JP7139175B2 - Light fixture, telescopic structure of light fixture, and lighting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lamp that expands and contracts while maintaining water-stopping properties, a telescopic structure for a lamp that can expand and contract while maintaining water-stopping properties, and a lighting apparatus using such a lighting fixture having such a telescopic structure.

A lamp and a lighting device are disclosed that can absorb the difference in the amount of expansion and contraction between the mounting member and the outer shell due to temperature changes by moving the connecting member with respect to the mounting member (see, for example, Patent Document 1). ).

Japanese Patent No. 6206811

Since the lamp disclosed in Patent Document 1 has the above-described configuration, excessive stress is less likely to occur in the fixed portion between the mounting member and the outer shell due to temperature rise, and the lamp and the lighting device are resistant to temperature changes. It is described that there is an effect that it is possible to suppress the occurrence of defects caused by this. However, in the lighting device disclosed in Patent Document 1, fixing screws (not shown) are inserted through the respective screw insertion holes of the first fixing portion, and these fixing screws pass through the respective insertion holes of the outer shell and the screw holes of the fixing piece. The fixing screw is inserted through the screw insertion hole of the first fixing part via, for example, a waterproof washer. A fixture for attaching the lamp to the fixture body is attached to the outer shell by screwing the first fixing portion to the fixing piece of the fixture via the outer shell. In other words, the provision of the screw holes in the outer shell of the waterproof case may hinder the waterproofing, which is a problem for lamps that require waterproofing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and includes a lamp that expands and contracts while maintaining water-stopping properties, a telescopic structure for a lamp that can expand and contract while maintaining water-stopping properties, and a lamp that has such a telescopic structure. It is to provide a lighting device using

A lighting device according to the present invention is a lighting device that constitutes a lighting device by being attached to a lighting device, and covers a light emitting surface of a light emitting element arranged on a mounting member, and is arranged in a first direction along the longitudinal direction of the mounting member. An outer shell having an opening formed at the end thereof, an end lid attached to the outer shell while covering the end forming the opening, and a portion disposed outside the end lid in the first direction, is fixed to a mounting member penetrating through the end cap in a first direction and a connecting member the other part of which is fixed to the lighting fixture, the end moving along the first direction It is free.

The lighting fixture of the present invention includes an end lid attached to the outer shell in a state of covering an end forming an opening, and an end lid disposed outside the end lid in a first direction and partially penetrating the end lid. a connecting member fixed to the mounting member that is attached to the lighting fixture, and the other part of the connecting member is fixed to the lighting fixture. And the end is movable along the first direction. Therefore, it is not necessary to form a hole for fixing the lamp in the outer shell, and the end portion of the outer shell can be freely moved while maintaining the waterproofness of the outer shell. As a result, it is possible to provide a lamp that expands and contracts while maintaining water-stopping property, a telescopic structure of the lamp that is expandable while maintaining water-stopping property, and a lighting apparatus using a lamp having such a telescopic structure.

1 is a perspective view of a lighting device according to an embodiment of the invention; FIG. FIG. 2 is a perspective view showing division of a lighting fixture and a lamp of the lighting device according to the embodiment of the present invention; 1 is a cross-sectional view of a lighting device according to an embodiment of the present invention; FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present invention; FIG. 1 is an exploded perspective view of one end of a lighting fixture according to an embodiment of the present invention; FIG. FIG. 4 is an exploded perspective view of the other end of the lamp according to the embodiment of the present invention; 1 is a cross-sectional view along a longitudinal direction X of a lighting fixture according to an embodiment of the present invention; FIG. FIG. 4 is a split perspective view illustrating an end cover of the lamp according to the embodiment of the invention; FIG. 9 is a split perspective view illustrating the end cover of the lamp according to the embodiment of the present invention, viewed from the opposite side of FIG. 8; 1 is a schematic diagram illustrating a sealing structure of a lamp according to an embodiment of the present invention; FIG. FIG. 5 is a schematic diagram illustrating a first modified example of the sealing structure of the lamp according to the embodiment of the present invention; FIG. 7 is a schematic diagram illustrating a second modification of the sealing structure of the lamp according to the embodiment of the present invention; FIG. 9 is a schematic diagram illustrating a third modification of the sealing structure of the lamp according to the embodiment of the present invention; FIG. 10 is a schematic diagram illustrating a fourth modification of the sealing structure of the lamp according to the embodiment of the present invention; FIG. 3 is a cross-sectional view showing a reference arrangement of the elastic structure according to the embodiment of the present invention; FIG. 4 is a cross-sectional view showing the arrangement of the translucent cover in the stretched structure according to the embodiment of the present invention in the stretched state; FIG. 4 is a cross-sectional view showing the arrangement of the translucent cover in the contracted state in the elastic structure according to the embodiment of the present invention;

Hereinafter, a lighting device 3, a telescopic structure 110 of the lighting device 3, and a lighting device 1 according to embodiments of the present invention 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.
<Configuration of lighting device 1>
FIG. 1 is a perspective view of a lighting device 1 according to an embodiment of the invention. FIG. 2 is a split perspective view of the lighting device 1 according to the embodiment of the present invention, in which the lighting fixture 2 and the lighting fixture 3 are separated. FIG. 3 is a cross-sectional view of lighting device 1 according to an embodiment of the present invention. FIG. 3 is a vertical section through the lighting device 1 in plane A of FIG. A configuration of a lighting device 1 according to an embodiment will be described with reference to FIGS. 1 to 3. 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, toward 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 irradiation space side 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 the present embodiment 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 . The lighting device 1 also has a sealing structure 100 for the lamp 3, which will be described later. In this embodiment, a so-called trough-type lighting fixture 2 is shown as an example.

(Lighting fixture 2)
In Embodiment 1, the fixture body 20 that constitutes the lighting fixture 2 is formed by bending a metal plate material. The device body 20 has a device bottom portion 21, a pair of device side portions 22, and a pair of device end portions 23. As shown in FIG. The instrument bottom part 21 is formed in a long and flat plate shape, and two instrument side parts 22 are arranged at both ends in the short direction Y of the instrument bottom part 21 . Moreover, the instrument end portions 23 that form a set of two are arranged at both ends in the longitudinal direction X of the instrument bottom portion 21 . A knockout 24 is formed in the instrument end 23, and is removed when an electric wire (not shown) or the like, which will be described later, is inserted. The configuration and the like of the lighting fixture 2 will be further described.

The mounting portion 25 is a housing portion that houses a portion of the mounted lamp 3 . The mounting portion 25 is formed in a concave shape 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 23 . 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 23 . Here, a part of the lamp 3 accommodated in the mounting portion 25 is a non-irradiating portion 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 serves as a mounting opening for attaching and detaching the lamp 3 to and from the mounting portion 25 of the lighting fixture 2 . Connecting portions 27 are formed at both ends in the longitudinal direction X of the opening end portion 26 of the instrument body 20 . The lamp 3 is attached to the connecting portion 27 . In this embodiment, the connecting portion 27 is formed integrally with the instrument end portion 23 and is formed by bending from the open end portion 26 toward the inward direction X2 in the longitudinal direction X. As shown in FIG. A screw hole 28 formed in the connecting portion 27 is a hole into which a connecting screw 48 (to be described later) attached to the lamp 3 is screwed. The lamp 3 is screwed and fixed to the lighting fixture 2 with a connecting screw 48 .

<Light fixture 3>
FIG. 4 is a perspective view of the lamp 3 according to the embodiment of the invention. The lamp 3 will be described with reference to FIGS. 1 to 4. FIG. The lighting fixture 3 constitutes the lighting device 1 by being attached to the lighting fixture 2 . A lamp 3 serving as a lighting fixture and a light source unit is formed in an elongated shape, and is used by being attached to the lighting fixture 2 . In the present embodiment, the lighting device 3 is attached to the connecting portions 27 of the lighting device 2 at both ends in the longitudinal direction X of the lighting device 2 by connecting screws 48 to be described later. 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 section 60, and the like.

(translucent cover 30)
The light-transmitting cover 30 is made of a light-transmitting material that transmits at least visible light. It is the outer shell. The translucent cover 30 can be formed using a resin material such as glass, polycarbonate, or acrylic. In addition, the portion of the translucent cover 30 that is exposed to the outside from the mounting portion 25 also serves as an appearance design portion. The translucent cover 30 of the present embodiment can be manufactured, for example, by cutting a cylindrical member by extrusion molding into a required length according to product specifications and the like.

In the lamp 3 of the present embodiment, as shown in FIG. 3, the portion of the translucent cover 30 that is exposed to the outside from the mounting portion 25 covers the irradiation side of the light emitting portion 60 and the surface of the pedestal 51. It becomes the outer shell (outer wall). Here, regarding the outer peripheral portion 37 of this portion, the direction of the normal to the outer surface portion is within the range from the direction along the optical axis L of the light emitting element 61 to the direction perpendicular to the optical axis L. FIG. For example, when the lighting device 3 is attached to the lighting device 2 so that light is emitted downward from the lighting device 1, the portion of the translucent cover 30 exposed to the outside from the attachment portion 25 is The outer surface faces downward, obliquely downward, or laterally (horizontally outward). That is, the outer surface portion of the portion of the translucent cover 30 exposed to the outside from the mounting portion 25 does not face upward or obliquely upward. A portion of the translucent cover 30 that is housed in the mounting portion 25 and is not exposed to the outside is an outer shell that covers the control portion 80 and the back side of the mounting surface portion 52 of the pedestal 51 where the control portion 80 is arranged. becomes the part (outer wall part). The surface of the portion of the translucent cover 30 that is housed in the mounting portion 25 and is not exposed to the outside faces the device bottom portion 21 and the set of device side portions 22 of the device main body 20 . Here, 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.

As shown in FIGS. 1 to 4, the cylindrical translucent cover 30 of this embodiment covers the equipment housed therein, and has a pair of parallel portions 31 depending on the position relative to the equipment housed therein. , a first connecting portion 32 and a second connecting portion 33 . Two ribs 34 are provided on the translucent cover 30 . A pair of parallel portions 31 form a pair of surfaces of the translucent cover 30 that are parallel to each other at the same distance. In the light-transmitting cover 30, the outer surface portion serving as the outer surface portion and the inner surface portion serving as the inner surface portion of the set of parallel portions 31 are both planar. The set of outer surface portions and the set of inner surface portions are planes along the optical axis L of the light emitting element 61 accommodated in the translucent cover 30, and are the outer surfaces of the outer shell portion (outer wall portion). . In this embodiment, this plane extends along the vertical direction Z when the lamp 3 is attached to the lighting fixture 2 . Furthermore, this plane is also a plane along which a pair of outer surface portions and a pair of inner surface portions are along fixture side sections 22 facing each other when the lamp 3 is attached to the lighting fixture 2 . This plane also becomes a plane along the direction in which the lamp 3 is attached to the lighting fixture 2 or the direction in which it is removed from the lighting fixture 2 . Therefore, the parallel portion 31 of the translucent cover 30 is positioned inside the instrument side portion 22 rather than outside the instrument side portion 22 in the lateral direction Y. As shown in FIG. A portion of the parallel portion 31 that is exposed when the lamp 3 is attached to the lighting equipment 2 serves as an irradiation portion on the side of the lamp 3 .

The first connecting portion 32 is a portion that connects the irradiation-side ends of the pair of parallel portions 31 , intersects the optical axis L of the light emitting element 61 , and serves as the main irradiation portion of the lamp 3 . The first connection portion 32 emits light downward from the light emitting element 61 . The outer surface portion and inner surface portion of the first connection portion 32 are composed of one or more surfaces. As shown in FIG. 3, in the present embodiment, the case where the outer surface portion and the inner surface portion of the first connection portion 32 of the translucent cover 30 are configured by one curved surface will be described. Here, when the outer surface portion and the inner surface portion of the first connecting portion 32 are composed of a plurality of surfaces, a plurality of curved surfaces having different curvatures, a plurality of planes having different angles, and a combination of these curved surfaces and planes. can be configured in combination. The second connecting portion 33 is a portion that connects the fixture-side ends of the pair of parallel portions 31, and is a portion that is accommodated in the mounting portion 25 when the lamp 3 is mounted on the lighting fixture 2. be. In this embodiment, the case where the outer surface portion and the inner surface portion of the second connection portion 33 in the translucent cover 30 are configured by one curved surface will be described. Here, when the outer surface portion and the inner surface portion of the second connection portion 33 are composed of a plurality of surfaces, a plurality of curved surfaces having different curvatures, a plurality of planes having different angles, and a combination of these curved surfaces and the planes. can be configured in combination.

The rib 34 is provided so as to protrude in the normal direction of the outer surface of the translucent cover 30 . In the present embodiment, the ribs 34 are provided in each parallel portion 31 so as to protrude outward. Each rib 34 is integrally formed with the parallel portion 31 . Each rib 34 extends in the longitudinal direction X of the translucent cover 30 . The rib 34 is formed at a position facing the vicinity of the open end 26 of the fixture side portion 22 when the lamp 3 is attached to the lighting fixture 2 .

FIG. 5 is an exploded perspective view of one end 3A of the lamp 3 according to the embodiment of the invention. FIG. 6 is an exploded perspective view of the other end 3B of the lamp 3 according to the embodiment of the invention. FIG. 7 is a cross-sectional view along the longitudinal direction X of the lamp 3 according to the embodiment of the invention. The translucent cover 30 covers the light emitting surface of the light emitting element 61 arranged on the mounting member 50 and has an opening formed at the end portion 36 in the first direction which is the longitudinal direction X along the longitudinal direction of the mounting member 50 . ing. In other words, 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 cover end portions 35 are both end portions of the translucent cover 30 in the longitudinal direction X of the translucent cover 30 . An end portion 36 is provided at the cover end portion 35 of the translucent cover 30 . The end portion 36 is a portion to which the end cover 40 is fitted at the cover end portion 35 and is a portion covered with the end cover 40 which is an end lid. The end portion 36 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 end portion 36 of the translucent cover 30 and the end portion cover 40 expand and contract in directions other than the "longitudinal direction X". It is assumed that the cover 30 has a structure (configuration) that allows expansion and contraction in the “longitudinal direction X”. The translucent cover 30 does not have ribs 34 formed on the outer surface of the end 36 so that it can be fitted with the end cover 40 . As described above, when the translucent cover 30 is manufactured by cutting a cylindrical member extruded by extrusion molding, of the ribs 34 extending in the longitudinal direction X, the portions corresponding to the end portions 36 are Deleted. As shown in FIGS. 3 and 5, the outer peripheral portion 37 of the translucent cover 30 is an outer surface of an outer shell portion (outer wall portion) that serves as a set of parallel portions 31, a first connection portion 32, and a second connection portion 33. on the side. In addition, the inner peripheral portion 38 is the inner surface side of the outer shell portion (outer wall portion) that forms the set of parallel portions 31 , the first connection portion 32 and the second connection portion 33 .

(Overview of end cover 40)
The end covers 40 are end lids and 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 part of the opening formed in the end 36 and the end 36 . In other words, the end cover 40 is attached to the translucent cover 30 while covering the end 36 forming the opening. The end cover 40 is attached to the translucent cover 30 so as to press a sealing member 43, which is an elastic member, against the end 36. As shown in FIG. An end cover 40, which is an end cover, is attached to the end 36 so as to be in close contact with the end 36 and a sealing member 43, which is an elastic member, sandwiched between the end 36 and the end 36. As shown in FIG. The end cover 40 is fitted (fitted) to the end portion 36 of the light-transmitting cover 30 with the sealing member 43 interposed therebetween, thereby making the light-transmitting cover 30 a closed structure. Here, the mounting member 50 and the light-transmitting cover 30 attached to the end cover 40 are particularly affected in the longitudinal direction X by changes in the operating environment temperature of the lighting device 1 and the temperature when the lamp 3 is turned on and when it is turned off. The amount of expansion and contraction is different. The end cover 40 has a structure in which the end portions of the light-transmitting cover 30 and the mounting member 50 in the longitudinal direction X are movable relative to each other while maintaining the sealing of the light-transmitting cover 30 . . A detailed structure of the end cover 40 will be described later.

(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 that is an elastic member is attached to the end portion 36 of the translucent cover 30 to close the opening of the end portion 36 . The sealing member 43 is made of 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 adheres tightly to the translucent cover 30 and the end cover 40 .

The closure 43 has a closure main portion 430 , an inner peripheral portion 435 , an outer peripheral portion 437 and a connecting portion 436 . The sealing member 43 has a sealing member main portion 430, an inner peripheral portion 435, an outer peripheral portion 437, and a connecting portion 436 integrally formed. The closure main portion 430 is formed so as to block the inside of the inner peripheral portion 435 . The closure main portion 430 is sandwiched between the fixing portion 56 of the fixture 54 and the second cover main portion 420 of the second end cover 42, which will be described later. The closure main portion 430 is formed in a plate-like shape, and in a state where the closure 43 and the end cover 40 are engaged, the wire insertion portion 431 and the sealing member 431 are formed on the side facing the end cover 40 . A stopper tubular portion 433 is 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 engaged. The wire insertion portion 431 protrudes from the side facing the end cover 40 in a state where the sealing member 43 and the end cover 40 are engaged, and passes through the power line 81, the ground line 82, and the control line 83. A wire insertion hole 432 is formed to allow the wire to pass through. Two sealing member tubular portions 433 are provided with the wire insertion portion 431 interposed therebetween. One may be sufficient, and three or more may be sufficient. The sealing member tubular portion 433 protrudes from the side facing the end cover 40 when the sealing member 43 and the end cover 40 are engaged with each other. The boss portion 57 protruding from the fixing portion 56 of the fixing member 54 is inserted into the sealing member cylindrical portion 433 when the sealing member 43 and the fixing member 54 are engaged with each other. The sealing member tubular portion 433 is formed in a cylindrical shape. A screw insertion hole 434 for screwing the fixing screw 75 is formed at the tip of the sealing member cylindrical portion 433 .

An inner peripheral portion 435 is formed at the peripheral edge portion of the closure main portion 430 formed in a plate shape. The inner peripheral portion 435 is aligned with the end cover inner peripheral portion 425 of the second end cover 42 in a state where the sealing member 43 , which is an elastic member, is engaged with the second end cover 42 and the translucent cover 30 . It is a portion sandwiched between the end portion 36 of the translucent cover 30 and the inner peripheral portion 38 .

An outer peripheral portion 437 of the sealing member 43 is formed in an annular shape and arranged outside the inner peripheral portion 38 so as to face the inner peripheral portion 38 . The outer peripheral portion 437 is formed between the outer wall portion 410 a of the first end cover 41 and the outer peripheral portion of the translucent cover 30 when the sealing member 43 is engaged with the first end cover 41 and the translucent cover 30 . 37.

The connection portion 436 of the closure 43 is located between the inner peripheral portion 38 and the outer peripheral portion 437 of the closure main portion 430 . The connecting portion 436 connects the first cover main portion 410 of the first end cover 41 and the translucent cover 30 in a state where the sealing member 43 is engaged with the first end cover 41 and the translucent cover 30 . It is a portion sandwiched between the cover end portion 35 and the cover end portion 35 .

The connecting members 44 are connecting devices, are provided at both ends of the lamp 3 in the longitudinal direction X, and are mounting brackets for mounting the lamp 3 to the lighting device 2 . The connecting member 44 is attached to the fixture using two fixing screws 75 in a state in which the central side (X2 side) surface of the fixing portion 46 in the longitudinal direction X (first direction) and the end surface of the boss portion 57 are in contact with each other. 54 and fixed. The connecting member 44 is not directly fixed to the end cover 40 using screws or the like. The connecting member 44 is positioned and indirectly fixed via the sealing member 43 that is in close contact with the boss portion 57 of the fixture 54 . That is, the connecting 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 partially penetrating the end cover 40 . and another part is fixed to the lighting fixture 2 . In this embodiment, the connecting member 44 is formed by bending a metal plate. However, the connecting 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., and may also be formed by extrusion molding, It may be formed by other methods such as additive manufacturing. The connecting member 44 has a connecting portion 45 , a fixing portion 46 and an engaging portion 47 .

The connecting portion 45 is a plate-shaped member that extends from the lower end (Z2 side) of the fixing portion 46 toward the end portion side (X1 side) of the lamp 3 . That is, the connecting portion 45 is a plate-shaped member that protrudes from the lower edge portion of the fixing portion 46 . The connecting portion 45 protrudes to the opposite side of the end cover 40 when engaged with the end cover 40 . In other words, the connecting portion 45 protrudes in the direction opposite to the protruding direction of the engaging portion 47 . When the lamp 3 is attached to the lighting fixture 2 , the upper surface of the connecting part 45 other than the stepped part 450 contacts the connecting part 27 of the lighting fixture 2 .

A stepped portion 450 having different surface heights is formed in the connecting portion 45 , and a connecting screw insertion portion 451 into which the connecting screw 48 is inserted is formed in the stepped portion 450 . The stepped portion 450 is a portion that is partially recessed downward (Z2 side) in the central region of the connecting portion 45 in the lateral direction Y. As shown in FIG. A retaining washer 480 for fixing the connection screw 48 that has passed through the connection screw insertion portion 451 is arranged on the stepped portion 450 of the connection portion 45 . The retaining washer 480 is fitted to the connecting screw 48 in advance so as not to come off from the connecting screw 48 . The height (depth, step) dimension of the stepped portion 450 is the same as the thickness dimension of the retaining washer 480 . When the lamp 3 is attached to the lighting fixture 2, the upper (Z1 side) surface of the retaining washer 480 abuts the connecting portion 27 of the lighting fixture 2, and the lower (Z2 side) surface of the retaining washer 480 contacts the stepped portion 450 of the connecting member 44 . The shape and area of the stepped portion 450 are determined in consideration of the shape and dimensions of the retaining washer 480 . The connection screw insertion portion 451 is formed in a slit shape from the end portion side (X1 side) in the longitudinal direction X (first direction) at substantially the center of the stepped portion 450 in the lateral direction Y. As shown in FIG. The connection screw insertion portion 451 is formed with a width dimension larger than the shaft portion 481 of the connection screw 48, and the shaft portion 481 of the connection screw 48 is inserted therethrough. The shape of the connection screw insertion portion 451 is not limited to a slit shape, and may be a through hole having a circular or polygonal cross section including an elliptical shape.

The fixing portion 46 is a portion of the connecting portion 45 that stands upward from an end portion on the central side (X2 side) in the longitudinal direction X (first direction). The fixed portion 46 is a plate-like member. The fixing portion 46 clamps the end cover 40 and the sealing member 43 together with the fixing member 54 of the mounting member 50 . A fixing screw insertion hole 460 for screwing the fixing screw 75 is formed in the fixing portion 46 . The fixing screw insertion hole 460 is a through hole through which the fixing screw 75 to be screwed into the screw hole 58 of the boss portion 57 is inserted. The fixing portion 46 is attached to the boss portion 57 by fixing screws 75 inserted into the fixing screw insertion holes 460 .

The connecting member 44 is formed with a slit-like wire insertion hole 470 through which wires such as the power supply wire 81, the ground wire 82, and the control wire 83 are passed. The wire insertion hole 470 has an upper slit 4710 and an end slit 4711 . The wire insertion hole 470 formed in the fixed portion 46 is called an end slit 4711 . The end slit 4711 is formed in the vertical direction (Z-axis direction) of the connecting member 44 . The end slit 4711 is connected to an upper slit 4710 formed in the engaging portion 47 and described later.

An engagement piece insertion hole 461 may be formed in the fixed portion 46 . The engaging piece insertion hole 461 is a through hole provided in the fixing portion 46 corresponding to the cross-sectional shape of the second cover engaging piece 422 and the second cover engaging claw 423 of the second end cover 42 . The engaging piece insertion hole 461 is formed by the second cover engaging piece 422 and the second cover engaging claw 423 of the second end cover 42 that move in the longitudinal direction X (first direction) as the translucent cover 30 extends. are formed so as not to interfere with the fixed portion 46 of the connecting member 44 . The engagement piece insertion hole 461 is formed when the amount of extension of the translucent cover 30, that is, the amount of movement of the second cover engagement piece 422 and the second cover engagement claw 423 is small, or when the end cover 40 is If it is formed integrally, it is unnecessary and not an essential configuration of the lamp 3 .

The engaging portion 47 is a portion of the fixed portion 46 extending from the upper (Z1 side) end toward the center (X2 side) in the longitudinal direction X (first direction). That is, the engaging portion 47 is a plate-shaped member that protrudes from the upper edge portion of the fixing portion 46 . The engaging portion 47 protrudes toward the end cover 40 when engaged with the end cover 40 , and is arranged on the upper side (Z1 side) of the lamp 3 in the lamp 3 .

As described above, the connecting member 44 is formed with a slit-like wire insertion hole 470 through which wires such as the power supply wire 81, the ground wire 82, and the control wire 83 are passed. A wire insertion hole 470 formed in the engaging portion 47 is referred to as an upper slit 4710 . The upper slit 4710 is formed along the longitudinal direction X of the lamp 3 . The upper slit 4710 is connected to an end slit 4711 formed in the fixed portion 46 . The upper slit 4710 is formed in the engaging portion 47 of the connecting member 44 so that the end portion 36 of the translucent cover 30 and the end cover 40 are free ends that are not restricted in movement in the longitudinal direction X (first direction). It is a formed slit. A cover wire holding portion 416 inserted from an insertion hole 472 (to be described later) engages with the upper slit 4710 in a state in which movement in the lateral direction Y and the vertical direction Z is restricted. The cover wire holding portion 416 arranged in the insertion hole 472 is not restricted in movement in the longitudinal direction X (first direction). When the cover wire holding portion 416 is engaged with the upper slit 4710 , the position of the connecting member 44 with respect to the end cover 40 is determined. Alignment of the screw 75 becomes easier. When all or part of the power supply line 81, the ground line 82, and the control line 83 are bundled with a braided tube or the like, they are generally stiff and difficult to bend. However, since the connecting member 44 has end slits 4711 formed so as to be connected to the upper slits 4710 , even if the power supply lines 81 and the like are bundled and difficult to bend, wiring is facilitated.

The engaging portion 47 is formed with an insertion hole 472 into which a cover wire holding portion 416, which will be described later, is inserted. The insertion hole 472 is formed continuously with the upper slit 4710 . The insertion hole 472 is a through hole formed in the fixed portion 46 and is formed to be connected to the central side (X2 side) of the upper slit 4710 in the longitudinal direction X (first direction). The insertion hole 472 is formed with a shape and dimensions that allow the cover wire holding portion 416 to be inserted therein. The cover wire holding portion 416 inserted from the insertion hole 472 moves along the longitudinal direction X while being engaged with the upper slit 4710 in accordance with the extension of the translucent cover 30 . Therefore, the cover wire holding portion 416 does not hinder the expansion and contraction of the translucent cover 30 and the movement of the end cover 40 and the sealing member 43 accompanying the expansion and contraction of the translucent cover 30 .

(Mounting member 50)
As shown in FIGS. 3, 5 and 6, 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. Also, the mounting member 50 is a member that fixes the mounting member 50 to the end covers 40 and connecting members 44 that are attached to both ends of the translucent cover 30 . The mounting member 50 has a pedestal 51 and a fixture 54 . The mounting member 50 is housed in the translucent cover 30 . 5 and 6, the mounting member 50 is fixed to the end cover 40 and the connecting member 44 by fixing screws 75. As shown in FIGS. Therefore, the mounting member 50 is not directly fixed to the translucent cover 30 , but is fitted (fitted) to the cover ends 35 on both sides in the longitudinal direction X of the translucent cover 30 . It is connected to the translucent cover 30 via 40 .

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 this embodiment, 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. 5 , screw holes 520 are formed in the mounting surface portion 52 of the base 51 . The screw holes 520 are formed at both ends in the longitudinal direction X of the mounting surface portion 52 . A fixing screw 75 for fixing the mounting member 50 to the end cover 40 and the connecting member 44 is inserted into the screw hole 520 . The mounting surface portion 52 is formed with a notch portion 521 through which the power supply line 84 and the like are passed. The cutouts 521 are formed at the edges of the mounting surface portion 52 at both ends in the longitudinal direction X of the mounting surface portion 52 . As shown in FIG. 6, a mounting hole 522, which is a through hole, is formed in the mounting surface portion 52 at the other end of the lamp 3 instead of forming the notch portion 521. As shown in FIG. The substrate capturing member 70 is inserted into the mounting hole 522 . The substrate catching member 70 is composed of a catching portion 701 and an engaging portion 702 and has a function of catching the light emitting portion 60 so as not to approach or contact the translucent cover 30 .

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 this embodiment, 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 the present embodiment, 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 fixtures 54 are arranged at both ends of the pedestal 51 in the longitudinal direction X, and are members for fixing the mounting members 50 to the end covers 40 and connecting members 44 mounted to both ends of the translucent cover 30 . . The fixture 54 passes through the end cover 40 and the connecting member 44 is fixed. Here, in the present embodiment, the fixture 54 is configured as a separate member from the pedestal 51, but the configuration of the fixture 54 is not limited to this configuration. For example, the pedestal 51 and the fixture 54 may be integrally formed by bending both end portions of the pedestal 51 so that the pedestal 51 has a portion having the same function as the fixture 54 . The fixture 54 may be attached to the pedestal 51 using a fixing member such as a mounting screw (not shown).

The fixture 54 has a mounting portion 55 and a fixing portion 56, and is manufactured by bending a sheet metal. Although the fixture 54 is a metal fitting, it is not limited to a metal fitting. For example, it may be formed using other materials such as resin and ceramic. It may be formed by a method.

Attachment portions 55 of the fixture 54 are portions for attaching the fixture 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 fixing portion 56 of the fixture 54 sandwiches the end cover 40 and the sealing member 43 together with the fixing portion 46 of the connecting member 44 . That is, in a state in which the translucent cover 30, the sealing member 43, the end cover 40, and the connecting member 44 are combined, there is no seal between the fixing portion 56 and the fixing portion 46 of the connecting member 44. A stopper 43 is arranged. A boss portion 57 is provided on the fixed portion 56 .

The boss portion 57 is attached to the fixed portion 56 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 . Then, from the outside of the connecting member 44, the fixing screw insertion hole 460 of the connecting member 44, the end cover insertion portion 421 of the second end cover 42, the first cover through hole 411 of the first end cover 41, and the sealing member The fixing screw 75 is inserted through the screw insertion hole 434 of 43 . A fixing screw 75 is screwed into the screw hole 58 of the boss portion 57 to fix the connecting member 44 to the fixture 54 of the mounting member 50 . That is, the connecting member 44 is fixed to the boss portion 57 of the fixture 54 .

(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 the present embodiment, 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 the present embodiment is packaged by disposing 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 this embodiment, the irradiation angle α of the light emitting element 61 is assumed to be 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 the present embodiment, 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 in 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 serves as 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 the present embodiment are connected to the control section 80 . The other end is connected to a terminal block (not shown) attached to the lighting fixture 2 .

(Details of end cover 40)
FIG. 8 is a split perspective view illustrating the end cover 40 of the lamp 3 according to the embodiment of the invention. FIG. 9 is a split perspective view illustrating the end cover 40 of the lamp 3 according to the embodiment of the invention, viewed from the opposite side of FIG. The detailed structure of the end cover 40 will be described with reference to FIGS. 5 to 9. FIG. The end cover 40 has a first end cover 41 as an outer cover and a second end cover 42 as an inner cover. The second end cover 42, which serves as an inner cover, is arranged within the first end cover 41, which serves as an outer cover. That is, the end cover 40 is configured by integrating a plurality of parts. Here, it is assumed that the first end cover 41 and the second end cover 42 of the present embodiment are made of 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. In addition, in the present embodiment, the first end cover 41 and the second end cover 42 are formed as separate members and integrated by fitting (fitting). You may make it shape|mold as one member.

The first end cover 41 has a first cover main portion 410 , a connecting guide 413 , a cover lower surface portion 414 , a cover wire holding portion 416 , a cover end surface portion 417 and an end cover peripheral portion 419 . The first cover main portion 410 is a plate-like member, and is an outer end serving as the base of the end cover 40 . 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, It is arranged outside the end portion 36 in the first direction, which is the longitudinal direction X. As shown in FIG.

The connection guide 413 guides a tool such as a screwdriver through the cover lower surface through hole 415 shown in FIG. It is a cylindrical guide wall. The diameter of the connection guide 413 is larger than the diameter of the head of the connection screw 48 which is the maximum diameter of the connection screw 48 .

The cover lower surface portion 414 is formed closer to the end than the first cover main portion 410 in the first direction (longitudinal direction X), and is part of the decorative cover that hides the connecting member 44 , the connecting screw 48 , and the connecting portion 27 of the lighting device 2 . functions as a department. In the present embodiment, the cover lower surface portion 414 is continuous with the end cover outer peripheral portion 419 in consideration of design. The cover lower surface portion 414 is a side wall formed on the peripheral edge portion of the first cover main portion 410 , and is formed from the side surface to the lower surface of the peripheral edge portion of the first cover main portion 410 . The cover lower surface portion 414 forms an outer wall portion 410 a which is a side wall formed along the peripheral portion of the first cover main portion 410 together with the end cover outer peripheral portion 419 . The outer wall portion 410a is formed in a circumferential wall shape standing up from the peripheral edge of the first cover main portion 410, which is the outer end portion. That is, the first end cover 41 has a first cover main portion 410, which is an outer end portion, and an outer wall portion 410a. The outer wall portion 410a is formed in the first cover main portion 410, which is the outer end portion, and extends in the longitudinal direction X when the translucent cover 30, the sealing member 43, and the end cover 40 are combined. It is arranged outside the end portion 36 in a second direction that intersects with the first direction. 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 end cover outer peripheral portion 419 . The cover wire holding portion 416 protrudes upward (in the Z1 direction) from the outer peripheral portion 419 of the end cover. The cover wire holding portion 416 is electrically connected to a terminal block (not shown) provided in the lighting fixture 2 and the control section 80 , and the power supply line 81 for supplying external power to the control section 80 and the potential of the lighting fixture 3 and a control line 83 for controlling the controller 80 from the outside.

The cover end surface portion 417 is formed so as to cover the end portion side of the cover lower surface portion 414 in the first direction (longitudinal direction X), and is a decorative cover that hides the connection member 44 , the connection screw 48 , and the connection portion 27 of the lighting device 2 . function as part of

The end cover outer peripheral portion 419 is a side wall formed on the peripheral portion of the first cover main portion 410 and is formed from the side surface to the upper surface of the peripheral portion of the first cover main portion 410 . The end cover outer peripheral portion 419 forms an outer wall portion 410 a which is a side wall formed along the peripheral portion of the first cover main portion 410 together with the cover lower surface portion 414 . The end cover peripheral portion 419 is a portion fitted to the end portion 36 of the translucent cover 30 with the sealing member 43 interposed therebetween. In the present embodiment, the end cover outer peripheral portion 419 is continuous with the cover lower surface portion 414 in consideration of design.

A first cover through hole 411 , a first cover connecting hole 412 , a cover lower surface through hole 415 and a cover end surface through hole 418 are formed in the first end cover 41 . The sealing member cylindrical portion 433 and the boss portion 57 are inserted through the first cover through hole 411 in a state in which the end cover 40 , the sealing member 43 and the mounting member 50 are combined. In this embodiment, four first cover connecting holes 412 are formed in the first cover main portion 410, and four second cover engaging pieces 422 formed in the second end cover 42 are inserted. be done. The second cover engaging claws 423 formed at the ends of the second cover engaging pieces 422 are hooked in the first cover connecting holes 412 and engaged with each other, thereby connecting the second end cover 42 to the first end portion. It is attached to the cover 41 . The cover lower surface through-hole 415 is a hole for inserting a tool such as a screwdriver toward the connecting screw 48 preliminarily attached to the connecting screw insertion portion 451 formed in the stepped portion 450 of the connecting member 44. This hole is closed by the cover lid 49 after construction. The cover lower surface through-hole 415 functions as an outlet for the connection screw 48 in the unlikely event that the connection screw 48 is detached from the connection screw insertion portion 451 . The cover end surface through-hole 418 is a discharge hole through which liquid such as moisture or dust accumulated in the end cover is discharged.

The second end cover 42 constitutes the end cover 40 together with the first end cover 41 , and when the second end cover 42 and the first end cover 41 are combined, the first end cover 41 is placed inside the The end cover 40 is fitted so that the opening formed by the end cover inner peripheral portion 425 of the second end cover 42 and the opening formed by the outer wall portion 410a of the first end cover 41 face each other. formed into a shape. 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 , a second cover engaging piece 422 , a second cover engaging claw 423 and an end cover inner peripheral 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. at the end. The second cover main portion 420, which is the inner end portion, corresponds to the first cover main portion 410, which is the outer end portion of the end cover inner peripheral portion 425, which is the inner wall portion, in the first direction, which is the longitudinal direction X of the lamp 3. A surface of the end cover 40 opposite to the first cover main portion 410 is formed at the end opposite to the . That is, the second end cover 42 has a second cover main portion 420 that is an inner end portion and an end cover inner circumferential portion 425 that is an inner wall portion.

Four second cover engaging pieces 422 are formed in the present embodiment, and the second cover engaging pieces 422 are arranged in a state in which the first end cover 41 and the second end cover 42 are combined. , are inserted into the four first cover connecting holes 412 formed in the first end cover 41 . The second cover engaging claws 423 are provided at the ends of the second cover engaging pieces 422, respectively, and hook into the first cover connecting holes 412 provided in the first cover main portion 410 of the first end cover 41. Engage by. The second end cover 42 is attached to the first end cover 41 by engaging the second cover engaging claws 423 with the first cover connecting holes 412, and the first end cover 41 and the second end cover 41 are connected to each other. The cover 42 forms an integral structure.

The end cover inner peripheral portion 425 is a side wall formed on the peripheral edge portion of the second cover main portion 420 . The end cover inner peripheral portion 425 is an inner wall portion formed in a peripheral wall shape so as to face the outer wall portion 410a in the end cover 40 with the sealing member tubular portion 433 and the end portion 36 interposed therebetween. be. The end cover inner peripheral portion 425 is an inner wall portion arranged inside the end portion 36 in the second direction in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. be. The detailed structure of the end cover inner peripheral portion 425 will be described later.

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. Further, the end cover tubular portion 433 and the boss portion 57 are inserted through the end cover insertion portion 421 in a state in which the end cover 40 , the seal 43 and the mounting member 50 are combined. 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 is formed to face the end cover inner peripheral 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.

FIG. 10 is a schematic diagram illustrating the sealing structure 100 of the lamp 3 according to the embodiment of the invention. The detailed structure of the end cover inner peripheral portion 425 and the sealing structure 100 of the lamp 3 will be described with reference to FIG. Components of the sealing structure 100 of the lamp 3 include the end cover 40 , the sealing member 43 and the translucent cover 30 . The end cover 40 is a sealing member that is an elastic member in the first direction, which is the longitudinal direction X of the lamp 3, in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. It has a first cover main portion 410 which is an outer end arranged outside the tool 43 . In addition, the end cover 40, in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined, has an end portion in a second direction crossing the first direction, which is the longitudinal direction X. 36 has an outer wall portion 410a arranged outside thereof. Note that, in the present embodiment, the end cover outer peripheral inner surface portion 4190, which is the inner peripheral surface of the end cover outer peripheral portion 419, has an inclination angle θ1 required for normal resin molding that is equal to the reference line T along the longitudinal direction X. , a draft taper having an inclination angle θ1≈1° is formed. Furthermore, the end cover 40 is an inner wall portion arranged inside the end 36 in the second direction in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. It has an end cover inner perimeter 425 .

The sealing member 43, which is an elastic member, is sandwiched between the end portion 36, the first cover main portion 410, which is the outer end portion, the outer wall portion 410a, and the end cover inner peripheral portion 425, which is the inner wall portion. It is attached to the portion 36 . More specifically, when the sealing member 43, which is an elastic member, is combined with the translucent cover 30, the sealing member 43, and the end cover 40, the outer peripheral portion 437 of the sealing member 43 is It is attached to the end portion 36 while being sandwiched between the end portion 36 and the outer wall portion 410a. In addition, the sealing member 43, which is an elastic member, is such that the inner peripheral portion 435 of the sealing member 43 is aligned with the edge portion when the translucent cover 30, the sealing member 43, and the end cover 40 are combined. 36 and the inner peripheral portion 425 of the end cover which is the inner wall portion. 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 410a, and the end cover inner peripheral portion 425, which is the inner wall portion. It is attached to portion 36 and seals the opening formed by end portion 36 .

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

The inclination angle θ2 of the end cover inner peripheral outer surface portion 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 410a and the end cover inner peripheral portion 425, which is the inner wall portion, of the end cover 40 in the second direction is the longitudinal direction of the lamp 3. The same is true in the first direction, which is the X direction.

<Assembly of the lamp 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 outer surface portion 4352 and the outer peripheral inner surface portion 4370 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 the present embodiment, the end cover inner peripheral outer surface portion 4250 is formed along the entire circumference of the end cover inner peripheral portion 425 . Therefore, the above second direction is all directions (360°) intersecting with the first direction (longitudinal direction X). It should be noted that the end cover inner peripheral outer surface portion 4250 that forms the inclined portion need not be provided on the entire outer peripheral surface of the end cover inner peripheral portion 425 , and at least the end cover inner peripheral portion 425 It suffices if it is provided on a part of the outer peripheral surface. Here, the portion of the outer peripheral surface of the end cover inner peripheral portion 425 may be either a portion in the first direction (longitudinal direction X) or a portion in the circumferential direction. The end cover inner peripheral portion outer surface portion 4250 may be provided at one location on the end cover inner peripheral portion 425, or may be provided at a plurality of locations.

<Effect>
As described above, the sealing member 43, which is an elastic member, includes the end portion 36, the first cover main portion 410 which is the outer end portion, the outer wall portion 410a, and the end cover inner peripheral portion 425 which is the inner wall portion. It is attached to the end portion 36 in a pinched state. The end cover inner peripheral portion 425, which is the inner wall portion, is provided 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. An end cover inner peripheral outer surface portion 4250 is formed as an inclined first inclined portion. The end cover inner peripheral portion 425 has an end cover inner peripheral outer surface portion 4250, and the end cover inner peripheral outer surface portion 4250 is inclined in this way so that the elastic member is fitted to the end cover 40. Some closures 43 are difficult to remove. The inner peripheral inner surface portion 4350 of the closure 43 faces the inclined end cover inner peripheral outer surface portion 4250 in the combined state of the first end cover 41, the second end cover 42 and the closure 43. It is a portion that touches, abuts, and adheres. The inner peripheral inner surface portion 4350 of the sealing member 43 corresponds to the end cover inner peripheral portion of the end cover inner peripheral portion 425 when the first end cover 41, the second end cover 42 and the sealing member 43 are combined. It is in surface contact with the outer surface portion 4250 . Therefore, the movement of the inner peripheral inner surface portion 4350 of the sealing member 43 is restricted by the inclination of the inner peripheral outer surface portion 4250 of the end cover. When a force is applied in the first direction (longitudinal direction X) to the translucent cover 30 to which the sealing member 43 is in close contact, in a direction (rightward direction X2 in FIG. 10) in which the end cover 40 is removed, The optical cover 30 and the closure 43 are in no danger of coming off the end cover 40 . If the sealing member 43 moves in a direction (rightward direction X2 in FIG. 10) coming out of the end cover 40, the sealing member 43 moves toward the end portion 36 of the translucent cover 30 (upward in FIG. 10). do. Therefore, the degree of close contact between the translucent cover 30 and the end cover 40 and the sealing member 43 is strengthened, and the translucent cover 30 and the sealing member 43 are less likely to come off from the end cover 40 . More specifically, the lamp 3 and the sealing structure 100 for the lamp 3 include the end portion 36 of the translucent cover 30 , the end cover inner peripheral outer surface portion 4250 and the end cover outer peripheral inner surface portion 4190 of the end cover 40 . , the degree of close contact with the sealing member 43 becomes stronger. Therefore, in the lamp 3 and the sealing structure 100 for the lamp 3 , the translucent cover 30 and the sealing member 43 are difficult to come off from the end cover 40 . That is, the lamp 3 and the sealing structure 100 for the lamp 3 do not cause the translucent cover 30 and the sealing member 43 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 at the outer peripheral portion 437 of the sealing member 43 is greater than that on the side of the sealing member where rainwater enters rather than the connecting portion 436 side. Since the side of the 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 end cover inner peripheral portion outer surface portion 4250 and the end cover outer peripheral portion inner surface portion 4190 of the end cover 40, and the sealing member 43 are strongly adhered, The lamp fixture 3 and the sealing structure 100 are maintained waterproof.

The light-transmitting cover 30, which is the outer shell, is an elongated hollow body with at least one end 36 open, and accommodates the substrate 62 on which the light-emitting element 61 is mounted. The longitudinal direction X of 30 is the first direction. Therefore, the lamp 3 can ensure the degree of close contact between the translucent cover 30, the sealing member 43, and the end cover 40, and can maintain water stopping properties. can protect the light emitting element 61 arranged inside the hollow body.

In the end cover 40, the distance between the outer wall portion 410a and the end cover inner peripheral portion 425, which is the inner wall portion, in the second direction is from the center of the translucent cover 30, which is the outer shell, to the end portion in the first direction. It gets bigger as it goes to 36. Therefore, the sealing member 43, which is an elastic member fitted in the end cover 40 with the sloped outer surface 4250 of the inner peripheral part of the end cover, is difficult to come off. In addition, the end portion 36 of the translucent cover 30, the end cover inner peripheral portion outer surface portion 4250 and the end cover outer peripheral portion inner surface portion 4190 of the end cover 40, and the sealing member 43 are in close contact with each other. The sealing structure 100 of the lamp 3 maintains water stopping properties.

Also, in the end cover 40, the distance between the outer wall portion 410a in the second direction and the end cover inner peripheral portion 425, which is the inner wall portion, may be the same in the first direction. In this case, since the inclination of the end cover outer peripheral inner surface part 4190 and the inclination of the end cover inner peripheral outer surface part 4250 are the same angle, when the end cover 40 is assembled, the user can easily handle the sealing member 43 and the end cover. It becomes easy to engage with the part cover 40 .

(Modification 1)
FIG. 11 is a schematic diagram illustrating a first modification of the sealing structure 100 of the lamp 3 according to the embodiment of the present invention. The outer surface portion 4250a of the inner peripheral portion of the end cover is formed with a draft taper in which the inclination angle θ3 necessary for normal resin molding is about 1° with respect to the reference line T along the longitudinal direction X. It is Further, this is a modification in which the end cover outer peripheral inner surface portion 4190a forms an inclined surface as a second inclined portion corresponding to the first inclined portion. In the first direction (longitudinal direction X), the outer peripheral portion inner surface portion 4190a of the end cover intersects the first direction (longitudinal direction X) from the first cover main portion 410 toward the second cover main portion 420 side. It is inclined so that the distance from the end portion 36 becomes smaller in two directions. That is, the outer wall portion 410a has a second inclined portion that is inclined so 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 end cover outer peripheral inner surface portion 4190a is formed. In other words, the end cover outer peripheral inner surface portion 4190a, which is the second inclined portion, in the first direction (longitudinal direction X) is inclined 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 increases in the intersecting second direction. That is, the outer wall portion 410a has a second inclined portion that is inclined so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. An end cover outer peripheral inner surface portion 4190a is formed.

The inclination angle θ4 of the end cover outer peripheral inner surface portion 4190a with respect to the reference line T along the longitudinal direction X satisfies the inclination angle θ4>0°, preferably the inclination angle θ4≧the inclination angle θ3. When the inclination angle θ4=the inclination angle θ3, the distance between the outer wall portion 410a and the end cover inner peripheral portion 425, which is the inner wall portion, of the end cover 40 in the second direction is the longitudinal direction of the lamp 3. The same is true in the first direction, which is the X direction. Further, the cover collar portion 426 is formed on the second end cover 42a, and in a state in which the second end cover 42a and the sealing member 43a are combined, the cover collar portion 426 is connected to the connecting portion 436 of the sealing member 43a. Oppose, abut and adhere to.

As described above, the sealing member 43, which is an elastic member, includes the end portion 36, the first cover main portion 410 which is the outer end portion, the outer wall portion 410a, and the end cover inner peripheral portion 425 which is the inner wall portion. It is attached to the end portion 36 in a pinched state. The outer wall portion 410a has an end portion which is a second inclined portion that is inclined so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. A cover outer peripheral inner surface portion 4190a is formed. The outer wall portion 410a is provided with the end cover outer peripheral inner surface portion 4190a, and the end cover outer peripheral inner surface portion 4190a is inclined in this way, so that the sealing member 43, which is an elastic member fitted in the end cover 40, is difficult to come off. Become. The outer peripheral outer surface portion 4372 of the sealing member 43 faces the inclined end cover outer peripheral inner surface portion 4190a in the state in which the first end cover 41, the second end cover 42 and the sealing member 43 are combined, It is a portion that abuts and adheres. When the first end cover 41, the second end cover 42 and the sealing member 43 are combined, the outer peripheral outer surface portion 4372 of the sealing member 43 is flush with the inner peripheral inner surface portion 4190a of the outer wall portion 410a. Contact. Therefore, the movement of the outer peripheral portion outer surface portion 4372 of the sealing member 43 is restricted by the inclination of the end cover outer peripheral portion inner surface portion 4190a. When a force is applied in the first direction (longitudinal direction X) to the translucent cover 30 to which the sealing member 43 is in close contact, in a direction (rightward direction X2 in FIG. The optical cover 30 and the closure 43 are in no danger of coming off the end cover 40 . If the sealing member 43 moves in a direction (rightward direction X2 in FIG. 11) coming out of the end cover 40, the sealing member 43 moves toward the end portion 36 of the translucent cover 30 (upward in FIG. 11). do. Therefore, the degree of close contact between the translucent cover 30 and the end cover 40 and the sealing member 43 is strengthened, and the translucent cover 30 and the sealing member 43 are less likely to come off from the end cover 40 . More specifically, the degree of close contact between the end portion 36 of the translucent cover 30, the end cover inner peripheral outer surface portion 4250a and the end cover outer peripheral inner surface portion 4190a of the end cover 40, and the sealing member 43 becomes stronger. , the translucent cover 30 and the sealing member 43 become difficult to come off from the end cover 40 . That is, the lamp 3 and the sealing structure 100 for the lamp 3 do not cause the translucent cover 30 and the sealing member 43 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 at the outer peripheral portion 437 of the sealing member 43 is greater than that on the side of the sealing member where rainwater enters rather than the connecting portion 436 side. Since the side of the 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 end cover inner peripheral portion outer surface portion 4250a and the end cover outer peripheral portion inner surface portion 4190a of the end cover 40, and the sealing member 43 are strongly adhered, The lamp 3 and the sealing structure 100 for the lamp 3 maintain water cutoff properties.

In the end cover 40, the distance between the outer wall portion 410a and the end cover inner peripheral portion 425, which is the inner wall portion, in the second direction is from the center of the translucent cover 30, which is the outer shell, to the end portion in the first direction. It gets bigger as it goes to 36. Therefore, the sealing member 43, which is an elastic member fitted in the end cover 40 with the inner surface portion 4190a of the outer peripheral portion of the end cover 4190a forming an inclination, is difficult to come off. In addition, the end portion 36 of the translucent cover 30, the end cover inner peripheral portion outer surface portion 4250a and the end cover outer peripheral portion inner surface portion 4190a of the end cover 40, and the sealing member 43 are in close contact with each other. The sealing structure 100 of the lamp 3 maintains water stopping properties.

Also, in the end cover 40, the distance between the outer wall portion 410a in the second direction and the end cover inner peripheral portion 425, which is the inner wall portion, may be the same in the first direction. In this case, since the inclination of the end cover outer peripheral inner surface portion 4190a and the inclination of the end cover inner peripheral outer surface portion 4250a are the same angle, when the end cover 40 is combined with the end cover 40, the end cover 43 and the end cover 43 can be easily separated from each other. It becomes easy to engage with the part cover 40 .

(Modification 2)
FIG. 12 is a schematic diagram illustrating a second modification of the sealing structure 100 of the lamp 3 according to the embodiment of the invention. The lamp fixture 3 of Modified Example 2 is a modified example in which the end cover outer peripheral portion outer surface portion 4250b functions as a first inclined portion, and the end cover outer peripheral portion inner surface portion 4190b functions as a second inclined portion. That is, the end cover inner peripheral outer surface portion 4250b is the outer peripheral surface of the end cover inner peripheral portion 425 and forms an inclined surface as the first inclined portion.

In the first direction (longitudinal direction X), the inner peripheral outer surface portion 4250b of the end cover, which is the first inclined portion, increases in the first direction (longitudinal direction) from the second cover main portion 420 toward the first cover main portion 410 . X) so that the distance from the end 36 increases in the second direction. That is, the end cover inner peripheral portion 425, which is the inner wall portion, is provided so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. An end cover inner peripheral outer surface portion 4250b, which is a first inclined portion, is formed. In other words, in the first direction (longitudinal direction X), the inner peripheral outer surface portion 4250b of the end cover extends in the first direction (longitudinal direction X) toward the second cover main portion 420 from the first cover main portion 410. X) so that the distance from the end portion 36 decreases in the second direction. That is, the end cover inner peripheral portion 425, which is the inner wall portion, is provided so that the distance from the end portion 36 in the second direction becomes smaller as the distance from the end portion 36 of the translucent cover 30 toward the center in the first direction becomes smaller. An end cover inner peripheral outer surface portion 4250b, which is a first inclined portion, is formed. The inclination angle θ2 of the end cover inner peripheral outer surface portion 4250b with respect to the reference line T along the longitudinal direction X satisfies the inclination angle θ2>0°.

In addition, the end cover outer peripheral inner surface portion 4190b forms an inclined surface as a second inclined portion corresponding to the first inclined portion. In the first direction (longitudinal direction X), the outer peripheral portion inner surface portion 4190b of the end cover intersects the first direction (longitudinal direction X) from the first cover main portion 410 toward the second cover main portion 420 side. It is inclined so that the distance from the end portion 36 becomes smaller in two directions. That is, the outer wall portion 410a has a second inclined portion that is inclined so 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 end cover outer peripheral inner surface portion 4190b is formed. In other words, the end cover outer peripheral inner surface portion 4190b, which is the second inclined portion, is inclined 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 increases in the intersecting second direction. That is, the outer wall portion 410a has a second inclined portion that is inclined so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. An end cover outer peripheral inner surface portion 4190b is formed. The inclination angle θ4 of the end cover outer peripheral inner surface portion 4190b with respect to the reference line T along the longitudinal direction X satisfies the inclination angle θ4>0°.

As described above, the sealing member 43, which is an elastic member, includes the end portion 36, the first cover main portion 410 which is the outer end portion, the outer wall portion 410a, and the end cover inner peripheral portion 425 which is the inner wall portion. It is attached to the end portion 36 in a pinched state. The end cover inner peripheral portion 425, which is the inner wall portion, is provided 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. An end cover inner peripheral outer surface portion 4250b, which is a first inclined portion, is formed. Further, the sealing member 43, which is an elastic member, is sandwiched between the end portion 36, the first cover main portion 410, which is the outer end portion, the outer wall portion 410a, and the end cover inner peripheral portion 425, which is the inner wall portion. attached to the end portion 36 in the state shown in FIG. The outer wall portion 410a has an end portion which is a second inclined portion that is inclined so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. A cover outer peripheral inner surface portion 4190b is formed. Therefore, as described above, the degree of close contact between the translucent cover 30 and the end cover 40 and the sealing member 43 is strengthened, and the translucent cover 30 and the sealing member 43 are less likely to come off from the end cover 40. Become. More specifically, the degree of close contact between the end portion 36 of the translucent cover 30, the end cover inner peripheral outer surface portion 4250b and the end cover outer peripheral inner surface portion 4190b of the end cover 40, and the sealing member 43 becomes stronger. , the translucent cover 30 and the sealing member 43 become difficult to come off from the end cover 40 . In other words, the translucent cover 30 and the sealing member 43 do not come off from the end cover 40 . In addition, the end portion 36 of the translucent cover 30, the end cover inner peripheral portion outer surface portion 4250b and the end cover outer peripheral portion inner surface portion 4190b of the end cover 40, and the sealing member 43 are in close contact with each other. The sealing structure 100 of the lamp 3 maintains water stopping properties.

(Modification 3)
FIG. 13 is a schematic diagram illustrating a third modification of the sealing structure 100 of the lamp 3 according to the embodiment of the present invention. The lighting fixture 3 of Modification 3 is a modification using an end cover 40c in which a first end cover 41 and a second end cover 42 are integrally formed. The end cover 40c is formed as one piece. The end cover inner peripheral outer surface portion 4250c is the outer peripheral surface of the end cover inner peripheral portion 425 and forms an inclined surface as a first inclined portion.

In the first direction (longitudinal direction X), the inner peripheral outer surface portion 4250c of the end cover, which is the first inclined portion, increases in the first direction (longitudinal direction) from the second cover main portion 420 toward the first cover main portion 410. X) so that the distance from the end 36 increases in the second direction. That is, the end cover inner peripheral portion 425, which is the inner wall portion, is provided so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. An end cover inner peripheral outer surface portion 4250c, which is a first inclined portion, is formed. In other words, the inner peripheral outer surface portion 4250c of the end cover extends in the first direction (longitudinal direction X) toward the second cover main portion 420 from the first cover main portion 410. X) so that the distance from the end portion 36 decreases in the second direction. That is, the end cover inner peripheral portion 425, which is the inner wall portion, is provided so that the distance from the end portion 36 in the second direction becomes smaller as the distance from the end portion 36 of the translucent cover 30 toward the center in the first direction becomes smaller. An end cover inner peripheral outer surface portion 4250c, which is a first inclined portion, is formed. The inclination angle θ2 of the end cover inner peripheral outer surface portion 4250c with respect to the reference line T along the longitudinal direction X satisfies the inclination angle θ2>0°.

In addition, the end cover outer peripheral inner surface portion 4190c forms an inclined surface as a second inclined portion corresponding to the first inclined portion. In the first direction (longitudinal direction X), the outer peripheral portion inner surface portion 4190c of the end cover intersects the first direction (longitudinal direction X) from the first cover main portion 410 toward the second cover main portion 420 side. It is inclined so that the distance from the end portion 36 becomes smaller in two directions. That is, the outer wall portion 410a has a second inclined portion that is inclined so 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 end cover outer peripheral inner surface portion 4190c is formed. In other words, the end cover outer peripheral inner surface portion 4190c, which is the second inclined portion, is inclined 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 increases in the intersecting second direction. That is, the outer wall portion 410a has a second inclined portion that is inclined so that the distance from the end portion 36 in the second direction increases as the distance from the center of the translucent cover 30 toward the end portion 36 increases in the first direction. An end cover outer peripheral inner surface portion 4190c is formed. The inclination angle θ4 of the end cover outer peripheral portion inner surface portion 4190c with respect to the reference line T along the longitudinal direction X satisfies the inclination angle θ4>0°.

As described above, the end cover 40c is formed as one component. The end cover 40c has an end cover inner peripheral outer surface portion 4250c as a first inclined portion and an end cover outer peripheral inner surface portion 4190c as a second inclined portion. Therefore, as described above, the degree of close contact between the translucent cover 30 and the end cover 40c and the sealing member 43 is strengthened, and the translucent cover 30 and the sealing member 43 are less likely to come off from the end cover 40c. Become. In addition, the end portion 36 of the translucent cover 30, the end cover inner peripheral portion outer surface portion 4250c and the end cover outer peripheral portion inner surface portion 4190c of the end cover 40c, and the sealing member 43 are in close contact with each other. Water resistance is maintained. In addition, the end cover 40c, in which a plurality of parts are integrated, can reduce the number of parts constituting the end cover 40c, and can reduce the number of processes for assembling the lamp 3. FIG.

As shown in the sealing structure 100 and modifications 1 to 3, the lamp 3 and the sealing structure 100 have a first An inclined portion is formed which is composed of an inclined portion or a second inclined portion. That is, the inclined portion is formed on at least one of the outer wall portion 410a and the end cover inner peripheral portion 425, which is the inner wall portion. In the first direction, which is the longitudinal direction X of the lamp fixture 3, the distance between the inclined portion and the end portion 36 in the second direction increases from the center of the translucent cover 30, which is the outer shell, toward the end portion 36. incline. Therefore, as described above, in the lamp 3 and the sealing structure 100 for the lamp 3, the degree of adhesion between the light-transmitting cover 30 and the end cover 40 and the sealing member 43 is strengthened, and the light-transmitting cover 30 and the sealing structure 100 are tightly attached to each other. The stopper 43 becomes difficult to come off from the end cover 40 . In addition, the end portion 36 of the translucent cover 30, the end cover inner peripheral portion outer surface portion 4250c and the end cover outer peripheral portion inner surface portion 4190c of the end cover 40, and the sealing member 43 are in close contact with each other. The sealing structure 100 of the lamp 3 maintains water stopping properties.

(Modification 4)
FIG. 14 is a schematic diagram illustrating a fourth modification of the sealing structure 100 of the lamp 3 according to the embodiment of the invention. In the lamp fixture 3 of Modified Example 4, an inner peripheral inner surface projecting portion 4351 is formed on an inner peripheral inner surface portion 4350 of an inner peripheral portion 435 . The inner peripheral portion inner surface portion 4350 is the inner peripheral portion 435 facing the end cover inner peripheral portion 425 which is the inner wall portion in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. is the wall surface of The inner peripheral inner surface projecting portion 4351 is a convex portion formed on the inner peripheral inner surface portion 4350 of the inner peripheral portion 435 . In addition, the convex portion is a portion that protrudes from the wall portion. The inner peripheral inner surface projecting portion 4351 is annularly formed along the inner peripheral inner surface portion 4350 of the inner peripheral portion 435 . The inner peripheral inner surface projecting portion 4351 may be formed singly or plurally on the inner peripheral inner surface portion 4350 of the inner peripheral portion 435 in the longitudinal direction X of the lamp 3 . The lamp 3 is formed with an inner peripheral inner surface projecting portion 4351 on an inner peripheral inner surface portion 4350 of the inner peripheral portion 435, thereby reducing the wall thickness while maintaining the waterproofness (adhesiveness) of the sealing member 43. be able to. As a result, the lamps 3 and the sealing structure 100 for the lamps 3 can be made of fewer materials, and material costs can be reduced.

In the lamp fixture 3 of Modified Example 4, an inner peripheral outer surface projecting portion 4353 is formed on an inner peripheral outer surface portion 4352 of an inner peripheral portion 435 . The inner peripheral outer surface portion 4352 is formed on the inner peripheral portion 435 facing the end portion 36 of the translucent cover 30 in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. It is a wall part. The inner peripheral outer surface projecting portion 4353 is a convex portion formed on the inner peripheral outer surface portion 4352 of the inner peripheral portion 435 . The inner peripheral outer surface projecting portion 4353 is annularly formed along the inner peripheral outer surface portion 4352 of the inner peripheral portion 435 . The inner peripheral outer surface projecting portion 4353 may be formed singly or plurally on the inner peripheral outer surface portion 4352 of the inner peripheral portion 435 in the longitudinal direction X of the lamp 3 . The lamp 3 has an inner peripheral outer surface projecting portion 4353 formed on an inner peripheral outer surface portion 4352 of the inner peripheral portion 435, so that the sealing member 43 can be thinned while maintaining the waterproofness (adhesiveness) of the sealing member 43. can be planned. As a result, the lamps 3 and the sealing structure 100 for the lamps 3 can be made of fewer materials, and material costs can be reduced.

In the lamp fixture 3 of Modified Example 4, an outer peripheral inner surface projecting portion 4371 is formed on an outer peripheral inner surface portion 4370 of an outer peripheral portion 437 . The outer peripheral inner surface portion 4370 is a wall surface portion of the outer peripheral portion 437 facing the end portion 36 of the translucent cover 30 in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. be. The outer peripheral inner surface projecting portion 4371 is a convex portion formed on the outer peripheral inner surface portion 4370 of the outer peripheral portion 437 . The outer peripheral inner surface projecting portion 4371 is annularly formed along the outer peripheral inner surface portion 4370 of the outer peripheral portion 437 . The outer peripheral inner surface projecting portion 4371 may be formed singly or plurally on the outer peripheral inner surface portion 4370 of the outer peripheral portion 437 in the longitudinal direction X of the lamp 3 . The lamp fixture 3 can be made thinner while maintaining the waterproofness (adhesiveness) of the sealing member 43 by forming the outer peripheral inner surface protruding part 4371 on the outer peripheral inner surface part 4370 of the outer peripheral part 437 . . As a result, the lamps 3 and the sealing structure 100 for the lamps 3 can be made of fewer materials, and material costs can be reduced.

In the lamp fixture 3 of Modified Example 4, an outer peripheral outer surface projecting portion 4373 is formed on an outer peripheral outer surface portion 4372 of the outer peripheral portion 437 . The outer peripheral portion outer surface portion 4372 is a wall surface portion of the outer peripheral portion 437 facing the outer wall portion 410a in a state in which the translucent cover 30, the sealing member 43, and the end cover 40 are combined. The outer peripheral portion outer surface projecting portion 4373 is a convex portion formed on the outer peripheral portion outer surface portion 4372 of the outer peripheral portion 437 . The outer peripheral outer surface projecting portion 4373 is annularly formed along the outer peripheral outer surface portion 4372 of the outer peripheral portion 437 . The outer peripheral portion outer surface projecting portion 4373 may be formed singly or plurally on the outer peripheral portion outer surface portion 4372 of the outer peripheral portion 437 in the longitudinal direction X of the lamp 3 . The lamp 3 is formed with an outer peripheral outer surface projecting portion 4373 on the outer peripheral outer surface portion 4372 of the outer peripheral portion 437, so that the sealing member 43 can be thinned while maintaining the water stoppage (adhesiveness) of the sealing member 43. can. As a result, the lamps 3 and the sealing structure 100 for the lamps 3 can be made of fewer materials, and material costs can be reduced.

In the lamp fixture 3 of Modified Example 4, any one of an inner peripheral inner surface projecting portion 4351, an inner peripheral outer surface projecting portion 4353, an outer peripheral inner surface projecting portion 4371, and an outer peripheral outer surface projecting portion 4373 is formed. may be formed, or two or more may be formed.

As described above, the lighting device 1 has the lamp 3 or the sealing structure 100 for the lamp 3 , so that the above-described effects of the lamp 3 or the sealing structure 100 for the lamp 3 can be obtained.

FIG. 15 is a cross-sectional view showing a reference layout of the telescopic structure 110 according to the embodiment of the present invention. FIG. 16 is a cross-sectional view showing the arrangement of the translucent cover 30 in the stretched state in the stretchable structure 110 according to the embodiment of the present invention. FIG. 17 is a cross-sectional view showing the arrangement of the translucent cover 30 in the contracted state in the elastic structure 110 according to the embodiment of the present invention. The telescopic structure 110 is provided in the lamp 3 so that the end portion 36 and the end cover 40, which are fitting portions of the translucent cover 30, are free ends where movement in the longitudinal direction X (first direction) is not restricted. It is the part that was removed.

The telescopic structure 110 has a translucent cover 30 as an outer shell and an end cover 40 as an end lid attached to the translucent cover 30 . In addition, the telescopic structure 110 is arranged outside the end cover 40 in the first direction, which is the longitudinal direction X, and is fixed to the mounting member 50 penetrating the end cover 40, which is a part of the end cover. In addition, the other part is provided with a connection member 44 fixed to the lighting fixture 2 . In the elastic structure 110, the end portion 36 and the end cover 40 are movable along the first direction, which is the longitudinal direction X, in the range of motion M provided between the mounting member 50 and the connecting member 44. formed. In addition, the telescopic structure 110 is attached to the end portion 36 in close contact with the end portion 36 to the sealing member 43, which is an elastic member disposed between the end portion cover 40 and the end portion 36. ing. The telescopic structure 110 also has a fixture 54 through which the mounting member 50 passes through the end cover 40 as an end lid and to which the connecting member 44 is fixed. The elastic structure 110 moves while the sealing member 43 , which is an elastic member, is in close contact with the fixture 54 . The movable range M of the lamp 3 and the telescopic structure 110 of the lamp 3 shown in FIG. This is the clearance provided between 50 and the connecting member 44 . The range of motion M, which is the clearance, also has a function of absorbing dimensional errors associated with variations in manufacturing of each part or variations in assembly of the lamp 3 . In the telescopic structure 110 , the end portion 36 is movable along the first direction, which is the longitudinal direction X, together with the end cover 40 in the movable range M of the lamp 3 provided between the mounting member 50 and the connecting member 44 . free end. As described above, the end cover 40 is attached to the end portion 36 in close contact with the end portion 36 to the sealing member 43 sandwiched between the end portion 36 and the end portion cover 40 . Therefore, the sealing member 43 which is an elastic member moves along the first direction, which is the longitudinal direction X, in the movable range M together with the end cover 40 .

As shown in FIG. 15, as the placement standard 1, the end cover 40 is placed in the movable range M of the lamp 3 while being separated from the mounting member 50 and the connecting member 44 under the standard installation environmental conditions based on the standard temperature and standard humidity. are placed. As shown in FIG. 15, under the reference installation environment conditions, the end cover 40 has a range (first movable range M1) in which the end cover 40 can move from the position P1 to the position P2 in the longitudinal direction X of the lamp 3. , the end cover 40, the closure 43, and the translucent cover 30 are arranged. The standard installation environmental conditions are environmental conditions based on a normal temperature (for example, 25° C.) as a standard temperature and normal humidity (for example, relative humidity of 40% to 50%) as a standard humidity. It is also a condition. As shown in FIG. 15, the position P1 is the installation position of the first cover main portion 410 of the end cover 40 in the longitudinal direction X of the lamp 3 . 1 is the installation position of the surface of the cover main portion 410 facing the fixing portion 46 of the connecting member 44 . The position P2 is the setting position of the fixing portion 46 of the connecting member 44 in the longitudinal direction X of the lamp 3. More specifically, the first cover main portion 410 of the fixing portion 46 in the longitudinal direction X of the lamp 3 is It is the installation position of the surface facing the wall surface that constitutes. That is, the end cover 40 is arranged in the range of motion M while being separated from the fixing portion 46 of the connecting member 44 . Moreover, since the sealing member 43 is sandwiched between the end cover 40 and the mounting member 50 , the end cover 40 is not in direct contact with the mounting member 50 and is separated from the mounting member 50 .

The first movable range M1 is a space formed between the installation position of the first cover main portion 410 of the end cover 40 and the installation position of the fixing portion 46 of the connecting member 44 in the longitudinal direction X of the lamp 3. , which is the distance between the installation position of the first cover main portion 410 and the installation position of the fixing portion 46 . The first range of motion M1 is a region for accommodating the movement of the end portion 36 and the end portion cover 40 accompanying the extension of the translucent cover 30 . The size of the first range of motion M1 is determined, for example, within a range from the maximum extension dimension G of the translucent cover 30 to half the maximum extension dimension G (G/2). If the stretchable structure 110 is provided only at one end of the lamp 3 in the longitudinal direction X (first direction), it is preferable that the maximum stretchable dimension G of the translucent cover 30 be the first movable range M1. When the stretchable structure 110 is provided at both ends of the lamp 3 in the longitudinal direction X (first direction), the first movable range M1 may be half the maximum stretched dimension G of the translucent cover 30 (G/2). is.

As shown in FIG. 15, the end cover 40 is designed so that the space between the end cover 40 and the connecting member 44 is larger than the space between the mounting member 50 and the mounting member 50 under the standard installation environment conditions based on the standard temperature and humidity. It is arranged in the range of motion M of 3. More specifically, under the standard installation environment conditions based on the reference temperature and the reference humidity, the end cover 40 has a larger distance between the connecting member 44 and the fixing portion 46 than between the mounting member 50 and the fixture 54 . is arranged in the movable range M of the lamp 3 so that the At this time, the end cover 40 is arranged in close proximity to the mounting member 50 with the sealing member 43 therebetween.

The end cover 40 may be arranged in the movable range so that the distance between the end cover 40 and the mounting member 50 is larger than the distance between the connecting member 44 and the connecting member 44 under the reference installation environment conditions based on the reference temperature and humidity. . More specifically, under the standard installation environment conditions based on the reference temperature and the reference humidity, the end cover 40 has a larger distance between the mounting member 50 and the fixture 54 than between the connecting member 44 and the fixing part 46 . may be arranged in the range of motion M of the lamp 3 so that the For example, it is an example of arrangement of the end cover 40 assuming a case where the amount of contraction of the translucent cover 30 is large, such as when the temperature of the environment in which the lamp 3 is used is extremely low.

The mounting member 50 has a fixture 54 that passes through the end cover 40 and to which the connecting member 44 is fixed. As described above, it is the boss portion 57 of the fixture 54 that the connecting member 44 is fixed. The boss portion 57 of the fixing member 54 slides in the boss insertion hole of the sealing member tubular portion 433 while being in close contact with the sealing member tubular portion 433 , which is the tubular portion of the sealing member 43 . can do. The sealing member 43 is an elastic member, and by having this configuration, it is possible to configure the elastic structure 110 that maintains the waterproofness of the lamp 3 .

When the installation environment temperature, the installation environment relative humidity, or the operating temperature of the lamp 3 rises and the light-transmitting cover 30 extends, the end cover 40 and the end 36 of the light-transmitting cover 30 are positioned relative to each other. moves outward in the longitudinal direction X (in the direction of X1) without changing. When the end cover 40 and the end 36 of the translucent cover 30 move, the sealing member 43 is in close contact with the end cover 40 , the end 36 of the translucent cover 30 , and the boss 57 to hold the lamp 3 . maintains the waterproofness (sealed state) of

As shown in FIG. 15, as the placement reference 2, under the reference installation environment conditions, the light-transmitting cover 30 has a range (second movable range M2) in which the light-transmitting cover 30 can move from the position P3 to the position P4. A part cover 40, a sealing member 43, and a translucent cover 30 are arranged. A position P3 is the position of the cover edge 35 of the translucent cover 30, and a position P4 is the position of the fixture 54 of the mounting member 50. As shown in FIG. That is, the second movable range M2 is the distance between the cover end 35 and the fixture 54 in the longitudinal direction X of the lamp 3 . The second range of motion M2 is a region for accommodating movement of the end portion 36 and the end portion cover 40 due to contraction of the translucent cover 30 . The second range of motion M2 is determined, for example, within a range from the maximum shrinkage dimension S of the translucent cover 30 to half the maximum shrinkage dimension S (S/2). If the telescopic structure 110 is provided only at one end of the lamp 3 in the longitudinal direction X (first direction), it is preferable that the maximum contraction dimension S be the second range of motion M2. If the telescopic structures 110 are provided at both ends of the lamp 3 in the longitudinal direction X (first direction), the second range of motion M2 may be half the maximum contraction dimension S (S/2).

As shown in FIG. 16, the end cover 40 can move to a position P2 with reference to the position P1 shown in FIG. The cover 40 can be moved from the position P1 to the position P2 by the movement distance. As shown in FIG. 16, the lighting device 3 has a longitudinal direction of the lighting device 2 when the light-transmitting cover 30 is stretched to the maximum, that is, when the light-transmitting cover 30 is stretched to the maximum within the range of the first movable range M1. Do not exceed the maximum dimension in direction X (first direction). By not exceeding the maximum dimension in the longitudinal direction X of the lighting fixture 2 in a state in which the translucent cover 30 is stretched to the maximum within the range of the first movable range M1, the lighting device 1 is brought closer in the longitudinal direction. Even when the lighting devices 1 are installed in parallel, the lighting fixtures 3 of the respective lighting devices 1 do not collide with each other. A third movable range M3 shown in FIG. 16 is a range of movement of the end cover 40 and the sealing member 43 up to a position P6 based on the position P5. Position P5 is the position of the second cover main portion 420 of the second end cover 42, and position P6 is the position of the fixture 54 of the mounting member 50. As shown in FIG. That is, the third movable range M3 is the distance between the second cover main portion 420 and the fixture 54 in the longitudinal direction X of the lamp 3 . The third range of motion M3 is a range of motion in which the translucent cover 30 shrinks (returns) from the maximum stretched state to the standard size, and is substantially the same as the first range of motion M1.

As shown in FIG. 15, under the standard installation environment conditions, a gap is formed between the head of the connection screw 48 and the tubular wall portion of the connection guide 413 . Therefore, as shown in FIG. 16, even if the end cover 40 moves along with the extension of the end portion 36 in the longitudinal direction X, the connecting screw 48 does not interfere with the cylindrical wall portion of the connecting guide 413. . As a result, the connecting screw 48 does not hinder the movement of the end cover 40 on which the connecting guide 413 is formed.

FIG. 17 shows an example of the arrangement of the end cover 40, the sealing member 43, and the translucent cover 30 when the translucent cover 30 is contracted within the second movable range M2. As shown in FIG. 17, when the translucent cover 30 shrinks, the end portion 36 of the translucent cover 30 may move, for example, as shown at position P7.

As described above, the lamp 3 includes the end cover 40 attached to the translucent cover 30, which is the outer shell, while covering the end 36 forming the opening. Further, the lamp 3 is fixed to a mounting member 50 that is disposed outside the end cover 40 and partially penetrates the end cover 40 in the first direction, which is the longitudinal direction X of the lamp 3 . In addition, the other part is provided with a connection member 44 fixed to the lighting fixture 2 . And the end portion 36 is movable along the first direction. Therefore, it is not necessary to form a hole for fixing the lamp 3 in the light-transmitting cover 30, which is the outer shell, and the end portion 36 of the light-transmitting cover 30 can be moved while maintaining the waterproofness of the light-transmitting cover 30. It can be formed freely. As a result, the lamp 3 and the expansion/contraction structure 110 of the lamp 3 can be expanded/contracted while maintaining the waterproof property. In addition, since the lamp 3 and the telescopic structure 110 of the lamp 3 do not have a hole for fixing the lamp 3 to the light-transmitting cover 30, it is possible to avoid adopting a method that leads to an increase in cost, such as a waterproof washer. can.

Further, the end portion 36 is formed to be movable along the first direction together with the end cover 40 as the end lid as the translucent cover 30 as the outer shell expands and contracts. As a result, the lamp 3 can expand and contract while maintaining water cutoff properties.

In addition, in the movable range M formed between the mounting member 50 and the connecting member 44, the end portion 36 moves along with the end cover 40 as the end lid as the translucent cover 30, which is the outer shell, expands and contracts. It is movable along one direction. As a result, the lamp 3 can expand and contract while maintaining water cutoff properties.

Further, the end cover 40, which is an end cover, is arranged in the movable range M in a state separated from the mounting member 50 and the connecting member 44 under the reference installation environmental conditions based on the reference temperature and the reference humidity. Therefore, even if the light-transmitting cover 30 expands and contracts due to changes in the environmental conditions, the lamp 3 has a region where the end 36 of the light-transmitting cover 30 and the end cover 40 to which the light-transmitting cover 30 is attached move. is ensured, and movement of the end 36 and the end cover 40 is not hindered.

Further, the end cover 40, which is an end cover, is movable so that the distance between it and the connecting member 44 is larger than the distance between it and the mounting member 50 under the standard installation environment conditions based on the standard temperature and humidity. located in area M. Therefore, even if the light-transmitting cover 30 expands greatly due to changes in environmental conditions, such as when the operating environment temperature is extremely high, the end portion 36 and the end cover 40 of the lamp 3 do not move. It is secured and the movement of the end 36 and the end cover 40 is not hindered. In addition, since the lighting fixture 3 has the range of motion M, it is possible to absorb dimensional errors due to variations in the manufacture of each part or variations in the assembly of the lighting fixture 3 .

Also, the end cover 40, which is an end cover, is movable so that the distance between it and the mounting member 50 is larger than the distance between it and the connecting member 44 under the standard installation environment conditions based on the standard temperature and humidity. It is located in area M. Therefore, even if the amount of contraction of the light-transmitting cover 30 is large due to changes in environmental conditions, such as when the operating environment temperature is extremely low, the area where the end portion 36 and the end portion cover 40 move is limited. It is secured and the movement of the end 36 and the end cover 40 is not hindered.

The end cover 40, which is the end cover, is attached to the end 36 in close contact with the end 36 to the elastic member 43, which is sandwiched between the end cover 40 and the end 36. . As a result, the lamp 3 can expand and contract while maintaining its waterproof properties.

The mounting member 50 also has a fixture 54 that passes through the end cover 40 as an end lid and to which the connecting member 44 is fixed. Move in close contact. As a result, the lamp 3 and the expansion/contraction structure 110 of the lamp 3 can expand/contract while maintaining the water cutoff property.

As described above, the lighting apparatus 1 has the lamp 3 or the expansion/contraction structure 110 of the lamp 3 , thereby achieving the above-described effects of the lamp 3 or the expansion/contraction structure 110 of the lamp 3 .

It should be noted that the lamp fixture 3 in this embodiment and the modified example may have the end cover 40 and the sealing member 43 attached to either end in the longitudinal direction X. FIG. Further, the lighting device 1 in the present embodiment and the modified example has been described by exemplifying the 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 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. Furthermore, in the present embodiment and the modified example, the lighting fixture 2 and the lamp fitting 3 that constitute the lighting device 1 are both elongated. Alternatively, the lighting fixture 2 to which the lamp fixture 3 is attached may be of a short length. good.

The embodiments and modifications of the present invention have been described above, but these embodiments and modifications may be combined for implementation. Alternatively, one of these embodiments and modifications may be partially implemented. Alternatively, these 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 part 20 fixture body 21 fixture bottom face part 22 fixture side face part 23 fixture end part 24 knockout 25 mounting part 26 opening end 27 connecting portion 28 screw hole 30 translucent cover 31 parallel portion 32 first connection portion 33 second connection portion 34 rib 35 cover end portion 36 end portion 37 outer peripheral portion; 38 inner periphery 40 end cover 40c end cover 41 first end cover 42 second end cover 42a second end cover 43 closure 43a closure 44 connecting member 45 connecting part, 46 fixing part, 47 engaging part, 48 connecting screw, 49 cover lid, 50 mounting member, 51 pedestal, 52 mounting surface part, 53 side part, 54 fixture, 55 mounting part, 56 fixing part, 57 boss Part 58 Screw hole 60 Light emitting part 61 Light emitting element 62 Substrate 70 Substrate capturing member 75 Fixing screw 80 Control part 81 Power supply line 82 Grounding line 83 Control line 84 Feeding line 100 Sealing structure , 110 telescopic structure 410 first cover main portion 410a outer wall portion 411 first cover through hole 412 first cover connecting hole 413 connecting guide 414 cover lower surface portion 415 cover lower surface through hole 416 cover electric wire holding portion , 417 cover end surface portion, 418 cover end surface through hole, 419 end cover outer peripheral portion, 420 second cover main portion, 421 end cover insertion portion, 421a insertion wall, 422 second cover engaging piece, 423 second cover engaging piece 425 end cover inner peripheral portion 426 cover collar portion 430 closure main portion 431 wire insertion portion 432 wire insertion hole 433 closure tubular portion 434 screw insertion hole 435 inner peripheral portion , 436 connection portion, 437 outer peripheral portion, 450 stepped portion, 451 connection screw insertion portion, 460 fixing screw insertion hole, 461 engagement piece insertion hole, 470 electric wire insertion hole, 472 insertion hole, 480 retaining washer, 481 shaft portion, 520 Screw hole 521 Notch 522 Mounting hole 701 Catching part 702 Engaging part 4190 End cover outer peripheral inner surface 4190a End cover outer peripheral inner surface 4190b end cover outer peripheral inner surface 4190c end cover outer peripheral inner surface 4250 end cover inner peripheral outer surface 4250a end cover inner peripheral outer surface 4250b end cover inner peripheral outer surface 4250c end cover inner Peripheral outer surface portion 4350 Inner peripheral inner surface portion 4351 Inner peripheral inner surface protruding portion 4352 Inner peripheral outer surface portion 4353 Inner peripheral outer surface protruding portion 4370 Outer peripheral inner surface portion 4371 Outer peripheral inner surface protruding portion 4372 4373 outer peripheral outer surface projecting portion 4710 upper slit 4711 end slit;

Claims (11)

A lighting fixture that constitutes a lighting device by being attached to a lighting fixture,
an outer shell covering a light emitting surface of a light emitting element arranged on the mounting member and having an opening formed at an end portion in a first direction along the longitudinal direction of the mounting member;
an end cover attached to the outer shell in a state of covering the end forming the opening;
It is arranged outside the end lid in the first direction, partly fixed to the mounting member passing through the end lid in the first direction, and the other part attached to the lighting fixture. a connecting member to be fixed;
with
The lamp, wherein the end portion is movable along the first direction. The ends are
2. The lamp according to claim 1, wherein the lamp is movable along the first direction together with the end cover as the outer shell expands and contracts. The ends are
3. The movable range formed between the mounting member and the connecting member is movable along the first direction together with the end cover as the outer shell expands and contracts. of lamps. The end caps are
Under standard installation environmental conditions based on standard temperature and standard humidity,
4. The lamp according to claim 3, wherein the lamp is arranged in the movable range while being separated from the mounting member and the connecting member. The end caps are
Under standard installation environmental conditions based on standard temperature and standard humidity,
5. The lamp according to claim 3, wherein the lamp is arranged in the movable range such that the distance between the connecting member and the connecting member is larger than the distance between the mounting member and the mounting member. The end caps are
Under standard installation environmental conditions based on standard temperature and standard humidity,
5. The lamp according to claim 3, wherein the lamp is arranged in the movable range such that the distance between the mounting member and the connecting member is larger than the distance between the connecting member and the connecting member. The end caps are
7. The lamp according to any one of claims 1 to 6, wherein the lamp is attached to an elastic member sandwiched between the end and the end while being in close contact with the end. The mounting member is
a fixture passing through the end cap and to which the connecting member is fixed;
The elastic member is
8. The lighting device according to claim 7, wherein the lighting device moves in close contact with the fixture. A telescopic structure of a lighting fixture that constitutes a lighting device by being attached to a lighting fixture,
an outer shell covering a light emitting surface of a light emitting element arranged on the mounting member and having an opening formed at an end portion in a first direction along the longitudinal direction of the mounting member;
an end cover attached to the outer shell in a state of covering the end forming the opening;
It is arranged outside the end lid in the first direction, partly fixed to the mounting member passing through the end lid in the first direction, and the other part attached to the lighting fixture. a connecting member to be fixed;
with
The end and the end cap are
A telescopic structure for a lamp that is movable along the first direction in a movable range provided between the mounting member and the connecting member. The end caps are
attached to the end portion in a state of being in close contact with the end portion to an elastic member sandwiched between the end portion;
The mounting member is
a fixture passing through the end cap and to which the connecting member is fixed;
The elastic member is
10. The telescopic structure of the lamp according to claim 9, wherein the lamp moves while being in close contact with the fixture. A lighting device comprising the lamp according to any one of claims 1 to 8, or the telescopic structure of the lamp according to claim 9 or 10.

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