JP2015153693A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of realizing a light distribution control to provide wide upward lighting by indirect light and to provide bright downward lighting by direct light and indirect light, and being firmly attached while keeping insulation performance.SOLUTION: A light emission surface 12 is formed on a front surface of a casing 11, an upward lighting light source 20 is stored at a position at which an optical axis of light from the light source 20 does not cross the light emission surface 12 in the casing 11, an upward reflection surface 51 is provided to emit indirect light obtained by reflecting direct light from the upward lighting light source 20 from the light emission surface 12 obliquely upward, a downward lighting light source 30 is stored at a position at which an optical axis of light from the light source 30 crosses the light emission surface 12 and direct light from the downward lighting light source 30 is emitted from the light emission surface 12 obliquely downward, and downward reflection surfaces 52 and 53 are provided for emitting indirect light obtained by reflecting part of the direct light from the downward lighting light source 30 while superimposing the indirect light on the direct light from the light emission surface 12.

Description

  The present invention relates to an illumination device that can irradiate light in different upper and lower directions, and includes a light source for upper irradiation, a light source for lower irradiation, and a casing that accommodates each of these light sources. This is to ensure safety during vehicle inspection work in an inspection pit provided under the floor.

  Conventionally, in an inspection pit provided under the floor of a railway vehicle base, a fluorescent lamp has been mainly used as illumination for ensuring safety during vehicle inspection work. During vehicle inspection work in the inspection pit, it is necessary to widely illuminate the pit floor at the feet of the operator as well as the bottom of the vehicle to be inspected. Usually, fluorescent lamps are placed along both side walls or above both side walls in the pit. Along the pair of rails laid in parallel, they were installed so as to be evenly spaced from each other.

  Moreover, as a general trend of recent lighting fixtures, an LED lamp that uses an LED lamp as a light source instead of a fluorescent lamp is increasing. Here, as what can be utilized as a lighting fixture for an inspection pit, for example, there is an LED illuminator for station premises illumination (see, for example, Patent Document 1). It is conceivable to use such an illuminator as it is for inspection pit illumination.

  However, in the conventional general fluorescent lamp described above and the LED illuminator described in Patent Document 1, light distribution control for the inspection pit is not considered at all. That is, light is emitted in an unnecessary direction, and in particular, since the mounting position in the pit of the illuminator is in the vicinity of the operator's eye line, the light in the unnecessary direction gives glare to the operator. It was not preferable for safety. Moreover, there was a possibility that it could not be sufficiently illuminated over a wide range up to the operator's feet.

  In view of the problems in the case of adopting the conventional general fluorescent lamps and LED illuminators in the inspection pit as described above, the present applicant has already used the upper and lower parts as a dedicated lighting device used in a special environment in the inspection pit. There has been proposed an illuminating device that can irradiate light in another direction, and includes an upper irradiation light source, a lower irradiation light source, and a casing that accommodates these light sources (see, for example, Patent Document 2).

JP 2011-128948 A JP2013-137894A

  However, even in the illumination device described in Patent Document 2 described above, the vicinity of the bottom surface of the vehicle to be inspected can be sufficiently illuminated with indirect light due to the mounting position, but the pit floor surface at the foot of the operator The direct light that illuminates the light is likely to have insufficient brightness because the mounting position of the lighting device is above the pit floor surface. Therefore, an improvement for securing sufficient illuminance at a low cost has been desired, not a method of incurring high costs such as replacing a light source with high output.

  In addition, since the insulating device is required for installing the lighting device, for example, the lighting device is sandwiched between resin plates for mounting, and the resin bolts attached to the resin plate are used to fix predetermined walls such as both side walls in the pit. It was fixed at the installation location. With only such resin mounting parts, there is a possibility that the lighting device may fall off due to a resin bolt breaking due to insufficient strength. Therefore, the device for attaching more firmly using metal attachment components, maintaining insulation, was also desired.

  The present invention has been made paying attention to the above-mentioned problems of the prior art, and the upper part is widely irradiated with indirect light, and the lower part is inspected by light distribution control that irradiates brightly with direct light and indirect light. When used as lighting for pits, it can reduce glare to the operator and irradiate the lower surface of the vehicle and the feet efficiently, and in particular, can ensure sufficient illuminance even for downward irradiation. Furthermore, it aims at providing the illuminating device which can be firmly attached, maintaining insulation.

The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] Illumination that can irradiate light in different upper and lower directions, and includes an upper irradiation light source (20), a lower irradiation light source (30), and a casing (11) that accommodates these light sources. In the device (10):
A light emitting surface (12) having translucency is formed on the front side of the peripheral wall of the casing (11),
In the casing (11),
The upper irradiation light source (20) is housed in a position where the optical axis does not intersect the light emitting surface (12), and direct light from the upper irradiation light source (20) is reflected and reflected indirectly. Providing an upper reflection surface (51) for emitting light at least obliquely upward from the light exit surface (12);
In addition, the light source for lower irradiation (30) has its optical axis intersecting the light emitting surface (12), and direct light from the light source for lower irradiation (30) is obliquely downward from the light emitting surface (12). And a part of the direct light from the downward irradiation light source (30) is reflected, and the reflected indirect light is obliquely directed downward from the light emitting surface (12). An illuminating device (10) characterized in that a lower reflecting surface (52, 53) is provided so as to overlap and emit toward the surface.

  [2] A light source unit (40) which is housed in the casing (11) and attaches the upper irradiation light source (20) and the lower irradiation light source (30), and the light source unit (40) includes the light source unit (40). The lighting device (10) according to [1] above, wherein the upper reflecting surface (51) and the lower reflecting surface (52, 53) are provided integrally.

[3] The peripheral wall of the casing (11) is configured to be hermetically sealed with an insulating resin material, and a mounting surface (13) for fixing to an installation location is formed on the peripheral wall other than the front side.
The mounting surface (13) is provided with a mounted portion (19) that can be mounted in a state where a part of a mounting component for fixing to the installation location is not penetrated into the casing (11). The lighting device (10) according to [1] or [2] above.

  [4] The mounted portion (19) in the mounting surface (13) of the casing (11) is formed in a dovetail cross-sectional shape, and the bolt (110) as the mounting component is passed through the inside. A metal thin mounting plate (111) can be inserted, and the head of the bolt (110) is housed inside the mounted portion (19) together with the mounting plate (111). The illuminating device (10) according to [3], wherein a leg portion of the bolt (110) protruding through the plate (111) protrudes from the mounting surface (13).

[5] The upper illumination light source (20) and the lower illumination light source (30) are each composed of a light source having the same structure,
The irradiation range of indirect light from the upper reflection surface (51) is set larger than the irradiation range of direct light from the light source for lower irradiation (30) and indirect light from the lower reflection surface (52, 53). The illuminating device (10) according to [1], [2], [3] or [4] described above.

[6] The casing (11) has a long shape extending in both directions,
The upper irradiation light source (20), the lower irradiation light source (30), the upper reflection surface (51), and the lower reflection surface (52, 53) are also along the both sides of the casing (11). The illuminating device (10) according to [1], [2], [3], [4] or [5] above, characterized in that it has an elongated shape.

  [7] The upper illumination light source (20) and the lower illumination light source (30) are formed by arranging a plurality of LEDs (22, 32) on narrow substrates (21, 31), respectively. The illumination device (10) according to [1], [2], [3], [4], [5] or [6] described above.

[8] The lighting device (10) is to ensure safety during vehicle inspection work in the inspection pit (A) provided under the floor of the railway vehicle base,
The casing (11) is installed on a pair of rails (B) laid along both side walls of the opening cross section in the inspection pit (A) or above both side walls,
The upper illumination light source (20) indirectly illuminates the position of the line of sight of an operator who performs inspection work in the inspection pit (A) or the vehicle bottom surface on the pair of rails (B),
The lower illumination light source (30) directly and indirectly irradiates the floor surface of the inspection pit (A) or the operator's feet, [1], [2], [ 3], [4], [5], [6] or [7].

Next, the operation based on the above solution will be described.
According to the illuminating device (10) described in [1], light is emitted in different directions above and below the light emitting surface (12) on the front side of the casing (11). That is, in the casing (11), the direct light from the upper irradiation light source (20) does not cross the light emission surface (12) and is not emitted as it is, but is once reflected by the upper reflection surface (51). The reflected indirect light is emitted at least obliquely upward from the light emission surface (12).

  In the casing (11), the direct light from the light source (30) for downward irradiation intersects the light exit surface (12) and is emitted obliquely downward from the light exit surface (12). In addition, a part of the direct light from the downward irradiation light source (30) is reflected by the lower reflecting surface (52, 53), and the reflected indirect light is directly transmitted from the light emitting surface (12). The light is emitted while being superimposed obliquely downward.

  By such light distribution control, it is possible to irradiate light in two directions asymmetrical upward and downward by direct light and indirect light downward and by indirect light upward. For example, as described in [8] above, when the lighting device (10) for the inspection pit (A) of the railway vehicle base is used, the position of the operator's line of sight or the vehicle performing the inspection work in the inspection pit (A) Indirect light is irradiated on the bottom surface, and the inspection pit at the worker's feet (A) The floor surface is irradiated with direct light and indirect light, thus reducing glare to the worker and efficiently lowering the vehicle's lower surface and feet. Can be irradiated.

  Since the mounting position of the lighting device (10) in the inspection pit (A) is set at a relatively high position so as to be in the vicinity of the operator's line of sight, it is separated from the floor of the inspection pit (A) at the operator's feet. In particular, the light from the downward irradiation light source (30) is reflected not only by the direct light emitted as it is across the light emission surface (12) but also by the lower reflection surfaces (52, 53). Indirect light is also added, so that sufficient illuminance can be secured.

  According to the illuminating device (10) described in [2], the light source unit (40) for attaching the upper irradiation light source (20) and the lower irradiation light source (30) is provided, and the light source unit (40) includes: Since the upper reflecting surface (51) and the lower reflecting surface (52, 53) are also provided integrally, assembly work can be easily performed without increasing the number of parts, and the manufacturing cost can be reduced.

  According to the illuminating device (10) described in the above [3], the peripheral wall of the casing (11) is configured to be hermetically sealed with a resin material having an insulating property. A mounting surface (13) to be fixed is formed. Since the mounting surface (13) is provided with a mounted portion (19) in which a part of the mounting component for fixing to the installation location can be mounted without passing through the casing (11), the lighting device (10) Insulating properties can be surely maintained when mounting, and the mounting strength can be increased by using metal mounting parts.

  Thus, although the insulation of the illuminating device (10) was realized by a combination of material and structure, specifically, for example, as described in [4] above, the mounting surface (13) of the casing (11) The mounting portion (19) is formed in a dovetail cross-sectional shape, and a metal narrow mounting plate (111) through which a bolt (110) as a mounting part is inserted is inserted into the mounting portion (19) from the end. To do.

  Then, the head of the bolt (110) together with the mounting plate (111) is accommodated in the mounted portion (19). On the other hand, the leg portion of the bolt (110) protruding through the mounting plate (111) protrudes from the mounting surface (13), and the bolt (110) leg portion makes it easy for the installation location. Can be attached. Here, the bolt (110) is usually made of metal, and the mounting surface (13) of the casing (11) is connected to the mounted portion (19) via the metal mounting plate (111). Since it is firmly attached, sufficient attachment strength can be ensured.

  According to the illuminating device (10) described in [5] above, the upper irradiation light source (20) and the lower irradiation light source (30) are each composed of light sources having the same structure. As a result, the parts can be shared and the cost can be reduced. Moreover, the irradiation range of the indirect light from the upper reflection surface (51) is set larger than the irradiation range of the direct light from the light source for lower irradiation (30) and the indirect light from the lower reflection surfaces (52, 53). Thereby, regarding upward irradiation, the dazzling can be further reduced and a wide range can be illuminated.

  According to the illuminating device (10) described in [6] above, the casing (11) has an elongated shape extending in both directions, and includes an upper irradiation light source (20) and a lower irradiation light source (30). The upper reflecting surface (51) and the lower reflecting surface (52, 53) also have shapes extending along both sides of the casing (11). Thereby, by arranging each unit so as to be continuous in the longitudinal direction, for example, it is suitable for use as a wide range of illumination extending in the longitudinal direction.

  According to the illuminating device (10) described in [7] above, the upper irradiation light source (20) and the lower irradiation light source (30) each have a plurality of LEDs (22, 32) on the substrate (21, 31). ) Are arranged. As a result, the size can be reduced as compared with the conventional fluorescent lamp, the power consumption can be suppressed, the light distribution control is facilitated, and the service life is long, so that the replacement frequency can be reduced.

  According to the illuminating device of the present invention, when used as illumination for an inspection pit by light distribution control in which the upper side is widely irradiated with indirect light and the lower side is brightly irradiated with direct light, the glare to the operator is reduced. It can reduce, can irradiate the lower surface of a vehicle and a foot efficiently, and can assist the safety and quickness of work.

In particular, the light from the light source for downward irradiation intersects with the light exit surface, and not only the direct light emitted as it is, but also the indirect light reflected by the lower reflection surface, so that sufficient illuminance can be secured. It becomes possible.
In addition, it is possible to reliably maintain insulation even when the lighting device is attached, and it is possible to increase the attachment strength by using metal attachment parts.

It is a cross-sectional view (II sectional view taken on line II in FIG. 2) showing an enlarged internal structure of the illumination device according to the embodiment of the present invention. It is a front view which shows the illuminating device which concerns on embodiment of this invention. It is a top view which shows the illuminating device which concerns on embodiment of this invention. It is a bottom view which shows the illuminating device which concerns on embodiment of this invention. It is a left view which shows the illuminating device which concerns on embodiment of this invention. It is a longitudinal cross-sectional view (VI-VI sectional view taken on the line of FIG. 3) which expands and shows the internal structure of the illuminating device which concerns on embodiment of this invention. It is a front view which shows the cover main body which comprises the casing of the illuminating device which concerns on embodiment of this invention. It is a right view which shows the cover main body which comprises the casing of the illuminating device which concerns on embodiment of this invention. It is a rear view which shows the cover main body which comprises the casing of the illuminating device which concerns on embodiment of this invention. It is a perspective view which shows the side member which comprises the casing of the illuminating device which concerns on embodiment of this invention. It is the perspective view which shows the state which looked at the side member which comprises the casing of the illuminating device which concerns on embodiment of this invention from another angle. It is a perspective view which shows the side cover which comprises the casing of the illuminating device which concerns on embodiment of this invention. It is a longitudinal cross-sectional view which shows the side cover which comprises the casing of the illuminating device which concerns on embodiment of this invention. It is a side view which shows the light source unit of the illuminating device which concerns on embodiment of this invention. It is a side view which expands and shows the principal part of the light source unit of the illuminating device which concerns on embodiment of this invention. It is a front view which shows the light source unit of the illuminating device which concerns on embodiment of this invention. It is a bottom view which shows the light source unit of the illuminating device which concerns on embodiment of this invention. It is a front view which shows the attachment plate of the illuminating device which concerns on embodiment of this invention. It is a right view which shows the attachment plate of the illuminating device which concerns on embodiment of this invention. It is a front view which shows the stopper board of the illuminating device which concerns on embodiment of this invention. It is explanatory drawing which shows the light distribution control of the illuminating device which concerns on embodiment of this invention. It is a cross-sectional view which shows the attachment state of the illuminating device which concerns on embodiment of this invention. It is a block diagram which shows the control part of the illuminating device which concerns on embodiment of this invention. It is sectional drawing which shows roughly the state which attached the illuminating device which concerns on embodiment of this invention to the inspection pit of a railway vehicle base. It is a top view which shows roughly the arrangement | positioning which attached the illuminating device which concerns on embodiment of this invention to the inspection pit of a railway vehicle base.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment that represents the present invention will be described based on the drawings.
1 to 25 show an embodiment of the present invention.
The illuminating device 10 according to the present embodiment is capable of irradiating light in different directions up and down and is suitable as illumination for an inspection pit. Hereinafter, the case where the lighting device 10 is installed in an inspection pit of a railway vehicle base will be described as an example.

  First, the inspection pit will be described. As shown in FIG. 24, the inspection pit A is provided as a concave groove having a rectangular cross section under the floor of the railway vehicle base. The size of the inspection pit A is about 1400 mm if the width of the opening cross section is, for example, a standard gauge, and about 1000 mm if the width is narrow. In FIG. 24 (a), a pair of rails B and rails C are laid on the floor along the upper side walls of the inspection pit A. Here, the rail B is H steel which increases the height of the rail C, and a vehicle to be inspected is placed on the rail C. In FIG. 24B, the rail C is laid directly on the floor surface.

  The lighting device 10 may be installed inside the rail B shown in FIG. 24A as an installation location, or provided along the upper portions of both side walls in the inspection pit A as shown in FIG. The provided mounting groove may be installed as an installation location. A plurality of lighting devices 10 are installed so as to be arranged at equal intervals on the same straight line, and lighting control is independently performed for each. As shown in FIG. 25, each lighting device 10 is preferably arranged so that the distance between the centers is adjacent to each other, for example, about 2500 mm, and is alternately opposed on the left and right sides.

  As shown in FIG. 1, the illuminating device 10 includes an upper irradiation light source 20, a lower irradiation light source 30, and a casing 11 that accommodates these light sources. As shown in FIGS. 1 to 6, the casing 11 has a long shape extending in both directions. As shown in FIGS. 7 to 9, a casing body 11 a having a vertically long rectangular closed cross-section with both ends opened. I have. The cover body 11a can be molded or extruded using a resin material having insulating properties.

  The front side of the peripheral wall of the casing 11 (cover body 11a) is formed of a light-transmitting resin material as a light-emitting surface 12 having light-transmitting properties. Further, the peripheral wall of the casing 11 other than the front side, specifically, the back side, is formed as a mounting surface 13 that is fixed to the above-described installation location. As shown in FIG. 6, side members 14 are fitted into the openings on both ends of the cover main body 11 a, and the side cover 15 is screwed on the outside of each side member 14 with a waterproof packing interposed therebetween. It has been stopped.

  Here, as shown in FIGS. 10 and 11, the side member 14 is a hollow frame-shaped member, and fixes the side cover 15 to both ends of the cover main body 11a. Screw holes 14 a are respectively provided at the four corners of the side member 14. Further, as shown in FIGS. 12 and 13, the side cover 15 has a shallow box shape, and has a sealed structure by closing both end openings of the cover main body 11a. The side cover 15 is also provided with a screw hole 15a. In addition, a hole 15b for attaching a filter and a hole 15c for connecting a pipe portion 16 (see FIG. 6) for protecting a pipe used for fixing are opened. These are all closed to maintain the hermeticity.

  Further, as shown in FIG. 7, a rectangular opening 17 is formed on one end side (left end in FIG. 7) of the cover main body 11a, and the cover main body 11a is shown in FIG. As described above, the support bracket 100 is fixed. The support bracket 100 is made of a metal plate bent in an L-shaped cross section, and a power supply unit 101 is attached to the bottom surface portion, and a terminal box 102 is attached to the front surface portion. Here, the power supply unit 101 supplies power to the upper irradiation light source 20 and the lower irradiation light source 30, and the terminal box 102 is a terminal block for connection with the power supply.

  As shown in FIG. 2, the opening 17 of the cover body 11 a is normally closed by a metal panel member 18. As shown in FIG. 1, a waterproof packing 18a is disposed on the periphery of the opening 17, and the panel member 18 is screwed from above. Further, on the inner surface side of the light emitting surface 12 facing the panel member 18, a metal-shaped reinforcing bracket 18 b for fixing a screw and reinforcing the periphery of the opening 17 is disposed.

  Furthermore, the attachment surface 13 which is the back side of the cover main body 11a is provided with an attached portion 19 which can be attached in a state where a part of the attachment component for fixing to the installation location described above does not penetrate into the casing 11. ing. As shown in FIG. 1, the mounted portion 19 is formed in a dovetail cross-sectional shape that extends in both directions near the center of the mounting surface 13. A thin metal mounting plate 111 through which a bolt 110 as a mounting part is inserted can be inserted into the mounted portion 19 from the end.

  That is, the head portion of the bolt 110 is accommodated together with the mounting plate 111 inside the mounted portion 19, while the leg portion of the bolt 110 protruding through the mounting plate 111 protrudes from the mounting surface 13. Is set to Here, as shown in FIGS. 18 and 19, the mounting plate 111 has upper and lower edges that extend in both directions bent in a step shape, and the head portion of the bolt 110 is accommodated between the upper and lower edges. The edge extends from the opening width of the dovetail groove of the mounted portion 19 and is prevented from coming off.

Next, the light source unit 40 housed in the casing 11 will be described.
As shown in FIG. 1, the light source unit 40 is a member to which the upper irradiation light source 20 and the lower irradiation light source 30 are attached, and an upper reflection surface 51 and lower reflection surfaces 52 and 53 are integrally provided. The light source unit 40 is an integrally molded product that is extruded using a metal material such as aluminum in the cross-sectional shape shown in FIGS. Similarly to the casing 11, the light source unit 40 has a long shape extending in both directions.

  Specifically, the light source unit 40 includes a light source mounting portion 41 that is inclined obliquely in a mounting state in the casing 11, an upper reflection surface portion 42 that is curved and extends upward from a rear end edge of the light source mounting portion 41, and the light source. The mounting portion 41 includes a pair of lower reflecting surface portions 43 and 44 that are curved downward from the front and rear end edges, and a bottom surface portion 45 that extends from the lower end of the rear lower reflecting surface portion 44. In such a light source unit 40, the bottom surface 45 is screwed to a position near the light emitting surface 12 on the bottom wall of the cover body 11a.

  The light source mounting portion 41 is inclined obliquely, and the upper irradiation light source 20 is mounted on the upper surface side facing the upper side inside. Thereby, the upward irradiation light source 20 is accommodated in a position where the optical axis does not intersect the light emitting surface 12. Here, the inside of the upper reflection surface portion 42 facing the upper irradiation light source 20 is an upper reflection surface 51. The upper reflecting surface 51 is set so as to reflect the direct light from the upper irradiation light source 20 and emit the reflected indirect light obliquely upward from the light emitting surface 12.

  In addition, a lower irradiation light source 30 is attached to the lower surface side facing the outer lower side of the light source attachment portion 41. As a result, the light source for downward irradiation 30 is in a state where its optical axis intersects with the light emitting surface 12, and the direct light from the light source for downward irradiation 30 is emitted as it is obliquely downward from the light emitting surface 12. Is set to Further, the inner sides of the lower reflecting surface portions 43 and 44 surrounding the upper and lower sides of the light source 30 for lower irradiation are the lower reflecting surfaces 52 and 53, respectively. The lower reflecting surfaces 52 and 53 reflect the direct light that spreads up and down from the optical axis of the light source 20 for upper irradiation, and the reflected indirect light is emitted from the light emitting surface 12 in an obliquely downward direction toward which the direct light is directed. It is set to be.

  The light source 20 for upward irradiation has a shape extending along both sides as in the light source unit 40. Specifically, a plurality of surface-mounted LED chips 22 are arranged on the narrow substrate 21 at equal intervals. Is. Since the LED chip 22 is general, a detailed description thereof is omitted, but a type that emits light in a radiation range of a predetermined angle around an optical axis orthogonal to the substrate 21 is used. The emission color of the LED chip 22 can be arbitrarily selected. One surface of the substrate 21 is a mounting surface, and a wiring circuit to which the LED chip 22 is electrically connected is formed on the mounting surface.

  Similarly to the light source unit 40, the downward irradiation light source 30 has a shape extending along both sides, and has the same structure as the upward irradiation light source 20. That is, a plurality of surface-mounted LED chips 32 are arranged at equal intervals on a narrow substrate 31. The specific types of the upper irradiation light source 20 and the lower irradiation light source 30 are not particularly limited, but are preferably LEDs. LEDs have the advantages of small size, low power consumption, and long life, and are therefore suitable as light sources.

  As shown in FIG. 15, a pair of fitting grooves 41 a, 41 a facing each other are provided on the front and back of the light source attachment portion 41 in the light source unit 40. Between the fitting grooves 41a, both side edges of the substrate 21 of the upper irradiation light source 20 are fixed in a state of being fitted from one end thereof. Similarly, a pair of fitting grooves 41b and 41b that are opposed to each other are provided on the front and back of the lower surface side of the light source mounting portion 41. Between the fitting grooves 41b, the both side edges of the substrate 31 of the downward irradiation light source 30 are fixed in a fitted state from one end thereof. As shown in FIG. 1, stopper plates 46 are attached to both ends of the light source unit 40 to prevent the substrates 21 and 31 from coming off from the ends. Here, the stopper plate 46 is a plate material having the shape shown in FIG.

  As described above, the upper irradiation light source 20 and the lower irradiation light source 30 are composed of light sources having the same structure, but the irradiation directions and irradiation ranges thereof are different. In particular, the upper reflection surface 51 has a shape that greatly expands vertically as described above, and the irradiation range of the indirect light from the upper reflection surface 51 is from the direct light from the lower irradiation light source 30 and the lower reflection surfaces 52 and 53. It is set larger than the indirect light irradiation range. Each of the reflecting surfaces 51, 52, 53 is subjected to a surface treatment that increases the light reflection efficiency. Specifically, for example, a mirror finish or a white paint may be applied. .

  A pair of brackets 42 a and 42 b that are vertically opposed to each other are provided on the back side of the upper reflection surface portion 42 that forms the upper reflection surface 51. The brackets 42a and 42b are portions for increasing the strength of the upper reflection surface portion 42 and for positioning at the time of attachment. The brackets 42a and 42b can also be accommodated along the wiring in the internal space.

  Moreover, although illustration was abbreviate | omitted in FIGS. 1-6 in the casing 11, you may accommodate | store the control part 103 etc. of the illuminating device 10 shown in FIG. Here, the control unit 103 executes various lighting controls for the upper irradiation light source 20 and the lower irradiation light source 30. Specifically, the control unit 103 is a CPU (central processing unit) that performs a central function of control, a ROM that stores programs executed by the CPU and various kinds of fixed data, and temporarily executes the programs. It is constituted by a circuit having a RAM or the like for storing necessary data as a main part. In addition to turning on and off the upper illumination light source 20 and the lower illumination light source 30, the control unit 103 can adjust the brightness at the time of lighting steplessly. As a specific dimming method, generally known current dimming or PWM dimming may be used.

Next, the effect | action of the illuminating device 10 which concerns on this Embodiment is demonstrated.
As shown in FIG. 24, the present lighting device 10 is used, for example, as illumination for an inspection pit A in a railway vehicle base, and ensures safety during vehicle inspection work. As a specific installation location of the illuminating device 10, as shown in FIG. 24A, when the rail C is laid on the rail B, it may be installed inside the rail B, or FIG. As shown in 24 (b), it may be installed in a mounting groove provided along upper portions of both side walls in the inspection pit A.

  As shown in FIG. 1, the casing 11 is configured to be hermetically sealed with an insulating resin material, and a mounting surface 13 that is fixed to the rail B that is an installation location is formed on the back side of the peripheral wall. Has been. The attachment surface 13 has a dovetail-shaped attached portion 19 that does not penetrate in the casing 11, and a metal attachment plate 111 through which a bolt 110, which is an attachment component, is inserted is inserted from the end. Then, the head of the bolt 110 together with the mounting plate 111 is accommodated in the mounted portion 19, while the leg portion of the bolt 110 penetrating the mounting plate 111 protrudes from the mounting surface 13.

  Then, as shown in FIG. 22, the lighting device 10 can be easily moved with respect to the rail B by passing the leg portion of the bolt 110 protruding on the mounting surface 13 through the mounting hole in the rail B and tightening the nut 112. Can be attached to. As described above, when the lighting device 10 is mounted, the insulating property can be reliably maintained by the combination of the material and the structure, and the mounting strength can be sufficiently increased by using the metal mounting parts. In addition, as shown in FIG. 25, the illuminating device 10 is installed with two or more so that it may be located in the same straight line at equal intervals.

  Regardless of the installation location, the height position of the lighting device 10 is substantially the same as the position of the operator's line of sight in the inspection pit A, but it is dazzling like the light distribution of a fluorescent lamp used as conventional pit lighting. The thickness is reduced. In other words, according to the present lighting device 10, light distribution control in which the upper part is widely irradiated with indirect light and the lower part is brightly irradiated with direct light, reduces glare to the worker, and efficiently irradiates the lower surface of the vehicle and the feet. Thus, efficient illumination that is impossible with conventional fluorescent lamps becomes possible.

  More specifically, as shown in FIG. 21 (see FIG. 1 for the reference sign), the lighting device 10 emits light in a different direction above and below the light emitting surface 12 on the front side of the casing 11 in its normal installation state. . That is, in the casing 11, the direct light from the upper illumination light source 20 is not emitted as it is across the light emitting surface 12, but is reflected by the upper reflecting surface 51 once and this reflected indirect light is reflected. Is emitted from the light emitting surface 12 at least obliquely upward.

  In the casing 11, the direct light from the downward irradiation light source 30 crosses the light emitting surface 12 and is emitted obliquely downward from the light emitting surface 12 as it is. In addition, a part of the direct light from the downward irradiation light source 30 is reflected by a pair of upper and lower lower reflecting surfaces 52 and 53, and the reflected indirect light is obliquely downward directed directly from the light emitting surface 12. It is emitted in a superimposed manner toward

  By such light distribution control of the illuminating device 10, it is possible to irradiate light in two directions asymmetrically upward and downward by direct light and indirect light upward and by indirect light downward. Therefore, indirect light is applied to the position of the operator's line of sight or the bottom of the vehicle in the inspection pit A, and direct light and indirect light are applied to the floor of the inspection pit A that is the operator's foot. In addition, it is possible to reduce glare to the worker, to efficiently irradiate the lower surface of the vehicle and the feet, and to assist the safety and speed of work.

  Since the mounting position of the lighting device 10 in the inspection pit A is set at a relatively high position so as to be in the vicinity of the operator's line of sight, it is separated from the floor surface of the operator's feet. As shown in the figure, the light from the light source 30 for downward irradiation intersects with the light emitting surface 12 as well as the direct light emitted as it is, and the indirect light reflected by the lower reflecting surfaces 52 and 53 is also added. It is possible to secure a sufficient illuminance.

  In the present illumination device 10, by using the LED chips 22 and 32 as the upper irradiation light source 20 and the lower irradiation light source 30, not only the optimal light distribution control can be easily realized but also the desired brightness. Can be obtained with low power consumption, the entire apparatus can be downsized compared to a fluorescent lamp, and can be freely designed according to the installation location and the shape of the casing 11. Also, since LEDs have a longer life than fluorescent lamps, they do not need to be replaced frequently.

  Further, the upper irradiation light source 20 and the lower irradiation light source 30 are respectively attached to one light source unit 40, and the upper reflection surface 51 and the lower reflection surfaces 52 and 53 are integrally provided in the light source unit 40. It has been. As a result, assembly work can be easily performed without increasing the number of parts, and the manufacturing cost can be reduced.

  Further, the light source unit 40 has a long shape extending in the both side directions similarly to the casing 11, and the upper irradiation light source 20 and the lower irradiation light source 30 also have a shape extending in the both side directions of the light source unit 40. Thereby, by arranging each unit so as to be continuous in the longitudinal direction, it is suitable for use as a wide range of illumination extending in the longitudinal direction. In the present embodiment, the upper irradiation light source 20 and the lower irradiation light source 30 are each composed of the light sources having the same structure, so that the parts can be shared and the cost can be reduced.

  Furthermore, according to the present illumination device 10, the control unit 103 that turns on the upper irradiation light source 20 and the lower irradiation light source 30 is provided. The control unit 103 includes the upper irradiation light source 20 and the lower irradiation light source 30. In addition to turning on and off, the brightness at lighting can be adjusted steplessly. As a result, in addition to the above-described structural light distribution control, more various light distribution controls can be performed electrically. As another control, for example, the control unit 103 performs control so that only the lighting device 10 in the vicinity of the worker is selected and turned on according to the detection output from the human sensor provided in the inspection pit A. May be.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and there are changes and additions within the scope not departing from the gist of the present invention. Are also included in the present invention. For example, although the example which installed the illuminating device 10 in the inspection pit of a railway vehicle base was demonstrated, you may install in the inspection pit in other facilities, such as an elevator. Of course, the application is not limited to the illumination of the inspection pit. Further, the specific shapes of the casing 11, the light source unit 40, and the reflecting surfaces 51, 52, and 53 are not limited to the illustrated example.

  The lighting device according to the present invention can be widely used for lighting for inspection pits at railway vehicle bases.

A ... Inspection pit B ... Rail C ... Rail 10 ... Illumination device 11 ... Casing 12 ... Light exit surface 13 ... Mounting surface 14 ... Side member 15 ... Side cover 16 ... Pipe part 17 ... Opening part 18 ... Panel member 19 ... Attached 20: Light source for upward irradiation 30 ... Light source for downward irradiation 40 ... Light source unit 41 ... Light source mounting part 51 ... Upper reflective surface 52 ... Lower reflective surface 53 ... Lower reflective surface 100 ... Support bracket 101 ... Power supply unit 102 ... Terminal box 110 ... Bolt 111 ... Mounting plate

Claims (8)

In an illuminating device that can irradiate light in different upper and lower directions, and includes a light source for upper irradiation, a light source for lower irradiation, and a casing that houses each of these light sources,
Forming a light emitting surface having translucency on the front side of the peripheral wall of the casing;
In the casing,
The upper illumination light source is accommodated in a position where the optical axis does not intersect the light exit surface, and the direct light from the upper illumination light source is reflected, and the reflected indirect light is at least oblique from the light exit surface. Provide an upper reflective surface that emits upward,
And storing the light source for downward irradiation in a position where the optical axis thereof intersects the light exit surface and directs the direct light from the light source for downward illumination obliquely downward from the light exit surface, and A downward reflection surface is provided that reflects a part of the direct light from the light source for downward irradiation and emits the reflected indirect light in an obliquely downward direction toward the direct light from the light emission surface. Lighting device.   The light source unit is housed in the casing and attaches the light source for upper irradiation and the light source for lower irradiation, and the upper reflection surface and the lower reflection surface are integrally provided on the light source unit. The lighting device according to claim 1. The peripheral wall of the casing is configured to be hermetically sealed with a resin material having an insulating property, and a mounting surface for fixing to an installation location is formed in addition to the front side of the peripheral wall,
3. The attached portion capable of being attached to the attachment surface in a state in which a part of an attachment component for fixing to the installation location is not penetrated into the casing. Lighting device.   The mounted portion on the mounting surface of the casing is formed in a dovetail cross-sectional shape, and a metal narrow mounting plate through which the bolt as the mounting part is inserted can be inserted, The head portion of the bolt together with the mounting plate is accommodated inside the mounted portion, and the leg portion of the bolt protruding through the mounting plate protrudes from the mounting surface. 3. The lighting device according to 3. The upper irradiation light source and the lower irradiation light source are each composed of a light source having the same structure,
The indirect light irradiation range from the upper reflecting surface is set to be larger than the direct light from the lower light source and the indirect light irradiation range from the lower reflecting surface. The lighting device according to 3 or 4. The casing has a long shape extending in both directions,
The upper light source, the lower light source, the upper reflection surface, and the lower reflection surface are also elongated shapes extending along both sides of the casing, respectively. , 3, 4 or 5.   The illumination according to claim 1, 2, 3, 4, 5 or 6, wherein each of the upper irradiation light source and the lower irradiation light source is formed by arranging a plurality of LEDs on a narrow substrate. apparatus. The lighting device ensures safety during vehicle inspection work in an inspection pit provided under the floor of a railway vehicle base,
The casing is installed on a pair of rails laid along both side walls of the opening cross section in the inspection pit, or above both side walls,
The upper illumination light source indirectly illuminates the bottom of the vehicle on the pair of rails or the position of the line of sight of the operator who performs the inspection work in the inspection pit,
The light source for downward irradiation irradiates a floor surface in the inspection pit or a worker's feet directly and indirectly, The light source according to claim 1, 2, 3, 4, 5, 6 or 7 Lighting equipment.