JP7229123B2 - Telescopic structure for lighting fixture, lighting fixture, and lighting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture expansion/contraction structure, a lighting fixture, and a lighting apparatus using the lighting fixture that accommodate expansion and contraction of constituent members.

2. Description of the Related Art Conventionally, there has been known a lighting device capable of suppressing interference between structural parts when structural parts expand or contract due to changes in ambient temperature (see, for example, Patent Document 1). The light source unit of the illumination device disclosed in Patent Document 1 includes a waterproof case composed of a case body and two end members, and a fixture fixed to the case body of the waterproof case. A gap is provided between the fitting and the end member of the waterproof case to suppress interference between the end member and the fitting when the case body of the waterproof case expands due to changes in temperature.

Japanese Patent No. 6149688

However, the light source unit disclosed in Patent Document 1 prevents the end member from interfering with the connecting portion as the case body expands, and prevents the end member from moving when the case body expands or contracts. In order to prevent this, the shape of the fixture required a complicated structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and it is an object of the present invention to provide a lamp extension/contraction structure, a lamp, and a lighting device that are simple in structure and can accommodate expansion and contraction of members that constitute the lighting device.

A lamp telescopic structure according to the present invention includes a mounting member extending in a first direction, a cylindrical outer shell covering the mounting member and extending in the first direction and having an opening in an end face in the first direction, and an end lid that covers the end surface of the shell; a sealing member that is disposed between the end surface of the shell and the end lid; and an outer side of the end lid with respect to the shell in the first direction. a lamp-side mounting portion arranged in the The end lid, the sealing member, and the lamp-side mounting portion are restricted in movement with respect to the mounting member, and the end surface of the outer shell in the first direction is positioned in the first direction with respect to the end lid. It is movable along the direction.

A lamp according to the present invention includes the above-described lamp expandable structure, and light-emitting elements arranged on the mounting member along the first direction.

A lighting device according to the present invention includes the above-described lighting fixture and a lighting fixture installed in a construction section to which the lighting fixture is attached, wherein the lighting fixture includes a fixture-side mounting section extending in a direction intersecting the construction section. , wherein the lamp-side mounting portion of the lamp is fixed to the fixture-side mounting portion.

According to the present invention, the end surface of the cylindrical outer shell and the end lid are configured to be relatively movable along the first direction, and the expansion and contraction of the outer shell can be accommodated with a simple structure.

1 is a perspective view of lighting device 1 according to Embodiment 1. FIG. FIG. 2 is a perspective view showing division of the lighting fixture 2 and lamp fixture 3 of the lighting device 1 according to Embodiment 1; 1 is an exploded perspective view of lighting device 1 according to Embodiment 1. FIG. FIG. 3 is an explanatory diagram of a mounting mechanism for the lamp 3 of the lighting device 1 according to Embodiment 1; FIG. 3 is an explanatory diagram of a mounting mechanism for the lamp 3 of the lighting device 1 according to Embodiment 1; 3 is an exploded perspective view of one end 3A of the lamp 3 according to Embodiment 1. FIG. 3 is a cross-sectional view along the longitudinal direction X at one end 3A of the lamp 3 according to Embodiment 1. FIG. 4 is a cross-sectional view illustrating a structure around an end cover 40 of the lighting device 1 according to Embodiment 1. FIG. 4 is a cross-sectional view illustrating a structure around an end cover 40 of the lighting device 1 according to Embodiment 1. FIG. FIG. 3 is an enlarged schematic diagram for explaining the lamp extension/contraction structure 100 of the lamp 3 according to Embodiment 1;

Hereinafter, a lamp telescopic structure 100, a lamp 3, and a lighting device 1 according to an embodiment will be described with reference to the drawings. The same or corresponding components in each drawing are denoted by the same reference numerals, and repeated description may be omitted.

Here, the present invention is not limited by the embodiments described below. Also, in the following drawings, the size relationship of each component may differ from the actual size. Also, in the description of the embodiments, directions or positions such as up, down, left, right, front, back, front, and back may be indicated. These notations are for convenience of explanation, and do not limit the arrangement, direction, and orientation of devices, instruments, parts, and the like.

Embodiment 1.
<Configuration of lighting device 1>
FIG. 1 is a perspective view of a lighting device 1 according to Embodiment 1. FIG. FIG. 2 is a split perspective view of the lighting device 1 according to Embodiment 1, in which the lighting fixture 2 and the lamp fixture 3 are separated. FIG. 3 is an exploded perspective view of the lighting device 1 according to Embodiment 1. FIG. 4 and 5 are explanatory diagrams of a mounting mechanism for the lamp 3 of the lighting device 1 according to Embodiment 1. FIG. A configuration of a lighting device 1 according to an embodiment will be described with reference to FIGS. 1 to 5. FIG.

In the following description, a direction along the longitudinal direction of the illumination device 1 is defined as a longitudinal direction X. As shown in FIG. Also, a widthwise direction perpendicular to the lengthwise direction X is referred to as a widthwise direction Y. As shown in FIG. A vertical direction Z is a direction perpendicular to both the longitudinal direction X and the lateral direction Y. As shown in FIG. In addition, in the longitudinal direction X, the direction toward the longitudinal ends is defined as an end direction X1. And, it is the direction opposite to the end direction X1, and the direction toward the longitudinal center side is defined as the middle direction X2. Furthermore, in the up-down direction Z, the direction toward the construction portion 9 to which the lighting device 1 is attached (that is, the side of the attached portion such as the ceiling or the wall) is defined as an upward direction Z1. A downward direction Z2 is defined as a direction opposite to the upward direction Z1 and toward the side of the irradiation space where light is emitted from the lighting device 1 . Here, the upward direction Z1 is the direction in which the lighting device 3 is attached to the lighting device 2, and the downward direction Z2 is the direction in which the lighting device 3 is removed from the lighting device 2. FIG.

A lighting device 1 according to Embodiment 1 has a lighting fixture 2 attached to a construction portion 9 such as a ceiling or a wall, and a lighting fixture 3 attached to the lighting fixture 2 . Further, the lamp 3 has a lamp expandable structure 100 which will be described later.

(Lighting fixture 2)
As shown in FIG. 2(a), the fixture body 20 that constitutes the lighting fixture 2 is formed by bending a metal plate in the first embodiment. The instrument body 20 has an instrument bottom portion 21 , a pair of instrument side portions 22 and a pair of instrument end portions 27 . The instrument bottom surface 21 is elongated in the X direction and formed in a flat plate shape. A pair of instrument end portions 27 are arranged at both ends in the longitudinal direction X of the instrument bottom portion 21 . The fixture end portion 27 is a fixture-side mounting portion that functions as a mounting mechanism for the lighting device 1, and is a portion to which a mounting member 44 provided on the lamp 3, which is the lamp-side mounting portion, is mounted. The instrument end portion 27 is formed with a screw hole 28 into which a mounting screw 48 as a fixture is screwed. The screw holes 28 are, for example, subjected to burring processing corresponding to the mounting screws 48, or incorporated with nuts.

The mounting portion 25 is a housing portion that houses at least part of the mounted lamp 3 . The mounting portion 25 is formed in a concave shape by the device bottom portion 21 of the device body 20 , the set of device side portions 22 and the set of device end portions 27 . Therefore, the mounting portion 25 forms a space surrounded by the device bottom portion 21 of the device main body 20 , the set of device side portions 22 and the set of device end portions 27 . Here, the part of the lamp 3 facing the mounting part 25 side is a non-irradiating part that is not on the irradiation side. An open end portion 26 located at the lower end of the instrument body 20 is an opening portion that is not surrounded by the instrument body 20 . The open end portion 26 is a mounting opening for attaching and detaching the lamp 3 to and from the mounting portion 25 of the lighting fixture 2 .

Instrument ends 27 are formed at both ends in the longitudinal direction X of the opening end 26 of the instrument body 20 . The fixture end portion 27 is a fixture-side attachment section to which the lamp 3 is attached. In Embodiment 1, the instrument end portions 27 are formed integrally with the instrument bottom surface portion 21 and extend downward Z2 at both ends of the instrument bottom surface portion 21 in the X direction. A screw hole 28 formed in the fixture end 27 is a hole into which a mounting screw 48 attached to the lamp 3 is screwed. The lamp 3 is screwed and fixed to the lighting fixture 2 with a mounting screw 48 .

In the first embodiment, as an example of the fixture, a mounting screw is inserted through the mounting screw insertion hole 451 of the mounting member 44, which is the lamp-side mounting portion, and is screwed into the screw hole 28 of the device end portion 27, which is the device-side mounting portion. has been described, but is not limited to this. In other words, the fixture only needs to restrict the movement of the mounting member 44, which is the lamp-side mounting part, with respect to the fixture end part 27, which is the fixture-side mounting part. is.

In Embodiment 1, as an example of the attachment portion on the side of the lighting device 2, the fixture end portion 27 formed by bending the end portion in the longitudinal direction X of the fixture body 20 has been described. Not limited. As for the mounting portion on the side of the lighting fixture 2, a fixture mounting member, which is a separate member from the fixture body 20, may be attached to the end of the fixture body 20 in the longitudinal direction X using screws, rivets, or the like. It may be attached by tightening or the like.

Further, in Embodiment 1, the fixture such as the mounting screw 48 is used to connect the mounting member 44, which is the lamp-side mounting portion, to the fixture end portion 27, which is the fixture-side mounting section. The connection structure between 2 and lamp 3 is not limited to this. The lamp-side mounting portion and the fixture-side mounting portion may be configured to be connected by engaging each other. For example, an engaging piece that is elastically deformable is provided on either the lamp-side mounting portion or the fixture-side mounting portion, and the engaging piece is provided in a portion facing the engaging piece of either the lamp-side mounting portion or the fixture-side mounting portion. You may provide the engaging part which fits. In this case, the lamp fixture 3 can be engaged with the lighting fixture 2 by fitting the engagement piece into the engagement portion. Then, when removing the lamp 3 from the lighting fixture 2, it is preferable to provide a structure in which the engagement can be released by inserting the tip of a screwdriver or the like into the engaging portion in which the engaging piece is fitted. With such a configuration, the construction time for attaching the lamp 3 to the lighting fixture 2 can be shortened, and the fixing tools such as the attachment screw 48 can be prevented from being lost.

As shown in FIG. 5 , before the lamp 3 is fixed to the lighting fixture 2 , the lamp 3 is connected to the lighting fixture 2 by the hanger 59 . One end of the hanger 59 is connected to the locking portion 29 formed on the lighting fixture 2, and the other end is connected to the mounting member 44, which is the fixture-side mounting section attached to the ends 3A and 3B of the lamp 3. It is With this configuration, the lighting device 1 can be suspended and supported without dropping the lighting device 3 when the lighting device 3 is removed from the lighting device 2 .

(Lamp 3)
The lighting fixture 3 constitutes the lighting device 1 by being attached to the lighting fixture 2 . As shown in FIG. 2(b), the lamp 3, which is also called a lighting fixture or a light source unit, is formed in an elongated shape and is attached to the lighting fixture 2 for use. In Embodiment 1, the lighting device 3 is attached to the device end portion 27 of the lighting device 2 using mounting screws 48 at both end portions in the longitudinal direction X of the lighting device 2 . As shown in FIGS. 2 and 3, the lamp 3 of Embodiment 1 mainly includes a translucent cover 30, an end cover 40, a sealing member 43, a light emitting part 60, and the like.

(translucent cover 30)
A translucent material that transmits at least visible light is used for the translucent cover 30 . As shown in FIG. 3, it is a cylindrical outer shell that accommodates and protects the mounting member 50, the light emitting part 60, the control part 80, etc. in the internal space. The translucent cover 30 can be made of glass, polycarbonate, or a resin material such as acrylic. In addition, the portion of the translucent cover 30 exposed to the outside also serves as an appearance design portion. The translucent cover 30 of Embodiment 1 can be manufactured, for example, by cutting a tubular member molded by extrusion into a required length according to product specifications and the like.

In the lamp 3 of Embodiment 1, as shown in FIG. 1, the part of the translucent cover 30 that is exposed to the outside serves as an outline that covers the irradiation side of the light emitting part 60 and the pedestal 51 . Here, in a cross section perpendicular to the X direction, the translucent cover 30 has a substantially rectangular tubular shape. Specifically, the cross-sectional shape of the light-transmitting cover 30 is trapezoidal with the upper base on the irradiation side and the lower base on the lighting device 2 side. Further, the translucent cover 30 has a shape in which four planes are connected by curved surfaces. As shown in FIG. 3, the translucent cover 30 includes a main surface portion 31 that is a surface from which light is emitted, a rear surface portion 33 that is a surface on the lighting fixture 2 side, and a main surface portion 31 and a rear surface portion. 2, two cover sides 32 connecting between 33; The translucent cover 30 is configured by connecting adjacent portions of the main surface portion 31, the two cover side portions 32, and the rear portion 33 by curved surfaces or the like. All or part of the four planes forming the translucent cover 30 may be curved. Moreover, the cross-sectional shape of the translucent cover 30 may be a circular shape including an ellipse, or may be a polygonal cylindrical shape with three or more. The translucent cover 30 may have light diffusing properties, wavelength discriminating properties, etc. according to product specifications and the like. In addition, the portion of the translucent cover 30 that is not exposed to the outside may be formed using a material having reflectivity, light shielding property, or the like.

FIG. 6 is an exploded perspective view of one end 3A of the lamp 3 according to Embodiment 1. FIG. 7 is a cross-sectional view along the longitudinal direction X at one end 3A of the lamp 3 according to Embodiment 1. FIG. The translucent cover 30 has an opening formed at an end portion 36 in the first direction along the longitudinal direction X of the mounting member 50 . The translucent cover 30 covers the light emitting surface of the light emitting element 61 arranged on the mounting member 50 . The translucent cover 30 is an elongated hollow body with at least one end 36 open, and is an outer shell that accommodates the substrate 62 on which the light emitting element 61 is mounted.

The end faces 35 are end faces at both ends in the longitudinal direction X of the translucent cover 30 . The translucent cover 30 has a cylindrical shape with an opening 39 on the end face 35 . A portion including the end surface 35 of the translucent cover 30 is called an end portion 36 . The end portion 36 is a portion to which the end cover 40 and the sealing member 43 are fitted, and is a portion covered by the end cover 40 which is an end lid. The end surface 35 is a free end that is movable along the first direction, which is the longitudinal direction X, along with the end cover 40 as the translucent cover 30 expands and contracts. Strictly speaking, the light-transmitting cover 30 expands and contracts in directions other than the "longitudinal direction X". It has a lamp telescoping structure 100 that allows

The translucent cover 30 is fitted to the end cover 40 with the sealing member 43 interposed therebetween. That is, it is the sealing member 43 that is directly fitted to the end portion 36 of the translucent cover 30 . As described above, the translucent cover 30 is formed in a tubular shape, and is configured so that the end cover 40 is fitted around the peripheral edge of the tubular opening 39 . As shown in FIG. 6, the outer peripheral portion 37 of the translucent cover 30 is the outer surface side of the cylindrical outer shell. In addition, the inner peripheral portion 38 is the inner surface side of the outer shell.

(End cover 40)
End covers 40 that are end lids are attached to both ends in the longitudinal direction X of the translucent cover 30 . The end cover 40 is attached to the translucent cover 30 while covering at least a portion of the opening formed in the end 36 of the translucent cover 30 and the end 36 . In other words, the end cover 40 is attached to the translucent cover 30 while covering the end surface 35 of the translucent cover 30 where the opening 39 is formed. The end cover 40 is attached to the translucent cover 30 so as to press a sealing member 43 made of an elastic member against the end 36 . An end cover 40 that is an end lid is attached to the end 36 of the translucent cover 30 so as to sandwich a sealing member 43 that is an elastic member between the end cover 40 and the end 36 . That is, by fitting the sealing member 43 to the end portion 36 of the translucent cover 30 and fitting the end portion cover 40 to the end portion 36 of the translucent cover 30 with the sealing member 43 interposed therebetween, The inside of the translucent cover 30 has a closed structure.

Here, the mounting member 50 and the light-transmitting cover 30 attached to the end cover 40 may be deformed particularly in the longitudinal direction X due to the ambient temperature of the lighting device 1 and the temperature change between when the lamp 3 is turned on and when the lamp 3 is turned off. Stretch. The mounting member 50 and the translucent cover 30 are different in the amount of expansion and contraction. The end cover 40 has a structure in which the ends of the light-transmitting cover 30 and the mounting member 50 in the longitudinal direction X are movable relative to each other while keeping the inside of the light-transmitting cover 30 sealed.

(sealing tool 43)
The sealing members 43 are elastic seals arranged at both ends in the longitudinal direction X of the translucent cover 30 in a state of being sandwiched between both ends in the longitudinal direction X of the translucent cover 30 and the end covers 40 . It is a member. A sealing member 43 , which is an elastic member, is attached to the end portion 36 of the translucent cover 30 and closes the opening 39 of the end surface 35 . The sealing member 43 is made of, for example, a resin material, and is an elastically deformable seal member (gasket, packing, etc.). Therefore, the sealing member 43 seals both ends of the translucent cover 30 in the longitudinal direction X while being sandwiched between both ends of the translucent cover 30 in the longitudinal direction X and the end covers 40 . . The sealing member 43 is made of a resin material so as to be elastically deformable, and is tightly attached to each of the translucent cover 30 and the end cover 40 .

The closure 43 has a closure main portion 430 , a closure inner peripheral portion 435 , a closure outer peripheral portion 437 , and a connecting portion 436 . The closure main portion 430, the closure inner peripheral portion 435, the closure outer peripheral portion 437, and the connection portion 436 are integrally formed. The closure main portion 430 is formed so as to close the inner portion of the closure inner peripheral portion 435 formed in a cylindrical shape. The closure main portion 430 is sandwiched between the fixed wall 56 of the fixed portion 54 and the second cover main portion 420 of the second end cover 42 . The closure main portion 430 is formed in a plate shape, and in the state in which the closure 43 and the end cover 40 are fitted together, the surface facing the end cover 40 in the longitudinal direction X has: An electric wire insertion portion 431 and a sealing member cylindrical portion 433 are formed.

The closure main portion 430 contacts the second cover main portion 420 of the second end cover 42 when the closure 43 and the end cover 40 are combined. As shown in FIG. 6, the wire insertion portion 431 protrudes from the side facing the end cover 40 in the longitudinal direction X in the state in which the sealing member 43 and the end cover 40 are combined. The wire insertion part 431 forms a wire insertion hole 432 through which the power line 81, the ground line 82 and the control line 83 are passed. Two sealing member tubular portions 433 are provided with the wire insertion portion 431 interposed therebetween. Note that the number of sealing member cylindrical portions 433 to be formed may be one or three or more as long as the number is greater than or equal to the number of fixing walls 56 of the fixing portion 54 . The sealing member cylindrical portion 433 protrudes toward the surface facing the end cover 40 when the sealing member 43 and the end cover 40 are combined. The boss portion 57 protruding from the fixing wall 56 of the fixing portion 54 is inserted into the sealing member cylindrical portion 433 when the sealing member 43 and the fixing portion 54 of the mounting member 50 are combined. In Embodiment 1, the sealing member tubular portion 433 is formed in a cylindrical shape so that the boss portion 57 provided on the mounting member 50 can be inserted. A screw insertion hole 434 is formed at the tip of the sealing member cylindrical portion 433 so that the fixing screw 75 can be screwed to the boss portion 57 .

A closure inner peripheral portion 435 is formed on the periphery of the closure main portion 430 formed in a plate shape. The closure inner peripheral portion 435 extends from the peripheral edge of the closure main portion 430 toward the end cover 40, that is, in the direction of X1. The inner peripheral portion 435 of the sealing member is formed between the inner wall portion 425 of the second end cover 42 and the translucent cover 30 when the sealing member 43 is combined with the second end cover 42 and the translucent cover 30 . It is a portion sandwiched between the end portion 36 and the inner peripheral portion 38 .

A closure outer peripheral portion 437 of the closure 43 is formed in an annular shape and arranged outside the closure inner peripheral portion 435 so as to face the closure inner peripheral portion 435 . When the sealing member 43 is combined with the end cover 40 and the translucent cover 30 , the outer peripheral portion 437 of the sealing member is in contact with the outer wall portion 419 of the first end cover 41 that constitutes the end cover 40 . It is a portion that is sandwiched between the outer peripheral portion 37 of the protective cover 30 .

The connecting portion 436 of the closure 43 is located between the closure inner circumference 435 and the closure outer circumference 437 . The connecting portion 436 connects the X1 side end of the sealing member inner peripheral portion 435 and the X1 side end of the sealing member outer peripheral portion 437 . The connecting portion 436 connects the first cover main portion 410 of the first end cover 41 and the end face 35 of the translucent cover 30 in a state in which the sealing member 43 is combined with the end cover 40 and the translucent cover 30 . It is the part sandwiched between

As shown in FIG. 7, the end portion 36 of the translucent cover 30 is inserted into a groove-like insertion portion 439 formed by an inner peripheral portion 435 of the closure, an outer peripheral portion 437 of the closure, and a connecting portion 436. and mates with the closure 43 .

(Mounting member 44)
The mounting member 44 is part of the lamp 3 and is connected to the fixture end 27 of the lighting fixture 2 . The mounting members 44 are provided at both ends in the longitudinal direction X of the lamp 3 . The mounting member 44 is also referred to as a lamp fixture side mounting portion for mounting the lamp fixture 3 to the lighting fixture 2 . The surface of the mounting member 44 facing the central side of the lamp 3 in the longitudinal direction X, i.e., the surface facing the X2 side, is in contact with the end surface of the boss portion 57 of the mounting member 50, and is secured to the fixing portion 54 using two fixing screws 75. fixed to The mounting member 44 is not directly fixed to the end cover 40 using screws or the like. The mounting member 44 is fixed to the boss portion 57 of the fixing portion 54 of the mounting member 50 . The end cover 40 and the sealing member 43 are fitted to the boss portion 57 of the mounting member 50 , and movement in the X direction is restricted between the mounting member 44 and the fixed wall 56 of the mounting member 50 . In other words, the mounting member 44 and the mounting member 50 and the sealing member 43 and the end cover 40 are indirectly fixed. fluctuates.

The mounting member 44 is arranged outside the end cover 40 in the first direction, which is the longitudinal direction X of the lamp 3, and is fixed to the mounting member 50, which partially penetrates the end cover 40, and the other. is fixed to the lighting fixture 2. In Embodiment 1, the mounting member 44 is formed by bending a metal plate. However, the mounting member 44 is not limited to being formed by bending a metal plate material, and may be formed using other materials such as resin, ceramic, etc., extrusion molding, It may be formed by other methods such as additive manufacturing.

The mounting member 44 is a lamp-side mounting portion that functions as a mounting mechanism for the lamp 3 of the lighting device 1 , and is a portion that is attached to the fixture end portion 27 that is the fixture-side mounting portion of the lighting fixture 2 . The instrument end portion 27 is formed with a mounting screw insertion hole 451 through which the mounting screw 48 as a fixture is inserted. Although the mounting screw insertion hole 451 in Embodiment 1 is a through hole, it may be in another form such as a notch.

As shown in FIG. 7, the mounting member 44 has a contact portion 46 that contacts the construction portion 9 such as a ceiling surface or a wall surface when the lamp 3 is attached to the lighting fixture 2 . The contact portions 46 are formed to protrude from both ends of the mounting member 44 in the lateral direction Y toward the instrument side (upward Z1). The contact portion 46 includes a projecting portion 460 projecting upward Z1 from the mounting member 44 . Further, the contact portion 46 includes a bent portion 461 formed by bending the distal end portion of the projecting portion 460 on the construction portion 9 side, and an inclined portion 462 obliquely extending from the bent portion 461 toward the X2 side. A tip of the inclined portion 462 is referred to as a tip portion 463 .

With such a configuration, when the lighting fixture 3 is attached to the lighting fixture 2, the mounting attitude of the lighting fixture 3 can be determined based on the construction section 9 regardless of the installation state of the lighting fixture 2 with respect to the construction section 9. can be done. Therefore, the lighting fixture 3 can maintain a desired posture with respect to the construction portion 9 .

As shown in FIG. 1 , the abutting portions 46 are provided in pairs in the lateral direction Y of the lamp 3 with a mounting screw 48 for fixing the mounting member 44 to the lighting fixture 2 interposed therebetween. Therefore, when the mounting screw 48 is screwed into the screw hole 28 of the fixture end portion 27 , it is possible to restrict the rotation of the lamp 3 around the axis of the mounting screw 48 .

As shown in FIG. 4 , in the longitudinal direction X of the lamp 3 , the mounting members 44 provided at both ends of the lamp 3 are positioned outside the device end 27 . The mounting member 44 guides the fixture end 27 when the lamp 3 is attached to the lighting fixture 2 . With the lamp 3 attached to the lighting fixture 2 , the mounting member 44 is restricted from moving relative to the fixture end 27 .

(wiring)
As shown in FIGS. 5 and 6 , the mounting member 44 is positioned to fit into the mounting member placement portion 412 formed on the first end cover 41 of the end cover 40 . The mounting member arrangement portion 412 is a concave portion formed in the first end cover 41 forming the X1 side surface of the end cover 40 . A first cover through-hole 411 is formed in the central portion of the mounting member placement portion 412 , which is a wire insertion hole through which wires such as the power wire 81 , the ground wire 82 , and the control wire 83 are passed. Further, a recess is formed in the peripheral portion of the first cover through-hole 411 of the mounting member placement portion 412 . A gap is formed between the mounting member 44 and the first end cover 41 when the mounting member 44 is disposed in the mounting member mounting portion 412 . Electric wires such as the power supply line 81 , the ground line 82 , and the control line 83 that have passed through the first cover through hole 411 pass through the gap between the mounting member 44 and the first end cover 41 and reach the upper surface side of the lamp 3 . pulled out. An electric wire extending from the control unit 80 inside the lamp 3 is pulled out of the lamp 3 by the structure described above and connected to an external power supply or the like.

(Mounting member 50)
The mounting member 50 is a member for fixing the light emitting section 60, the control section 80 and the like in the space inside the translucent cover 30, as shown in FIG. The mounting members 50 are members fixed to the mounting members 44 attached to both ends of the lamp 3 . The mounting member 50 has a pedestal 51 and a fixing portion 54 . The mounting member 50 is housed inside the translucent cover 30 . The mounting member 50 is fixed to the mounting member 44 by a fixing screw 75, as shown in FIGS. Therefore, the mounting member 50 is not directly fixed to the translucent cover 30 . The mounting member 50 is connected to the translucent cover 30 via the end cover 40 and the sealing member 43 fitted to the mounting member 50 .

The pedestal 51 is a main part of the mounting member 50, and the light emitting section 60, the control section 80, and the like are mounted thereon. In Embodiment 1, the pedestal 51 is formed by bending a metal plate. However, the pedestal 51 is not limited to one formed by bending a metal plate material. It may be formed by other methods such as lamination molding. Although not shown, the pedestal 51 is surface-treated or a functional member is laid on the pedestal 51 in order to improve heat radiation efficiency (thermal emissivity) or light utilization efficiency (reflectance). You may The pedestal 51 has a mounting surface portion 52 and side portions 53 . The mounting surface portion 52 of the pedestal 51 is formed in a long flat plate shape, and the light emitting portion 60 is mounted on the surface on the irradiation side. In addition, a control section 80 such as a power supply device is attached to the back surface, which is the instrument side surface.

As shown in FIG. 6, fixing portions 54 are formed at both ends of the base 51 in the longitudinal direction X. As shown in FIG. The fixed portion 54 is formed with a notch portion 521 through which the power supply line 84 and the like are passed. The notch portions 521 are formed in the central portion of the fixed wall 56 erected in the Z2 direction from the edge portion of the mounting surface portion 52 at both ends in the longitudinal direction X of the mounting surface portion 52 .

Side portions 53 of the pedestal 51 are standing portions that are bent from both ends of the mounting surface portion 52 in the short direction Y toward the irradiation side. The side portion 53 is erected from the edge portion of the mounting surface portion 52 along the longitudinal direction X of the mounting surface portion 52 , thereby improving the rigidity of the base 51 . In Embodiment 1, the side portion 53 is erected only on the instrument side where the control portion 80 and the like are arranged. However, the side portion 53 may be erected only on the irradiation side where the light emitting portion 60 is arranged, or may be erected on both the irradiation side and the instrument side. In Embodiment 1, the side portions 53 are erected at both ends of the mounting surface portion 52 in the transverse direction Y. It may be set up at the position of

The fixing portions 54 are arranged at both ends of the base 51 in the longitudinal direction X, and are members for fixing the mounting member 50 to the mounting member 44 . The fixed portion 54 includes a boss portion 57 that passes through the closure 43 and the end cover 40 . The mounting member 44 is fixed to the tip surface of the boss portion 57 . Here, in Embodiment 1, the fixing portion 54 is configured integrally with the pedestal 51, but the configuration of the fixing portion 54 is not limited to this configuration. For example, the pedestal 51 and the fixed portion 54 may be formed separately, and the fixed portion 54 may be attached to the pedestal 51 using a fixing member such as a mounting screw (not shown).

Attachment portions 55 of the fixing portion 54 are portions for attaching the fixing portion 54 to the base 51 , and are fixed to both end portions of the base 51 using fixing screws 75 . The attachment portion 55 may be structurally integrated with the pedestal 51 by, for example, caulking, welding, or fitting (engaging).

The boss portion 57 of the fixing portion 54 passes through the sealing member tubular portion 433 of the sealing member 43 and is fitted therewith. That is, the sealing member 43 is fitted to the boss portion 57 and positioned. The end cover 40 is supported by the mounting member 50 via the sealing member 43 , and the translucent cover 30 is supported by the mounting member 50 via the sealing device 43 .

The boss portion 57 is attached to the fixed portion 54 by, for example, caulking, welding, or fitting (engaging). A screw hole 58 into which a fixing screw 75 is screwed is formed in the boss portion 57 . A screw groove is formed on the inner peripheral side of the screw hole 58 . A fixing screw 75 is inserted through the screw hole 58 from the outside of the mounting member 44 . A fixing screw 75 is screwed into the screw hole 58 of the boss portion 57 to fix the mounting member 44 to the fixing portion 54 of the mounting member 50 . That is, it is the boss portion 57 of the fixing portion 54 that the mounting member 44 is fixed.

(Light emitting unit 60)
As shown in FIGS. 3 and 7, the light emitting section 60 has a light emitting element 61, a substrate 62, and the like. The light emitting element 61 emits light by power supply. In Embodiment 1, light emitting diodes (hereinafter referred to as LEDs) are used as the light emitting elements 61, and are arranged along the longitudinal direction X on the mounting surface of the substrate 62 in rows, zigzags, or the like. is implemented in The light-emitting element 61 of Embodiment 1 is packaged by arranging a phosphor that converts the wavelength of blue light into yellow light on an LED chip that emits blue light with a wavelength of 440 to 480 [nm]. It is a pseudo-white LED element that is a surface mount component. Here, the light emitted from the light emitting element 61 has the maximum luminous flux value and spreads symmetrically by the illumination angle α with respect to the optical axis L perpendicular to the light emitting surface. In Embodiment 1, it is assumed that the irradiation angle α of the light emitting element 61 is 120 degrees. A solid state laser, a semiconductor laser, an organic EL (Electro Luminescence), an inorganic EL, or the like may be used as the light emitting element 61 . The substrate 62 may be a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper epoxy substrate (FR-3), a paper phenol substrate (XPC), a metal base substrate, or the like.

The control unit 80 is a power supply device, converts power supplied from the outside into power for lighting the light emitting element 61 , and supplies the power to the light emitting element 61 . In Embodiment 1, as described above, the control unit 80 is attached to the back surface of the mounting surface portion 52 of the pedestal 51 using a fixing member such as a screw (not shown). It is housed inside a cylindrical translucent cover 30 . However, the controller 80 may be attached to the lighting device 2 instead of the lamp device 3 . In this case, the electric wire is a power supply line that functions as a supply path for power supplied from the control unit 80 to the light emitting element 61 . One ends of the electric wires such as the power line 81 , the ground line 82 and the control line 83 in Embodiment 1 are connected to the control unit 80 . The other end is connected to a terminal block (not shown) attached to the lighting fixture 2 .

(Details of end cover 40)
8 and 9 are cross-sectional views illustrating the structure around the end cover 40 of the lighting device 1 according to Embodiment 1. FIG. As shown in FIGS. 6 and 7, the end cover 40 has a first end cover 41 forming an external appearance and a second end cover 42 forming an internal structure. A second end cover 42 is disposed within the first end cover 41 . That is, the end cover 40 is configured by integrating a plurality of parts. Here, the first end cover 41 and the second end cover 42 of Embodiment 1 are described as being formed using a resin material. However, the material of the first end cover 41 and the second end cover 42 is not limited to the resin material. It may be formed using a metal material other than a resin material, a ceramic material, or the like. Further, in Embodiment 1, the first end cover 41 and the second end cover 42 are formed as separate members and are fitted together to be integrated. You may make it

The first end cover 41 has a first cover main portion 410 , an outer wall portion 419 forming the outer peripheral portion of the end cover 40 , and a cover wire holding portion 416 provided on the upper surface of the outer wall portion 419 . . The first cover main portion 410 is a plate-shaped portion and serves as the outer end portion of the lamp 3 . As shown in FIG. 7, the first cover main portion 410 forms the outer end portion of the lamp 3, and when the translucent cover 30, the sealing member 43, and the end cover 40 are combined, In the first direction, which is the longitudinal direction X, it is arranged outside the end portion 36 of the translucent cover 30, that is, in the direction of X1.

The outer wall portion 419 is formed as a circumferential wall that rises in the direction of X2 from the peripheral edge of the first cover main portion 410, which is the outer end portion. The first end cover 41 includes a first cover main portion 410 which is the outer end portion of the lamp 3 in the X direction, and an outer wall portion surrounding the end portion 36 of the translucent cover 30 from the outside in the direction crossing the X direction. 419. The outer wall portion 419 extends in a second direction crossing the first direction, which is the longitudinal direction X, in a state in which the light-transmitting cover 30, the sealing member 43, and the end cover 40 are combined. located outside the end 36 of the . Here, the second direction is all directions intersecting with the longitudinal direction X including the lateral direction Y and the vertical direction Z.

The cover wire holding portion 416 is formed on the upper surface portion of the outer wall portion 419 . The cover wire holding portion 416 protrudes upward (Z1 direction) from the outer wall portion 419 . The cover wire holding portion 416 electrically connects a terminal block (not shown) provided in the lighting device 2 and the control portion 80 to supply external power to the control portion 80 , the power line 81 , and the potential of the lighting device 3 . A ground line 82 to be set, a control line 83 for controlling the control unit 80 from the outside, and the like are held.

The outer wall portion 419 is a side wall formed on the peripheral portion of the first cover main portion 410 and is formed from the lower surface to the upper surface of the peripheral portion of the first cover main portion 410 . The outer wall portion 419 is a portion that sandwiches the sealing member 43 and the end portion 36 of the translucent cover 30 and is fitted to the end portion 36 of the translucent cover 30 .

A first cover through hole 411 and a mounting member arrangement portion 412 are formed in the first cover main portion 410 of the first end cover 41 . In the state in which the end cover 40, the sealing member 43, and the mounting member 50 are combined, the sealing member cylindrical portion 433 and the boss portion 57 are inserted through the first cover through hole 411. As shown in FIG. In Embodiment 1, the mounting member arrangement portion 412 is formed as a recess around the first cover through hole 411 of the first cover main portion 410, and the mounting member 44 is arranged.

The second end cover 42 is combined with the first end cover 41 to form the end cover 40 . The second end cover 42 is arranged inside the first end cover 41 in combination with the first end cover 41 . The opening formed by the inner wall portion 425 of the second end cover 42 is mated to face the opening formed by the outer wall portion 419 of the first end cover 41 . In the end cover 40, the first cover main portion 410 of the first end cover 41 and the second cover main portion 420 of the second end cover 42 constitute walls facing each other.

The second end cover 42 has a second cover main portion 420 and an inner wall portion 425 . The second cover main portion 420 is a plate-like member, and faces and contacts the closure main portion 430 of the closure 43 when the end cover 40 and the closure 43 are combined. The second cover main portion 420 is formed at the end of the inner wall portion 425 of the end cover 40 on the X2 side, and extends in the first direction, which is the longitudinal direction X of the lamp 3 , to the first cover main portion 420 of the end cover 40 . It constitutes the surface opposite to the portion 410 . That is, the second cover main portion 420 of the second end cover 42 has an end surface facing the X2 side of the end cover 40 and constitutes an inner end located inside the outer wall portion 419 . In addition, the inner wall portion 425 of the second end cover 42 constitutes an inner wall portion facing the outer wall portion 419 of the end cover 40 in a direction crossing the X direction.

The inner wall portion 425 is a side wall formed to extend in the X1 direction from the peripheral portion of the second cover main portion 420 . The inner wall portion 425 faces the outer wall portion 419 of the end cover 40 with the sealing member outer peripheral portion 437 of the sealing member 43 and the end portion 36 of the translucent cover 30 interposed therebetween. The inner wall portion 425 is an end portion located inside the end portion 36 of the light-transmitting cover 30 in the second direction when the light-transmitting cover 30, the sealing member 43, and the end cover 40 are combined. It is part of cover 40 .

An end cover insertion portion 421 is formed in the second end cover 42 . The end cover insertion portion 421 includes a wire insertion portion 431 formed in the closure main portion 430 of the closure 43 and a closure cylinder formed in the closure main portion 430 of the closure 43 . The shaped portion 433 is inserted therethrough. In addition, in the state where the end cover 40, the sealing member 43, and the mounting member 50 are combined, the sealing member tubular portion 433 and the boss portion 57 of the mounting member 50 are attached to the end cover insertion portion 421. is inserted. An insertion wall 421 a is formed along the edge forming the end cover insertion portion 421 . The insertion wall 421 a is a peripheral wall formed along the edge of the end cover insertion portion 421 and formed to face the inner wall portion 425 . When the end cover 40, the sealing member 43, and the mounting member 50 are combined, the insertion wall 421a abuts on the sealing member tubular portion 433 through which the boss portion 57 is inserted.

(Lamp telescopic structure 100)
10A and 10B are enlarged schematic diagrams for explaining the lamp extension/contraction structure 100 of the lamp 3 according to the first embodiment. The lamp 3 has an end cover 40 , a sealing member 43 and a translucent cover 30 . The end cover 40 has a first cover main portion 410 that is an outer end arranged outside the sealing member 43 in the first direction, which is the longitudinal direction X of the lamp 3 . The end cover 40 also has an outer wall portion 419 arranged outside the end portion 36 in a second direction intersecting the first direction, which is the longitudinal direction X. As shown in FIG. As shown in FIG. 10, in Embodiment 1, an outer wall portion inner surface 4190, which is the inner peripheral surface of the outer wall portion 419, is given an inclination angle θ1 required for normal resin molding. The inclination angle θ1 is a draft taper with an inclination angle θ1≈1°, and is inclined outward with respect to the reference line T along the longitudinal direction X. As shown in FIG.

The end cover 40, in a state in which the light-transmitting cover 30, the sealing member 43, and the end cover 40 are combined, extends from the end 36 in a second direction intersecting the first direction, which is the longitudinal direction X. It has an inner wall portion 425 disposed inside.

The sealing member 43, which is an elastic member, is sandwiched between the end portion 36 of the translucent cover 30 and the first cover main portion 410, the outer wall portion 419, and the inner wall portion 425, which are outer end portions. More specifically, the sealing member 43, which is an elastic member, is attached to the outer peripheral portion of the sealing member 43 when the translucent cover 30, the sealing member 43, and the end cover 40 are combined. 437 is attached to the end portion 36 of the translucent cover 30 while being sandwiched between the end portion 36 and the outer wall portion 419 . In addition, the sealing member inner peripheral portion 435 of the sealing member 43, which is an elastic member, is attached to the end portion 36 of the translucent cover 30 while being sandwiched between the end portion 36 of the translucent cover 30 and the inner wall portion 425. It is That is, the sealing member 43, which is an elastic member, is in close contact with the end portion 36, the second cover main portion 420, which is the inner end portion, the outer wall portion 419, and the inner wall portion 425. attached to the That is, the sealing member outer peripheral portion 437 of the sealing member 43 is sandwiched between the outer wall portion 419 of the end cover 40 and the outer peripheral surface of the end portion 36 of the translucent cover 30, and the sealing member 43 is sealed. The tool inner peripheral portion 435 is sandwiched between the inner wall portion 425 of the end cover 40 and the inner peripheral surface of the end portion 36 of the translucent cover 30 . Thereby, the sealing member 43 seals the opening 39 formed in the end surface 35 of the translucent cover 30 .

The inner wall portion outer surface 4250 is the outer peripheral surface of the inner wall portion 425 and forms an inclined surface as a first inclined portion. The inner wall portion outer surface 4250, which is the first inclined portion, intersects the first direction (longitudinal direction X) in the first direction (longitudinal direction X) from the second cover main portion 420 toward the first cover main portion 410. It is inclined so that the distance from the end portion 36 of the translucent cover 30 increases in the second direction. That is, the inner wall portion 425 is formed with an inner wall portion outer surface 4250 that is a first inclined portion that is inclined so that the distance from the end portion 36 in the second direction increases toward the direction of X1. In other words, the inner wall portion outer surface 4250 intersects the first direction (longitudinal direction X) in the first direction (longitudinal direction X) from the first cover main portion 410 toward the second cover main portion 420 . It is inclined so that the distance from the end portion 36 becomes smaller in the second direction. That is, the inner wall portion 425 has a first inclined portion that is inclined such that the distance from the end portion 36 in the second direction decreases toward the center from the end portion 36 of the translucent cover 30 in the first direction. An inner wall outer surface 4250 is formed.

The inclination angle θ2 of the inner wall portion outer surface 4250 with respect to the reference line T along the longitudinal direction X satisfies the inclination angle θ2>0°, preferably the inclination angle θ2≧the inclination angle θ1. When the inclination angle θ2=the inclination angle θ1, the distance between the outer wall portion 419 and the inner wall portion 425 in the second direction is are the same.

(Assembly of lamp fixture 3)
When assembling the lamp 3, usually, first, the sealing member 43 is attached to the end portion 36 of the translucent cover 30, and then the end cover 40 is attached to the translucent cover 30 with the sealing member 43 sandwiched therebetween. The order of attachment to the end 36 of the is typical. At this time, the translucent cover 30 is arranged between the inner peripheral surface 4352 and the outer peripheral inner peripheral surface 4372 of the sealing member 43 . For example, when assembling the lamp 3, the sealing member 43 fitted in the end cover 40 is difficult to come off.

Since there are more options for the mounting (fitting) method and procedure of the sealing member 43 when assembling the lamp 3, the lamp 3 can be assembled by various procedures. In Embodiment 1, inner wall portion outer surface 4250 is formed over the entire circumference of inner wall portion 425 . The second direction is all directions (360°) crossing the first direction (longitudinal direction X). In addition, the inner wall outer surface 4250 forming the inclined portion need not be provided on the entire outer peripheral surface of the inner wall 425 , and may be provided on at least a part of the outer peripheral surface of the inner wall 425 . Here, the portion of the outer peripheral surface of the inner wall portion 425 may be either a portion in the first direction (longitudinal direction X) or a portion in the circumferential direction. The inner wall portion outer surface 4250 may be provided at one location on the inner wall portion 425, or may be provided at a plurality of locations.

(Sealing of ends of lamp 3)
The lamp expandable structure 100 also has a function of sealing the space inside the translucent cover 30 at the ends 3A and 3B of the lamp 3 . As described above, the sealing member 43, which is an elastic member, is sandwiched between the end portion 36 of the translucent cover 30 and the first cover main portion 410, the outer wall portion 419, and the inner wall portion 425, which are the outer end portions. It is attached to the end portion 36 of the translucent cover 30 in a folded state. The inner wall portion 425 has a first inclined portion that is inclined such that the distance from the end portion 36 in the second direction increases from the center of the translucent cover 30 toward the end portion 36 in the first direction. An inner wall outer surface 4250 is formed. The inner wall portion 425 has an inner wall outer surface 4250, and the inclination of the inner wall outer surface 4250 makes it difficult for the seal 43, which is an elastic member fitted in the end cover 40, to come off.

The inner peripheral surface 4350 of the sealing member 43 faces and abuts the inclined inner wall outer surface 4250 when the first end cover 41, the second end cover 42 and the sealing member 43 are combined. , is the part that is in close contact. The inner peripheral inner peripheral surface 4350 of the closure 43 is in surface contact with the inner wall outer surface 4250 of the inner wall 425 in the combined state of the first end cover 41, the second end cover 42 and the closure 43. . Therefore, the movement of the inner peripheral surface 4350 of the sealing member 43 is restricted by the inclination of the outer surface 4250 of the inner wall portion. Therefore, even if a force is applied to the translucent cover 30 to which the sealing member 43 is in close contact with the end cover 40, which is the direction of X2, the sealing member 43 is It is difficult to remove from the cover 40 . If the sealing member 43 were to move in the direction in which the sealing member 43 is removed from the end cover 40 (inward direction X2, which is the right direction in FIG. 8), the sealing member 43 would move toward the end portion 36 of the translucent cover 30 (in FIG. Move upward Z1). Therefore, the sealing member 43 has a high degree of adhesion between the light-transmitting cover 30 and the end cover 40 and the sealing member 43 , and is difficult to come off from the end cover 40 . More specifically, when the sealing member 43 tries to move in the direction in which the sealing member 43 is pulled out of the end cover 40, the lamp 3 and the lamp expansion/contraction structure 100 will be displaced from the end 36 of the translucent cover 30 and the inner wall portion outer surface of the end cover 40. 4250 , the inner surface 4190 of the outer wall, and the outer peripheral surface 4370 of the sealing member 43 are in close contact with each other. Therefore, in the lamp 3 and the lamp expandable structure 100 , the translucent cover 30 and the sealing member 43 are difficult to come off from the end cover 40 .

In addition, the end cover 40 has the shape described above, and the amount of elastic deformation of the outer peripheral portion 437 of the sealing member 43 is on the side where rainwater infiltrates rather than on the connecting portion 436 side. Since the side of the sealing member main portion 430 is relatively smaller, the lamp 3 can easily maintain the waterproof property. Further, the translucent cover 30, the end cover 40, and the sealing member 43 are in close contact with each other, so that the lamp 3 maintains its waterproof property. More specifically, the end portion 36 of the translucent cover 30, the inner wall portion outer surface 4250 and the outer wall portion inner surface 4190 of the end cover 40, and the sealing member 43 are in close contact with each other, so that the lamp 3 is kept waterproof. be.

The end cover 40 may be configured such that the distance between the outer wall portion 419 and the inner wall portion 425 in the second direction is the same in the first direction. That is, the tilt angle θ1 described above may be set to be the same as the tilt angle θ2. In this case, since the inclination of the outer wall inner surface 4190 and the inclination of the inner wall outer surface 4250 are at the same angle, the closure 43 engages the closure 43 and the end cover 40 when assembled with the end cover 40 . make it easier to

In addition, the inclination angle of the outer wall inner surface 4190 and the inner wall outer surface 4250 may be changed. For example, the inner surface 4190 of the outer wall is inclined toward the end 36 of the translucent cover 30 toward the X2 side, and the outer surface 4250 of the inner wall is inclined toward the end 36 of the translucent cover 30 toward the X2 side. You can move away from Alternatively, both the inclination of the inner wall portion inner surface 4190 and the inclination of the inner wall portion outer surface 4250 may be made to approach the end portion 36 of the translucent cover 30 toward the X2 side. Then, the inclination of the outer peripheral surface 4370 of the sealing member 43 is matched with the inclination of the inner surface 4190 of the outer wall, and the inclination of the inner peripheral surface 4350 of the sealing member 43 is matched with the slope of the outer surface 4250 of the inner wall. good. Even with this configuration, the end portion 36 of the translucent cover 30, the inner wall portion outer surface 4250 and the outer wall portion inner surface 4190 of the end cover 40, and the sealing member 43 are strongly adhered to each other, and the lamp 3 is water-tight. is maintained.

(Action of telescopic structure of lamp 3)
As described above, the lamp 3 includes the end cover 40 , the sealing member 43 , the translucent cover 30 and the mounting member 50 . As shown in FIG. 8, the end cover 40 and the sealing member 43 are sandwiched between the mounting member 44 and the fixed wall 56 of the mounting member 50, and extend along the X direction and a direction crossing the X direction. movement is restricted. The end portion 36 of the translucent cover 30 is inserted into the groove-shaped portion formed by the sealing member inner peripheral portion 435 , the sealing member outer peripheral portion 437 and the connecting portion 436 of the sealing member 43 . It is fitted with the sealing member 43 . The translucent cover 30 is supported by being fitted with the sealing member 43 at both ends thereof.

As shown in FIG. 7 , the length dimension of the translucent cover 30 in the X direction is such that the sealing member 43 covering the end portion 36 is the first length of the end cover 40 in the installation environment serving as a reference for the lighting device 1 . It is set so as not to come into contact with the cover main portion 410 . In other words, in the installation environment that serves as a reference for the lighting device 1, there is a gap between the end surface 35 of the translucent cover 30 and the first cover main portion 410, and the end surface 35 of the translucent cover 30 extends in the X direction. It is free to move along. The reference installation environment means an environment in which the temperature and humidity are set to predetermined values.

10A and 10B are enlarged schematic diagrams illustrating the telescopic structure of the lamp 3 according to Embodiment 1. FIG. FIG. 10(a) is an enlarged view of the periphery of the end portion 36 of the translucent cover 30 in the upper portion of the lamp 3 in the sectional view shown in FIG. 7(a). FIG. 10(b) is an enlarged view of the periphery of the end portion 36 of the translucent cover 30 in the lower portion of the lamp 3 in the sectional view shown in FIG. 7(a). The lamp telescopic structure 100 is provided with a range of motion M in which the end surface 35 can move along the X direction as the translucent cover 30 expands and contracts in the X direction. When the translucent cover 30 extends, the end face 35 of the translucent cover 30 moves closer to the end cover 40 . A first movable range M1, which is a movable range when the translucent cover 30 extends, is a range in which the sealing member 43 can move from the position P1 to the position P2. A position P1 is a position in an installation environment that serves as a reference for the illumination device 1 of the surface of the connecting portion 436 of the sealing member 43 facing the X1 side. The position P2 is the position of the surface facing the X2 side of the concave portion 413 provided around the first cover through hole 411 of the first cover main portion 410 in FIG. is the position of the surface of the cover flange 423 of the second end cover 42 facing the X2 direction. The surface facing the X2 side of the concave portion 413 provided around the first cover through hole 411 of the first cover main portion 410 and the surface facing the X2 side of the cover collar portion 423 of the second end cover 42 are , are arranged at the same position in the X direction.

The end face 35 of the translucent cover 30 can move in the direction of X1 by the first range of motion M1. When the end surface 35 of the translucent cover 30 moves in the X1 direction, the sealing member 43 made of an elastic member can extend in the X1 direction. Therefore, the lamp expandable structure 100 can keep the inside of the light-transmitting cover 30 sealed even when the light-transmitting cover 30 expands due to a change in temperature. In addition, since the first movable range M1 is provided between the end cover 40 and the end face 35 of the light-transmitting cover, the light-transmitting cover 30 can be extended without increasing the size of the lamp 3. ing.

When the translucent cover 30 contracts, the end surface 35 of the translucent cover 30 moves away from the end cover 40 . A second range of motion M2, which is a range of motion when the light-transmitting cover 30 contracts, is a range in which the end surface 35 of the light-transmitting cover 30 can move from position P3 to position P4. A position P3 is the position of the end face 35 of the translucent cover 30 in the installation environment that serves as a reference for the lighting device 1 . The position P4 is the position of the inlet side edge 4353 that is the edge on the X2 side of the inner peripheral portion outer peripheral surface 4352 of the sealing member inner peripheral portion 435 of the sealing member 43 .

The end face 35 of the translucent cover 30 can move in the X2 direction by the second range of motion M2. When the end face 35 of the translucent cover 30 moves in the X2 direction, the contact length between the end 36 of the translucent cover 30 and the sealing member 43 decreases. However, when the sealing member inner peripheral portion 435 of the sealing member 43 receives a force to move in the X2 direction, the inclination of the inner wall portion outer surface 4250 restricts the movement in the X2 direction. The force towards the end 336 of 30 increases. Therefore, the tight contact between the inner peripheral portion 435 of the sealing member 43 and the end portion 36 of the translucent cover 30 is increased, and the telescopic structure 100 for the lamp can be kept even if the translucent cover 30 shrinks due to temperature changes. , the sealing of the interior of the translucent cover 30 can be maintained.

In addition, the end cover 40 has a first surface 424 which faces the side where the translucent cover 30 is positioned in the X direction and which is located inside the end portion 36 of the translucent cover 30, and a first surface 424 which is transparent in the X direction. second surfaces 4100 and 4230 facing the end surface 35 of the light-transmitting cover 30 and facing the side where the light-transmitting cover 30 is located. The end surface 35 of the translucent cover 30 is located at least between the first surface 424 and the second surfaces 4100 and 4230 in the X direction in the installation environment that serves as a reference for the lighting device 1 . With this configuration, the end cover 40 can support the end 36 of the translucent cover 30, and the interior of the translucent cover 30 can be kept sealed. Further, the lamp 3 can maintain sealing even if the translucent cover 30 expands and contracts due to temperature changes.

The end cover 40 and the sealing member 43 of the lamp 3 according to Embodiment 1 may be attached to either one of the ends 3A or 3B in the longitudinal direction X of the lamp 3. FIG. Further, although the lighting device 1 in Embodiment 1 and the modified example has been described by exemplifying the so-called trough-type lighting device 2, the lighting device 1 is not limited to this, and the lighting device 1 is equipped with the lamp 3. As the luminaire 2, other shapes such as a so-called shaded type, a one-side reflection shaded type, a V-shaped type, etc. can be adopted. Further, in Embodiment 1, the lighting device 2 and the lighting device 3 constituting the lighting device 1 are both elongated. The luminaire 2 to be attached may be a short one. For example, the luminaire 3 may have a shape in which the longitudinal dimension of the translucent cover 30 in the cylinder axis direction is smaller than the longitudinal dimension in the radial direction.

Although the first embodiment and the modified examples of the structure of each part thereof have been described above, one of these embodiments and modified examples may be partially implemented. Alternatively, the embodiments and modifications may be partially combined for implementation. It should be noted that the present invention is not limited to these embodiments and modifications, and can be modified in various ways as necessary.

Reference Signs List 1 lighting device, 2 lighting fixture, 3 lamp, 3A end, 3B end, 9 construction section, 20 fixture main body, 21 fixture bottom section, 22 fixture side section, 25 attachment section, 26 opening end, 27 fixture end , 28 screw hole, 29 locking portion, 30 translucent cover, 31 main surface portion, 32 cover side portion, 33 back portion, 35 end surface, 36 end portion, 37 outer peripheral portion, 38 inner peripheral portion, 39 opening, 40 end Part cover, 41 First end cover, 42 Second end cover, 43 Sealing tool, 44 Mounting member, 46 Contact part, 48 Mounting screw, 50 Mounting member, 51 Pedestal, 52 Mounting surface part, 53 Side part, 54 fixing part, 55 mounting part, 56 fixing wall, 57 boss part, 58 screw hole, 59 hanging tool, 60 light emitting part, 61 light emitting element, 62 substrate, 75 fixing screw, 80 control part, 81 power supply line, 82 grounding wire , 83 control line, 84 feeder line, 100 lamp expansion/contraction structure, 336 end portion, 410 first cover main portion, 411 first cover through-hole, 412 mounting member arrangement portion, 413 concave portion, 416 cover wire holding portion, 419 outer wall portion , 420 second cover main portion, 421 end cover insertion portion, 421a insertion wall, 423 cover collar portion, 424 first surface, 425 inner wall portion, 430 closure main portion, 431 wire insertion portion, 432 wire insertion hole, 433 sealing member cylindrical portion, 434 screw insertion hole, 435 sealing member inner peripheral portion, 436 connecting portion, 437 sealing member outer peripheral portion, 439 insertion portion, 451 mounting screw insertion hole, 460 overhang portion, 461 bending portion , 462 inclined portion, 463 tip portion, 521 notch portion, 4100 second surface, 4190 outer wall portion inner surface, 4230 second surface, 4250 inner wall portion outer surface, 4350 inner peripheral portion inner peripheral surface, 4352 inner peripheral portion outer peripheral surface, 4353 inlet Side edge 4370 Outer peripheral surface 4372 Outer peripheral inner peripheral surface L Optical axis M Range of motion M1 First range of motion M2 Second range of motion S Gap T Reference line X Longitudinal direction X1 End direction X2 middle direction, Y lateral direction, Z vertical direction, Z1 upward direction, Z2 downward direction, α irradiation angle, θ1 tilt angle, θ2 tilt angle.

Claims (16)

a mounting member extending in a first direction;
a cylindrical outer shell covering the mounting member and extending in the first direction and having an opening in an end face in the first direction;
an end lid covering the end surface of the outer shell in the first direction;
a closure positioned between the end surface of the shell and the end cap;
a lamp-side mounting portion disposed outside the end lid with respect to the outer shell in the first direction;
The mounting member is
A fixing part that penetrates the end lid and the closure,
The lamp fixture side mounting portion includes:
fixed to the fixed part;
The end lid, the sealing member, and the lamp-side mounting portion are
Movement with respect to the mounting member is restricted,
The end surface of the outer shell in the first direction,
A lamp telescopic structure movable along the first direction with respect to the end cover. The end surface of the outer shell,
2. The lamp according to claim 1, wherein the end cover, the sealing member, and the lamp-side mounting portion move relative to each other along the first direction as the mounting member expands and contracts or the outer shell expands and contracts. structure. The end surface of the outer shell,
3. The lamp expansion/contraction structure according to claim 1, wherein the lamp expandable structure is movable along the first direction with respect to the lamp side mounting portion. The end surface of the outer shell,
inserted into an insertion portion formed in a groove shape along the outer peripheries of the sealing member and the end lid;
It is movable along the first direction in the range of motion,
The range of motion is
4. The lamp extension/contraction structure according to claim 1, wherein the range is between the inlet side edge of the insertion portion and the bottom surface. The end surface of the outer shell,
5. The telescopic structure of the lamp according to claim 4, wherein the telescopic structure of the lamp is in a state of being separated from the end cover in a reference installation environment. The end caps are
contacting the lamp fitting side mounting portion,
The lamp fixture side mounting portion includes:
The lamp telescopic structure according to any one of claims 1 to 5, which is in contact with the mounting member. The end surface of the outer shell,
in contact with the closure;
The lamp telescopic structure according to any one of claims 1 to 6, which is positioned apart from the end cover in the first direction. The end caps are
a first surface facing the side where the outer shell is located in the first direction and located inside the outer shell;
a second surface that faces the side where the outer shell is located in the first direction and faces the end surface of the outer shell;
The end surface of the outer shell,
The lamp telescopic structure according to any one of claims 1 to 7, located between the first surface and the second surface in the first direction. The end caps are
an outer end portion arranged outside the end surface of the outer shell in the first direction;
an outer wall portion disposed outside the outer shell in a second direction that intersects with the first direction;
an inner wall portion arranged inside the outer shell in the second direction;
At least one of the outer wall and the inner wall,
Any one of claims 1 to 8, wherein an inclined portion is formed so that the distance from the outer shell in the second direction increases from the center of the outer shell toward the end face in the first direction. The telescopic structure of the lamp described in the item. At least one of the outer wall and the inner wall,
10. The lamp extension/contraction structure according to claim 9, wherein an inclined portion is formed so that the distance from the outer shell in the second direction increases from the center of the outer shell toward the end face in the first direction. . The closure is
11. The lamp telescopic structure according to claim 9 or 10, arranged between said outer shell and said end lid. The closure is
a closure body;
a closure inner peripheral portion extending toward the end cap at the outer edge of the closure main portion and positioned along the inner peripheral surface of the outer shell;
a closure outer peripheral portion positioned along the outer peripheral surface of the outer shell;
a connecting portion located along the end surface of the outer shell and connecting the inner peripheral portion of the sealing device and the outer peripheral portion of the sealing device;
The main part of the closure is
The lamp expandable structure according to any one of claims 9 to 11, connected in the first direction to an end of the inner peripheral portion of the sealing device on the side where the outer shell is located. The inner periphery of the sealing member is
13. The lamp extension/contraction structure according to claim 12, wherein the inner peripheral surface of the inner peripheral portion facing the inner wall portion is inclined along the inclined portion. The peripheral portion of the sealing member is
14. The lamp extension/contraction structure according to claim 12, wherein an outer peripheral surface of the outer peripheral portion facing the outer wall portion is inclined along the inclined portion. a lamp telescopic structure according to any one of claims 1 to 14;
and light-emitting elements arranged along the first direction on the mounting member. a lamp according to claim 15;
a lighting fixture installed in the construction section and to which the lighting fixture is attached,
The lighting fixture is
An instrument-side mounting portion extending in a direction intersecting the construction portion,
The lamp is
The lighting device, wherein the lamp-side mounting portion is fixed to the fixture-side mounting portion.

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