumination window is divided into direct illumination and indirect illumination. However, the present invention is not limited to this. In the present invention, the illumination window may function as one illumination window. Moreover, although the opaque part is provided between the object for direct illumination and the object for indirect illumination, in this invention, it is not limited to this.
Moreover, in 1st Embodiment, although the guest room lighting system applied in the passenger room of the Shinkansen vehicle is assumed, it is not limited to this. For example, it is conceivable to apply a cabin lighting system having a relatively soft atmosphere to green vehicle cabins of express trains and high-speed trains. Moreover, this illuminating device can also be applied for buses and other railway vehicles. Further, the present invention is not limited to this type of vehicle.

These are longitudinal cross-sectional views of the illuminating device L in an Example. These are top views of the illumination system of an Example. These are the cabin perspective views of the vehicle provided with the illumination system of the Example. These are transverse direction sectional views of the load shelf of an example. FIG. 3 is a plan view of a lower surface cover. FIG. 5 is a list showing brightness measurement values at illumination measurement points in FIG. 4. (A) is the perspective view which fractured | ruptured a part of thin-type illumination lamp, (b) is sectional drawing. These are sectional drawings of the prior art example of the thin flat illuminating device laid on the lower surface of the luggage rack of a railway vehicle. These are the vehicle body side views of the prior art example by which the thin plane illuminating device was laid by the cargo shelf lower surface.

Explanation of symbols

L: Illumination device L1: Ceiling illumination 1: Thin illumination lamp with surface discharge tube
2: Bottom cover 2a: Direct illumination window 2a-1, 2a-2: Strip-shaped transparent window 2b: Indirect illumination window 2c: Opaque part 3: Casing 4: Diffuse reflection surface 11: Fluorescent lamps 21, 22: Strip-shaped transparent window 31: Glass substrate 32: Transparent electrode 45: Phosphor film

Claims (10)

A casing having an opening facing the bottom surface;
A lower surface cover having an illumination window and covering the opening;
A thin illuminating lamp built in the casing and illuminated from both front and back sides,
An illuminating device comprising: a diffuse reflection member provided between a bottom surface of the casing and a back surface of the thin illuminating lamp. The illumination window is a direct illumination window installed facing the surface of the thin illumination lamp,
The lighting device according to claim 1, comprising at least one indirect lighting window adjacent to the direct lighting window. An opaque part is provided between the direct lighting window and the indirect lighting window,
The lighting device according to claim 2, wherein the opaque portion and an end edge portion of the thin illumination lamp are arranged to face each other.   The lighting device according to claim 2 or 3, wherein the indirect lighting window is colored.   The illumination device according to any one of claims 1 to 4, wherein the diffuse reflection member is provided to be inclined with respect to a back surface of the thin illumination lamp.   The lighting device according to claim 1, wherein the diffuse reflection member includes a bottom surface of a casing made of a metal material.   The thin illuminating lamp fills a discharge space formed by sealing the periphery of a pair of opposed dielectric flat plates with a discharge gas, and one of the pair of dielectric flat plates has a pair of thin film shapes. The discharge electrode according to claim 1, further comprising a flat discharge tube that emits light from both surfaces of the pair of dielectric plates by applying a voltage to the electrode. Lighting device. A passenger room lighting system for a railway vehicle comprising a lighting device that individually illuminates a lower seat of a lighting device that incorporates a thin illumination lamp that emits light from both sides on the lower surface of a cargo rack,
A large number of the lighting devices according to any one of claims 1 to 7 are incorporated at predetermined intervals on the lower surface of the cargo rack with the lighting window side of the lighting device as a lower surface,
A vehicle cabin lighting system comprising a driving device for driving the lighting device. A passenger room lighting system comprising the railcar lighting device according to claim 8,
The bottom surface of the casing whose lower surface is an illumination window is a diffuse reflection surface by an inclined surface,
The lighting device is configured by incorporating a thin illumination lamp that emits light from both sides into the casing,
The passenger compartment lighting system for a railway vehicle, wherein the lower surface cover of the casing has a direct illumination window facing the thin illumination lamp at a center thereof, and an indirect illumination window outside the direct illumination window. The passenger compartment lighting system for a railway vehicle according to claim 9,
The lower cover of the casing has a direct illumination window facing the thin illumination lamp in the center, and has an indirect illumination window outside the direct illumination window,
A railway vehicle cabin lighting system, wherein there is an opaque portion between the direct illumination window and the indirect illumination window, and the opaque portion covers and covers the edge of the thin illumination lamp.

Images