JP5022148B2 - lighting equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture in which, when a socket cover is removed to perform the work, there is no need of placing the socket cover at the other place once or performing the work while keeping the socket cover in worker's hands, and, moreover, the socket cover is never damaged by drop. <P>SOLUTION: The lighting fixture comprises: a fixture body 1; a socket 31 on which a lamp 2 provided at the fixture body 1 is mounted; and the socket cover 4 fixed to the fixture body 1 so as to cover at least the socket 31. A fixing means 5 is provided at the socket cover 4 and the fixture body 1 to fix the socket cover 4 to the fixture body 1, and a temporary retaining means 6 is provided to hang the socket cover 4 from the fixture body 1 and retain it temporarily with the socket cover 4 moved downward by releasing the state fixed by the fixing means 5. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a lighting fixture including a socket cover that covers a socket on which a lamp is mounted.

  Conventionally, as shown in FIG. 13, as a lighting fixture having a socket cover 4 ′ that covers a socket 31 to which the lamp 2 is mounted, the engagement piece of the socket cover 4 ′ is engaged with the engaged portion of the fixture body. In some cases, the socket cover 4 'is attached to the instrument body (see, for example, Patent Document 1).

In this conventional example, as shown in FIG. 14, an engaging piece 41 ′ having a hooking claw is provided on the upper end edge of the socket cover 4 ′ that opens upward and one side, and the reflecting plate of the instrument body. 13 is inserted into the hole 13a from below, and the hooking claw is hooked on the edge of the hole 13a to engage the socket cover 4 'with the reflection of the instrument body. It is fixed to the plate 13.
Japanese Patent Laid-Open No. 11-353927

  By the way, in the lighting fixture shown in the above-described conventional example, when the socket cover 4 ′ is fixed to the fixture body (in this example, the reflecting plate 13) and the lamp 2 is replaced or maintained, It is necessary to remove the cover 4 'from the instrument body and place it in another place once, or the operator must work while holding the socket cover 4' in his / her hand. When working with a hand held in hand, the degree of freedom of the hand is reduced, making it difficult to work. Also, when placing it on or holding it in the hand, it is a socket. The cover 4 ′ might fall and be damaged.

  The present invention has been invented in view of the above-mentioned conventional problems, and the object of the present invention is to temporarily place the socket cover in another place when an operator removes the socket cover, It is an object of the present invention to provide a lighting fixture that does not require work while holding the socket cover and that does not drop and damage the socket cover.

In order to solve the above-mentioned problem, according to the first aspect, the instrument main body 1 having the casing 10 whose bottom surface is opened, the socket 31 provided on the instrument main body 1 to which the lamp 2 is mounted, and the instrument main body In a lighting fixture comprising a socket cover 4 that is fixed and covers at least the socket 31, a fixing means 5 for fixing the socket cover 4 to the fixture body 1 is provided on the socket cover 4 and the fixture body 1 and fixed. The socket cover 4 is suspended from the instrument body 1 and temporarily held in a state in which the socket cover 4 is moved downward by removing the fixed state by the means 5. As the temporary holding means 6, a shape variable member 61 made of a string or a wire is used. The socket cover 4 and the instrument main body 1 are connected, and the string or wire has a main body part e and a huge part d which is enormous compared to the main body part. An opening 62 is provided on the inner surface 12 of the opening 10. The opening 62 has a narrower gap b extending downward from the lower side of the opening a than the main body e, and is compared with the enormous part d from the lower end of the gap b. It is characterized by comprising a locking hole c for locking the small enormous portion d .

With such a configuration , the temporary holding means 6 can be provided with a simple configuration of the shape variable member 61, and the socket cover 4 can be suspended and temporarily held from the instrument body 1 by the temporary holding means 6. Thus, the work is simplified and the work is facilitated, and the socket cover 4 is not likely to be dropped and damaged.

According to a second aspect of the present invention, in the first aspect of the invention, the instrument body 1 includes a casing 10 having an open bottom surface and a substantially rectangular shape in plan view, and sockets at both ends in the longitudinal direction of the casing 10. The socket cover 4 can be rotated in the longitudinal direction of the casing 10 while the socket cover 4 is suspended from the instrument body 1 by the temporary holding means 6.

  With this configuration, the socket cover 4 can be rotated in the longitudinal direction with the socket cover 4 temporarily held in the casing 10 to open the lower portion of the socket 31, and the lamp 2 can be opened in the socket 31. It can be easily attached to the printer and other work such as maintenance.

The invention according to claim 3 is the invention according to claim 1, wherein the instrument body 1 includes a casing 10 having an open bottom surface and having a substantially rectangular shape in plan view, and sockets at both ends in the longitudinal direction of the casing 10. The socket cover 4 can be rotated in the short direction of the casing 10 while the socket cover 4 is suspended from the instrument body 1 by the temporary holding means 6.

  With such a configuration, with the socket cover 4 temporarily held in the casing 10, the socket cover 4 can be rotated in the short direction to open the lower portion of the socket 31, and the lamp 2 can be connected to the socket. This makes it easy to perform the work such as the attachment to 31 and other maintenance.

  In the present invention, even when the lamp cover is removed from the fixture body by the fixing means to the fixture body and work such as lamp replacement or maintenance is performed, the socket cover is temporarily suspended from the fixture body by the temporary holding means. It is possible to remove the socket cover from the instrument body and place it in another place, or the operator does not have to work while holding the socket cover in hand. In addition, the degree of freedom of the hand is not reduced and the operation is easy, and there is no possibility that the socket cover is dropped and damaged.

  The present invention will be described below with reference to the accompanying drawings. First, a basic configuration of a lighting fixture will be described with reference to FIG.

  The lighting fixture is arranged on the ceiling or the like, and turns on a straight tube type discharge lamp (fluorescent lamp) as the lamp 2, and is a magnetic circuit type ballast (not shown) for turning on the fluorescent lamp. And an instrument body 1 housing the ballast, and a reflector 13 attached to the instrument body 1 so as to close the instrument body 1 and reflecting the light of the discharge lamp. The instrument body 1 and the reflecting plate 13 are each made of, for example, a coated steel plate.

  The appliance main body 1 includes a casing 10 that is formed in a substantially rectangular parallelepiped shape that is long on the left and right and whose lower surface is opened, and a pair of lamp holding portions 3 that are provided on the lower sides of both ends in the longitudinal direction of the casing 10. The cross-sectional shape in a cross section orthogonal to the longitudinal direction of the casing 10 is a U-shape. The lamp holder 3 is provided with a fluorescent lamp socket 31 to which a fluorescent lamp base is attached. Each lamp holder 3 is provided with a socket cover 4 that covers the lamp holder 3 and is fixed to the appliance body 1. The instrument main body 1 is fixed to the construction surface by, for example, a screw (not shown) that passes through the casing 10 and is screwed onto the construction surface.

  The reflector 13 is a long member having a concave shape in cross section, and is disposed on the upper side of the lamp 2 so as to cover the upper surface side of the lamp 2, and both ends in the longitudinal direction of the casing 10 of the instrument body 1. It is fixed to the inner side surface 11 on the short side (that is, the inner side surface located at both ends in the longitudinal direction of the casing 10).

  The socket cover 4 is composed mainly of a cover portion that covers the socket 31, and in the embodiment shown in FIG. 1, a lower cover portion 41 that is disposed below the socket 31 and covers the lower surface side of the socket 31, The main body is constituted by a cover portion including a side cover portion 42 that covers the side of the socket 31, that is, the side of the center side of the instrument body 1. The lower cover portion 41 is made of a plate-like member having a substantially rectangular shape in plan view, and is located between the inner side surfaces 12 on the long side of the casing 10 at the lower end portion of the portion provided with the sockets 31 at both ends in the longitudinal direction of the casing 10. It is arranged over. The side cover 42 is a plate-like member that rises upward from the central side of the instrument body 1 of the lower cover 41, and the upper end reaches the vicinity of the reflector 13 and the portion where the lamp 2 is located is A notch 42a that avoids the lamp 2 is formed.

  Next, the fixing means 5 and the temporary holding means 6 will be described. The fixing means 5 is provided on the socket cover 4 and the instrument body 1 in order to fix the socket cover 4 to the instrument body 1. The temporary holding means 6 is fixed by the fixing means 5 and the socket cover 4 is removed. The socket cover 4 is provided so as to be suspended from the instrument main body 1 while being moved a certain distance downward, and will be described below in order based on each embodiment.

  First, a first embodiment of the present invention will be described with reference to FIGS.

  A plate-like fixing piece 43 is provided which stands upward from both sides of the casing cover 10 in the short side direction of the casing cover 41 and faces the inner side surface 12 on the long side of the casing 10. The fixing piece 43 faces the inner side surface 12 on the long side of the casing 10 in a state where the outer side surface is fixed to the casing 10 of the instrument body 1 by the fixing means 5. Then, as the fixing means 5, a protruding piece 51 a that protrudes obliquely downward outward is provided at the upper end of the fixing piece 43 of the socket cover 4, and the protruding piece 51 a is fitted on the inner side surface 12 on the long side of the casing 10. Thus, an opening 52a for locking is provided.

  The temporary holding means 6 includes a shape variable member 61 such as a string or a wire, and one end of the shape variable member 61 is connected and fixed to the fixing piece 43 of the socket cover 4 by bonding or other means. Then, an opening 62 different from the opening 52 a serving as the fixing means 5 is formed on the inner side surface 12 on the long side of the casing 10. The other end of the shape-variable member 61 is a large portion d (knot in this embodiment) having a diameter larger than the width of the main body portion e, and the opening 62 has an insertion port a through which the large portion d can be inserted. The narrow gap portion b which is in communication with the insertion port a and is smaller than the diameter of the enormous portion d and the main body portion e, and the diameter of the main body portion e which is in communication with the narrow gap portion b and smaller than the enormous portion d. And a larger-diameter locking hole c.

  The temporary holding means 6 inserts the enormous portion d at the other end of the shape-variable member 61 into the insertion port a of the opening 62 of the casing 10, deforms the main body portion e to narrow the width, and narrows the gap portion b. The main body e reaches the locking hole c and the enormous part d is prevented from coming off and is locked.

  The temporary holding means 6 composed of the shape-variable member 61 is bent when the socket cover 4 is fixed to the casing 10 by the fixing means 5, and the shape-variable member 61 is bent. When moving to the position, the variable shape member 61 is stretched and the socket cover 4 is suspended from the instrument body 1 and temporarily held.

  According to the configuration as described above, even when the fixing of the socket cover 4 to the instrument main body 1 by the fixing means 5 is removed and the lamp 2 is replaced or maintenance is performed, the temporary holding means 6 is used to connect the socket main body 1 to the socket. The cover 4 can be suspended and temporarily held, and there is no need to remove the socket cover 4 from the instrument body 1 and temporarily place it in another place or to perform work while the operator holds the socket cover 4 in his / her hand. The operation is not necessary because it is not necessary to place it once, it is easy to work without reducing the degree of freedom of the hand, and there is no risk of the socket cover 4 being dropped and damaged. Is.

  Further, the temporary holding means 6 can be provided with a simple configuration of the shape variable member 61.

  Further, with the socket cover 4 temporarily held in the casing 10, the socket cover 4 can be rotated in either the longitudinal direction or the short direction, and the socket cover 4 can be moved in either the longitudinal direction or the short direction. Even when the lamp cannot be rotated, the lower part of the socket 31 can be opened, and the lamp 2 can be attached to the socket 31 and other work such as maintenance can be easily performed.

  Next, a second embodiment, a third embodiment, and a sixth embodiment will be described. In the second embodiment, the third embodiment, and the sixth embodiment, the socket cover 4 is rotated in the longitudinal direction of the casing 10 while the socket cover 4 is suspended from the instrument body 1 by the temporary holding means 6. It is possible to move.

  First, a second embodiment of the present invention will be described with reference to FIGS. In addition, in 2nd embodiment, about the structure similar to 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted and it mainly demonstrates a different part.

In the second embodiment, as the fixing means 5 on the socket cover 4 side, the lower bottom portion SB ₁ , the side vertical portion SB ₂ protruding upward from both ends of the lower bottom portion SB ₁ , and the outside from the upper end of the side vertical portion SB ₂ A wire spring SB having a substantially U-shape which is formed of an engaging pivot SB ₃ projecting in the upward direction and opened upward, and a lower bottom SB ₁ is formed in a through hole 43 a formed in both fixing pieces 43 of the socket cover 4. respectively are inserted, along with positioning the Gawatate section SB ₂ on the outside of the fixing piece 43, which extend the distal portion of the side vertical section SB ₂ upward. The wire spring SB is fixed to the socket cover 4.

Further, as the fixing means 5 of the casing 10 side is provided with a long hole 52b of the upper and lower engaging and pivoting unit SB ₃ is inserted in the wire spring SB on the inner surface 12 of the longer side of the casing 10 to the longitudinal direction.

Fixed to the casing 10 of the socket cover 4, the engaging and pivoting unit SB ₃ wire springs SB of the socket cover 4 is inserted from the inside into the elongated hole 52b of the casing 10 is positioned on the upper end portion of the long hole 52b, both sides of the is performed by pressing by the elastic force to be to spread the side vertical section SB ₂ on both sides of the side longitudinal section SB ₂ on the inner surface 12 of the longer side of the casing 10, respectively (see Figure 4 (a)).

Then, disconnect the fixed state, shortening the distance between the side of the side vertical section SB ₂ on both sides of the side longitudinal section SB ₂ by applying a force inward from outside of the casing 10 of the side vertical section SB ₂ length This is done by releasing the pressure contact with the inner side surface 12 on the side. When the socket cover 4 is lowered and the engagement pivot SB ₃ of the wire spring SB is positioned at the lower end of the long hole 52b, the engagement pivot SB ₃ is supported on the lower end of the long hole 52b, and the socket The cover 4 is suspended from the instrument body 1 and temporarily held (see FIG. 4B). That is, the engagement pivotal support portion SB ₃ of the wire spring SB of the socket cover 4 and the long hole 52 b of the casing 10 constitute the temporary holding means 6.

In the temporarily held state as described above, as shown in FIG. 4C, the socket cover 4 is centered on the engaging pivot SB ₃ inserted through the lower end of the long hole 52 b of the casing 10. The casing 10 can be rotated in the longitudinal direction.

  By doing so, the socket cover 4 can be rotated in the longitudinal direction while the socket cover 4 is temporarily held in the casing 10, the lower part of the socket 31 can be opened, and the lamp 2 can be connected to the socket. This makes it easy to perform the work such as the attachment to 31 and other maintenance.

  Next, a third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  In the third embodiment, as the fixing means 5, the side surface of the intermediate portion in the vertical direction of the fixing piece 43 of the socket cover 4 is bent outward to project the bent portion 51 c and the inner side surface 12 on the long side of the casing 10. An opening 52c into which the bent portion 51c is inserted is provided.

  The temporary holding means 6 is provided on the inner side surface 12 on the long side of the casing 10 and provided with a locking portion 61 that protrudes obliquely downward outward from a part of the upper end portion of the fixing piece 43 of the socket cover 4. The opening 52c is also used as the locked portion 62.

  In the state where the socket cover 4 is fixed to the casing 10 by the fixing means 5, the temporary holding means 6 including the locking portion 61 and the opening 52 c serving as the locked portion 62 has the bent portion 51 c of the socket cover 4. The locking part 61 is positioned and fixed above the opening 52c as the locked part 62 (see FIG. 6A), but is fixed by the fixing means 5. When the socket cover 4 is moved downward after being fixed, the locking portion 61 of the socket cover 4 located above the bent portion 51c is locked in the opening 52c as the locked portion 62 formed in the casing 10. Then, the socket cover 4 is suspended from the instrument body 1 and temporarily held (see FIG. 6B).

  In the temporarily held state as described above, the socket cover 4 is rotatable in the longitudinal direction of the casing 10 around the locking portion 61 of the socket cover 4 locked to the opening 52c of the casing 10. .

  By doing so, the socket cover 4 can be rotated in the longitudinal direction while the socket cover 4 is temporarily held in the casing 10, the lower part of the socket 31 can be opened, and the lamp 2 can be connected to the socket. This makes it easy to perform the work such as the attachment to 31 and other maintenance.

  Next, the fourth embodiment and the fifth embodiment will be described in order. In the fourth and fifth embodiments, the socket cover 4 can be rotated in the short direction of the casing 10 in a state where the socket cover 4 is suspended from the instrument body 1 by the temporary holding means 6. It is.

  First, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, in 4th embodiment, the same code | symbol is attached | subjected about the structure similar to 1st embodiment, description is abbreviate | omitted, and a different part is mainly demonstrated.

  In the fourth embodiment, as the fixing means 5, the wire spring SB is bent so as to form a massive portion 51 d that swells to the left and right, and is fixed to the outer side surfaces of both fixing pieces 43 of the socket cover 4. A support portion 52d for supporting the enormous portion 51d of the socket cover 4 is provided on the inner side surface 12 on both long sides.

  The temporary holding means 6 bends the upper ends of the wire springs SB provided on both the fixing pieces 43 of the socket cover 4 in a substantially hemiform shape so that the top thereof is a locking portion 61, and both the lengths of the casing 10. A protruding portion protruding from the inner side surface 12 on the side is formed as the locked portion 62.

  The temporary holding means 6 composed of a locking part 61 bent in a substantially U-shape at the upper end of the wire spring SB and a locked part 62 composed of a protruding part is used to fix the socket cover 4 to the casing 10 by the fixing means 5. In the fixed state, the locking portion 61 at the upper end of the wire spring SB is located above the protruding portion as the locked portion 62 formed in the casing 10 and is not locked (see FIG. 8A). When the fixing by the fixing means 5 is removed and the socket cover 4 moves downward, the locking portion 61 is hooked and locked by the locked portion 62, and the socket cover 4 is suspended from the instrument body 1. Temporarily held (see FIG. 8B).

  In the temporarily held state as described above, the socket cover 4 extends in the longitudinal direction of the casing 10 around the locking portion 61 of the socket cover 4 locked to the locked portion 62 of the casing 10. As shown in FIG. 9, the temporary holding means 6 is released from the temporary holding (the locking by the right locking portion 61 and the locked portion 62 in FIG. 9). Thus, as shown in FIG. 9B, the socket cover 4 can be rotated in the short direction of the casing 10.

  In this way, the socket cover 4 can be rotated in either the longitudinal direction or the short direction in a state where the socket cover 4 is temporarily held in the casing 10. Even when the socket cover 4 cannot be rotated, the lower part of the socket 31 can be opened, and the lamp 2 can be attached to the socket 31 and other maintenance work can be easily performed.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. Note that in the fifth embodiment, the same components as those in the fourth embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  In the fifth embodiment, in the fourth embodiment, only the one side is provided with the locked portion 62 formed of a protruding portion on the inner side surface 12 on both long sides of the casing 10 (only the left side in FIG. 10). It is provided.

  In this manner, in the fourth embodiment, it is necessary to release the locking by the right locking portion 61 and the locked portion 62 in the temporarily held state, but this is unnecessary. It is. Other effects are the same as in the fourth embodiment.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS. Note that in the sixth embodiment, configurations that are the same as in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  In the sixth embodiment, as the fixing means 5, the side surface of the intermediate portion in the vertical direction of the fixing piece 43 of the socket cover 4 is bent outward to project the bent portion 51 f and the inner side surface 12 on the long side of the casing 10. An opening 52f into which the bent portion 51f is inserted is provided.

  The temporary holding means 6 fixes the wire spring SB to the side surface of the fixing piece 43 of the socket cover 4 so that both ends are free ends, and both ends are bent in a substantially U-shape. In addition to the locking portion 61, a claw-like protruding portion that protrudes from the inner side surface 12 on the long side of the casing 10 is formed as the locked portion 62.

  The temporary holding means 6 composed of a locking portion 61 bent at the tip of the wire spring SB and a protruding portion as the locked portion 62 is inserted into the opening 52f of the casing 10 by inserting the bent portion 51f of the socket cover 4 into the socket cover. In the state where 4 is fixed to the casing 10, the locking portion 61 at the upper end of the wire spring SB is located above the locked portion 62 protruding from the casing 10 and is not locked (FIG. 12A). When the socket cover 4 is moved downward by removing the fixing by the fixing means 5, the locking part 61 is hooked and locked by the locked part 62, and the socket cover 4 is suspended from the instrument body 1. It is lowered and temporarily held (see FIG. 12B).

  In the temporarily held state as described above, the socket cover 4 can rotate in the longitudinal direction of the casing 10 around the locking portion 61 of the socket cover 4 locked to the opening 52c of the casing 10. It becomes.

It is a partially cutaway exploded perspective view seen from the lower part of the principal part of 1st embodiment of this invention. It is a perspective view explaining the connection of the shape variable member in the same as the above. It is a partial notch exploded perspective view seen from the downward direction of the principal part of 2nd embodiment of this invention. It is a side view explaining the positional relationship of the socket cover and instrument main body in the same as the above, (a) is explanatory drawing of the state fixed by the fixing means, (b) is the state temporarily hold | maintained by the temporary holding means. It is explanatory drawing, (c) is explanatory drawing of the state which is rotating the socket cover to a longitudinal direction. It is a partial notch exploded perspective view seen from the downward direction of the principal part of 3rd embodiment of this invention. It is a front view explaining the positional relationship of the socket cover and instrument main body in the same as above, (a) is explanatory drawing of the state fixed by the fixing means, (b) is in the state temporarily held by the temporary holding means. It is explanatory drawing. It is the partially cutaway exploded perspective view seen from the lower part of the principal part of 4th embodiment of this invention. It is a side view explaining the positional relationship of the socket cover and instrument main body in the same as the above, (a) is explanatory drawing of the state fixed by the fixing means, (b) is the state temporarily hold | maintained by the temporary holding means. It is explanatory drawing. It is a front view explaining the positional relationship between the socket cover and the instrument body in the same as above, (a) is an explanatory view of the state temporarily held by the temporary holding means, (b) is rotating the socket cover in the short direction It is explanatory drawing of the state made to do. It is a front view explaining the positional relationship of the socket cover and instrument main body in 5th embodiment of this invention, (a) is explanatory drawing of the state temporarily hold | maintained by the temporary holding means, (b) is a socket It is explanatory drawing of the state which is rotating the cover in a transversal direction. It is a partial notch exploded perspective view seen from the downward direction of the principal part of 6th embodiment of this invention. It is a figure explaining the positional relationship of the socket cover and instrument main body in the same as the above, (a) is explanatory drawing of the state fixed by the fixing means, (b) is description of the state temporarily hold | maintained by the temporary holding means. FIG. It is the disassembled perspective view seen from the downward direction of the principal part of the prior art example. It is a perspective view explaining attachment of a socket cover in the same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument body 2 Lamp 31 Socket 4 Socket cover 5 Fixing means 6 Temporary holding means

Claims (3)

A lighting fixture comprising: a fixture body having a casing with an open bottom surface; a socket provided on the fixture body and mounted with a lamp; and a socket cover fixed to the fixture body and covering at least the socket. fixing means for performing fixing to the body is provided on the socket cover and the fixture body, a socket cover is temporarily held hanging from the device body in a state where the socket cover by removing the fixing by the fixing means is moved downward, the temporary As a holding means, the socket cover and the instrument main body are connected by a shape variable member made of a string or a wire, and the string or the wire has a main body part and a huge part that is enormous compared to the main body part. An opening is provided on the inner surface, and the opening has a narrower gap extending downward from the lower side of the opening than the main body, and from the lower end of the gap. Luminaire, characterized in that in comparison with the majority consisting of a locking hole for locking the small ampulla. The instrument body is provided with a casing having a substantially rectangular shape in plan view with the lower surface opened, and sockets are accommodated at both ends in the longitudinal direction of the casing, and the socket cover is suspended from the instrument body by temporary holding means. The lighting apparatus according to claim 1, wherein the cover is rotatable in the longitudinal direction of the casing. The instrument body is provided with a casing having a substantially rectangular shape in plan view with the lower surface opened, and sockets are accommodated at both ends in the longitudinal direction of the casing, and the socket cover is suspended from the instrument body by temporary holding means. The lighting apparatus according to claim 1, wherein the cover is rotatable in a short direction of the casing.

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