JP2021026903A - Lamp expansion/construction structure, lamp, and lighting device - Google Patents

Abstract

To provide a lamp expansion/contraction structure which deals with expansion/contraction of a member forming a lighting device with a simple structure, and to provide a lamp and the lighting device.SOLUTION: A lamp expansion/contraction structure, a lamp, and a lighting device include: attachment members extending in a first direction; a cylindrical outer shell covering the attachment members, extending in the first direction, and having openings on end surfaces as seen in the first direction; end part lids each covering the end surfaces as seen in the first direction of the outer shell; sealing tools each disposed between the end surface of the outer shell and the end part lid; and lamp side attachment parts each disposed at the outer side of the end part lid with respect to the outer shell in the first direction. The attachment member includes a fixing part penetrating through the end part lid and the sealing tool. The lamp side attachment part is fixed to the fixing part. The end part lids, the sealing tools, and the lamp side attachment parts are restrained from moving relative to the attachment members. The end surface as seen in the first direction of the outer shell may move along the first direction with respect to the end part lid.SELECTED DRAWING: Figure 1

Description

The present invention relates to a lamp telescopic structure, a lamp, and a lighting device using the lamp, which correspond to expansion and contraction of constituent members.

Conventionally, there has been known a lighting device capable of suppressing interference between members when a structural component expands or contracts due to a change in ambient air temperature (see, for example, Patent Document 1). The light source unit of the lighting device disclosed in Patent Document 1 includes a waterproof case composed of a case body and two end members, and a fitting fixed to the case body of the waterproof case. A gap is provided between the fitting and the end member of the waterproof case, and when the case body of the waterproof case expands due to a change in temperature, interference between the end member and the fitting is suppressed.

Japanese Patent No. 6149688

However, the light source unit disclosed in Patent Document 1 prevents the end member from interfering with the connecting portion due to the expansion of the case body, and hinders the movement of the end member when the case body expands or contracts. The shape of the fixture required a complex structure to avoid it.

The present invention has been made in view of the above, and is to provide a lamp telescopic structure, a lamp, and a lighting device that can expand and contract the members constituting the lighting device with a simple structure.

The lamp telescopic structure according to the present invention includes a mounting member extending in the first direction, a tubular outer shell that covers the mounting member and extends in the first direction and has an opening at an end face in the first direction, and a tubular outer shell extending in the first direction. An end lid that covers the end face of the outer shell, a sealant arranged between the end face of the outer shell and the end lid, and an outer side of the end lid with the outer shell as a reference in the first direction. The mounting member is provided with a fixing portion that penetrates the end lid and the sealing tool, and the lighting tool side mounting portion is fixed to the fixing portion and described as described above. The end lid, the sealant, and the lamp-side mounting portion are restricted from moving with respect to the mounting member, and the end face of the outer shell in the first direction is the first with respect to the end lid. It is movable along the direction.

The lamp according to the present invention includes the above-mentioned lamp telescopic structure and a light emitting element arranged on the mounting member along the first direction.

The lighting device according to the present invention includes the above-mentioned lighting fixture and a lighting fixture installed in a building portion to which the lighting fixture is attached, and the lighting fixture includes a fixture-side mounting portion extending in a direction intersecting the building portion. In the lamp, the lamp-side mounting portion is fixed to the fixture-side mounting portion.

According to the present invention, the end face of the tubular outer shell and the end lid are configured to be able to move relative to each other along the first direction, and the outer shell can be expanded and contracted with a simple structure.

It is a perspective view of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is a divided perspective view which divided the lighting fixture 2 and the lighting fixture 3 of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is an exploded perspective view of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is explanatory drawing of the attachment mechanism of the lamp 3 of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is explanatory drawing of the attachment mechanism of the lamp 3 of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is an exploded perspective view at one end 3A of the lamp 3 which concerns on Embodiment 1. FIG. It is sectional drawing along the longitudinal direction X in one end 3A of the lamp 3 which concerns on Embodiment 1. FIG. It is sectional drawing explaining the structure around the end cover 40 of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is sectional drawing explaining the structure around the end cover 40 of the lighting apparatus 1 which concerns on Embodiment 1. FIG. It is an enlarged schematic diagram explaining the lamp telescopic structure 100 of the lamp 3 according to the first embodiment.

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

Here, the present invention is not limited to the embodiments described below. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one. Further, in the description of the embodiment, the orientation or position such as top, bottom, left, right, front, back, front, back may be indicated. These notations are for convenience of explanation, and do not limit the arrangement, direction, and orientation of the device, instrument, parts, or the like.

Embodiment 1.
<Configuration of lighting device 1>
FIG. 1 is a perspective view of the lighting device 1 according to the first embodiment. FIG. 2 is a divided perspective view of the luminaire 2 and the luminaire 3 of the luminaire 1 according to the first embodiment. FIG. 3 is an exploded perspective view of the lighting device 1 according to the first embodiment. 4 and 5 are explanatory views of the mounting mechanism of the lamp 3 of the lighting device 1 according to the first embodiment. The configuration of the lighting device 1 according to the embodiment will be described with reference to FIGS. 1 to 5.

In the following description, the direction along the longitudinal direction of the lighting device 1 is defined as the longitudinal direction X. Further, it is orthogonal to the longitudinal direction X, and the lateral direction with respect to the longitudinal direction X is defined as the lateral direction Y. Then, the direction orthogonal to both the longitudinal direction X and the lateral direction Y is defined as the vertical direction Z. Further, in the longitudinal direction X, the direction toward the longitudinal end portion is defined as the end direction X1. Then, the direction is opposite to the end direction X1 and the direction toward the longitudinal center side is the middle direction X2. Further, in the vertical direction Z, the direction toward the side of the building portion 9 to which the lighting device 1 is mounted (that is, the side of the mounted portion such as the ceiling or wall) is set to upward Z1. Then, the direction toward the side opposite to the upward Z1 and the direction toward the irradiation space where the light is irradiated from the lighting device 1 is defined as the downward Z2. Here, the upward Z1 is the direction in which the lamp 3 is attached to the luminaire 2, and the downward Z2 is the direction in which the lamp 3 is removed from the luminaire 2.

The luminaire 1 according to the first embodiment has a luminaire 2 attached to a construction unit 9 such as a ceiling or a wall, and a luminaire 3 attached to the luminaire 2. Further, the lamp 3 has a lamp telescopic structure 100, which will be described later.

(Lighting fixture 2)
As shown in FIG. 2A, the fixture body 20 constituting the lighting fixture 2 is formed by bending a metal plate material in the first embodiment. The instrument main body 20 has an instrument bottom portion 21, two instrument side portions 22 and two instrument end portions 27. The instrument bottom surface portion 21 is formed in a long and flat plate shape in the X direction, and a pair of instrument side surface portions 22 are arranged at both ends of the instrument bottom surface portion 21 in the lateral direction Y. Further, the instrument end portions 27, which are a set of two, are arranged at both ends of the instrument bottom surface portion 21 in the longitudinal direction X. The fixture end 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 a lamp-side mounting portion is mounted. A screw hole 28 into which a mounting screw 48, which is a fixture, is screwed is formed in the end portion 27 of the instrument. The screw holes 28 are, for example, subjected to burring processing corresponding to the mounting screws 48, or have nuts incorporated therein.

The mounting portion 25 is a housing portion that accommodates at least a part of the mounted lamp 3. The mounting portion 25 is formed in a concave shape by the instrument bottom surface portion 21 of the instrument body 20, a set of instrument side surface portions 22, and a set of instrument end portions 27. For this reason, the mounting portion 25 forms a space surrounded by the instrument bottom surface portion 21, the instrument side surface portion 22, and the instrument end portion 27 of the instrument body 20. Here, a part of the lamp 3 facing the mounting portion 25 side is a non-irradiating portion that is not the irradiation side. Further, the opening end portion 26 located at the lower end of the instrument body 20 is an opening portion not surrounded by the instrument body 20. The opening end portion 26 is a mounting port for attaching / detaching the lamp 3 to / from the mounting portion 25 of the lighting fixture 2.

At the open end 26 of the instrument body 20, instrument ends 27 are formed at both ends in the longitudinal direction X. The fixture end 27 is a fixture-side mounting portion to which the lamp 3 is mounted. In the first embodiment, the instrument end portion 27 is integrally formed with the instrument bottom surface portion 21, and extends downward Z2 at both ends of the instrument bottom surface portion 21 in the X direction. The screw hole 28 formed in the end portion 27 of the fixture is a hole attached to the lamp 3 to which the mounting screw 48 is screwed. The lamp 3 is screwed to and fixed to the luminaire 2 by a mounting screw 48.

In the first embodiment, as an example of the fixture, the mounting screw is inserted into 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 fixture end 27 which is the fixture side mounting portion. However, it is not limited to this. That is, as the fixture, the movement of the mounting member 44, which is the lamp-side mounting portion, may be restricted with respect to the fixture end 27, which is the fixture-side mounting portion. For example, a non-screwed fixture such as a rivet can be adopted. Is.

In the first embodiment, as an example of the mounting portion on the side of the lighting fixture 2, the fixture end portion 27 formed by bending the end portion of the fixture body 20 in the longitudinal direction X has been described, but the form of the mounting portion is the same. Not limited. As for the mounting portion on the side of the lighting fixture 2, the 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 by using screws, rivets, or the like. It may be attached by tightening.

Further, in the first embodiment, a fixture such as a mounting screw 48 is used to connect the mounting member 44, which is the mounting portion on the lamp side, and the fixture end portion 27, which is the mounting portion on the fixture side. The connection structure between 2 and the lamp 3 is not limited to this. The lamp side mounting portion and the fixture side mounting portion may be connected by engaging with each other. For example, an engaging piece that elastically deforms is provided in either the lamp side mounting portion or the fixture side mounting portion, and the engaging piece is provided in a portion of the lamp side mounting portion and the fixture side mounting portion that faces any of the engaging pieces. An engaging portion for fitting may be provided. In this case, the lamp 3 can be engaged with the luminaire 2 by fitting the engaging piece into the engaging portion. Then, when the lamp 3 is removed from the luminaire 2, it is preferable to provide a configuration in which the engagement can be disengaged by inserting the tip of a screwdriver or the like into the engaging portion into which the engaging piece is fitted. With such a configuration, the construction time for attaching the lamp 3 to the luminaire 2 can be shortened, and the fixture such as the mounting screw 48 is not lost.

As shown in FIG. 5, in the state before the lamp 3 is fixed to the luminaire 2, the lamp 3 is connected to the luminaire 2 by the hanging tool 59. One end of the hanging tool 59 is connected to a locking portion 29 formed on the lighting fixture 2, and the other end is connected to a mounting member 44 which is a mounting portion on the lamp side attached to the end 3A and the end 3B of the lamp 3. Has been done. With this configuration, the luminaire 1 can be hung and supported without dropping the luminaire 3 in a state where the luminaire 3 is removed from the luminaire 2.

(Lamp 3)
The lighting device 3 constitutes the lighting device 1 by being attached to the lighting device 2. As shown in FIG. 2B, the lamp 3 which is also called a luminaire or a light source unit is formed in a long shape and is used by being attached to the luminaire 2. In the first embodiment, the lamp 3 is attached to the fixture end 27 of the luminaire 2 by using mounting screws 48 at both ends of the luminaire 2 in the longitudinal direction X. As shown in FIGS. 2 and 3, the lamp 3 of the first embodiment mainly includes a translucent cover 30, an end cover 40, a sealing tool 43, a light emitting unit 60, and the like.

(Translucent cover 30)
For the translucent cover 30, at least a translucent material that transmits visible light is used. As shown in FIG. 3, it is a tubular outer shell that accommodates and protects the mounting member 50, the light emitting unit 60, the control unit 80, and the like in the internal space. The translucent cover 30 can be formed by using a resin material such as glass, polycarbonate, or acrylic. Further, in the translucent cover 30, the portion exposed to the outside also serves as an exterior design portion. The translucent cover 30 of the first embodiment can be manufactured, for example, by cutting a tubular member formed by extrusion molding to a required length according to product specifications and the like.

In the lamp 3 of the first embodiment, as shown in FIG. 1, the portion of the translucent cover 30 exposed to the outside is an outer shell that covers the irradiation side of the light emitting portion 60 and the pedestal 51. Here, in the cross section orthogonal to the X direction, the translucent cover 30 has a substantially square tubular shape. Specifically, the cross-sectional shape of the translucent cover 30 is a trapezoidal shape with the irradiation side as the upper base and the luminaire 2 side as the lower base. Further, the translucent cover 30 has a shape in which four planes are connected by a curved surface. As shown in FIG. 3, the translucent cover 30 has a main surface portion 31 which is a surface on which light is emitted, a back surface portion 33 which is a surface on the side of the luminaire 2, and a main surface portion 31 and a back surface portion. It includes two cover side portions 32, which are connected to and from 33. The translucent cover 30 is configured such that adjacent portions of the main surface portion 31, the two cover side portions 32, and the back surface portion 33 are connected by a curved surface or the like. In addition, all or a part of the four planes constituting the translucent cover 30 may be curved surfaces. Further, the cross-sectional shape of the translucent cover 30 may be a circular shape including an ellipse, or a polygonal cylinder shape of 3 or more. The translucent cover 30 may have light diffusivity, wavelength discrimination, and the like, depending on the specifications of the product and the like. Further, the portion of the translucent cover 30 that is not exposed to the outside may be formed by 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 the first embodiment. FIG. 7 is a cross-sectional view taken along the longitudinal direction X at one end 3A of the lamp 3 according to the first embodiment. 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 a long hollow body in which at least one end 36 is open, and is an outer shell that houses a substrate 62 on which a light emitting element 61 is mounted.

The end faces 35 are the end faces at both ends of the translucent cover 30 in the longitudinal direction X. The translucent cover 30 has a tubular shape having an opening 39 in the end face 35. Further, the portion of the translucent cover 30 including the end surface 35 is referred to as an end portion 36. The end portion 36 is a portion to which the end cover 40 and the sealing tool 43 are fitted, and is a portion covered by the end cover 40 which is an end lid. The end face 35 is a free end that can move along with the end cover 40 in the first direction X in the longitudinal direction as the translucent cover 30 expands and contracts. Strictly speaking, the translucent cover 30 expands and contracts in a direction other than the "longitudinal direction X", but the lamp 3 according to the embodiment expands and contracts in the "longitudinal direction X" of the translucent cover 30. It has a lamp telescopic structure 100 that allows the above.

The translucent cover 30 is fitted to the end cover 40 with the sealing tool 43 in between. That is, it is the sealant 43 that is directly fitted to the end 36 of the translucent cover 30. As described above, the translucent cover 30 is formed in a tubular shape, and the end cover 40 is configured to fit on the peripheral edge of the tubular opening 39. As shown in FIG. 6, the outer peripheral portion 37 of the translucent cover 30 is on the outer surface side of the tubular outer shell. The inner peripheral portion 38 is on the inner surface side of the outer shell.

(End cover 40)
The end cover 40, which is an end lid, is attached to both ends of the translucent cover 30 in the longitudinal direction X. The end cover 40 is attached to the translucent cover 30 in a state of covering at least a part 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 in a state of covering the end surface 35 on which the opening 39 of the translucent cover 30 is formed. The end cover 40 is attached to the translucent cover 30 so as to press the sealant 43 made of an elastic member against the end 36. The end cover 40, which is an end lid, is attached to the end 36 so as to sandwich the sealant 43, which is an elastic member, with the end 36 of the translucent cover 30. That is, the sealant 43 is fitted to the end portion 36 of the translucent cover 30, and the end cover 40 is fitted to the end portion 36 of the translucent cover 30 with the sealant 43 interposed therebetween. The inside of the translucent cover 30 has a closed structure.

Here, the mounting member 50 and the translucent cover 30 attached to the end cover 40 are particularly in the longitudinal direction X due to changes in the operating environment temperature of the lighting device 1 and the temperature when the lamp 3 is turned on and off. It expands and contracts. The amount of expansion and contraction is different between the mounting member 50 and the translucent cover 30. The end cover 40 has a structure in which the ends of the translucent cover 30 and the mounting member 50 in the longitudinal direction X can move to each other while maintaining the internal seal of the translucent cover 30.

(Seal 43)
The sealant 43 is elastically arranged at 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 cover 40. It is a member. The sealant 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 sealant 43 is, for example, a sealing member (gasket, packing, etc.) that is manufactured by using a resin material and is elastically deformed. Therefore, the sealant 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 cover 40. .. The sealant 43 is formed so as to be elastically deformed using a resin material, and is in close contact with each of the translucent cover 30 and the end cover 40.

The sealing tool 43 has a sealing tool main portion 430, a sealing tool inner peripheral portion 435, a sealing tool outer peripheral portion 437, and a connecting portion 436. Then, the sealing tool main portion 430, the sealing tool inner peripheral portion 435, the sealing tool outer peripheral portion 437, and the connecting portion 436 are integrally formed. The sealant main portion 430 is formed so as to close the inner portion of the sealant inner peripheral portion 435 formed in a tubular shape. The sealant main portion 430 is sandwiched between the fixing wall 56 of the fixing portion 54 and the second cover main portion 420 of the second end cover 42. The sealant main portion 430 is formed in a plate shape, and in a state where the sealant 43 and the end cover 40 are fitted, the sealant main portion 430 is placed on the surface side facing the end cover 40 in the longitudinal direction X. An electric wire insertion portion 431 and a sealing tool tubular portion 433 are formed.

The sealant main portion 430 comes into contact with the second cover main portion 420 of the second end cover 42 in a state where the sealant 43 and the end cover 40 are combined. As shown in FIG. 6, the electric wire insertion portion 431 projects from the surface side facing the end cover 40 in the longitudinal direction X in a state where the sealant 43 and the end cover 40 are combined. The electric wire insertion portion 431 forms an electric wire insertion hole 432 through which the power supply line 81, the ground wire 82, and the control line 83 pass. Two sealing tool tubular portions 433 are provided with the electric wire insertion portion 431 interposed therebetween. The number of sealable tubular portions 433 formed may be one or three or more as long as it is equal to or greater than the number of fixing walls 56 of the fixing portion 54. The sealing tool tubular portion 433 projects toward the surface facing the end cover 40 in a state where the sealing tool 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 tool tubular portion 433 in a state where the sealing tool 43 and the fixing portion 54 of the mounting member 50 are combined. In the first embodiment, the sealing tool 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 tool tubular portion 433, and is configured so that the fixing screw 75 can be screwed to the boss portion 57.

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

The sealing tool outer peripheral portion 437 of the sealing tool 43 is formed in an annular shape and is arranged outside the sealing tool inner peripheral portion 435 so as to face the sealing tool inner peripheral portion 435. The outer peripheral portion 437 of the sealant is transparent to the outer wall portion 419 of the first end cover 41 constituting the end cover 40 in a state where the sealant 43 is combined with the end cover 40 and the translucent cover 30. It is a portion sandwiched between the outer peripheral portion 37 of the sex cover 30.

The connecting portion 436 of the sealing tool 43 is located between the sealing tool inner peripheral portion 435 and the sealing tool outer peripheral portion 437. The connecting portion 436 connects the end portion of the sealing tool inner peripheral portion 435 on the X1 side and the end portion of the sealing tool outer peripheral portion 437 on the X1 side. The connection portion 436 includes the first cover main portion 410 of the first end cover 41 and the end surface 35 of the translucent cover 30 in a state where the sealant 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 the groove-shaped insertion portion 439 formed by the sealing tool inner peripheral portion 435, the sealing tool outer peripheral portion 437, and the connecting portion 436. And fit with the sealant 43.

(Mounting member 44)
The mounting member 44 is a part of the lamp 3 and is connected to the fixture end 27 of the luminaire 2. The mounting members 44 are provided at both ends of the lamp 3 in the longitudinal direction X. The mounting member 44 is also referred to as a lamp-side mounting portion for mounting the lamp 3 to the lighting fixture 2. The surface of the mounting member 44 facing the center side, that is, the X2 side in the longitudinal direction X of the lamp 3 is in contact with the end surface of the boss portion 57 of the mounting member 50, and the fixing portion 54 is used with two fixing screws 75. Is 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 sealant 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 fixing wall 56 of the mounting member 50. That is, the mounting member 44 and the mounting member 50, the sealing tool 43, and the end cover 40 are indirectly fixed, and the relative positions of the sealing tool 43, which is an elastic member, are moved or deformed relative to the mounting member 50. 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 partially fixed to the mounting member 50 penetrating the end cover 40. A part of is fixed to the lighting fixture 2. In the first embodiment, the mounting member 44 is formed by bending a metal plate material. However, the mounting member 44 is not limited to that formed by bending a metal plate material, and may be formed by using other materials such as resin and ceramic, and may be extruded. It may be formed by another method such as laminated molding.

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 mounted on the fixture end 27 that is the fixture-side mounting portion of the lighting fixture 2. A mounting screw insertion hole 451 through which a mounting screw 48, which is a fixture, is inserted is formed in the end portion 27 of the instrument. The mounting screw insertion hole 451 in the first embodiment is a through hole, but may be another embodiment such as a notch.

As shown in FIG. 7, the mounting member 44 includes a contact portion 46 that abuts on the construction portion 9 such as a ceiling surface and a wall surface in a state where the lamp 3 is attached to the luminaire 2. The abutting portion 46 is formed so as to project from both ends of the mounting member 44 in the lateral direction Y toward the instrument side (upward Z1). The contact portion 46 includes an overhanging portion 460 that projects upward from the mounting member 44 to Z1. Further, the contact portion 46 includes a bent portion 461 formed by being bent at the tip end portion of the overhanging portion 460 on the side of the construction portion 9, and an inclined portion 462 extending obliquely from the bent portion 461 to the X2 side. The tip of the inclined portion 462 is referred to as a tip portion 463.

With such a configuration, in a state where the lamp 3 is attached to the lighting fixture 2, the mounting posture of the lamp 3 is determined with reference to the building portion 9 regardless of the installation state of the lighting fixture 2 with respect to the building portion 9. Can be done. Therefore, the lamp 3 can maintain a desired posture with respect to the construction unit 9.

As shown in FIG. 1, the contact portions 46 are provided in pairs with a mounting screw 48 for fixing the mounting member 44 to the luminaire 2 in the lateral direction Y of the lamp 3. Therefore, when the mounting screw 48 is screwed into the screw hole 28 of the fixture end 27, the rotation of the lamp 3 about the axis of the mounting screw 48 as the center of rotation can be restricted.

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 located outside the fixture end 27. When the lamp 3 is attached to the luminaire 2, the mounting member 44 guides the fixture end 27. With the lamp 3 attached to the luminaire 2, the mounting member 44 is restricted from moving with respect to the fixture end 27.

(wiring)
As shown in FIGS. 5 and 6, the mounting member 44 is positioned so as to fit into the mounting member arranging portion 412 formed on the first end cover 41 of the end cover 40. The mounting member arranging portion 412 is a recess formed in the first end cover 41 forming the X1 side surface of the end cover 40. A first cover through hole 411, which is an electric wire insertion hole through which electric wires such as a power supply line 81, a grounding wire 82, and a control line 83 pass, is formed in the central portion of the mounting member arranging portion 412. Further, a recess is formed in the peripheral portion of the first cover through hole 411 of the mounting member arranging portion 412. In a state where the mounting member 44 is arranged in the mounting member arranging portion 412, a gap is formed between the mounting member 44 and the first end cover 41. The electric wires such as the power supply line 81, the ground wire 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 are on the upper surface side of the lamp 3. Pulled out. The electric wire extending from the control unit 80 inside the lamp 3 is drawn to the outside of the lamp 3 by the above structure and connected to an external power source or the like.

(Mounting member 50)
As shown in FIG. 3, the mounting member 50 is a member that fixes the light emitting unit 60, the control unit 80, and the like in the space inside the translucent cover 30. Further, the mounting member 50 is a member 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. Then, as shown in FIGS. 3 and 6, the mounting member 50 is fixed to the mounting member 44 by the fixing screws 75. 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 a sealing tool 43 and an end cover 40 fitted to the mounting member 50.

The pedestal 51 is a main portion of the mounting member 50, and a light emitting unit 60, a control unit 80, and the like are mounted. In the first embodiment, the pedestal 51 is formed by bending a metal plate material. However, the pedestal 51 is not limited to the one formed by bending a metal plate material, and may be formed by using a material other than metal such as resin and ceramic, and may be extruded. It may be formed by another method such as laminated 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 dissipation efficiency (heat emissivity) or light utilization efficiency (reflectivity). You may. The pedestal 51 has a mounting surface portion 52 and a side portion 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 which is the surface on the irradiation side. Further, a control unit 80 such as a power supply device is attached to the back surface, which is the surface on the instrument side.

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

The side portion 53 of the pedestal 51 is an upright portion of the mounting surface portion 52 bent from both ends in the lateral direction Y to 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 pedestal 51. In the first embodiment, the side portion 53 is erected only on the instrument side on which the control unit 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. Further, in the first embodiment, the side portions 53 are erected at both end portions of the mounting surface portion 52 in the lateral direction Y, but other than both end portions such as the central portion of the mounting surface portion 52 in the lateral direction Y. It may be erected at the position of.

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

The mounting portion 55 of the fixing portion 54 is a portion for mounting the fixing portion 54 to the pedestal 51, and is fixed to both end portions of the pedestal 51 by using fixing screws 75. The mounting portion 55 may be structurally integrated with the pedestal 51 by, for example, caulking, welding (welding), or fitting (engagement).

The boss portion 57 of the fixing portion 54 penetrates the sealing tool tubular portion 433 of the sealing tool 43 and fits. That is, the sealant 43 is fitted to the boss portion 57 to determine the position. Then, the end cover 40 is supported by the mounting member 50 via the sealing tool 43, and the translucent cover 30 is supported by the mounting member 50 via the sealing tool 43.

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

(Light emitting unit 60)
As shown in FIGS. 3 and 7, the light emitting unit 60 includes a light emitting element 61, a substrate 62, and the like. The light emitting element 61 emits light by supplying electric power. In the first embodiment, a light emitting diode (Light Emitting Diode; hereinafter referred to as an LED) element is used as the light emitting element 61, and the mounting surface of the substrate 62 is formed in a row shape, a staggered shape, or the like along the longitudinal direction X. Is implemented in. The light emitting element 61 of the first embodiment is packaged by arranging a phosphor that converts blue light into yellow light on an LED chip that emits blue light having a wavelength of 440 to 480 [nm]. It is a pseudo-white LED element that is a surface mount component. Here, the light emitted by the light emitting element 61 has the maximum luminous flux value, and spreads symmetrically by the irradiation angle α with respect to the optical axis L perpendicular to the light emitting surface. In the first embodiment, the irradiation angle α of the light emitting element 61 is assumed to be 120 degrees. As the light emitting element 61, a solid-state laser (Solid State Laser), a semiconductor laser (Semiconducor Laser), an organic EL (Electro Luminescence), an inorganic EL, or the like may be used. As the substrate 62, 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 and the like are used.

The control unit 80 is a power supply device, converts electric power supplied from the outside into electric power for lighting the light emitting element 61, and supplies the electric power to the light emitting element 61. In the first embodiment, as described above, the control unit 80 is attached to the back surface of the attachment surface portion 52 of the pedestal 51 by using a fixing member such as a screw (not shown), together with the light emitting element 61 and the like. It is housed inside the tubular translucent cover 30. However, the control unit 80 may be attached to the luminaire 2 instead of the lamp 3. In this case, the electric wire is a feeder function as a supply path of electric power supplied from the control unit 80 to the light emitting element 61. One end of the electric wires such as the power supply line 81, the ground wire 82, and the control line 83 in the first embodiment is connected to the control unit 80. The other end is connected to a terminal block (not shown) attached to the luminaire 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 the first embodiment. As shown in FIGS. 6 and 7, the end cover 40 has a first end cover 41 that constitutes an external portion and a second end cover 42 that has an internal structure. The second end cover 42 is arranged in 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 the first embodiment will be described as being formed by using a resin material. However, the materials of the first end cover 41 and the second end cover 42 are not limited to the resin material. It may be formed by using a metal material other than the resin material, a ceramic material, or the like. Further, in the first embodiment, the first end cover 41 and the second end cover 42 are made into separate members and are fitted and integrated, but they are molded as one member integrated in advance. You may try to do so.

The first end cover 41 has a first cover main portion 410, an outer wall portion 419 forming an outer peripheral portion of the end cover 40, and a cover electric wire holding portion 416 provided on the upper side surface of the outer wall portion 419. .. The first cover main portion 410 is a portion formed in a plate shape and serves as an 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 in a state where the translucent cover 30, the sealant 43, and the end cover 40 are combined, It is arranged outside the end portion 36 of the translucent cover 30 in the first direction, which is the longitudinal direction X, that is, in the direction of X1.

The outer wall portion 419 is formed as a circumferential wall shape 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 is an outer wall portion that surrounds the first cover main portion 410, which is the outer end portion of the lamp 3 in the X direction, and the end portion 36 of the translucent cover 30 from the outside in the direction intersecting the X direction. It has 419 and. The outer wall portion 419 has a translucent cover 30 in a second direction intersecting the first direction, which is the longitudinal direction X, in a state where the translucent cover 30, the sealant 43, and the end cover 40 are combined. It is arranged outside the end portion 36 of the. Here, the second direction is all directions intersecting the longitudinal direction X, including the lateral direction Y and the vertical direction Z.

The cover electric wire holding portion 416 is formed on the upper surface portion of the outer wall portion 419. The cover electric wire holding portion 416 projects upward (in the direction of Z1) from the outer wall portion 419. The cover wire holding unit 416 electrically connects the terminal block (not shown) provided in the lighting fixture 2 and the control unit 80, and supplies the potential of the power line 81 and the lamp 3 that supply external power to the control unit 80. It holds the grounding wire 82 to be set, the control wire 83 that controls the control unit 80 from the outside, and the like.

The outer wall portion 419 is a side wall formed on the peripheral edge portion of the first cover main portion 410, and is formed from the lower surface to the upper surface of the peripheral edge portion of the first cover main portion 410. The outer wall portion 419 is a portion in which the sealing tool 43 is sandwiched between the sealing tool 43 and the end portion 36 of the translucent cover 30 and fitted to the end portion 36 of the translucent cover 30.

A first cover through hole 411 and a mounting member arranging portion 412 are formed in the first cover main portion 410 of the first end cover 41. In the first cover through hole 411, the sealing tool tubular portion 433 and the boss portion 57 are inserted in a state where the end cover 40, the sealing tool 43, and the mounting member 50 are combined. In the first embodiment, the mounting member arranging 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 a state of being combined with the first end cover 41. The opening formed by the inner wall portion 425 of the second end cover 42 is fitted so as 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 form a wall 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-shaped member, and in a state where the end cover 40 and the sealing tool 43 are combined, the second cover main portion 420 abuts against the sealing tool main portion 430 of the sealing tool 43. 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 is the first cover main in the end cover 40 in the first direction which is the longitudinal direction X of the lamp 3. It constitutes a 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 portion located inside the outer wall portion 419. Further, the inner wall portion 425 of the second end cover 42 constitutes an inner wall portion that faces the outer wall portion 419 of the end cover 40 in the X direction.

The inner wall portion 425 is a side wall formed so as to extend in the direction of X1 from the peripheral edge 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 outer peripheral portion 437 of the sealant 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 translucent cover 30 in the second direction in a state where the translucent cover 30, the sealant 43, and the end cover 40 are combined. It is a part of the cover 40.

An end cover insertion portion 421 is formed on the second end cover 42. The end cover insertion portion 421 has an electric wire insertion portion 431 formed in the sealant main portion 430 of the sealant 43 and a sealant cylinder formed in the sealant main portion 430 of the sealant 43. The shape portion 433 is inserted. Further, in the end cover insertion portion 421, in a state where the end cover 40, the sealing tool 43, and the mounting member 50 are combined, the sealing tool tubular portion 433 and the boss portion 57 of the mounting member 50 are provided. It is inserted. An insertion wall 421a is formed along the edge forming the end cover insertion portion 421. The insertion wall 421a is a peripheral wall formed along the edge of the end cover insertion portion 421, and is formed so as to face the inner wall portion 425. The insertion wall 421a comes into contact with the sealing tool tubular portion 433 through which the boss portion 57 is inserted in a state where the end cover 40, the sealing tool 43, and the mounting member 50 are combined.

(Lamp telescopic structure 100)
FIG. 10 is an enlarged schematic view illustrating the lamp telescopic structure 100 of the lamp 3 according to the first embodiment. The lamp 3 has an end cover 40, a sealant 43, and a translucent cover 30. The end cover 40 has a first cover main portion 410 which is an outer end portion arranged outside the sealant 43 in the first direction which is the longitudinal direction X of the lamp 3. Further, the end cover 40 has an outer wall portion 419 arranged outside the end portion 36 in the second direction intersecting the first direction which is the longitudinal direction X. As shown in FIG. 10, in the first embodiment, the outer wall portion inner surface 4190, which is the inner peripheral surface of the outer wall portion 419, is provided with an inclination angle θ1 required for normal resin molding. The inclination angle θ1 is a punching taper having an inclination angle θ1 ≈ 1 °, and is inclined outward with respect to the reference line T along the longitudinal direction X.

The end cover 40 is formed from the end 36 in a second direction intersecting the first direction, which is the longitudinal direction X, in a state where the translucent cover 30, the sealant 43, and the end cover 40 are combined. It has an inner wall portion 425 arranged inside.

The sealant 43, which is an elastic member, is sandwiched between the end portion 36 of the translucent cover 30, the first cover main portion 410, the outer wall portion 419, and the inner wall portion 425, which are the outer end portions. More specifically, the sealant 43, which is an elastic member, has a sealant outer peripheral portion of the sealant 43 in a state where the translucent cover 30, the sealant 43, and the end cover 40 are combined. The 437 is attached to the end 36 of the translucent cover 30 while being sandwiched between the end 36 and the outer wall 419. Further, the sealing tool inner peripheral portion 435 of the sealing tool 43, which is an elastic member, is attached to the end portion 36 of the transparent cover 30 in a state of being sandwiched between the end portion 36 of the translucent cover 30 and the inner wall portion 425. Has been done. That is, the sealing tool 43, which is an elastic member, is in close contact with the end portion 36, the second cover main portion 420, the outer wall portion 419, and the inner wall portion 425, which are the inner end portions, and the end portion 36 of the translucent cover 30. It is attached to. That is, the sealing tool outer peripheral portion 437 of the sealing tool 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 tool 43 is sealed. The inner peripheral portion 435 of the tool 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. As a result, the sealant 43 seals the opening 39 formed in the end surface 35 of the translucent cover 30.

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

The inclination angle θ2 of the inner wall portion outer surface 4250 is an inclination angle θ2> 0 ° with respect to the reference line T along the longitudinal direction X, and preferably the inclination angle θ2 ≧ inclination angle θ1. When the inclination angle θ2 = the inclination angle θ1, the end cover 40 is in the first direction in which the distance between the outer wall portion 419 and the inner wall portion 425 in the second direction is the longitudinal direction X of the lamp 3. It is the same.

(Assembly of lamp 3)
When assembling the lamp 3, usually, the sealant 43 is first 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 sealant 43 sandwiched between them. The order of attachment to the end 36 of the is common. At this time, the translucent cover 30 is arranged between the outer peripheral surface 4352 of the inner peripheral portion and the inner peripheral surface 4372 of the outer peripheral portion of the sealing tool 43. For example, when assembling the lamp 3, the sealant 43 fitted in the end cover 40 is hard to come off, so that the lamp 3 can be assembled by changing the order without impairing the assembleability.

Since the method and procedure for mounting (fitting) the sealing tool 43 when assembling the lamp tool 3 are increased in choice, the lamp tool 3 can be assembled by various procedures. In the first embodiment, the inner wall portion outer surface 4250 is formed over the entire circumference of the inner wall portion 425. The second direction is all directions (360 °) intersecting the first direction (longitudinal direction X). The inner wall portion outer surface 4250 forming the inclined portion does not have to be provided on all the outer peripheral surfaces of the inner wall portion 425, and may be provided on at least a part of the outer peripheral surface of the inner wall portion 425. Here, the part of the outer peripheral surface of the inner wall portion 425 may be either a part in the first direction (longitudinal direction X) or a part 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.

(Seal of the end of the lamp 3)
The lamp telescopic 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 tool 43, which is an elastic member, is sandwiched between the end portion 36 of the translucent cover 30, 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 state of being in a closed state. The inner wall portion 425 is a first inclined portion that is inclined so 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. The outer surface 4250 of the inner wall portion is formed. The inner wall portion 425 includes the inner wall portion outer surface 4250, and the inner wall portion outer surface 4250 is inclined in this way, so that the sealant 43, which is an elastic member fitted in the end cover 40, is hard to come off.

The inner peripheral surface 4350 of the inner peripheral portion of the sealing tool 43 faces and contacts the inclined inner wall outer surface 4250 in a state where the first end cover 41, the second end cover 42 and the sealing tool 43 are combined. , The part that comes into close contact. The inner peripheral surface 4350 of the inner peripheral portion of the sealing tool 43 comes into surface contact with the inner wall portion outer surface 4250 of the inner wall portion 425 in a state where the first end cover 41, the second end cover 42 and the sealing tool 43 are combined. .. Therefore, the movement of the inner peripheral surface 4350 of the inner peripheral portion of the sealant 43 is restricted by the inclination of the inner peripheral outer surface 4250. Therefore, even when a force is applied to the translucent cover 30 to which the sealant 43 is in close contact in the direction of coming out of the end cover 40, which is the direction of X2, the sealant 43 is still at the end. It is hard to come off from the cover 40. If the sealant 43 moves in the direction of coming out of the end cover 40 (inward X2 facing right in FIG. 8), the sealant 43 faces the end portion 36 of the translucent cover 30 (FIG. 8). Upward Z1) Move. Therefore, the sealing tool 43 has a strong degree of adhesion between the translucent cover 30 and the end cover 40 and the sealing tool 43, and is difficult to be removed from the end cover 40. More specifically, in the lamp 3 and the lamp telescopic structure 100, when the sealant 43 tries to move in the direction of coming out of the end cover 40, the end 36 of the translucent cover 30 and the inner wall outer surface of the end cover 40 The degree of adhesion between the 4250 and the inner surface 4190 of the outer wall portion and the outer peripheral surface 4370 of the outer peripheral portion of the sealant 43 becomes stronger. Therefore, in the lamp 3 and the lamp telescopic structure 100, the translucent cover 30 and the sealing tool 43 are difficult to be removed from the end cover 40.

Further, the end cover 40 has the above-mentioned shape, and the amount of elastic deformation of the sealing tool 43 on the outer peripheral portion 437 of the sealing tool is on the side where rainwater enters rather than on the side of the connecting portion 436. Since the side of the sealing tool main portion 430 is relatively small, the lamp 3 can easily maintain the water-stopping property. Further, the translucent cover 30 and the end cover 40 are strongly adhered to the sealing tool 43, and the lamp 3 is maintained in water-stopping property. More specifically, the end portion 36 of the translucent cover 30, the inner wall portion outer surface 4250 of the end cover 40, and the outer wall portion inner surface 4190 are strongly adhered to the sealing tool 43, and the lamp 3 is maintained to be watertight. To.

The end cover 40 may be configured so 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 inclination angle θ1 described above may be installed so as to be the same as the inclination angle θ2. In this case, since the inclination of the outer wall portion inner surface 4190 and the inclination of the inner wall portion outer surface 4250 are the same angle, the sealant 43 engages the sealant 43 and the end cover 40 when combined with the end cover 40. It will be easier to make.

Further, the inclination angle of the inner surface 4190 of the outer wall portion and the inclination of the outer surface 4250 of the inner wall portion may be changed. For example, the inclination of the outer wall portion inner surface 4190 is made closer to the end 36 of the translucent cover 30 toward the X2 side, and the inclination of the inner wall outer surface 4250 is made closer to the end 36 of the translucent cover 30 toward the X2 side. You may try to move away from it. Alternatively, both the inclination of the outer wall portion inner surface 4190 and the inclination of the inner wall portion outer surface 4250 may be brought closer to 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 tool 43 is matched with the inclination of the outer wall inner surface 4190, and the inclination of the inner peripheral inner peripheral surface 4350 of the sealing tool 43 is matched with the inclination of the inner wall outer surface 4250. good. Even with such a configuration, the end portion 36 of the translucent cover 30, the inner wall portion outer surface 4250 of the end cover 40, and the outer wall portion inner surface 4190 are strongly adhered to the sealing tool 43, and the lamp tool 3 is water-stopping. Is maintained.

(Action of telescopic structure of lamp 3)
As described above, the lamp 3 includes an end cover 40, a sealant 43, a translucent cover 30, and a mounting member 50. As shown in FIG. 8, the end cover 40 and the sealant 43 are sandwiched between the mounting member 44 and the fixing wall 56 of the mounting member 50, along the X direction and the direction intersecting the X direction. Movement is restricted. The end portion 36 of the translucent cover 30 is inserted into a groove-shaped portion formed by the sealing tool inner peripheral portion 435, the sealing tool outer peripheral portion 437, and the connecting portion 436 of the sealing tool 43. It is fitted with the sealant 43. The translucent cover 30 is supported by fitting with the sealant 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 sealant 43 covering the end 36 is the first of the end cover 40 in the installation environment which is the reference of the lighting device 1. It is set so as not to come into contact with the cover main portion 410. That is, in the installation environment that is the reference of 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 is in the X direction. It is movable along. The reference installation environment means an environment in which the temperature and humidity are set to predetermined values.

FIG. 10 is an enlarged schematic view illustrating the telescopic structure of the lamp 3 according to the first embodiment. FIG. 10A 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 cross-sectional view shown in FIG. 7A. 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 cross-sectional view shown in FIG. 7 (a). The lamp telescopic structure 100 is provided with a range of motion M in which the end face 35 can move along the X direction as the translucent cover 30 expands and contracts in the X direction. When the translucent cover 30 is extended, the end face 35 of the translucent cover 30 moves so as to approach the end cover 40. The first range of motion M1, which is the range of motion when the translucent cover 30 extends, is a range in which the sealant 43 can move to the position P2 with reference to the position P1. The position P1 is a position in the installation environment that serves as a reference for the lighting device 1 on the surface of the connecting portion 436 of the sealant 43 facing the X1 side. The position P2 is the position of the surface of the recess 413 provided around the first cover through hole 411 of the first cover main portion 410 in FIG. 10A, facing the X2 side, and is in FIG. 10B. Is the position of the cover flange 423 of the second end cover 42 facing the X2 direction. The surface of the recess 413 provided around the first cover through hole 411 of the first cover main portion 410 facing the X2 side and the surface of the cover flange portion 423 of the second end cover 42 facing the X2 side are , Are arranged at the same position in the X direction.

The end face 35 of the translucent cover 30 can be moved in the direction of X1 by the first range of motion M1. When the end face 35 of the translucent cover 30 moves in the direction of X1, the sealant 43 formed by the elastic member can extend in the direction of X1. Therefore, the lamp telescopic structure 100 can maintain the sealing inside the translucent cover 30 even if the translucent cover 30 is extended due to a temperature change. Further, since the first range of motion M1 is provided between the end cover 40 and the end surface 35 of the translucent cover, the lamp 3 has a configuration in which the translucent cover 30 can be extended without increasing the size. ing.

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

The end face 35 of the translucent cover 30 can be moved in the X2 direction by the second range of motion M2. When the end surface 35 of the translucent cover 30 moves in the direction of X2, the length of contact between the end 36 of the translucent cover 30 and the sealant 43 decreases. However, when the sealing tool inner peripheral portion 435 of the sealing tool 43 receives a force to move in the direction of X2, the inclination of the inner wall portion outer surface 4250 restricts the movement in the X2 direction, and further, the translucent cover. The force towards the end 336 of 30 increases. Therefore, the adhesion between the inner peripheral portion 435 of the sealant 43 and the end portion 36 of the translucent cover 30 is increased, and the lamp telescopic structure 100 has the translucent cover 30 contracted due to a temperature change. , The sealing inside the translucent cover 30 can be maintained.

Further, the end cover 40 is a surface facing the side where the translucent cover 30 is located in the X direction, and is transparent in the X direction with a first surface 424 located inside the end 36 of the translucent cover 30. The second surfaces 4100 and 4230, which are the surfaces facing the side where the optical cover 30 is located and face the end surface 35 of the transparent cover 30, are provided. 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 such a configuration, the end cover 40 can support the end portion 36 of the translucent cover 30, and the sealing inside the translucent cover 30 can be maintained. Further, the lamp 3 can maintain its sealing even if the translucent cover 30 expands and contracts due to a temperature change.

The end cover 40 and the sealing tool 43 of the lamp 3 according to the first embodiment may be attached to either end 3A or 3B of the lamp 3 in the longitudinal direction X. Further, the lighting device 1 in the first embodiment and the modified example has been described by exemplifying a so-called trough type lighting device 2, but the lighting device 1 is not limited to this, and the lighting device 1 is equipped with the lighting device 3. As the lighting fixture 2, other shapes such as a so-called capped type, a one-sided reflective capped type, and a V-shaped type can be adopted. Further, in the first embodiment, the luminaire 2 and the luminaire 3 constituting the luminaire 1 all exemplify a long one, but the present invention is not limited to this, and the luminaire 3 or the lamp 3 may be used. The luminaire 2 to be mounted may be short, and for example, the luminaire 3 may have a shape in which the length dimension in the tubular axis direction of the translucent cover 30 is smaller than the length dimension in the radial direction.

Although the first embodiment described above and the modified examples of the structure of each part thereof have been described, one of these embodiments and the modified examples may be partially implemented. Alternatively, the embodiment and the modified example may be partially combined and implemented. The present invention is not limited to these embodiments and modifications, and various modifications can be made as needed.

1 Lighting device, 2 Lighting equipment, 3 Lighting equipment, 3A end, 3B end, 9 Construction part, 20 Equipment body, 21 Equipment bottom, 22 Equipment side surface, 25 Mounting part, 26 Opening end, 27 Equipment end , 28 screw holes, 29 locking parts, 30 translucent cover, 31 main surface part, 32 cover side part, 33 back part, 35 end face, 36 end part, 37 outer circumference part, 38 inner circumference part, 39 opening, 40 end Part cover, 41 1st end cover, 42 2nd 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 Fixed part, 55 Mounting part, 56 Fixed wall, 57 Boss part, 58 Screw hole, 59 Hanger, 60 Light emitting part, 61 Light emitting element, 62 Board, 75 Fixing screw, 80 Control part, 81 Power line, 82 Ground line , 83 Control line, 84 Power supply line, 100 Lamp telescopic structure, 336 end, 410 1st cover main part, 411 1st cover through hole, 412 Mounting member arrangement part, 413 recess, 416 cover wire holding part, 419 outer wall part , 420 2nd cover main part, 421 end cover insertion part, 421a insertion wall, 423 cover flange part, 424 first surface, 425 inner wall part, 430 sealant main part, 431 wire insertion part, 432 wire insertion hole, 433 Sealant tubular part, 434 Screw insertion hole, 435 Sealer inner circumference part, 436 connection part, 437 Sealer outer circumference part, 439 insertion part, 451 Mounting screw insertion hole, 460 Overhang part, 461 Bending part , 462 Inclined part, 463 Tip part, 521 Notch part, 4100 2nd surface, 4190 Outer wall part inner surface, 4230 2nd surface, 4250 Inner wall part outer surface, 4350 Inner peripheral part inner peripheral surface, 4352 Inner peripheral part outer peripheral surface, 4353 entrance Side edge, 4370 outer peripheral surface, 4372 inner peripheral surface, L optical axis, M movable range, M1 first movable range, M2 second movable range, S gap, T reference line, X longitudinal direction, X1 end direction, X2 Medium, Y Short, Z Vertical, Z1 Up, Z2 Down, α Irradiation Angle, θ1 Tilt Angle, θ2 Tilt Angle.

Claims (16)

A mounting member that extends in the first direction and
A tubular outer shell that covers the mounting member and extends in the first direction and has an opening at the end face in the first direction.
An end lid covering the end face of the outer shell in the first direction,
A sealant arranged between the end face of the outer shell and the end lid,
A lamp-side mounting portion arranged outside the end lid with the outer shell as a reference in the first direction is provided.
The mounting member
The end lid and the fixing portion penetrating the sealant are provided.
The lamp side mounting portion is
Fixed to the fixing part
The end lid, the sealant, and the lamp side mounting portion
Movement to the mounting member is restricted
The end face of the outer shell in the first direction is
A lamp telescopic structure that is movable along the first direction with respect to the end lid. The end face of the outer shell
The lamp expansion and contraction according to claim 1, wherein the lamp equipment expands and contracts so as to move relative to the end lid, the sealing tool, and the lamp equipment side mounting portion along the first direction as the mounting member expands and contracts or the outer shell expands and contracts. Construction. The end face of the outer shell
The lamp telescopic structure according to claim 1 or 2, wherein the lamp can be moved along the first direction with respect to the lamp side mounting portion. The end face of the outer shell
It is inserted into a groove-shaped insertion portion along the outer circumference of the sealant and the end lid.
It is movable along the first direction in the range of motion,
The range of motion is
The lamp telescopic structure according to any one of claims 1 to 3, which is a range between the entrance side edge of the insertion portion and the bottom surface. The end face of the outer shell
The lamp telescopic structure according to claim 4, which is in a state of being separated from the end lid in a reference installation environment. The end lid
In contact with the lamp side mounting part,
The lamp side mounting portion is
The lamp telescopic structure according to any one of claims 1 to 5, which is in contact with the mounting member. The end face of the outer shell
In contact with the sealant
The lamp telescopic structure according to any one of claims 1 to 6, which is located apart from the end lid in the first direction. The end lid
A surface facing the side where the outer shell is located in the first direction, and a first surface located inside the outer shell.
A surface facing the side where the outer shell is located in the first direction and a second surface facing the end surface of the outer shell are provided.
The end face of the outer shell
The lamp telescopic structure according to any one of claims 1 to 7, which is located between the first surface and the second surface in the first direction. The end lid
An outer end portion arranged outside the end face of the outer shell in the first direction,
An outer wall portion arranged outside the outer shell in the second direction intersecting the first direction, and
It has an inner wall portion arranged inside the outer shell in the second direction.
At least one of the outer wall portion and the inner wall portion
Any one of claims 1 to 8, wherein an inclined portion is formed so as to increase the distance from the outer shell in the second direction from the center of the outer shell toward the end surface in the first direction. The lamp telescopic structure described in the section. At least one of the outer wall portion and the inner wall portion
The lamp telescopic structure according to claim 9, wherein an inclined portion is formed so as to increase the distance from the outer shell in the second direction toward the end surface from the center of the outer shell in the first direction. .. The sealant is
The lamp telescopic structure according to claim 9 or 10, which is arranged between the outer shell and the end lid. The sealant is
The main part of the sealant and
An inner peripheral portion of the sealing tool extending toward the end lid at the outer edge of the main portion of the sealing tool and located along the inner peripheral surface of the outer shell.
The outer peripheral portion of the sealant located along the outer peripheral surface of the outer shell, and
It is provided with a connecting portion located along the end surface of the outer shell and connecting the inner peripheral portion of the sealing tool and the outer peripheral portion of the sealing tool.
The sealant main part is
The lamp telescopic structure according to any one of claims 9 to 11, which is connected to the end of the inner peripheral portion of the sealant on the side where the outer shell is located in the first direction. The inner peripheral portion of the sealant is
The lamp telescopic 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 outer peripheral portion of the sealant is
The lamp telescopic structure according to claim 12 or 13, wherein the outer peripheral surface of the outer peripheral portion facing the outer wall portion is inclined along the inclined portion. The lamp telescopic structure according to any one of claims 1 to 14,
A lighting fixture comprising the mounting member with light emitting elements arranged along the first direction. The lamp according to claim 15,
It is equipped with a lighting fixture that is installed in the construction department and to which the lamp is attached.
The lighting equipment
A fixture-side mounting part that extends in the direction of intersection with the building part is provided.
The lamp is
A lighting device in which the lamp-side mounting portion is fixed to the fixture-side mounting portion.

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