JP6459651B2 - Lamp - Google Patents

Description

  The present invention relates to a lamp that includes a lamp socket that holds a pair of both ends of a straight tube lamp in a detachable manner and supplies at least one of the lighting power of the straight tube lamp.

  As a lamp provided with a lamp socket, for example, there is a lighting device disclosed in Patent Document 1 below. In this lighting device, an LED lamp is used as the straight tube lamp, and a lamp socket and a socket cover made of resin such as plastic are used. In general, in view of electrical insulation characteristics, mass productivity, and component costs, these components are often made of resin.

JP 2014-86260 A

  However, depending on the environment in which such a lamp is used, the use of combustible materials may be restricted due to laws and regulations. For example, in the case of a lamp mounted on a railway vehicle, it may be necessary to satisfy the requirements for non-combustible specifications in the future, while the product cost is required to be kept low. Therefore, it becomes difficult to use the resin socket cover easily as in the lighting device disclosed in Patent Document 1. In addition, in the case of small lot production, parts with processing that requires a mold are easily avoided from the viewpoint of manufacturing cost. For example, a socket cover manufactured by extrusion molding an aluminum material may be difficult to handle. is there.

  Further, since the socket cover is configured to cover the socket holding the straight tube lamp, the socket cover becomes an obstacle in the lamp replacement operation. Therefore, in addition to being able to easily remove the socket cover from the lighting device attached to the ceiling of a railway vehicle or the like, a structure in which the removed socket cover is difficult to fall is required. Moreover, it is necessary to be able to perform the mounting work easily. That is, it is necessary to provide a socket cover that can be easily attached and removed but does not fall.

  The present invention has been made to solve the above-described problems, and provides a lamp provided with a socket cover that can cope with non-combustible specifications and can be easily detached and prevented from falling while suppressing an increase in product cost. For the purpose.

  In order to achieve the above object, the lamp of the present invention according to claim 1 of the present invention holds a pair of both ends of a straight tube lamp in a detachable manner and at least one of the lighting powers of the straight tube lamp. A lamp socket that supplies a pair of lamp sockets to the box-shaped bottom plate formed by processing a metal plate into a strip-like box shape extending in the length direction of the straight tube lamp. A lamp body that is erected on the outer surface of the lamp, a socket cover that is formed by processing a metal plate into a shape that covers one end of the straight tube lamp and the lamp socket that holds the end, and Rotation for rotating the socket cover about an axis extending in the short direction of the lamp body and positioned between an end of the lamp body and the lamp socket provided near the end. Mechanism, The lamp tube is disposed in the vicinity of the opposite surface opposite to the facing surface of the lamp socket facing the end portion of the straight tube lamp, and prevents the lamp socket from falling in the opposite surface direction. And a holding mechanism capable of holding a held portion provided in the socket cover. The “straight tube lamp” includes both a fluorescent lamp and an LED lamp as long as it is of a rod-like straight tube type. Further, the lighting power supplied by the lamp socket may be either one or both of the pair of lamp sockets.

  The socket cover that covers the lamp socket is formed by processing a metal plate. The socket cover is rotated about a shaft extending in the short direction of the lamp body by the rotation mechanism, and the held portion of the socket cover is held by a holding mechanism provided on the opposite surface of the lamp socket. As a result, the socket cover can comply with non-combustible specifications and can be manufactured at low cost by bending or the like by sheet metal processing that does not require a dedicated mold or the like. Further, since the lamp body and the socket cover are formed by sheet metal processing for processing a metal plate, for example, compared to a case where the lamp body and the socket cover are formed by extrusion, the structure is simple and the processing is easy. In addition, since the pivot mechanism pivots about the axis located between the end of the lamp body and the lamp socket provided near the end, it is easy to replace the lamp from the lamp body. Can be removed from the lamp body and is not separated from the lamp body. Furthermore, since the held portion of the socket cover is detachably held by the holding mechanism, the socket cover can be easily attached to the lamp body. Moreover, this holding mechanism is arrange | positioned in the vicinity of the opposite surface of a lamp socket, and suppresses falling of a lamp socket. For this reason, when an excessive force is applied to the opposite side of the lamp socket during lamp replacement work or the like, damage to the lamp socket due to falling is suppressed. Also, the length of the lamp socket in the longitudinal direction of the lamp body is shorter than in the configuration in which such a holding mechanism is provided on the side of the facing surface of the lamp socket. Therefore, the socket cover becomes compact.

  Moreover, the lamp described in claim 2 of the claim is the lamp described in claim 1, wherein the rotating mechanism is configured such that the rotation mechanism is configured to move the bottom plate from a cover end of the socket cover close to the bottom plate of the lamp body. A protruding plate that protrudes in the direction of, a through groove that allows the protruding plate to pass through the bottom plate, and a tip of the protruding plate that passes through the through groove to prevent the protruding plate from coming off. And a protruding member protruding in this manner.

  Furthermore, the lamp described in claim 3 of the claim is the lamp described in claim 1, wherein the rotation mechanism is provided at a cover end of the socket cover near the bottom plate of the lamp body. It is a hinge comprising: one hinge piece; the other hinge piece provided on the bottom plate; and a shaft rod that rotatably connects the one hinge piece and the other hinge piece; To do.

  In the lamp of the present invention, the socket cover is formed by processing a metal plate, is rotated around an axis extending in the short direction of the lamp body by a rotating mechanism, and is detachably held by a holding mechanism. Is done. Accordingly, it is possible to provide a lamp provided with a socket cover that can cope with non-combustible specifications, can be easily detached, and can be prevented from falling while suppressing an increase in product cost.

FIG. 1 (A) is an explanatory view showing a use state of a lamp according to an embodiment of the present invention, and FIG. 1 (B) shows a central axis of the lamp within a chain line 1B shown in FIG. 1 (A). It is an expanded sectional view at the time of cut | disconnecting by XZ plane along. FIG. 2 (A) is a front view, FIG. 2 (B) is a rear view, and FIG. 2 (C) is a plan view (or a bottom view) when the light emitting side of the lamp is front. FIG. 2D is a left side view (or right side view). It is a perspective view of the socket cover which comprises a lamp. FIG. 4A is a six-side view of the socket cover when the light emitting side of the lamp is front, FIG. 4A is a front view, FIG. 4B is a rear view, FIG. 4C is a plan view, and FIG. ) Is a left side view, and FIG. 4 (E) is a right side view. Note that the bottom view of the socket cover corresponds to the plan view of FIG. In the enlarged cross-sectional view shown in FIG. 1 (B), FIG. 5 (A) shows a state in which the socket cover is pulled downward (in the direction of the root of the Z-axis) and released from the ball catch, and FIG. A state in which the lamp socket is exposed by rotating the cover clockwise is shown. FIG. 6 is an explanatory view showing an example of a state in which the end portion of the lamp after the straight tube lamp is removed is looked up from below (the Z-axis root direction) in the state of FIG. FIG. 7 is an explanatory view when a hinge structure is formed on a main body case and a socket cover as another configuration example of the rotation mechanism, and an enlarged cross-sectional view corresponding to FIG. FIG. 7A shows the socket cover alone as shown in FIG. A left side view (or right side view) corresponding to FIG. 2D is shown in FIG. FIG. 8A is an explanatory diagram when a hinge structure is formed on the main body case and the socket cover as another configuration example of the rotating mechanism, and FIG. 8A is an enlarged cross-sectional view corresponding to FIG. 8 (B) is an enlarged sectional view corresponding to FIG. 5 (B).

  Hereinafter, an embodiment of a lamp of the present invention will be described with reference to the drawings. First, a configuration outline of the lamp 10 will be described with reference to FIGS. 1 and 2. FIG. 1 (A) shows an explanatory diagram showing a use state of the lamp 10 according to an embodiment of the present invention, and FIG. 1 (B) shows the state shown in FIG. 1 (A). The enlarged cross-sectional view in the case where the inside of the dashed-dotted line 1B is cut along the central axis of the lamp 10 along the XZ plane is shown. FIG. 2 shows a six-sided view of the lamp 10 when the light emitting side of the lamp 10 is front. 2A is a front view, FIG. 2B is a rear view, FIG. 2C is a plan view (or bottom view), and FIG. 2D is a left side view (or right side view).

  As shown in FIG. 1 (A), a lamp 10 according to the present embodiment is an indoor lighting device that is used by being attached to a ceiling 100 or a wall in a passenger compartment of a shared vehicle such as a railway vehicle or a route bus. . In the present embodiment, the lamp 10 mainly includes a thin box-shaped main body case 20 having a long strip shape, a straight tube lamp 11, and a straight tube lamp provided in the main body case 20. 11, a lamp socket 14 that holds both ends of the lamp 11, a socket cover 30 that covers the lamp socket 14, and a power supply unit 19. Hereinafter, in the coordinate system shown in FIG. 1 and other figures, the longitudinal direction (length direction) of the lamp 10 is the X-axis direction, the short direction (width direction) of the lamp 10 is the Y-axis direction, and the height of the lamp 10 is The vertical direction is expressed as the Z-axis direction.

  As shown in FIGS. 1B and 2, the main body case 20 includes a box-shaped panel 21, a bolt guide 23, and a ball catch 27. The box-shaped panel 21 is formed in a thin box shape with a bottom configured by bending (sheet metal processing) an iron plate having a thickness of about 1 mm to 2 mm, for example. On the bottom plate 21a of the box-shaped panel 21, lamp attachment holes 22 are formed at a plurality of locations (six locations in the present embodiment) near the periphery. A bolt guide 23 that surrounds a part of the outer periphery of the lamp mounting hole 22 is welded and fixed to a peripheral wall 21b that surrounds the back side of the bottom plate 21a. When the mounting bolt 90 is inserted into the lamp mounting hole 22 and the lamp 10 is mounted on the ceiling 100 or the like, the bolt guide 23 keeps the direction of the mounting bolt 90 constant and the beam material provided on the ceiling 100 or the like. Guide the screw hole direction.

  A socket mounting hole 24 is formed in the box-shaped panel 21 at a position where the lamp socket 14 is mounted. That is, a socket mounting hole 24 having a shape into which the fixing portion 18 of the lamp socket 14 can be fitted is formed at the center in the width direction (Y-axis direction) near both ends of the lamp 10 (box-shaped panel 21). Further, between the end portion 21e in the longitudinal direction (X-axis direction) of the box-shaped panel 21 and the socket mounting hole 24, a length extending linearly in the width direction (Y-axis direction) of the box-shaped panel 21 and penetrating therethrough. A hole, that is, a slit 25 is formed. The length of the slit 25 is set to be slightly larger than the plate width of an L-shaped plate 32 described later. The groove width W of the slit 25 is set to a size that allows the L-shaped plate 32 to tilt at a predetermined angle. In the present embodiment, the socket cover 30 covers the lamp sockets 14 on both sides that hold both ends of the straight tube lamp 11. Therefore, the slit 25 is provided at both end portions 21 e of the box-shaped panel 21.

  The box-like panel 21 is formed with a screw hole 26 for fixing a ball catch 27 provided alongside the lamp socket 14 on the front side. As will be described later, the ball catch 27 is attached to the front side (outer surface) of the box-shaped panel 21 so as to be adjacent to the back surface 15b of the lamp socket 14. Therefore, the screw hole 26 is formed between the socket mounting hole 24 and the slit 25. Although not shown, a hole for fixing the power supply unit 19 to the box-shaped panel 21 and a wiring holder for fixing the electric wiring connected to the power supply unit 19 to the box-shaped panel 21 are provided on the back side of the box-shaped panel 21. Is formed.

  The straight tube lamp 11 is, for example, a 20W straight tube LED lamp. In this embodiment, the caps 13 are provided at both ends of the cylindrical light emitting unit 12, and pin-shaped terminals protrude from the caps 13. For example, two power supply terminals 13 a and 13 b protrude from the base 13 on one end side (power supply side), and one ground terminal protrudes from the base 13 on the other end side (ground side). Accordingly, a power supply electrode 17 is provided on the lamp socket 14 on one end side, and a ground electrode is provided on the lamp socket 14 on the other end side. FIG. 1B shows a lamp socket 14 on one end side where a power supply electrode 17 is provided. These electrodes 17 and the like are electrically wired to the power supply unit 19 and supplied with DC power suitable for a straight tube LED lamp.

  The lamp socket 14 is provided so as to rise from the front side (outer surface) of the box-shaped panel 21 so that both the caps 13 (both ends) of the straight tube lamp 11 can be held. That is, the two lamp sockets 14 are erected so as to face both sides of the light emitting side of the main body case 20. The lamp socket 14 is made of plastic (synthetic resin), and the box-shaped panel 21 is fixed by fitting the fixing portion 18 of the lamp socket 14 into the socket mounting hole 24 as described above. The lamp socket 14 receives the base 13 of the straight tube lamp 11 through the socket portion 15. On the surface 15 a of the socket portion 15, an insertion groove 16 is formed that allows the feeding terminals 13 a and 13 b of the straight tube lamp 11 to be inserted from the top of the lamp socket 14. Inside the insertion groove 16, an electrode 17 for supplying power to the power supply terminals 13a and 13b of the straight tube lamp 11 is provided.

  A ball catch 27 is provided on the opposite side of the front surface 15a of the socket portion 15, that is, on the back surface 15b of the socket portion 15 (lamp socket 14) so as to be adjacent thereto. The ball catch 27 is screwed and fixed to the screw hole 26 of the box-shaped panel 21 with a bolt (not shown). The ball catch 27 includes a pair of opposing balls, a spring member that pushes these balls toward each other, and a housing that houses the ball and the spring member. The housing of the ball catch 27 is formed by, for example, die casting and is configured to be robust. The operation of the ball catch 27 will be described later with reference to FIG. A description of a more specific configuration of the ball catch 27 is disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-223340 (FIG. 16 and the like), so please refer to that.

  In the present embodiment, the socket cover 30 is held so as not to be detached from the main body case 20 by holding the convex portion 33 provided on the socket cover 30 with the balls of the ball catch 27. The ball catch 27 is disposed adjacent to the vicinity of the back surface 15b of the lamp socket 14. Therefore, even if the lamp socket 14 is inclined in the direction of the ball catch 27, the lamp socket 14 is prevented from falling in that direction. Further, the length of the socket cover 30 in the longitudinal direction (X-axis direction) is shorter than the case where such a ball catch 27 is provided in the direction of the surface 15a of the lamp socket 14.

  That is, the solid ball catch 27 is attached to the box-shaped panel 21 adjacent to the back surface 15 b of the lamp socket 14. Thereby, for example, when replacing the straight tube lamp 11 or the like, even if a force in the direction inclined toward the ball catch 27 (the longitudinal direction (X axis direction) outward of the lamp 10) is applied to the lamp socket 14, The ball catch 27 prevents the lamp socket 14 from falling down. Therefore, it becomes possible to suppress the breakage of the lamp socket 14 due to such a fall of the lamp socket 14. Further, it is not necessary to separately provide an auxiliary metal fitting for preventing the lamp socket 14 from falling down, which contributes to a reduction in the number of parts. Further, since the length of the socket cover 30 in the longitudinal direction (X-axis direction) is shortened, the socket cover 30 is also made compact. Since the portion of the straight tube lamp 11 covered with the socket cover 30 can be shortened as much as possible, it is possible to suppress a decrease in light emission range and a decrease in light emission efficiency due to the socket cover 30 covering the light emitting unit 12.

  The socket cover 30 covers the periphery of the lamp socket 14 so as to hide the lamp socket 14 from the line of sight of the passenger and improve the appearance of the entire lamp 10. Also, in the unlikely event that the lamp socket 14 is melted by heat, the lamp socket 14 receives the melted resin and also serves to prevent dripping of the melted resin. FIG. 3 is a perspective view of the socket cover 30, and the description will be made with reference to FIG. FIG. 4 shows a six-sided view of the socket cover 30, and this is also referred to. 4A is a front view of the socket cover 30, FIG. 4B is a rear view of the socket cover 30, FIG. 4C is a plan view of the socket cover 30, and FIG. FIG. 4E is a right side view of the socket cover 30. The bottom view of the socket cover 30 is represented in the same manner as the plan view of FIG.

  The socket cover 30 includes a cover main body 31, an L-shaped plate 32 that is fixed to the inside of the cover main body 31, a convex portion 33 that is attached to an overhang portion 32 c of the L-shaped plate 32, and a distal end portion of the L-shaped plate 32. And a bolt 37 provided. The cover body 31 is formed by bending, for example, an iron plate having a thickness of about 1 mm to 2 mm into a bottomed vertically-divided polygonal cylinder shape that covers the lamp socket 14 by sheet metal processing, similarly to the box-shaped panel 21 described above.

  For example, the cover main body 31 is composed of two iron plates, a main body plate 31a and an end plate 31b, and the end plate 31b is welded or bonded to the main body plate 31a so as to close one end side of the bent main body plate 31a. To do. Further, the cover main body 31 may be configured by bending a developed flat plate connecting the main body plate 31a and the end plate 31b by sheet metal processing. The cover main body 31 may be thicker than the box-shaped panel 21. As a result, a more robust cover body 31 can be configured. These are processed by a general-purpose press device such as a press brake, for example, and do not require a dedicated mold. Further, by forming the box-shaped panel 21, the cover main body 31, and the L-shaped plate 32 with iron plates (metal plates), their mechanical strength can be increased as compared with the case where they are formed with a resin such as plastic. Thereby, when the socket cover 30 is rotated, it is possible to prevent the periphery of the slit 25 from being broken or the L-shaped plate 32 from being broken.

  In the present embodiment, when the lamp cover 14 standing on the box-shaped panel 21 is covered with the socket cover 30, the top of the lamp socket 14 (or the straight tube lamp 11 held by the lamp socket 14). The size of the cover body 31 in the height direction (Z-axis direction) is set so that a gap SP is formed at a predetermined interval between the base 13) and the top inner surface T of the cover body 31. For example, the height of the cover body 31 (the size in the height direction) is set to a size that allows the maintenance operator's index finger to enter the gap SP.

  The L-shaped plate 32 is formed by bending a thick steel plate, for example, about twice as thick as the box-shaped panel 21 and the cover body 31 into an L-shape, and includes a fixed portion 32a, a protruding portion 32b, and a tension member. It is comprised by the protrusion part 32c. The fixing portion 32a is a portion for fixing the L-shaped plate 32 to the end plate 31b of the cover main body 31, and for example, both are firmly fixed by welding. The protruding portion 32b is an extension of the fixing portion 32a, and is not fixed to the end plate 31b, and is not fixed to the end plate 31b, but the cover end 36 close to the upper end of the cover body 31 (the tip direction of the Z-axis), It is the part which protruded from. The protrusion 32b is inserted into the slit 25 formed in the bottom plate 21a, and a bolt 37 is attached to the tip. The bolt 37 is set to an axial length that exceeds the groove width W of the slit 25. Such a bolt 37 is screwed and fixed to the tip of the protruding portion 32 b so that the protruding portion 32 b inserted into the slit 25 does not come out of the slit 25.

  On the other hand, the overhanging portion 32c bent substantially at right angles from the fixed portion 32a of the L-shaped plate 32 extends in the longitudinal direction (X-axis direction) of the cover main body 31 so as to protrude into the cover main body 31 from the end plate 31b. Yes. That is, in a state where the socket cover 30 covers the lamp socket 14, the overhanging portion 32c of the L-shaped plate 32 is positioned substantially parallel to the bottom plate 21a of the box-shaped panel 21, and the tip of the overhanging portion 32c is the box. The overhang length of the overhang portion 32 c is set so as to cover the ball catch 27 fixed to the shaped panel 21. In other words, in the state where the protruding portion 32b is inserted into the slit 25 and the overhanging portion 32c is substantially parallel to the bottom plate 21a, the overhanging portion 32c is prevented from coming into contact with the back surface 15b of the lamp socket 14. An overhang length of 32c is set.

  By attaching the convex portion 33 that can be held by the ball catch 27 to the tip portion of the overhang portion 32c, the socket cover 30 that covers the lamp socket 14 can be held by the holding force of the ball catch 27. become. Thus, the convex part 33 which can hold | maintain the ball catch 27 is screwed and fixed to the front-end | tip part of the overhang | projection part 32c of the L-shaped plate 32 with the flat head screw 35. As shown in FIG. This is illustrated in detail in FIG.

  As shown in FIG. 3 and FIG. 4 (E), the convex portion 33 has a width of the tip portion of the protruding end wider than the root portion of the protruding end. For this reason, when the protruding end of the convex portion 33 once spreads both opposing balls of the ball catch 27 and enters between the balls, both balls pinch the root portion of the protruding end. Therefore, thereafter, the convex portion 33 continues to be held by the ball catch 27 until a reverse force is applied to pull out the convex portion 33 from the ball catch 27. In addition, although the combination of the ball catch 27 and the convex part 33 may be called a "ball catch", in this embodiment, the ball catch 27 which is an example of a holding mechanism, and the convex part 33 which is an example of a to-be-held part are used. Distinguish.

  As shown in FIG. 1B, the socket cover 30 configured in this manner has the top inner surface T of the cover body 31 so as to cover the lamp socket 14 and is positioned substantially parallel to the box-shaped panel 21, and The socket cover 30 is held by the main body case 20 by setting the convex portion 33 so as to be held between both balls of the ball catch 27. The length of the protruding portion 32 b of the L-shaped plate 32 is set in a range in which the length inserted into the slit 25 (insertion length) does not exceed the height of the peripheral wall 21 b of the box-shaped panel 21. This is because when the insertion length of the protrusion 32b exceeds the height of the peripheral wall 21b, the tip of the protrusion 32b can abut on the ceiling 100 or the like.

  Further, in the state shown in FIG. 1B, that is, in a state where the socket cover 30 is held by the main body case 20, the socket cover 30 is pulled downward (in the Z-axis base direction). Then, a force in a direction of pulling the convex portion 33 from the ball catch 27 acts on the convex portion 33 of the socket cover 30, so that the tip portion of the protruding end of the convex portion 33 spreads both the balls and opens the convex portion 33. The tip separates from between both balls. That is, the convex portion 33 is released from the ball catch 27. The state at this time is shown in FIG. 5 (A), and the subsequent state is shown in FIG. 5 (B), and will be described below with reference to FIG. Reference is also made to FIG. FIG. 6 is an explanatory diagram showing an example of a state in which the end portion of the lamp 10 after the straight tube lamp 11 is removed is looked up from below (the Z-axis base direction) in the state of FIG. 5 (B). It is shown in the figure.

That is, as shown in FIG. 5A, when the projection 33 is not held by the ball catch 27, the projection 33 of the socket cover 30 escapes from between the balls 28 of the ball catch 27. Thereby, the socket cover 30 can be separated from the main body case 20. Therefore, the gap SP ′ between the top inner surface T of the cover body 31 and the top of the lamp socket 14 (or the base 13 of the straight tube lamp 11) is widened, and the insertion length of the long protrusion 32b inserted into the slit 25 is increased. Becomes smaller. When the socket cover 30 is pulled in a direction away from the main body case 20 so as to further pull out the protruding portion 32b from the slit 25 of the box-shaped panel 21, the bolt 37 fastened to the distal end portion of the protruding portion 32b eventually becomes a box-shaped panel. 21 abuts on the back side. Thereby, the drawer | drawing-out of the protrusion part 32b is controlled. That is, when the lamp 10 is attached to the ceiling 100 or the like, the socket cover 30 is prevented from falling. In addition, when the lamp 10 is looked up with the straight tube lamp 11 removed from the lamp socket 14, it looks as shown in FIG. In FIG. 6, the opposing ball 28 of the ball catch 27 can be seen.
I understand the structure well.

  As described above, in the present embodiment, the length of the slit 25 formed in the bottom plate 21 a of the box-shaped panel 21 is set to be slightly larger than the plate width of the L-shaped plate 32. Therefore, as shown in FIG. 5 (A), the socket cover 30 separated from the main body case 20 is within a range in which the protruding portion 32b can move in the slit 25 in the length direction of the protruding portion 32b of the L-shaped plate 32. It can be moved freely. The groove width W of the slit 25 is set to a size that allows the L-shaped plate 32 to tilt at a predetermined angle. Therefore, as shown in FIG. 5B, the socket cover 30 can be rotated within the range of this angle. That is, the socket cover 30 rotates around an axis extending in the short direction (Y-axis direction) of the box-shaped panel 21 and existing in the slit 25. The “axis existing in the slit 25” is a virtual axis at the center of rotation, and is not a shaft part such as a shaft bar. That is, in the present embodiment, the socket cover 30 can be rotated with a structure that does not require a shaft component by the slit 25 formed in the box-shaped panel 21 and the protruding portion 32b of the L-shaped plate 32 inserted therein. ing. Note that the groove width W of the slit 25 (see FIGS. 1B and 6) is, for example, the minimum value at which the socket cover 30 can rotate within an angle range necessary for the replacement work of the straight tube lamp 11. Set to. Thereby, it is suppressed as much as possible that the socket cover 30 moves to the length direction (X-axis direction) of the lamp 10, and the determination accuracy of the socket cover 30 with respect to the length direction (X-axis direction) is improved.

  As described above, in the lamp 10 according to the present embodiment, the socket cover 30 that covers the lamp socket 14 is formed by processing a metal plate. The socket cover 30 functions as a rotation mechanism, and protrudes from the cover end 36 of the socket cover 30 in the direction of the bottom plate 21a of the main body case 20, and a strip longer than the width of the protrusion 32b. The main body case 20 includes a slit 25 that penetrates the bottom plate 21a and a bolt 37 that is provided at the tip of the protruding portion 32b that passes through the slit 25 and protrudes in the plate thickness direction of the protruding portion 32b larger than the groove width W of the slit 25. Is an axis extending in the short direction (Y-axis direction) and positioned between the end portion 21e of the main body case 20 and the lamp socket 14 provided near the end portion 21e (an axis existing in the slit 25). ). Further, the convex portion 33 attached to the overhang portion 32 c of the socket cover 30 is held by a ball catch 27 provided on the back surface 15 b of the lamp socket 14.

  Thereby, the socket cover 30 can respond to non-combustible specifications, and can be manufactured at low cost by bending by sheet metal processing that does not require a dedicated mold or the like. Further, the projecting portion 32b, the slit 25, and the bolt 37 rotate about an axis (an axis existing in the slit 25) located between the end portion 21e of the main body case 20 and the lamp socket 14, so that the straight pipe When the lamp 11 is replaced, it can be easily removed from the main body case 20 and is not separated from the main body case 20 and removed. Further, since the convex portion 33 of the socket cover 30 is detachably held by the ball catch 27, the socket cover 30 can be easily attached to the main body case 20. Therefore, it is possible to provide the lamp 10 provided with the socket cover 30 that can cope with non-combustible specifications and can be easily detached and prevented from falling while suppressing an increase in product cost.

  In addition, as shown in FIG. 7 and FIG. 8, you may comprise a rotation mechanism with a hinge. FIG. 7 shows an explanatory diagram in the case where a hinge structure is formed in the main body case 20 and the socket cover 30 as another configuration example of the rotation mechanism, and FIG. In the enlarged cross-sectional view corresponding to), the socket cover 60 is removed. FIG. 7B shows a single socket cover 60 in the enlarged sectional view. Further, FIG. 7C shows a left side view (or right side view) corresponding to FIG. 2D in the enlarged sectional view. FIG. 8A shows an enlarged cross-sectional view corresponding to FIG. 1B, and FIG. 8B shows an enlarged cross-sectional view corresponding to FIG. 5B. Note that, in each of these drawings, the same reference numerals are given to substantially the same components as the main body case 20 and the socket cover 30 described above.

  As shown in FIGS. 7 and 8, the hinge structure as the rotation mechanism includes a case side hinge piece 51 formed on the bottom plate 41 a of the box-like panel 41 of the main body case 40 and the cover main body 61 of the socket cover 60. A cover-side hinge piece 53 formed on the end plate 61b, and a shaft bar 55 that rotatably connects the case-side hinge piece 51 and the cover-side hinge piece 53 are provided. That is, the case side hinge piece 51 is formed on the bottom plate 41a corresponding to the range where the slit 25 of the main body case 20 is formed, and the cover side 66 of the socket cover 60 near the bottom plate 21a of the box-like panel 21 is covered with the cover side. A hinge piece 53 is formed. The peripheral wall 41b corresponds to the peripheral wall 21b of the box-shaped panel 21 described above. The main body plate 61a corresponds to the main body plate 31a of the cover main body 31 described above.

  Even if the rotation mechanism is configured in this way, as shown in FIG. 8, the shaft extends in the short direction (Y-axis direction) of the main body case 40, and includes an end portion 41e of the main body case 40 and the end portion 41e. It can be rotated around an axis J (see FIG. 7C) located between the lamp socket 14 provided nearby. Further, similarly to the main body case 20 and the main body case 40 described above, since the convex portion 33 attached to the L-shaped plate 32 of the socket cover 60 is held by the ball catch 27 provided on the back surface 15b of the lamp socket 14, the main body The socket cover 60 can be held on the case 40. By forming the box-shaped panel 41 and the cover main body 61 from an iron plate (metal plate), their mechanical strength can be increased compared to the case where they are formed from a resin such as plastic. Thereby, when the socket cover 60 is rotated, when an excessive force is applied to the case-side hinge piece 51 or the cover-side hinge piece 53, it is possible to suppress such damage. Therefore, similarly to the lamp 10 shown in FIGS. 1 to 6, it is possible to provide a lamp provided with a socket cover 60 that can cope with non-combustible specifications and can be easily detached and prevented from falling while suppressing an increase in product cost. it can.

  7 and 8, the hinge pieces are formed on the bottom plate 41a of the main body case 40 and the end plate 61b of the socket cover 60. However, the hinges themselves are formed on the main body case 40 and the socket cover 60. It is also possible to configure the hinge structure as a rotating mechanism by configuring it as a separate part and attaching one hinge piece to the bottom plate 41a and the other hinge piece to the end plate 61b.

  In the above-described embodiment, the ball catch 27 is used as the “holding mechanism” provided in the main body cases 20, 40, and the socket cover 30, 60 is provided as the “held portion” held by the ball catch 27. Although the convex portion 33 has been described as an example, the “holding mechanism” and the “held portion” are not limited thereto. For example, a push latch as disclosed in JP 2002-352571 A (a door open / close detection device locked by a push latch and a disk device using the same) may be used. That is, the push latch 4 disclosed in FIG. 1 and the like of the publication is provided as a “holding mechanism” in the main body cases 20 and 40, and the locked portion 2 a is provided as a “held portion” in the socket covers 30 and 60. . Thereby, when the to-be-latched part 2a is latched by the push latch 4, the socket covers 30, 60 can be held in the main body cases 20, 40. Further, when the locked portion 2a is unlocked by pressurizing the locked portion 2a held by the push latch 4 further, the socket cover 30 is removed from the body cases 20 and 40. , 60 can be released and the socket covers 30, 60 can be rotated.

  Further, in the above-described embodiment, the case of a straight tube LED lamp has been described as an example of the straight tube lamp 11, but a rod-shaped straight tube type fluorescent lamp may be used. In the case of a fluorescent lamp, two power supply terminals 13a and 13b protrude from the base 13 of the straight tube lamp 11 in the same manner at both ends. Therefore, as shown in FIG. 1B, the lamp sockets 14 at both ends are provided with power supply electrodes 17, and the AC power suitable for the fluorescent lamp is applied to these electrodes 17. Is configured to be supplied from the power supply unit 19.

  Furthermore, in the socket cover 30 of the above-described embodiment, the iron plate is formed into a bottomed vertically-divided polygonal cylinder by sheet metal processing as a shape that covers the base 13 of the straight tube lamp 11 and the lamp socket 14 that holds the base 13. Bent and shaped, but if it is a vertically-divided bottomed cylindrical shape, for example, a steel plate is bent by sheet metal processing into a shape with a bottomed cylindrical shape or a bottomed prismatic shape vertically divided along their axial direction May be molded.

  In the above-described embodiment, the box-like panel 21 and the socket cover 30 of the main body case 20 are made of iron plate. However, if the metal plate can be processed by sheet metal, it is made of aluminum plate, stainless steel plate, or the like. Also good.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications or changes of the specific examples described above. In addition, the technical elements described in the present specification or drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technique illustrated in this specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of these objects. Note that the description in parentheses in the [Explanation of Symbols] clearly shows the correspondence between the terms used in the above-described embodiments and the terms described in the claims.

10 ... Lamp 11 ... Straight tube lamp 13 ... Base (end)
14 ... Lamp socket 15 ... Socket part 15a ... Surface (opposite surface)
15b ... Back side (opposite side)
19 ... Power supply unit 20, 40 ... Main body case (lamp body)
21, 41 ... Box-shaped panel 21a, 41a ... Bottom plate 21b, 41b ... Peripheral wall 21e, 41e ... End (end of lamp body)
25 ... Slit (rotating mechanism, through groove)
27 ... Ball catch (holding mechanism)
30, 60 ... Socket cover 31, 61 ... Cover body 32 ... L-shaped plate 32b ... Protruding part (rotating mechanism, protruding plate)
33 ... convex part (held part)
36, 66 ... cover end 37 ... bolt (rotating mechanism, convex member)
50 ... Hinge (rotating mechanism)
51. Case side hinge piece (the other hinge piece)
53 ... Cover side hinge piece (one hinge piece)
55 ... Shaft bar 90 ... Mounting bolt 100 ... Ceiling J ... Axis line SP ... Gap T ... Top inner surface W ... Groove width (groove width of through groove)

Claims (3)

A lamp provided with a lamp socket that holds both ends of a straight tube lamp in a detachable manner and supplies at least one of the lighting power of the straight tube lamp,
A lamp body that is formed by processing a metal plate into a strip-like box shape extending in the length direction of the straight tube lamp, and a pair of the lamp sockets are erected on the outer surface of the box-shaped bottom plate;
A socket cover formed by processing a metal plate into a shape covering one end of the straight tube lamp and the lamp socket holding the end; and
Rotation for rotating the socket cover about an axis extending in the short direction of the lamp body and positioned between an end of the lamp body and the lamp socket provided near the end. Mechanism,
The lamp socket is disposed in the vicinity of the opposite surface located on the opposite side to the opposite surface of the lamp socket that faces the end of the straight tube lamp, and the lamp socket is prevented from falling in the opposite surface direction. A holding mechanism capable of holding a held portion provided in the socket cover;
A lamp characterized by comprising. The rotation mechanism is
A protruding plate protruding in the direction of the bottom plate from a cover end near the bottom plate of the lamp body of the socket cover,
A through groove that passes through the bottom plate and allows the protruding plate to be inserted;
A convex member that is provided at the tip of the protruding plate that penetrates the through groove and protrudes to prevent the protruding plate from coming off;
The lamp according to claim 1, further comprising: The rotation mechanism is
One hinge piece provided at the cover end near the bottom plate of the lamp body of the socket cover,
The other hinge piece provided on the bottom plate;
A shaft rod for rotatably connecting the one hinge piece and the other hinge piece;
The lamp according to claim 1, further comprising a hinge including the lamp.

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