JP4330004B2 - Railway vehicle lamp - Google Patents

Description

  The present invention relates to a lamp for illuminating a passenger compartment of a railway vehicle.

  In general, in a passenger room of a railway vehicle, a lamp having a fluorescent lamp as a light source is attached to a ceiling portion thereof, and a straight tube is frequently used as the fluorescent lamp of the light source, and a pair of power supplies is supported by supporting both ends of the fluorescent lamp. A lamp having a lamp socket is used (see, for example, Patent Document 1).

  Conventionally, as described in Patent Document 1 described above, such a lamp mainly uses a press-formed product using a rolled steel plate such as SPCC. An example of the configuration is shown in FIGS. 6 and 6 as a perspective view (A) and an enlarged side view (B).

  In the example of FIG. 6, a pair of lamp sockets 62 are fixed to both ends of a lamp body 61 made of a press-formed product of a rolled steel plate, and both ends of the fluorescent lamp 63 are supported by each lamp socket 62. Each of the lamp sockets 62 is covered with a part of both ends of the fluorescent lamp 63 and a socket cover 64 provided below the fluorescent lamp 63. By this socket cover 64, the fluorescent lamp 53 should be removed from the lamp socket 62. Is also configured to prevent the fluorescent lamp 63 from falling. The socket cover 64 is conventionally made of resin, and rotates around a horizontal shaft 65 supported by a support mechanism (not shown) attached to the lamp body 61 together with the lamp socket 62 to open and close. Thus, the fluorescent lamp 63 can be replaced.

  In the example of FIG. 7, end units 720 including lamp sockets 72 are fixed to both ends of a lamp body 71 that is also a press-formed product of a rolled steel plate, and fluorescent light is emitted to each lamp socket 72 of the end unit 720. In addition to supporting both ends of the lamp 73, each end unit 720 is provided with a guide groove so that the socket cover 74 is slidably supported, and the socket cover 74 can be opened and closed by this sliding.

Here, as a lamp for a railway vehicle, there is also known a configuration in which a glove that covers the entire fluorescent lamp is provided for the purpose of softening the light from the fluorescent lamp (see, for example, Patent Document 2). However, in recent years, it is desirable not to place long plastic objects in the vehicle cabin as much as possible from the viewpoint of safety in the event of a fire. For this reason, it is expected that lamps that do not have a glove will be the mainstream as lighting for interior lighting of railway vehicles.
JP-A-10-134628 JP 2001-184931 A

  By the way, in the conventional railcar lamp illustrated in FIG. 6 and FIG. 7 configured to prevent the fluorescent lamp from falling by the socket cover, since the lamp body is a press-formed product using a rolled steel plate, Since it is difficult to obtain a complicated shape with a certain degree of accuracy with a low degree of design freedom, it is necessary to prepare and install a socket cover opening / closing mechanism separately from the lamp body, etc. There is a problem that the number of points and assembly man-hours increase.

  Also, the design in which resin socket covers are attached to both ends of a lamp body made of metal press-molded products, even if the lamp body is continuously mounted in the longitudinal direction on the ceiling of a railway vehicle, The feeling of being arranged discretely cannot be erased, and a continuous feeling does not occur.

  The present invention has been made in view of such circumstances, and can be designed more variously than a conventional railcar lamp, and the lamp cover can be opened and closed without using a separate member. An object of the present invention is to provide a railcar lamp that can be provided directly on the main body to simplify the structure and reduce the number of parts.

  In addition to the above, another object of the present invention is to provide a railway vehicle that can provide a continuous feeling of the lamp when attached to the ceiling of the railway vehicle, and can also improve the total design in use. It is to provide a lighting fixture.

In order to solve the above-mentioned problems, a railcar lamp according to the present invention is provided with a lamp body in which two lamp sockets for supporting and supplying power to both ends of a fluorescent lamp are mounted near both ends in the longitudinal direction. Formed by a molding material, the lamp body is formed with two grooves along the longitudinal direction so as to pass through both sides of the fluorescent lamp, and the end portions of the lamp sockets and fluorescent lamps are formed in the grooves. A socket cover made of an aluminum extrusion molding material for covering a part of the socket from below is slidably fitted, and a positioning mechanism for locking the socket cover at a lower position of the lamp socket is provided . The positioning mechanism consists of a ball plunger attached to the lamp body side and a hole provided on the socket cover side, and the ball plunger ball enters the hole. Characterized by the socket cover is locked by a (claim 1).

Further, in order to solve the other problems described above, the invention according to claim 2 is arranged such that a plurality of the lamp bodies are adjacent to each other in the longitudinal direction, and the grooves are continuous between the lamp bodies. A region including two lamp sockets provided on both sides of the boundary portion between two lamp bodies adjacent to each other is characterized by being covered with a common socket cover.

The present invention adopts an aluminum extrusion molding material having a high degree of freedom in the design of the cross-sectional shape and high shape accuracy in the lamp body, and supports the socket cover slidably on the lamp body for opening and closing. In addition to forming two grooves for the purpose , the socket cover is also made of an aluminum extrusion molding material. The socket cover is slidably fitted into the two grooves, and the socket cover is locked at a position below the lamp socket. As a positioning mechanism for this purpose, a mechanism using a ball plunger is employed to solve the above-described problems.

  That is, in the present invention, a lamp body in which lamp sockets for fluorescent lamps are mounted in the vicinity of both ends in the longitudinal direction is formed of an aluminum extrusion molding material, and each of the lamp bodies has a longitudinal position at a position passing through both sides of the fluorescent lamp. Slots along the direction are formed, and plug sockets attached to both ends of the lamp body and socket covers covering the vicinity below are slidably fitted into the grooves, and the socket covers are engaged at the required positions. A positioning mechanism for stopping is provided. With this configuration, the socket cover can be opened / closed to the lamp body itself without attaching other members such as a horizontal axis for opening / closing the socket cover to the lamp body and an end unit for sliding the socket cover. A mechanism can be provided, and these other members can be dispensed with.

Further, since the aluminum extruded material also socket cover, it is possible to produce a sense of unity of the lamp body and the socket cover, the overall design can be made favorable simultaneously, conventional resin Compared with the case where a socket cover made of metal is used, the strength can be improved.

Furthermore, since the as a mechanism for positioning the socket cover on the lamp body, a ball plunger for biasing the ball Lumpur in the axial direction of the support cylinder (screws) are constituted by holes formed in the socket cover, commercially available It is possible to reliably prevent the socket cover from being displaced due to vibration or the like under a simple configuration using the.

Then, as in the invention according to claim 2 , a plurality of lamp bodies are adjacent to each other in the longitudinal direction, and the two grooves are adjacent to each other in a state where they are arranged continuously between the plurality of lamp bodies. If two lamp sockets facing away from each other with the boundary between the lamp body are configured to be covered with a common socket cover, the boundary between adjacent lamp bodies can be covered with the socket cover. A continuous feeling of the lamp can be given.

  According to the present invention, the lamp body is formed of an aluminum extrusion molding material, and the groove for sliding the socket cover to open and close is formed in the lamp body. It does not require a separate member such as a horizontal axis for opening and closing the lamp and its support mechanism, and an end unit equipped with a slide mechanism. As a result, the structure of the lamp is simplified, the number of parts is reduced, and the number of assembly steps is reduced. The cost reduction based on the above can be achieved, and at the same time, the design can be improved as the appearance is simplified.

Further, since the socket cover is also made of an aluminum extrusion molding material, it is possible to produce a sense of unity between the lamp body and the socket cover, and at the same time, it is possible to improve the strength of the socket cover.

Further, arranged adjacent the plurality of lamp body in the longitudinal direction, claim you configured to cover the two plug sockets for back to back across its boundary in the lamp body adjacent to one another in a common socket cover by the invention according to 2 lever, it can be inconspicuous over the boundary portion of the adjacent lighting unit body can produce a continuous feeling of the lamp in the vehicle compartment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a partially omitted view showing an embodiment of the present invention as viewed from the side, and FIG. 2 is an AA enlarged sectional view thereof.

  The lamp body 1 is made of an aluminum extrusion molding material having a uniform cross-sectional shape, and reflectors 12 projecting obliquely outward are integrally formed on both sides of the open end of the U-shaped cross-section 11. Grooves 13 along the longitudinal direction are formed at the base of the U-shaped cross-section 11.

  In the vicinity of both ends of the lamp body 1, lamp sockets 2 are respectively fixed to the inside of the U-shaped cross section 11, and both ends of the fluorescent lamp 3 are inserted into the respective lamp sockets 2. Each lamp socket 2 is connected to a ballast 5 arranged on the outer upper side of the U-shaped cross section 11 of the lamp body 1, and the fluorescent lamp 3 is supplied with power from the ballast 4 via the lamp socket 2 and lights up. .

  The lamp body 1 has a lid 6 that closes the opening of the U-shaped cross section 11 at an intermediate portion thereof except for both end portions where the respective lamp sockets 2 are disposed, at a plurality of locations via appropriate spacers. The space surrounded by the U-shaped cross-section 11 and the lid 6 is used as a wiring space.

  Now, the lower part of each lamp socket 2 at both ends of the lamp body 1 and the vicinity of both ends of the fluorescent lamp 3 in the vicinity thereof are covered with a socket cover 4 through a slight gap. The socket cover 4 is an aluminum extrusion molding material having a substantially U-shaped cross section and integrally formed with ears 41 protruding outward on both sides of the U-shaped opening end. The ears 41 on both sides are lamps. It fits in the above-mentioned groove 13 formed in the main body 1, and is supported so as to be slidable in the longitudinal direction of the lamp body 1 using this groove 13 as a slide guide.

  The cross-sectional shape of the ear portion 41 of the socket cover 4 is a cylindrical shape along the longitudinal direction at the tip of the flat plate portion 41a that protrudes horizontally from the U-shaped opening as shown in FIG. The cross-sectional shape of the groove 13 is provided with a cylindrical hole portion 13b that accommodates the bulging portion 41b on the back side of the flat portion 13a that supports the flat plate portion 41a of the ear portion 41. It is made into a shape. Due to the cross-sectional shape of the ear 41 and the groove 13, the socket cover 4 is restricted from being displaced in the vertical and horizontal directions perpendicular to the groove 13, so that vibration or the like is not generated, and the socket 13 slides smoothly using the groove 13 as a guide. It becomes possible to do.

  A positioning mechanism for positioning the socket cover 4 on the groove 13 at a steady position, that is, a position covering the lower part of the end of the fluorescent lamp 3 in the vicinity of the plug socket 2, is a flat plate portion 41 a of the ball plunger 7 and the ear portion 41. It is comprised by the hole 41c provided in. That is, the ball plunger 7 is screwed into the lamp body 1 so as to face the groove 13 from above and is fixed by the nut 8. The ball plunger 7 accommodates the ball 7c so as to be axially displaceable inside a cylindrical body 7b having a male thread 7a engraved on the outer peripheral surface, and makes the ball 7c face the outside from one end side of the cylindrical body 7b. The ball 7c has a structure in which the ball 7c is urged to the outside by a compression coil spring 7d, and the ball 7c of the ball plunger 7 slightly protrudes into the groove 13. On the other hand, the flat plate portion 41a of the ear portion 41 of the socket cover 4 is formed with a hole 41c into which the ball 7c is fitted. When the ball 7c is fitted into the hole 41c, the socket cover 4 vibrates. It does not move with a little external force, but slides only when a force is applied to intentionally shift the socket cover 4.

  In the embodiment of the present invention described above, as shown in FIG. 4, for example, a partial view of the ceiling portion of the railway vehicle viewed from below, for example, on both sides in the vehicle width direction of the ceiling portion, respectively along the longitudinal direction of the vehicle. It attaches continuously so that the edge part of the lamp main body 1 may mutually contact | adhere. Accordingly, the grooves 13 formed in each lamp body 1 are continuous with each other adjacent to each other. Then, as shown in FIG. 5 which is a longitudinal sectional view of the main part in the state of being mounted on the railway vehicle, the socket cover 4 described above is attached in such a manner that the end portions are joined together in a close contact state in the longitudinal direction. For the two plug sockets 2 arranged in a back-facing state across the joint surfaces in the lamp body 1, a common one having a length capable of covering the lower part of both is used. . In this configuration, when replacing the fluorescent lamp 3 of one of the two lamp bodies 1 adjacent to each other, the socket cover 4 may be moved to the other lamp body 1 side.

  According to the above embodiment of the present invention, the socket cover 4 that covers the lower part of the lamp socket 2 at both ends of the lamp body 1 moves along the groove 13 formed in the lamp body 1 itself to open and close. The conventional horizontal axis for opening and closing the socket cover and the resin end unit with its support mechanism and slide mechanism are no longer required, reducing the number of parts and the number of assembly steps, and at the same time the cross-sectional shape Since there is no other member made of resin or the like at both ends of the lamp body 1 made of an aluminum extrusion molding material having a high degree of freedom, it has a clean and good design.

  In addition, since the socket cover 4 is also made of an aluminum extrusion forming material, a sense of unity with the lamp body 1 is generated, and the above-described design is further improved, and at the same time as compared with a conventional resin socket cover. Its strength is improved.

  Since the slide cover 4 is slidably supported in the groove 13 formed over the entire length of the lamp body 1, the plurality of lamp bodies 1 are attached to the ceiling of the railway vehicle so that their ends are in contact with each other. In this state, as a result of the communication of the grooves 13 through the respective lamp bodies 1, a common slide cover 4 is provided so as to straddle the joint surfaces of the lamp bodies 1 adjacent to each other, and two socket covers facing away across the joint surface 4, and by providing such a socket cover 4, the continuity of the plurality of lamp bodies 1 appears remarkably.

It is a figure which abbreviate | omits and shows the figure which looked at embodiment of this invention from the side. It is an AA expanded sectional view of FIG. 4 is an enlarged cross-sectional view of the vicinity of an ear portion 41 of the socket cover 4. FIG. It is explanatory drawing of the example which attached embodiment of this invention to the ceiling part of the railway vehicle, and is the fragmentary figure which looked at the ceiling part from the bottom. It is a principal part longitudinal cross-sectional view of the state which attached the embodiment of this invention to the ceiling part of the railway vehicle. It is a figure which shows the example of the lamp | ramp of the conventional railway vehicle, (A) is a perspective view, (B) is an enlarged side view of the edge part. It is a figure which shows the other example of the lamp | ramp of the conventional railway vehicle, (A) is a perspective view, (B) is an enlarged side view of the edge part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lamp body 11 U-shaped cross section 12 Reflector 13 Groove 13a Flat part 13b Cylindrical hole part 13b
2 lamp socket 3 fluorescent lamp 4 socket cover 41 ear 41a flat plate 41b bulge 41c hole 5 ballast 6 lid 7 ball plunger 8 nut

Claims (2)

A lamp that can be attached to the ceiling of a passenger compartment of a railway vehicle,
A lamp body in which two lamp sockets for supporting and supplying power to both ends of the fluorescent lamp are mounted in the vicinity of both ends in the longitudinal direction is formed of an aluminum extrusion molding material. And the two groove | channels are formed so that it may pass through the both sides of a fluorescent lamp, The socket cover which consists of an aluminum extrusion molding material for covering each said lamp socket and a part of edge part of a fluorescent lamp from the downward direction in each groove | channel Is slidably fitted, and includes a positioning mechanism for locking the socket cover at a position below the lamp socket . The positioning mechanism includes a ball plunger attached to the lamp body side, and a socket. consists hole provided on the cover side, characterized in that the socket cover is locked by the ball of the ball plunger to the hole enters For railway vehicles to lamp. A plurality of the lamp bodies are adjacent to each other in the longitudinal direction, and the grooves are arranged so as to be continuous between the lamp bodies. The two lamp bodies adjacent to each other are provided on both sides of the boundary portion. The railcar lamp according to claim 1, wherein a region including the two lamp sockets is covered with a common socket cover.

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