JP3206627B2 - lighting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus having a socket cover which can be opened and closed and which is detachable.

[0002]

2. Description of the Related Art Conventionally, for example, a lighting apparatus described in Japanese Utility Model Laid-Open No. 5-69809 is known. In this luminaire, a pair of lamp sockets are provided opposite to each other at an end of the luminaire main body, and a base of a fluorescent lamp is mounted on these lamp sockets and held therebetween. Also,
A side cover is attached to an end of the instrument body, and a socket cover that covers the lamp socket so that the lamp socket can be opened and closed is attached to the side cover. A pair of guide ribs are formed on the side cover along the longitudinal direction of the instrument body, and a pair of slide grooves are formed on the socket cover so as to slidably fit into the guide ribs. The socket cover is supported so as to be able to advance and retreat along a longitudinal direction of the appliance body in a front direction toward the center of the appliance body and in a rear direction away from the center.

In each guide rib of the side cover, a locking recess and a sliding recess located on the rear side of the locking recess are formed along the longitudinal direction. The groove is provided with a locking projection that can be engaged with and disengaged from the locking concave portion and the sliding concave portion, so as to regulate the moving range of the socket cover.

In this lighting apparatus, the lamp socket is connected to the socket in a state in which each locking projection formed in each sliding groove of the socket cover is engaged with each locking recess formed in each guide rib of the side cover. The lamp socket is exposed when the socket cover is slid and the locking projections are engaged with the sliding recesses formed in the guide ribs by sliding the socket cover. Has become.

[0005]

However, in the above-mentioned conventional construction, the engaging portion between the guide rib and the sliding groove, or the engaging portion between the engaging projection and the engaging concave portion and the sliding concave portion is tight. When attaching the socket cover to the side cover, the work required when attaching the socket cover to the side cover or the work when sliding the socket cover is required, or the socket cover is slid while flexing the socket cover by pressing it with fingers. Work is required, and the workability is deteriorated. In addition, loosely engaging these engagement portions causes rattling of the socket cover, such as when the lighting fixture is subjected to vibration, such that the socket cover comes into contact with the side cover, producing so-called chattering noise or the like. Have the problem of being easy.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a lighting apparatus which can easily operate a socket cover for covering a lamp socket and can suppress rattling to suppress generation of abnormal noise. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION A lighting fixture according to the present invention comprises a fixture main body attached to a mounting portion, and a pair of lamp sockets opposed to each other and attached to the fixture main body to mount a straight tube type lamp. A cover pedestal provided on the appliance body, having opposing guide ridges formed along the longitudinal direction of the lamp, and slidably engaged with the guide ridge mounted on the cover pedestal A socket cover slidable along the longitudinal direction of the lamp from a closed position covering the lamp socket to an exposed position exposing the lamp socket, the socket cover being in contact with the socket cover, And a locking surface portion that regulates a movement range from the exposure position to the closing position. An engagement concave portion formed with a first inclined surface expanding toward the mounting surface, and a second inclined surface recessed in the locking surface portion and inclined toward the attached portion toward the closed position side. The socket cover is formed so as to protrude from the sliding portion and slidably contact the guide ridge, and the socket cover is positioned at the closed position. 1 and a locking projection which abuts on a second inclined surface of the locking recess when the socket cover is located at the closed position.

[0008]

In the lighting fixture of the present invention, the socket cover is exposed to expose the lamp socket from a closed position covering the lamp socket in a state where the sliding portion is slidably engaged with the guide ridge of the cover base. Up to the position, it is movably supported by the cover base. When the socket cover is moved to the closed position, the engaging projection comes into contact with the first inclined surface, the socket cover is urged toward the closed position, and the locking projection is moved to the second inclined plane. The socket cover is urged in the direction of the attached portion by contacting the surface. In this state, the socket cover is engaged and held at the closed position and is brought into close contact with the cover base.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a lighting apparatus according to an embodiment of the present invention.

In FIG. 2, reference numeral 10 denotes a lighting fixture (unit main body). The lighting fixture 10 includes, for example, a fixture main body 11 which is directly mounted on a ceiling surface S as a mounting portion of a vehicle such as a train or a ship. Have. And this instrument body 11
Is formed in a flat, substantially cylindrical shape having curved surfaces on both sides along the longitudinal direction, and a ballast (not shown) is fixed on the upper surface of the instrument body 11, and the ballast is mounted in the ceiling. In the embedding state, the upper surface of the appliance body 11 is in close contact with the ceiling surface S, and is fixed by a plurality of screws 12 or the like.

Further, lamp sockets 13 and 13 are attached to both ends of the appliance main body 11 so as to face each other, and cover bases (socket cover bases) 14 and 14 are mounted. Each cover base 14 has a socket cover that opens and closes the lamp socket 13 respectively.
15 is detachably attached.

A straight tube-type fluorescent lamp F as a lamp is detachably mounted between the lamp sockets 13, 13.

Hereinafter, along the longitudinal direction of the fluorescent lamp F, a direction toward the center of the fluorescent lamp F will be referred to as a front direction, and a direction away from the center of the fluorescent lamp F will be referred to as a rear direction. A direction toward the central axis of the fluorescent lamp F along the diameter direction (width direction) of the fluorescent lamp F is defined as an inward direction, and a direction away from the central axis of the fluorescent lamp F is defined as an outward direction.

As shown in FIGS. 1 to 8, each cover base 14 is made of, for example, a synthetic resin, and is formed of a substantially flat plate-like substrate portion 16 and a pair of outer portions of the substrate portion 16. A pair of side plate portions 17, 17 extending in a substantially U-shaped cross section form a substantially C-shaped cross section connectable to the instrument body 11. Also, at the front end of each cover base 14,
A fitting portion 18 having a small thickness dimension to be fitted to the end of the device body 11
Are formed, and the rear end of each cover base 14 is covered with an end plate 19 that smoothly connects to the base plate 16 and the side plates 17, 17. Further, a plurality of ridges are provided on the inner surface sides of the substrate portion 16 and the side plate portions 17, 17, respectively.
16a and 17a are formed, and a mounting hole 16b through which a screw (not shown) for fixing the cover base 14 to the appliance main body 11 is formed in the protruding ridge 16a formed on the substrate portion 16.

On the lower surface side of each cover base 14, a side plate portion is provided.
A substantially rectangular opening 20 through which the lamp socket 13 is inserted is formed between the openings 17, 17, and the opening 20 is interposed between the ends of the side plates 17, 17 to smoothly move downward. Information section
21 and 21 are protruding. And these guides 21, 21
Along the lower side (tip portion), guide ribs 22 are provided as guide ridges facing inward with the front-rear direction as a longitudinal direction.
Opposite guide grooves forming the sliding surface
24, 24. Further, at the rear end of each guide groove 24, 24, a stop surface 26,
26 protrudes upward. In addition, each guide rib 22, 22
Guide surfaces 28, 28 which are located in front of the stop surfaces 26, 26 and which are inclined downwardly in a flared shape are formed at the lower corners inside.

As shown in FIG. 4, for example, the longitudinal dimension L ₁ of the guide surface 28 in the front-rear direction is set smaller than the longitudinal dimension L ₂ of the guide rib 22.

The guide ribs 22, 22 are provided with the guide surfaces.
Engagement concave portions 29, 29 having a substantially trapezoidal cross section are formed in front of 28, 28. And these engagement recesses
On the rear side of 29, 29, there are formed first inclined surfaces 29a, 29a which are inclined so as to expand toward the front outside.

A substantially flat stop plate 30 projects downward from the front side of the end plate portion 19 of each cover base 14, and the rear surface of the stop plate 30 serves as a locking surface portion 30a. ing. A locking concave portion 30b having a substantially trapezoidal cross section is formed along the edge of the end plate portion 19 in the locking surface portion 30a. Then, on the lower side of the locking recess 30b,
A second inclined surface 30c inclined toward the front upper side is formed.

FIGS. 1 to 5, 9 and 1
As shown in FIG. 0, the socket cover 15 is integrally formed of, for example, a synthetic resin, and has a substantially U-shaped cross section to cover a lower portion of the lamp socket 13, and a rear side of the cover main portion 31. A substantially flat rear wall portion 32 covering the portion is smoothly connected. The front side of the cover body 31 is opened to form a lamp insertion portion 33 through which the fluorescent lamp F is inserted.

Further, upper wall portions 35, 35 project upward from the upper end edges on both sides of the cover main body portion 31 of the socket cover 15 along the inner side surfaces, respectively.
Sliding claws 36, 36 project upward from the front side of the upper wall 35, respectively.
Sliding grooves 38 as a sliding portion are provided between the upper end surface of the cover main body 31 and the sliding groove. The upper ends (tips) of the sliding claws 36, 36 have a curved surface, and a sliding contact surface 36a inclined outward and downward from the upper end is formed outside the sliding claws 36, 36. , 36a are formed.

The sliding contact surfaces 36a of these sliding claws 36, 36
, 36a are set to be equal to or larger than the distance between the guide surfaces 28, 28 of the cover base 14 in the natural state, and the cover body 31 of the socket cover 15 is By elastically deforming, that is, flexing, the sliding contact surfaces 36a, 36 of these sliding claws 36, 36,
The distance between a can be reduced.

The vertical dimensions of the sliding grooves 38, 38 are as follows:
The thickness is slightly larger than the thickness of the guide ribs 22,22.

Further, as shown in FIG.
Longitudinal dimension L ₃ of 36, 36 and the sliding groove 38 and 38, the guide surface 2
It is slightly smaller than the longitudinal dimension L ₁ of 8, 28.

Engagement protrusions 39, 39 are formed in a circular arc shape from the center in the front-rear direction of the slide grooves 38, 38, respectively.

Further, the rear wall portion 32 of the socket cover 15
Are projecting upward to a position substantially equal to the height of the sliding claws 36, 36, and on the front surface near the upper end of the rear wall portion 32, a locking projection 41 having a longitudinal direction in both sides is provided. Is protruding. Under the rear locking projection 41, an inclined surface portion 41a is formed to face upward and forward.
It has a substantially trapezoidal cross section similar to b.

Next, the operation of this embodiment will be described.

First, in the normal use state, each of the socket covers 15 is configured such that the guide ribs 22, 22 and the sliding grooves 38, 38 are slidably fitted to each other so that the socket covers 15 can move forward and backward in each cover base 14. The lamp socket 13 is supported and slidable from a closed position covering the lamp socket 13 to an exposure position (retreat position) for exposing the lamp socket 13. When the sliding grooves 38, 38 are fitted to the guide ribs 22, 22, the socket cover
Due to the urging force of the 15 cover body 31 trying to expand,
The engaging projections 39, 39 protruding from the sliding grooves 38, 38 are guide ribs.
They are pressed against 22 and 22 and come into sliding contact.

FIGS. 2 to 5 and FIG.
When each socket cover 15 is slid to the forward limit as shown in FIG.
9 and 39 respectively engage with the engaging recesses 29 and 29 of the cover base 14, and the rear wall 32 of the socket cover 15
The stop cover 30 abuts on the stop plate 30 and further engages with the lock recessed portion 30b formed on the stop plate 30 with the lock protrusion 41 protruding from the rear wall portion 32, so that the socket cover 15 is engaged with the closed position. Will be retained.
Then, in this state, the outer surface of the cover base 14 and the outer surface of the socket cover 15 are smoothly continuous.

When the socket cover 15 is slid to the closed position, as shown in FIG.
Due to the urging force (elastic force) in the direction in which the cover main body portion 31 of the socket cover 15 tends to expand (the direction of arrow C in the drawing), each of the engaging projections 39, 39 is formed by the first inclination of the engaging concave portion 29, 29. Surface 29a,
29a, and the socket cover 15 is pushed forward (arrow A in the figure).
Direction). Therefore, FIG.
As shown in (b), each of the engagement projections 39, 39 is securely engaged with the engagement recesses 29, 29 with a small operation force.

Further, as shown in FIG. 13 (a), the socket cover 15 is brought forward (in the direction of the arrow A in the drawing) by the engagement between the engaging projections 39, 39 and the first inclined surfaces 29a, 29a. As shown in FIG. 13B, the inclined surface 41a of the locking projection 41 of the socket cover 15 is moved by the urging force to move the stop plate 30.
Is pressed against the second inclined surface 30c, and the socket cover 15 is urged upward (in the direction of arrow B in the figure).
Therefore, the socket cover 15 is pressed against each cover base 14 and is supported without rattling.

Then, in this state, each socket cover 15
Covers the lamp socket 13 and the base of the end portion of the fluorescent lamp F, thereby preventing the fluorescent lamp F from falling off.
The appearance of the lighting fixture 10 can be improved.

When each socket cover 15 is pushed rearward, each of the engaging projections 39, 39 comes into sliding contact with the first inclined surfaces 29a, 29a and comes off from the engaging recesses 29, 29. Then, as shown in two-dot chain lines in FIGS. 3 and 4 and FIG. 11B, when each socket cover 15 is slid to the retreat limit, the rear ends of the sliding claws 36 of the socket cover 15 are moved. The socket base 15 is stopped by abutment against the stop surface 26 of the cover base 14 and is prevented from moving in the rearward direction of each socket cover 15. In this state, the lamp socket 13 and the base at the end of the fluorescent lamp F are exposed, so that the fluorescent lamp F can be replaced. The movement distance of each socket cover 15, the longitudinal dimension L ₂ of the guide rib 22, which is the difference between the longitudinal dimension L ₃ of each Suridotsume 36.

Further, as shown in FIG. 11 (c), both side surfaces of the cover body 31 of the socket cover 15 at the exposed position are depressed and bent inward by fingers, so that each sliding claw 36 of the socket cover 15 is bent. , 36 over the guide ribs 22, 22, and then the sliding contact surfaces 36a, 36a of the respective sliding claws 36, 36 are brought into contact with the guide surfaces 28, 28.
The sliding grooves 38, 38 are disengaged from the guide ribs 22, 22, and the socket cover 15 can be removed.

The socket cover shown in FIG.
From the state where 15 is removed, the sliding contact surface 36a of each sliding claw 36, 36
, 36a are aligned with the guide surfaces 28, 28 of the guide ribs 22, 22, and then pushed up, these sliding contact surfaces 36a, 36a and the guide surface
28, 28 are in sliding contact with the cover
31 is elastically bent inward, and each sliding claw 36, 36 is a guide rib
The sliding groove 38, 38 goes over the guide rib 22, 22,
And the socket cover 15 is temporarily attached.
Then, from this state, by pushing the socket cover 15 and sliding it forward, the socket cover 15 is moved to the closed position, and the rear wall 32 of the socket cover 15 is moved to the closed position.
Abuts against the stop plate 30 of the cover base 14 and stops, and the mounting work of the socket cover 15 can be completed.

As described above, according to the present embodiment, in the socket cover mounting structure of the fluorescent lamp unit which is the lighting fixture 10 for lighting the straight tube type fluorescent lamp F, the socket cover
15 is a state in which the sliding groove 38 is slidably fitted to the guide rib 22 of the cover base 14, and is slidable in the front-rear direction from a closed position covering the lamp socket 13 to an exposed position exposing the lamp socket 13. Because the lamp socket 13 and the fluorescent lamp F are supported by each socket cover 15,
Can prevent the fluorescent lamp F from dropping off, improve the appearance of the lighting fixture 10, and slide each socket cover 15 to the rear to replace the fluorescent lamp F. Can be easily performed.

When the socket cover 15 is pushed forward and moved to the closing position, the engaging projections 39 are pressed against the first inclined surfaces 29a, 29a, respectively, so that the socket cover 15 is moved forward. At the same time, the inclined surface portion 41a of the locking projection 41 comes into contact with the second inclined surface 30c, and the socket cover 15 is urged upward. Therefore, by pushing the socket cover 15 forward with a certain force, the socket cover 15 can be securely engaged and held in the closed position in a stable state, and the socket cover 15 is
Can be supported without rattling. For this reason, this lighting fixture 10 is used for vehicles such as trains,
Even when mounted on a place with vibration such as a ship, generation of abnormal noise such as so-called chatter noise can be suppressed.

When the socket cover 15 is moved to the exposed position, the socket cover 15 may be pushed lightly and with a constant force toward the rear side.
It is not necessary to bend the cover main body portion 31 with a finger or the like, so that the operability when opening the socket cover 15 can be improved, and the replacement of the fluorescent lamp F can be performed promptly.

Since the structure is not complicated, the manufacturing is easy and the number of parts is not increased, and the manufacturing cost can be reduced.

Further, the socket cover 15 is provided with sliding claws 36, 36 on vertical stop surfaces 26, 26 formed on the cover base 14.
To restrict the rearward movement range by abutting on the socket cover, for example, as compared with a structure in which a protrusion protruding from the sliding grooves 38, 38 is engaged with a recess formed in the guide rib 22. 15 can be securely locked and stopped, and even when each socket cover 15 is slid to the rear side, it is suppressed that each socket cover 15 comes off unexpectedly,
Workability can be improved.

The longitudinal dimension L ₃ of the sliding claws 36, 36 and the sliding grooves 38, 38 of the socket cover 15 is
And the guide ribs 22, 22 are formed smaller than the longitudinal dimension L _{2 in} the front-rear direction, so that the socket cover 15 is moved rearward while the entire lengths of the sliding grooves 38, 38 are fitted to the guide ribs 22, 22. Can be moved. Also, cover stand
Since the guide ribs 22 and 14 have guide surfaces 28 and 28 slidingly contacting the sliding surfaces 36a and 36a of the sliding claws 36 and 36, the sliding claws 36 and the guide surface 28 are positioned. By aligning and pushing up the socket cover 15, the sliding grooves 38, 38
And the guide ribs 22 and 22 can be engaged with each other. Therefore, even when the socket cover 15 is attached or detached, there is no need to move the socket cover 15 accurately after positioning the socket cover 15 accurately. For example, the lighting device 10 installed on the ceiling surface S of a train car, etc. The socket cover 15 can be easily attached and detached.

The cover stand 14 and the socket cover 15
1 is not limited to the shape shown in FIG. 1 and the like. For example, as shown in FIG. 14, the guide ribs 22 are formed over the entire length of the cover base 14, and the sliding grooves 38 are formed over the entire length of the socket cover 15. Alternatively, the socket cover 15 can be fitted and mounted from the outer end of the cover base 14. Thus, by simplifying the structure of the cover base 14, the socket cover 15, and the like, the manufacturing cost of the lighting fixture 10 can be reduced.

Further, as shown in FIG.
Second engagement recesses 51, 51 are formed in the second and the second at positions behind the engagement recesses 29, 29, respectively.
A third inclined surface that is widened toward the rear side on the front side of the vehicle
51a, 51a can also be formed. Thus, the second
Are formed, and the first inclined surfaces 29a, 29a are formed.
When the socket cover 15 is slid rearward to expose the lamp socket 13, the engaging projections 39, 39 of the socket cover 15 are formed by forming the third inclined surfaces 51 a, 51 a facing the opposite side. The socket cover 15 can be stably supported at a predetermined position by engaging with the second engagement concave portions 51, 51.

[0043]

According to the lighting fixture of the present invention, the socket cover is moved from the closed position covering the lamp socket with the sliding portion slidably engaged with the guide ridge of the cover base. Can be movably supported on the cover base up to the exposure position where the is exposed. When the socket cover is moved to the closed position, the engaging projection comes into contact with the first inclined surface, the socket cover is urged toward the closed position, and the locking projection is moved to the second inclined plane. The socket cover is urged in the direction of the attached portion by contacting the surface. In this state, the socket cover can be engaged and held at the closed position, and can be closely contacted with the cover base and supported without rattling.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disassembled state of a cover base and a socket cover showing one embodiment of a lighting fixture of the present invention.

FIG. 2 is a perspective view of the lighting device.

FIG. 3 is a cross-sectional view of a part of the lighting device.

FIG. 4 is a cross-sectional view of a part of the lighting device.

FIG. 5 is an end view showing a state where the cover base and the socket cover are combined with each other.

FIG. 6 is a bottom view of the same cover base.

FIG. 7 is an end view of the cover base.

FIG. 8 is a cross-sectional view of a part of the cover base.

FIG. 9 is a side view of the socket cover.

FIG. 10 is an end view of the socket cover.

FIG. 11 is a work process diagram showing a detachment operation of the socket cover.

FIG. 12 is a work process diagram showing a detachment operation of the socket cover.

FIG. 13 is a work process diagram showing a detachment operation of the socket cover.

FIG. 14 is an exploded perspective view showing another embodiment of the cover base and the socket cover.

FIG. 15 is an exploded perspective view showing still another embodiment of the cover base and the socket cover.

[Explanation of symbols]

 10 Lighting equipment 11 Fixture body 13 Lamp socket 14 Cover base 15 Socket cover 22 Guide rib as guide ridge 29 Engagement recess 29a First inclined surface 30a Engagement surface 30b Engagement concave 30c Second inclined surface 38 Sliding part Sliding groove 39 Engagement projection 41 Engagement projection F Fluorescent lamp as lamp S Ceiling surface as mounting part

Claims (1)

(57) [Claims] 1. An instrument body attached to a portion to be attached,
A pair of lamp sockets, which are opposed to each other and are attached to the main body of the apparatus, to which a straight-tube type lamp is mounted, and opposing guide ridges formed along the longitudinal direction of the lamp are provided on the main body of the apparatus. A lamp mounted on the cover base and having a sliding portion slidably engaged with the guide ridge and covering the lamp socket to an exposed position exposing the lamp socket. A socket cover that is slidable along the longitudinal direction of the lighting device, and a locking surface portion that contacts the socket cover and regulates a moving range of the socket cover from the exposed position to the closed position. The cover base is recessed in the guide ridge and has an engagement recess formed with a first inclined surface expanding toward the closed position side, and the cover recess is recessed in the locking surface portion. A locking recess formed with a second inclined surface inclined toward the attached portion toward the closed position side, wherein the socket cover is protruded from the sliding portion and is provided on the guide protrusion. An engagement protrusion that slides and contacts the first inclined surface of the engagement recess when the socket cover is located at the closed position; and an engagement protrusion that contacts the first recessed surface when the socket cover is located at the closed position. A lighting fixture comprising: a locking projection that abuts on the second inclined surface.