CN109163261B

CN109163261B - Lighting apparatus

Info

Publication number: CN109163261B
Application number: CN201811064889.4A
Authority: CN
Inventors: 坂本哲也; 角野太一; 斋藤公史
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Priority date: 2014-02-27
Filing date: 2015-02-23
Publication date: 2021-04-27
Anticipated expiration: 2035-02-23
Also published as: WO2015129637A1; CN109140321A; CN106030205B; CN109140321B; CN109163261A; CN106030205A

Abstract

The spring (130) is provided with a 1 st flat portion (L1), a 1 st curved portion (M1), a 2 nd flat portion (L2), a 2 nd curved portion (M2), a 3 rd flat portion (L3), a 3 rd curved portion (M3), a 4 th flat portion (L4), a 4 th curved portion (M4), an arc portion (E), and a bent portion (K). The 1 st bent portion (M1), the 2 nd flat portion (L2), the 2 nd bent portion (M2), the 3 rd flat portion (L3), the 3 rd bent portion (M3), the 4 th flat portion (L4), the 4 th bent portion (M4), the arc portion (E), and the bent portion (K) constitute an arc-shaped portion.

Description

Lighting apparatus

The patent application of the invention is a divisional application of the patent application with the application number of 201580010662.X (international application number of PCT/JP2015/055083), the application date of 2015, 02 and 23 and the invention name of "spring for lighting device, lighting device and lighting fixture".

Technical Field

The invention relates to a spring used for a lighting device, the lighting device and a lighting fixture.

Background

In recent years, lighting fixtures using LEDs as light sources have been used in place of lighting fixtures for fluorescent lamps. A lighting fixture using LEDs has a structure in which a light source unit on which LEDs are arranged is detachably fixed to a main body unit fixed to a surface to be mounted such as a ceiling, as in a conventional lighting fixture for fluorescent lamps.

As a method of attaching the light source unit and the main body unit, there is a method of attaching: in a lighting fixture in which a light source unit is inserted and mounted in a recess provided in a main body unit, a spring member provided on a side surface of the light source unit is inserted into the recess while being elastically deformed, and engages with hardware provided in the recess and fixing the light source unit, thereby coupling the light source unit and the main body unit (for example, patent document 1).

Further, there is a mounting method in which a light source unit including a lighting device is mounted on a main body unit, and there is a mounting method in which: a groove portion is formed over the entire length of a side surface of a light source portion provided with a lighting device, and a claw portion that engages with the entire length of the groove portion of the light source portion is provided in a main body portion, and engagement is performed over the entire length of the side surface, whereby the weight load of the light source portion is dispersed, and deformation of the claw portion is prevented (for example, patent document 2).

In addition, there is a mounting method in which: a fitting portion is provided on a side surface of the main body portion and a side surface of the light source portion, the fitting portion serves as a center of rotation, and the light source portion is attached so as to rotate toward the inside of the main body portion (for example, patent document 3).

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-80592

Patent document 2: international publication No. 2010/095710

Patent document 3: japanese patent laid-open publication No. 2011-060718

Disclosure of Invention

Problems to be solved by the invention

In the lighting fixture of patent document 1, the light source unit and the main body unit are connected by a plurality of spring members, and if the plurality of spring members are not simultaneously inserted into the corresponding fixing hardware, stress is applied to the spring units, which may cause deformation of the spring units and failure of the lighting fixture.

In the lighting apparatus of patent document 2, the groove portion and the claw portion are fitted to each other over the entire length of the side surface. Therefore, when the light source unit is detached from the main body, a dedicated jig is required to simultaneously press the entire length of the fitting and release the fitting state between the groove and the claw.

Further, since the lighting fixture of patent document 3 has a rotatable fitting shape, it is necessary to provide a gap between the lighting fixture and the ceiling so that the light source side surface portion can rotate. Further, the side surface facing the fitting portion is fixed by a screw, which affects appearance.

In the lighting fixture in which the light source unit and the main body unit are detachable, the light source unit can be easily connected to the main body unit by the spring unit.

Means for solving the problems

The spring for a lighting device of the present invention is an elongated plate spring used for a lighting device, and is characterized by comprising:

a flat part facing the length direction; and

an arc-shaped portion of an arc shape starting from a tip of the flat portion, the arc-shaped portion having a protruding portion bent into a protruding shape at a start of the arc shape.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, in an illumination device in which a light source unit and a main body unit are detachable, the light source unit can be easily connected to the main body unit by a spring unit.

Drawings

Fig. 1 is a view showing embodiment 1, and is a perspective view of a lighting fixture 1000.

Fig. 2 is a view showing embodiment 1, and is an exploded perspective view of a lighting fixture 1000.

Fig. 3 is a view showing embodiment 1, and is a perspective view of the main body 100.

Fig. 4 is a diagram showing embodiment 1, and is a perspective view of the light source unit 200.

Fig. 5 is a diagram showing embodiment 1, and is an enlarged perspective view of main body 100.

Fig. 6 is a diagram showing embodiment 1, and is a side view of the spring portion 130.

Fig. 7 is a diagram showing embodiment 1, and is a perspective view of the spring portion 130.

Fig. 8 is a diagram showing embodiment 1, and is an enlarged perspective view of the light source unit 200.

Fig. 9 is a diagram showing embodiment 1, and is a perspective view of the coupling hardware 250.

Fig. 10 is a view showing embodiment 1, and is a perspective view of the retaining portion 260.

Fig. 11 is a diagram showing embodiment 1, and is a diagram showing a procedure of mounting the spring portion 130.

Fig. 12 is a diagram showing embodiment 1, and is an enlarged view of the spring portion 130.

Fig. 13 is a diagram illustrating embodiment 1, and is a diagram illustrating a configuration of a lighting fixture 2000 as a modification of the lighting fixture 1000.

Fig. 14 is a view showing embodiment 1, and is a sectional view a-a in fig. 3.

Fig. 15 is a view showing embodiment 1, and is a sectional view B-B in fig. 4.

Fig. 16 is a diagram showing embodiment 1, and is a diagram showing an end portion of the light source unit 200.

Fig. 17 is a diagram showing embodiment 1, and is a perspective view of the light source cover 240.

Fig. 18 is a diagram showing embodiment 1, and is a diagram supplementing fig. 11 (b).

Fig. 19 is a view showing embodiment 2, and is a perspective view of a lighting fixture 1000.

Fig. 20 is a view showing embodiment 2, and is an exploded perspective view of a lighting fixture 1000.

Fig. 21 is a view showing embodiment 2, and is a perspective view of the main body 100.

Fig. 22 is a diagram showing embodiment 2, and is a perspective view of the light source unit 200.

Fig. 23 is a diagram showing embodiment 2, and is an exploded perspective view of the light source unit 200.

Fig. 24 is a diagram showing embodiment 2, and is an enlarged perspective view of the main body 100.

Fig. 25 is a diagram illustrating embodiment 2, and is an enlarged perspective view of the light source unit 200.

Fig. 26 is a diagram illustrating embodiment 2, and is an enlarged perspective view of the light source unit 200.

Fig. 27 is a view showing embodiment 2, and is a perspective view of the retaining portion 260.

Fig. 28 is a diagram showing embodiment 2, and is a perspective view of the coupling hardware 250.

Fig. 29 is a view showing embodiment 2, and is a perspective view of a wire spring 280.

Fig. 30 is a diagram showing embodiment 2, and is a side view of the wire spring 280.

Fig. 31 is a diagram showing embodiment 2, and is a perspective view of a lifting rope 290.

Fig. 32 is a view showing embodiment 2, and is a mounting process diagram.

Fig. 33 is a diagram showing embodiment 2, and is an operation diagram for attaching the spring portion 130.

Detailed Description

Embodiment 1.

With reference to fig. 1 to 18, a configuration of a lighting fixture 1000 (lighting device) according to embodiment 1 will be described. In embodiment 1, as an example of a lighting fixture according to the present invention, a lighting fixture 1000 having an inverted triangular cross-section, which is mounted on a mounted portion such as a ceiling (hereinafter, a ceiling is described as an example of a mounted portion, but the mounted portion is not limited to a ceiling), will be described. In the following description, for convenience, a ceiling surface side (a surface to be mounted) is set as an upper surface side, and a floor surface side (a side opposite to the surface to be mounted) is set as a lower surface side.

Fig. 1 is a perspective view of a lighting fixture 1000. Fig. 2 is an exploded perspective view of the lighting fixture 1000 shown in fig. 1. Fig. 3 is a perspective view of the main body 100 shown in fig. 1. Fig. 4 is a perspective view of the light source unit 200 shown in fig. 1.

(Structure of Lighting apparatus 1000)

As shown in fig. 1 and 2, a lighting fixture 1000 (lighting device) includes a main body 100 provided to be in contact with a ceiling (attached portion), and a light source 200 detachably attached to the main body 100. The light source unit 200 is detachably attached to face the main body unit 100.

(Main body 100)

As shown in fig. 2, the main body 100 includes a terminal block 120 to which a power supply wire drawn from the outside of the lighting fixture 1000 is connected, and a spring portion 130 (lighting device spring) for attaching (fixing) the light source unit 200 to the main body 100.

(concave part 111, mounting part 112, light source fixing part 113, inclined part 114, lid part 115)

As shown in fig. 3, the main body 100 has a recess 111 formed substantially at the center in the longitudinal direction. Fig. 14 is a view showing the recess 111, and is a cross section a-a of fig. 3. As shown in fig. 5 and 14, a mounting portion 112 is formed on the bottom side of the recess 111 to abut against the ceiling. A light source fixing portion 113 (fig. 3) for inserting and fixing a part of the light source unit 200 is formed on the opening portion side (fig. 14). The light source fixing portion 113 includes a light source insertion portion 113a into which the light source unit 200 is inserted and a light source receiving portion 113b that receives the light source unit 200. As shown in fig. 14, the light source insertion portion 113a is a vertical plate constituting both walls of the recess 111. As shown in fig. 14, the light source receiving portion 113b is an upper end of the light source insertion portion 113a and is a start of the inclined portion 114. The light source receiving portion 113b (fig. 14) receives the light source unit 200 by abutting the light source unit 200 (the cover portion 230) at the upper end of the light source insertion portion 113 a. Specifically, the light source receiving portion 113b abuts against the cover abutting portion 230b (fig. 16) to receive the light source unit 200 (the cover portion 230). As shown in fig. 2 and 14, the inclined portion 114 corresponding to the inclined surface having the inverted triangular cross section is formed by the light source receiving portion 113 b. As shown in fig. 2, cover portions 115 are attached to both ends of the main body portion 100 so as to cover the end portions of the recess 111 and the inclined portions 114.

(Power draw-in hole 112a, fixing hole 112b)

As shown in fig. 3, the spring portion 130 and the terminal block 120 are attached to the attachment portion 112 of the main body portion 100. The mounting portion 112 is formed with a power supply drawing hole 112a for drawing in a power supply line for supplying commercial power and a fixing hole 112b for fixing to the ceiling.

(light source 200)

As shown in fig. 4, the light source unit 200 includes an LED unit 210 (not shown in fig. 4), a holding unit 220, a cover unit 230, a light source cover unit 240, a coupling hardware 250 (coupling unit), a stopper unit 260, and a lighting device 270.

(1) The LED unit 210 (fig. 15, 16) is configured by a plurality of LEDs (not illustrated) and a substrate on which the plurality of LEDs are actually mounted.

(2) The holding portion 220 (described later) is mounted with an LED unit 210. Fig. 15 is a section B-B of fig. 4. As shown in fig. 15, the holding portion 220 includes a holding front portion 220a corresponding to the bottom plate and holding side portions 220b corresponding to the side plates on both sides of the holding front portion 220 a.

(3) As shown in fig. 15, the cover part 230 is mounted on the holding part 220 so as to cover the LED unit 210 and perform diffusion control of light irradiated from the LED unit 210.

(4) The light source cover 240 (fig. 4 and 17) is a cover that covers an end of the cover part 230.

(5) The coupling hardware 250 is coupled to the spring portion 130. The attachment hardware 250 is a mating feature of the spring portion 130. Spring portion 130 is a mating feature of attachment hardware 250.

(6) The detachment prevention portion 260 (fig. 10) is a detachment prevention member of the cover portion 230 that prevents the cover portion 230 from detaching from the holding portion 220.

(7) The lighting device 270 (fig. 4) is a device that lights the LED unit 210.

The LED unit 210 is formed to be elongated substantially equal to the longitudinal direction of the lighting fixture 1000 (fig. 1). The LEDs are arranged in one or more rows on the substrate and arranged in the longitudinal direction.

As described above, the holding portion 220 (fig. 8 and 15) has a long cross section including the holding front portion 220a (fig. 8) to which the LED unit 210 is attached and the holding side portions 220b (fig. 15) projecting perpendicularly from both end portions of the holding front portion 220 a. Further, a coupling hardware mount 220c (fig. 4 and 8) for mounting a coupling hardware 250 (fig. 9) coupled to the spring portion 130 is formed on the back surface (upper surface side) of the surface of the holding front surface portion 220a on which the LED unit 210 is mounted.

(cover 230)

The cover portion 230 (fig. 2, 15, and 16) includes a cover claw portion 230a, a cover contact portion 230b, and a cover diffusion portion 230 c.

(1) As shown in fig. 15 and 16, the cover claw portion 230a is engaged with the holding side surface portion 220b and attached to the holding side surface portion 220 b.

(2) As shown in fig. 15, the hood contact portion 230b is located at the same level as the holding front portion 220a (at substantially the same height in the upper direction, that is, at substantially the same height as the lower surface of the holding front portion 220a and the contact surface of the hood contact portion 230 b), and extends outward from the holding front portion 220 a.

(3) The cover diffusion portion 230c (fig. 15) is formed in a substantially arc shape from the outer end of the cover contact portion 230b, and has an elongated shape covering the LED unit 210.

(light source cover 240, FIG. 4, FIG. 17)

The light source cover 240 (fig. 17) is fitted into an end (fig. 16) including the cover contact portion 230b, the cover diffusion portion 230c, and the holding front portion 220a of the cover portion 230, and closes the end.

(Link hardware 250)

The cross section of the coupling hardware 250 (fig. 4, 8, and 9) is formed in a substantially L shape (fig. 12). The coupling hardware 250 is formed of a spring insertion portion 250a and a hardware fixing portion 250b, and is fixed to a coupling hardware mount 220c (fig. 8 and 12) of the holding portion 220.

(spring insertion part 250a)

As shown in fig. 9, the spring insertion portion 250a includes a spring insertion hole 250a-1 (open) that is open for inserting the spring portion 130, a spring receiving portion 250a-2 that bends a portion in the direction of the hardware fixing portion 250b inward from the spring insertion hole 250a-1, and a retaining receiving portion 250a-3 for fixing the retaining portion 260.

(hardware fixing part 250b)

The hardware fixing portion 250b (fig. 9) is abutted against and fixed to the connecting hardware mount 220c (fig. 12), and a spring sliding assistance portion 250b-1 having an end portion bent outward (toward the holding portion 220) is formed.

(retaining part 260)

The retaining portion 260 (fig. 10) is a member that prevents the holding portion 220 (holding side surface portion 220b) and the cover 230 from being disengaged from each other, and the fitting portion 260a is fixed to the coupling fitting 250 by being fitted to the coupling fitting 250. The retaining portion 260 includes an engaging portion 260a that engages so as to cover the coupling hardware 250, and an engaging cover portion 260b that is fitted so as to cover the holding side surface portion 220b and the cover claw portion 230 a. The retaining portion 260 is engaged with the coupling hardware 250 by the clip portion 261a of the fitting portion 260a sandwiching the retaining receiving portion 250a-3 of the coupling hardware 250. As shown in fig. 15, the engagement cover 260b sandwiches the holding side surface 220b and the cover claw 230a to prevent the holding side surface 220b and the cover claw 230a from being disengaged from each other.

(Lighting device 270)

The lighting device 270 (fig. 4) is a device that supplies power from commercial power to the LED unit 210 via the terminal block 120 (fig. 3) and lights the LED unit 210. The lighting device 270 includes a lighting device main body 270a formed in a substantially rectangular parallelepiped shape, and a power supply connector 270b connected to the terminal block 120.

(spring part 130)

The spring portion 130 (fig. 3, 5 to 7) is fixed to the mounting portion 112 (fig. 5) by a screw 118. The spring portion 130 has a function of fixing the light source portion 200 (described with reference to fig. 11 and 12).

The spring portion 130 is an elongated plate spring formed of an elastic material such as a stainless material or a spring steel plate. As shown in fig. 6, the spring portion 130 (spring for a lighting device) includes a 1 st flat portion L1 (flat portion), a 1 st bent portion M1, a 2 nd flat portion L2, a 2 nd bent portion M2, a 3 rd flat portion L3, a 3 rd bent portion M3, a 4 th flat portion L4, a 4 th bent portion M4, an arc portion E, and a bent portion K. The 1 st bent portion M1, the 2 nd flat portion L2, the 2 nd bent portion M2, the 3 rd flat portion L3, the 3 rd bent portion M3 (protrusion), the 4 th flat portion L4, the 4 th bent portion M4, the arc portion E, and the bent portion K constitute an arc-shaped portion. The arc-shaped portion has a 3 rd bent portion M3 as a protruding portion bent into a protruding shape at the beginning of the arc shape. (1) The 1 st flat portion L1 (fixed portion) extends from one end of the elongated shape in the longitudinal direction. The 1 st flat portion L1 is fixed to the mounting portion 112 by screws 118 (fig. 5).

(2) A1 st curved portion M1 is formed at the end of the 1 st flat portion L1 with a 1 st radius of curvature R1. (3) The 2 nd flat portion L2 is bent at a 1 st bending radius R1 at a 1 st angle θ 1, and rises from the 1 st flat portion L1. The 2 nd flat portion L2 serves as a movable shaft (fig. 11).

(4) The 2 nd bent portion M2 is formed at the end of the 2 nd flat portion L2 in an opposite direction to the 1 st bent radius R1 at the 2 nd bent radius R2.

(5) The 3 rd flat portion L3 is bent at an acute 2 nd angle θ 2 by a 2 nd bending radius R2 and extends. (6) The 3 rd bent portion M3 is formed at the end of the 3 rd flat portion L3 with the 3 rd bending radius R3 in an opposite direction to the 2 nd bending radius R2. The 3 rd bent portion M3 controls the sliding of the arc portion E by abutting against the spring receiving portion 250a-2 of the coupling hardware 250 immediately before the light source portion 200 is assembled to the main body portion 100.

(7) The 4 th flat portion L4 is bent at a 3 rd bending radius R3 to an acute 3 rd angle θ 3 and extends. (8) The 4 th bent portion M4 is formed at the end of the 4 th flat portion L4 at the 4 th bending radius R4 in an opposite direction to the 3 rd bending radius R3.

(9) The circular arc portion E is a circular arc-shaped portion which is bent at a 4 th angle θ 4 with a 4 th bending radius R4 being an obtuse angle, extends in the longitudinal direction toward which the 1 st flat portion L1 faces, and is convex in the rising direction of the 2 nd flat portion L2. The arc portion E is a sliding portion that slides in contact with the opening edge portion 250a-1-1 (fig. 9) of the coupling hardware 250.

(10) The bent portion K (hooking portion) is a member in which the end of the arc portion E is bent, and is hooked on the opening edge portion 250a-1-1 of the coupling hardware 250 ((b) of fig. 11).

The 2 nd flat portion L2 is a shaft portion of the spring portion 130 that exerts an elastic action when the light source portion 200 is attached (fig. 11 and 12 described later).

The inner portion M4-1 (the adjacent arc-shaped portion, fig. 12) of the 4 th bend M4 abuts against the opening edge portion 250a-1-1 of the coupling hardware 250 when the spring portion 130 holds the light source unit 200 (fig. 12 described later).

(number of spring parts 130)

The spring portions 130 are provided one on each of the left and right sides of a central axis 117 (fig. 3) that bisects the longitudinal direction of the main body portion 100. Each spring 130 is disposed such that the 1 st flat portion L1 as a fixing portion faces the central axis 117 and the bent portion K faces the lid 115. Thereby, the spring portion 130 is movable and opened in the outward direction (fig. 11 (a)).

(terminal block 120)

The terminal block 120 (fig. 3) is a member for supplying power supplied from a commercial power supply to the light source unit 200, and includes a terminal block connector 120a connected to a power supply connector 270b of the lighting device 270.

(assembling work of light source 200)

Next, the operation of the operator to attach the light source unit 200 (the connecting hardware 250) to the main body unit 100 (the spring unit 130) attached to the ceiling will be described with reference to fig. 11.

In the context of figure 11 of the drawings,

fig. 11 (a) shows a state before the light source unit 200 is attached to the main body 100.

Fig. 11 (b) shows a state in which the operator connects the bent portion K to the connection fitting 250 of the light source unit 200 in a state in which the spring portion 130 is elastically deformed to increase the curvature of the arc portion E of the spring portion 130. Fig. 11 (c) shows a state in which the back side of the arc portion E slides against the opening edge portion 250a-1-1 of the coupling hardware 250.

Fig. 11 (d) shows a state in which the light source unit 200 is attached to the main body unit 100.

(FIG. 11 (a))

In fig. 11 (a), in the main body 100, the 1 st flat portion L1 of the spring portion 130 abuts against and is fixed to the mounting portion 112 by the screw 118 (the same as in fig. 5). The light source unit 200 is not attached to the main body unit 100.

(FIG. 11 (b))

Next, in fig. 11 (b), the spring portion 130 is elastically deformed around the 2 nd flat portion L2 (movable shaft) as a rotation center so that the arc portion E (sliding portion) is perpendicular to the mounting portion 112. The operator inserts the spring part 130 into the spring insertion hole 250a-1 from the bent part K of the spring part 130 with respect to both the connecting hardware 250. The worker hooks the bent portion K of the spring portion 130 to the opening edge portion 250a-1-1 of the spring insertion hole 250a-1 (fig. 9) of the connecting hardware 250, thereby hanging the light source portion 200 on the main body portion 100. Spring 130 as shown in fig. 3, 2 spring 130 are disposed at both end portions of main body 100, and as shown in fig. 18, light source 200 can be held by 2 spring 130 in a state of being substantially parallel to main body 100. When the lighting fixture 1000 is constructed, the operator can perform the operation of connecting the connectors without supporting the light source unit 200 with both hands or with one hand in the state shown in fig. 18.

(FIG. 11 (c))

Next, in fig. 11 (c), when the operator lifts the light source unit 200 upward (in the ceiling direction), the rear surface of the arc portion E of the spring portion 130 slides with respect to the opening edge portion 250a-1-1 of the spring insertion hole 250a-1 by the restoring force of the spring. Although the sliding action of the spring portion 130 (the arc portion E) is caused by the spring portion 130 naturally trying to return to the original shape when the operator lifts the light source portion 200 upward (in the ceiling direction), the operator does not need to pay attention to the spring portion 130, and the spring portion 130 returns to the original shape while sliding with respect to the coupling hardware 250.

(FIG. 11 (d))

Next, in fig. 11 d, when the worker inserts the portion of the cover claw portion 230a of the light source unit 200 into the light source insertion portion 113a of the main body unit 100 (fig. 14), the cover contact portion 230b contacts the light source receiving portion 113 b. At this time, the spring portion 130 abuts against the 3 rd bent portion M3 (slide control portion, slide suppression portion) and the spring receiving portion 250a-2 immediately before the completion of the assembled state of the light source portion 200, so that the sliding of the arc portion E is suppressed. When the worker completes the insertion of the light source unit 200 into the main body 100 (the assembly of the light source unit 200 is completed), the inner portion M4-1 of the 4 th bend M4 of the spring 130 is positioned with respect to the opening edge portion 250a-1-1 in a state of being pushed against the opening edge portion 250a-1-1 of the connecting fitting 250 (fig. 12). At this time, the spring constant of the spring portion 130 when the opening edge portion 250a-1-1 is supported by the inner portion M4-1 is significantly larger than the spring constant of the spring portion when the light source portion 200 is supported by the bent portion K in fig. 11 (b). Since the 1 st flat portion L1 is (fixed) fixed to the main body portion 100 in the spring portion 130, this can be roughly estimated as a cantilever beam having the 1 st flat portion L1 as a fixed end. In the spring portion 130, a linear distance (span) between the 1 st bend M1 and the 4 th bend M4, which are hardly elastically deformed, is, for example, about 1/5 to 1/6 of a distance (span) between the 1 st bend M1 and the bend K. In a cantilever beam, the span affects the spring constant to the third power. Thus, the spring constant in the 4 th bend M4 is 125 times as large as that in the bent portion K if 1/5 is provided, and is 216 times as large as that in the bent portion K if 1/6 is provided. Therefore, when the worker completes the insertion of the light source unit 200 into the main body 100, the opening edge portion 250a-1-1 of the connecting fitting 250 can be supported by the inner portion M4-1 of the 4 th bend M4 of the spring 130. That is, the weight of the light source unit 200 can be supported by the inner portion M4-1 of the 4 th bend M4.

(detachment work of light Source section 200)

Next, a method of detaching the light source unit 200 from the main body unit 100 will be described. The method of detaching the light source part 200 is the reverse order of the mounting method explained by fig. 11.

(1) As shown in fig. 11 (d), the operator pulls down the light source unit 200 substantially horizontally from the state where the light source unit 200 is attached to the main body 100.

(2) The operator pulls down the light source unit 200 through (c) of fig. 11 to the state of (b) of fig. 11, and removes the bent portion K of the spring unit 130 from the spring insertion hole 250a-1 of the coupling hardware 250.

(3) The operator removes the light source unit 200 from the main body 100 in the above order.

Next, the elastic action (action and effect) of the spring portion 130 at the time of mounting will be described. Fig. 12 is an enlarged view of the periphery of the 2 nd flat portion L2 (movable shaft) of the spring portion 130 at the time of attachment in embodiment 1. In fig. 12, the broken line indicates the spring portion 130 (as the spring portion 130a) in a state where it is not elastically deformed (the state of fig. 11 (a)), and the solid line indicates the spring portion 130 (as the spring portion 130b) in a state where the elastically deformed state of the light source unit 200 is held by the inner portion M4-1 (the state of fig. 11 (d)).

In fig. 12, the inner portion M4-1 (indicated by a black dot) in the spring portion 130b (solid line) is in the following state as compared with the portion corresponding to the inner portion M4-1 of the spring portion 130a (broken line) (the position of the mark when the inner portion M4-1 is marked with a mark in the spring portion 130b (solid line) and returned to the state of the spring portion 130a (broken line)). That is, the spring portion 130B (solid line) holds the light source unit 200 (the coupling hardware 250) in a state of being horizontally elastically deformed by the dimension a in the direction of the 1 st flat portion L1 and being elastically deformed by the dimension B in the downward direction.

(relationship between permanent set and spring force of spring part 130)

The spring portion 130 is used as shown in fig. 11 (b) or fig. 13 described later. Thus, although the spring portion 130 has an influence in the direction in which the 2 nd angle θ 2 in fig. 6 increases when the permanent strain occurs, the influence acts in the direction in which the dimension a increases in fig. 12, and as a result, a decrease in the spring force with which the spring portion 130 supports the light source portion 200 (the coupling hardware 250) when the permanent strain occurs can be suppressed. In this way, according to the shape characteristics of the spring portion 130, the following effects are obtained: even if the spring portion 130 is deteriorated (permanently strained), the light source portion 200 can be held without causing a decrease in the elastic force (i.e., permanent strain, not just an increase in the elastic force (deflection)). The coupling hardware 250 is a member coupled to the spring portion 130, and may have a shape other than that of embodiment 1 if the dimensions a and B are not negative.

In embodiment 1, when the worker attaches the light source unit 200 to the main body unit 100, the arc portion E of the spring portion 130 slides by restoring force on the connecting hardware 250 provided in the light source unit 200. Immediately before the operator brings the light source unit 200 into the final assembled state, the 3 rd bent portion M3 suppresses (controls) the sliding of the arc portion E, and can support the light source unit 200 by a large spring constant at the inner portion M4-1 position at the time of final assembly. With this configuration, it is possible to provide a coupling mechanism that can reliably and easily couple the main body 100 and the light source 200, and a lighting fixture including the coupling mechanism.

In this connection mechanism, as shown in fig. 11 (b), the worker can lift the light source unit 200 in the ceiling direction with both hands free, and thereby the inner portion M4-1 slides and the spring unit 130 tries to return to the original shape. This improves the work efficiency of attaching and detaching the light source unit 200.

In the lighting fixture 1000 according to embodiment 1, the spring portion 130 and the connection fitting 250 can be used to attach the light source unit 200 to the main body 100, and therefore, the number of components can be reduced. In addition, in the lighting fixture 1000, since the mounting and dismounting can be performed without using a dedicated jig, workability is improved.

In embodiment 1, the lighting fixture 1000 having the inverted triangular cross section has been described, but if the main body portion and the light source portion are not integrated and it is necessary to attach the light source portion to the main body portion, the lighting fixture may be an embedded type, a direct attachment type, or a lighting fixture having a substantially square shape such as a ceiling block type.

In addition, although the description has been given of the attachment mechanism in which the light source unit 200 is attached substantially in parallel as shown in fig. 18 in embodiment 1, the attachment may be performed from one side (one of the 2 spring units 130 in fig. 2).

In addition, although the attachment mechanism in which the spring portion 130 is disposed at two positions in the longitudinal direction of the lighting fixture 1000 is described in embodiment 1, one of the long sides may be engaged by hooking and the other may be attached by the spring portion as in the lighting fixture 2000 shown in fig. 13. In fig. 13 showing the lighting fixture 2000, since the main body portion and the light source portion have different configurations from those of the lighting fixture 1000, the main body portion is denoted as a main body portion 100 ', and the light source portion is denoted as a light source portion 200'.

In addition, although the description has been given of the arrangement in which the paired spring portions 130 are movable to open in the opposite directions, the arrangement may be such that they open to face each other, or the arrangement may be such that they open in the same direction (for example, in fig. 3, 2 spring portions 130 are oriented in the same direction (arrow side in the longitudinal direction).

In embodiment 1, the spring portion 130 is provided in the main body portion 100 and the connection fitting 250 is provided in the light source portion 200, but the connection fitting 250 may be provided in the main body portion 100 and the spring portion 130 may be provided in the light source portion 200.

Conventionally, in a lighting fixture in which a light source unit and a main body unit are detachable, there is a problem that it is not easy to attach the light source unit to the main body unit. However, since the lighting fixture of embodiment 1 includes the spring portion 130 and the coupling hardware 250, the light source unit 200 and the main body unit 100 can be easily coupled to each other, and the lighting fixture in which the light source unit 200 is easily attached can be provided.

Embodiment 2.

Fig. 19 is a perspective view of a lighting fixture 1000 according to embodiment 2.

Fig. 20 is an exploded perspective view of the lighting fixture 1000 shown in fig. 19.

Fig. 21 is a perspective view of the main body 100 shown in fig. 20.

Fig. 22 is a perspective view of the light source unit 200 shown in fig. 20.

Fig. 23 is an exploded perspective view of the light source unit 200 shown in fig. 22.

Fig. 24 (a) is an enlarged view of a portion a of the main body 100 shown in fig. 21, and fig. 24 (B) is an enlarged view of a portion B of the main body shown in fig. 21.

Fig. 25 is an enlarged view of a portion a of the light source unit 200 shown in fig. 22.

Fig. 26 is an enlarged view of a portion B of the light source unit 200 shown in fig. 22.

Fig. 27 is a perspective view of the retaining portion 260 shown in fig. 23.

Fig. 28 is a perspective view of the joining hardware 250 shown in fig. 23.

Fig. 29 is a perspective view of the wire spring 280 shown in fig. 23.

Fig. 30 is a side view of the wire spring 280 shown in fig. 23.

Fig. 31 is a perspective view of hoist rope 290 shown in fig. 23.

Fig. 32 is a process diagram for mounting the light source unit 200 to the main body 100.

Fig. 33 is an explanatory diagram of the operation of the spring portion 130.

The structure of the lighting fixture in embodiment 2 will be described. In the present embodiment, a lighting fixture having an inverted triangular cross section, which is attached to an attached portion such as a ceiling (hereinafter, the attached portion is described by taking a ceiling as an example, but is not limited to a ceiling), will be described as an example of the lighting fixture according to the present invention. In the following description, for convenience, a ceiling surface side (a surface to be mounted) is set as an upper surface side, and a floor surface side (a side opposite to the surface to be mounted) is set as a lower surface side.

The spring portion 130 used in the lighting apparatus described below is the spring portion 130 shown in fig. 6 and 7.

As shown in fig. 19, the lighting fixture 1000 includes a main body 100 provided to be in contact with a ceiling, and a light source 200 detachably attached to the main body 100. The main body 100 includes a spring portion 130 for fixing the light source 200 to the main body 100 and a terminal block 120 to which a power supply wire drawn from the outside is connected. In the lighting fixture 1000, the elongated light source unit 200 is detachably attached to face the elongated body unit 100.

The spring portion 130 is a spring for a lighting device used for the lighting device. In addition, the lighting device is also referred to as a lighting fixture.

(Main body 100)

As shown in fig. 20 and 21, the main body 100 has a recess 111 formed substantially at the center in the longitudinal direction. The recess 111 is explained with reference to fig. 24 (b). The recess 111 includes an attachment portion 112, light source fixing portions 113(113a, 113b), and an inclined portion 114. The light source fixing portion 113 includes a light source insertion portion 113a (side plate) into which the light source unit 200 is inserted, and a light source receiving portion 113b disposed on the outer periphery of the light source insertion portion 113a and abutting against the light source unit 200. The recess 111 has a mounting portion 112 (corresponding to a floor in fig. 24 (b)) on its bottom side, which abuts the ceiling. A light source fixing portion 113 (a light source insertion portion 113a, a light source receiving portion 113b) into which a part of the light source unit 200 is inserted and fixed is formed on the opening portion side. The light source insertion portions 113a are side plates that rise from both ends of the mounting portion 112. A light source receiving portion 113b pressed by a cap contact portion 230b described later is formed at the tip of the light source insertion portion 113 a. The inclined portion 114 is formed from each of the light source receiving portions 113 b. As shown in fig. 20, cover portions 115 are attached to both end portions so as to cover the concave portion 111 and the inclined portion 114.

As shown in fig. 21, the spring portion 130 and the terminal block 120 are attached to the attachment portion 112 of the main body portion 100, and a power supply drawing hole 112a for drawing in a power supply line for receiving power supply from a commercial power supply and a fixing hole 112b for fixing to a ceiling are formed. Further, as shown in fig. 24 (b), a fitting 112c-1 forming a hanging hole 112c is attached, and the hanging hole 112c hooks a hanging rope 290 that prevents the light source unit 200 from falling.

(hook hardware 116)

As shown in fig. 24 (b), a hooking fitting 116 (hooking piece) hooked by a hooking sliding portion 280d, which is a tip end portion of a wire spring 280 (pressing piece) to be described later, is attached to the inner side of the one of the 2 caps 115 where the spring portion 130 is not disposed. The hooking fitting 116 is formed with a hooking hole 116a that is a substantially rectangular opening hooked by the hooking sliding portion 280 d. In embodiment 2, the case where the lid portion 115 and the hook fitting 116 are separate bodies has been described, but they may be integrally formed.

Additionally, wire spring 280 is a mating feature of hook hardware 116.

(light source 200)

As shown in fig. 23, the light source unit 200 includes:

(1) an LED unit 210 constituted by a plurality of LEDs 212 (not shown) and a substrate 211 on which the plurality of LEDs are actually mounted;

(2) a holding portion 220 on which the LED unit 210 is mounted;

(3) a cover part 230 attached to the holding part 220 so as to cover the LED unit 210 and diffusion-controlling light irradiated from the LED unit 210;

(4) a light source cover 240 covering each end of the cover part 230 in the longitudinal direction;

(5) a coupling hardware 250 (coupling member) coupled to the spring portion 130;

(6) a retaining portion 260 for preventing the cover portion 230 from coming off the holding portion 220;

(7) a lighting device 270 that lights the LED unit 210;

(8) a wire spring 280 inserted into the hooking hardware 116; and

(9) and a hanging rope 290 for preventing the light source unit 200 from falling.

The LED unit 210 is an LED substrate on which a plurality of LEDs are actually mounted.

(LED unit 210)

The LED unit 210 has a plurality of LEDs 212 and a substrate 211 on which the plurality of LEDs are actually mounted, and is formed to have an elongated shape substantially equal to the longitudinal direction of the lighting fixture 1000. The LEDs 212 are arranged substantially uniformly in the longitudinal direction of the substrate 211.

(holding part 220)

Like FIG. 23, the holding portion 220 is composed of

(1) A holding front part 220a on which the LED unit 210 is mounted, and

(2) the holding side surface portion 220b is formed in an elongated shape and protrudes (rises) perpendicularly from both long side surfaces of the holding front surface portion 220 a.

(3) Further, a coupling hardware mount 220c for mounting a coupling hardware 250 coupled to the spring portion 130 is formed on the back surface of the holding front surface portion 220a on which the LED unit 210 is mounted.

(4) Further, on one of the longitudinal end portions, a hook spring holding portion 220d which inserts and holds the end portion of the wire spring 280 and a hook spring control portion 220e which is formed in a pair in an "L" shape and controls the movement of the wire spring 280 are formed.

(cover 230)

Cover 230 is formed from, as shown in FIG. 26

(1) A cover claw part 230a having a cross section engaged with the holding side surface part 220b of the holding part 220,

(2) A hood abutting part 230b which is positioned at the same level as the holding front part 220a, is formed in the direction opposite to the holding front part 220a, and is pressed against the light source receiving part 113b, and

(3) a cover diffusion part 230c (fig. 20) formed in a substantially arc shape from the end of the cover contact part 230b so as to cover the LED unit 210

The structure is formed in a long shape.

(light source cover 240)

The light source cover 240 (fig. 22) fits into and closes the cross section formed by the cover contact portion 230b of the cover portion 230, the cover diffusion portion 230c (fig. 20), and the holding front portion 220a (fig. 23) of the holding portion 220.

(Link hardware 250)

The center of the coupling fitting 250 (fig. 28) is formed in a substantially L-shape in cross section, and a spring insertion portion 250a and a fitting fixing portion 250b are formed. And a fastening hardware mount 220c fixed to the holding portion 220.

(spring insertion part 250a)

The spring insertion portion 250a has a spring insertion hole 250a-1 opened for inserting the spring portion 130, a spring receiving portion 250a-2 bent inward from the spring insertion hole 250a-1 in the direction of the hardware fixing portion 250b, and a retaining receiving portion 250a-3 for fixing the retaining portion 260.

(hardware fixing part 250b)

The hardware fixing portion 250b abuts against and is fixed to the coupling hardware mount 220 c.

(retaining part 260)

As shown in fig. 25, the retaining portion 260 (fig. 27) prevents the holding portion 220 and the cover portion 230 from being disengaged from each other. As shown in fig. 25, the retaining portion 260 includes an abutting portion 260c abutting against the holding portion 220 and an engaging cover portion 260b fitted to cover the holding side surface portion 220b and the cover claw portion 230 a.

(Lighting device 270)

The lighting device 270 (fig. 22) is a member for supplying electric power from commercial electric power to the LED unit 210 via the terminal block 120 and lighting the LED unit 210, and is composed of a lighting device main body portion 270a formed in a substantially rectangular parallelepiped shape, and a power cable 270c and a power connector 270b for connecting to the terminal block 120.

(wire spring 280)

The wire spring 280 (fig. 29 and 30) is inserted into the hooking hole 116a of the hooking fitting 116 provided in the main body 100. The wire spring 280 is a member formed by forming a wire material having elasticity, such as a stainless steel material or a spring steel plate, into a substantially quadrangular shape.

The wire spring 280 is composed of

(1) An insertion part 280a as a wire having both ends inserted into the hook spring holding part 220d,

(2) A holding part 280b held inside the L-shape of the hook spring holding part 220d,

(3) And a pressing portion 280c for pressing the hooking fitting 116 against the holding portion 220 by an elastic force after being inserted into the hooking hole 116 a.

The pressing portion 280c has a tip bent obliquely upward, and a hooking/sliding portion 280d that slides on an edge portion 116a-1 (fig. 24 (b)) of the hooking hole 116a is formed.

(lifting rope 290)

When the light source unit 200 is attached to the main body 100, the light source unit 200 is attached to the main body 100 after the hanging rope 290 (fig. 31) is hooked in the hanging hole 112c of the main body 100. Accordingly, the light source unit 200 is prevented from falling. Lifting rope 290 is composed of

(1) A connecting part 290a attached to the holding part 220 of the light source part 200,

(2) A tension part 290b with excellent flexibility and tension such as rope,

(3) A hook 290c formed in a substantially J shape and hooked on the hanging hole 112 c.

Although the "O" shaped hanging rope in which the coupling portion 290a is fixed by a bolt and a nut so as to fit the lighting device 270 is illustrated in embodiment 2, the hanging rope may be a substantially "U" shaped hanging rope of a sandwiching type, or may be a hanging rope in which the tension portion 290b itself is coupled without using the coupling portion 290 a.

(spring part 130)

The spring portion 130 (fig. 6 and 7) is an elongated plate spring made of an elastic material such as a stainless steel material or a spring steel plate. As shown in fig. 6, the spring portion 130 includes a 1 st flat portion L1 (flat portion), a 1 st bent portion M1, a 2 nd flat portion L2, a 2 nd bent portion M2, a 3 rd flat portion L3, a 3 rd bent portion M3, a 4 th flat portion L4, a 4 th bent portion M4, an arc portion E, and a bent portion K. The 1 st bent portion M1, the 2 nd flat portion L2, the 2 nd bent portion M2, the 3 rd flat portion L3, the 3 rd bent portion M3 (protrusion), the 4 th flat portion L4, the 4 th bent portion M4, the arc portion E, and the bent portion K constitute an arc-shaped portion.

(1) The 1 st flat portion L1 (fixed portion) extends from one end of the elongated shape in the longitudinal direction. The 1 st flat portion L1 is fixed to the mounting portion 112 by a screw 118.

(2) A1 st curved portion M1 is formed at the end of the 1 st flat portion L1 with a 1 st radius of curvature R1. (3) The 2 nd flat L2 is bent at a 1 st angle θ 1 with a 1 st radius of curvature R1 and rises from the 1 st flat L1. The 2 nd flat portion L2 serves as a movable shaft (fig. 32).

(4) The 2 nd bent portion M2 is formed at the end of the 2 nd flat portion L2 at the 2 nd bending radius R2 in an opposite direction to the 1 st bending radius R1.

(5) The 3 rd flat portion L3 is bent at an acute 2 nd angle θ 2 by a 2 nd bending radius R2 and extends. (6) The 3 rd bent portion M3 is formed at the end of the 3 rd flat portion L3 at the 3 rd radius of curvature R3 in an opposite orientation to the 2 nd radius of curvature R2. The 3 rd bent portion M3 controls the sliding of the arc portion E by abutting against the spring receiving portion 250a-2 of the coupling hardware 250 immediately before the light source portion 200 is assembled to the main body portion 100.

(9) The circular arc portion E is a circular arc-shaped portion which is bent at a 4 th angle θ 4 with a 4 th bending radius R4 being an obtuse angle, extends in the longitudinal direction toward which the 1 st flat portion L1 faces, and is convex in the rising direction of the 2 nd flat portion L2. The arc portion E is a sliding portion that slides in contact with the edge of the spring insertion hole 250a-1 of the coupling fitting 250.

(10) The bent portion K (hooking portion) is a member in which the end of the arc portion E is bent, and is hooked on the edge of the spring insertion hole 250a-1 of the coupling hardware 250 (fig. 32 b).

The 2 nd flat portion L2 is a shaft portion of the spring portion 130 that exerts an elastic action when the light source portion 200 is attached.

The inner portion M4-1 of the 4 th bend M4 abuts against the edge of the spring insertion hole 250a-1 of the coupling fitting 250 when the spring 130 holds the light source unit 200.

(terminal block 120)

The terminal block 120 (fig. 21) supplies power supplied from a commercial power supply to the light source unit 200.

Next, a process of mounting the light source unit 200 to the main body 100 will be described. Fig. 32 is a process diagram for attaching the light source unit 200 to the main body unit 100 in embodiment 2. In fig. 32, (a) of fig. 32 shows a state before the light source unit 200 is attached to the main body 100. Fig. 32 (b) shows a state in which the worker inserts the wire spring 280 of the light source unit 200 into the hooking hole 116a of the hooking fitting 116 of the main body unit 100 and hooks the bent portion K (hooking portion) of the spring portion 130 to the edge of the spring insertion hole 250a-1 of the coupling fitting 250. Fig. 32 (c) shows a state in which the worker rotates the light source unit 200 from the state of fig. 32 (b) with the wire spring 280 inserted into the hook hole 116a as the rotation center. At this time, the spring part 130 slides on the edge of the spring insertion hole 250a-1 of the coupling fitting 250. Fig. 32 (d) shows a state where the light source unit 200 is attached to the main body unit 100.

(State of FIG. 32 (a))

In fig. 32 (a), the light source unit 200 and the main body unit 100 are in separate states. In the main body 100, a distance B (fig. 24 (B)) between the hook hole 116a (edge 116a-1) of the main body 100 and the light source receiving portion 113B is formed larger than a distance a between the upper surface of the holding portion 220 of the light source 200 and the hook sliding portion 280d of the wire spring 280. This will be explained later.

(State of FIG. 32 (b))

Next, in fig. 32 (b), the worker inserts the wire spring 280 of the light source unit 200 into the hooking hole 116a of the hooking fitting 116 of the main body unit 100, and hooks the bent portion K of the spring unit 130 to the edge of the spring insertion hole 250a-1 of the coupling fitting 250. In the wire spring 280, the hook sliding portion 280d at the tip end abuts on the edge 116a-1 of the hook hole 116a, and the distance B is wider than the distance A (B > A), so that the pressing portion 280c is in a state of pressing the edge 116a-1 of the hook hole 116 a. The distance a is a distance from the upper surface of the holding front portion 220a of fig. 23 to the end portion 280d-1 of the wire spring 280 in the upward direction of the hooking and sliding portion 280d (fig. 30). The distance B is a distance from the upper surface of the holding front portion 220a (i.e., the light source receiving portion 113B) to the edge portion 116a-1 of the hooking hole 116a when the light source unit 200 is attached to the main body unit 100, as shown in fig. 24 (B) and 32 (d).

The spring portion 130 is elastically deformed about the 2 nd flat portion L2 as a rotation center of the rotational movement with respect to the mounting portion 112, and is rotated while being perpendicular to the arc portion E with respect to the mounting portion 112. The bent portion K of the spring portion 130 is hooked on the edge of the spring insertion hole 250a-1 of the connection fitting 250 of the light source unit 200.

In the state of fig. 32 (b), the hook 290c of the lifting cord 290 is hooked in the hanging hole 112c of the main body 100. The operator connects the terminal block connector 120a of the main body 100 and the power connector 270b of the light source unit 200. (alternatively, the wire spring 280 may be inserted into the hook hole 116a and the spring portion 130 may be inserted into the spring insertion hole 250a-1 after the hook portion 290c of the lifting rope 290 is hooked to the hanging hole 112 c.)

(State of FIG. 32 (c))

Next, fig. 32 (c) shows a state in which the worker rotates the light source unit 200 from the state of fig. 32 (b) with the wire spring 280 inserted into the hooking hole 116a as a rotation center. The surface of the arc portion E of the spring portion 130 on the main body portion 100 side slides on the hole edge of the spring insertion hole 250a-1 by the spring restoring force.

The arc portion E of the spring portion 130 slides on the edge of the spring insertion hole 250a-1 of the coupling fitting 250. When the worker rotates the light source unit 200 about the wire spring 280, the other wire spring 280 is inserted into the hook hole 116a while the hook sliding portion 280d of the wire spring 280 slides on the edge 116a-1 of the hook hole 116 a. The operator further rotates the light source unit 200 to lift the right side of the light source unit 200 toward the main body 100, and inserts the holding side surface portion 220b and the cover claw portion 230a of the light source unit 200 into the main body 100. At this time, the arc portion E of the spring portion 130 slides on the upper edge of the spring insertion hole 250 a-1.

Further, since the wire spring 280 has a distance a smaller than the distance B, the pressing portion 280c is inserted while being elastically deformed, and the wire spring 280 and the light source cover 240 press and hold the hook hole 116a and the light source fixing portion 113.

(State of (d) in FIG. 32)

Next, in fig. 32 (d), when the operator pushes the light source unit 200 into the main body 100 so that the light source receiving portion 113b of the main body 100 and the cover abutting portion 230b of the light source unit 200 abut against each other, the 3 rd bent portion of the spring portion 130 abuts against the spring receiving portion 250a-2 of the coupling hardware 250, and the light source unit 200 is mounted on the main body 100. At this time, the spring portion 130 abuts the 3 rd bent portion M3 against the spring receiving portion 250a-2 immediately before the light source portion 200 is assembled, and the sliding of the arc portion E is suppressed. When the worker completes the insertion of the light source unit 200 into the main body 100 (the assembly of the light source unit 200 is completed), the inner portion M4-1 of the 4 th bend M4 of the spring 130 is positioned with respect to the edge in a state of being pushed against the upper edge of the spring insertion hole 250a-1 of the coupling hardware 250. At this time, the spring constant of the spring portion 130 when the edge of the spring insertion hole 250a-1 is supported by the inner portion M4-1 (fig. 33) is significantly larger than the spring constant when the light source portion 200 is supported by the bent portion K in fig. 32 (b). Since the 1 st flat portion L1 is (fixed) fixed to the main body portion 100 in the spring portion 130, this can be roughly estimated as a cantilever beam having the 1 st flat portion L1 as a fixed end. In the spring portion 130, a linear distance (span) between the 1 st bend M1 and the 4 th bend M4, which are hardly elastically deformed, is, for example, about 1/5 to 1/6 of a distance (span) between the 1 st bend M1 and the bend K. In a cantilever beam, the span affects the spring constant to the third power. Thus, the spring constant in the 4 th bend M4 is 125 times as large as that in the bent portion K if 1/5 is provided, and is 216 times as large as that in the bent portion K if 1/6 is provided. Therefore, when the worker completes the insertion of the light source unit 200 into the main body 100, the inner portion M4-1 of the 4 th bend M4 of the spring unit 130 can support the upper edge of the spring insertion hole 250a-1 of the connecting fitting 250. That is, the weight of the light source unit 200 can be supported by the inner portion M4-1 of the 4 th bend M4.

In the state of fig. 32 (d), the lower surface 280d-1-1 (fig. 30) of the wire spring 280 is pressed against the edge portion 116a-1 by a restoring force in the direction of the arrow in fig. 32 (d).

(detachment method)

Next, a method of detaching the light source unit 200 from the main body unit 100 will be described. The light source unit 200 is detached in a reverse order of the attaching method.

(1) First, the operator pulls down the side where the spring portion 130 is provided from the state where the light source portion 200 is attached to the main body portion 100 in fig. 32 (d).

(2) Next, after pulling down the light source unit 200 to the state shown in fig. 32 (b), the operator releases the connection between the terminal block connector 120a and the power connector 270b, disengages the hook portion 290c of the lifting cord 290 from the hanging hole 112c of the body portion 100, and thereafter disengages the bent portion K of the spring portion 130 from the spring insertion hole 250a-1 of the connection fitting 250. (alternatively, the hook 290c of the lifting cord 290 may be disengaged from the hanging hole 112c after the wire spring 280 is disengaged from the hooking hardware 116.)

(3) Finally, the worker pulls out the wire spring 280 in a direction opposite to the direction in which the light source unit 200 is inserted from the hooking fitting 116, and removes the light source unit 200 from the main body 100.

Next, the elastic action (action and effect) of the spring portion 130 at the time of mounting will be described. Fig. 33 is an enlarged view of the periphery of the 2 nd flat portion L2 (movable shaft) of the spring portion 130 at the time of attachment in embodiment 2. In fig. 33, the broken line indicates the spring portion 130 (as the spring portion 130a) in a state in which it is not elastically deformed (the state of fig. 32 (a)), and the solid line indicates the spring portion 130 (as the spring portion 130b) in which the elastically deformed state of the light source unit 200 (the state of fig. 32 (d)) is held by the inner portion M4-1.

In fig. 33, the inner portion M4-1 (indicated by a black dot) in the spring portion 130b (solid line) is in the following state as compared with a portion corresponding to the inner portion M4-1 of the spring portion 130a (broken line) (the position of the mark when the inner portion M4-1 is marked with a mark in the spring portion 130b (solid line) and returned to the state of the spring portion 130a (broken line)). That is, the spring portion 130B (solid line) holds the light source unit 200 (the coupling hardware 250) in a state of being horizontally elastically deformed by the dimension a in the direction of the 1 st flat portion L1 and being elastically deformed by the dimension B in the downward direction.

(relationship between permanent set and spring force of spring part 130)

The spring portion 130 is used as in fig. 32 (b). Thus, although the influence in the direction in which the 2 nd angle θ 2 in fig. 24 increases when the permanent strain occurs is exerted in the direction in which the dimension a increases in fig. 33, as a result, the decrease in the elastic force with which the spring portion 130 supports the light source portion 200 (the coupling hardware 250) when the permanent strain occurs can be suppressed. In this way, according to the shape characteristics of the spring portion 130, the following effects are obtained: even if the spring portion 130 is deteriorated (permanently strained), the light source portion 200 can be held without causing a decrease in the elastic force (i.e., permanent strain, not just an increase in the elastic force (deflection)). The connecting hardware 250 is a member connected to the spring portion 130, and may have a shape other than that of embodiment 2 if the dimensions a and B are not negative.

The present embodiment can provide a coupling mechanism for reliably and easily coupling the main body portion 100 and the light source portion 200 by using the wire spring 280 provided in the light source portion 200, inserted into the hooking fitting of the main body portion 100, and gripping a part of the main body portion 100, and the spring portion 130 provided in the main body portion 100, sliding on the coupling fitting 250 provided in the light source portion 200, and lifting up the light source portion 200, and a lighting fixture including the coupling mechanism.

In the present embodiment, the hooking fitting 116 and the connection fitting 250 are arranged so that the wire spring 280 and the spring portion 130 are connected in an elastically deformed state, and the light source unit 200 is held by the restoring force of the wire spring 280 and the spring portion 130, and the lighting fixture including the connection mechanism can be provided.

In the present embodiment, the lighting fixture 1000 having the inverted triangular cross section has been described, but if the main body 100 and the light source 200 are not integrated and the light source 200 is attached to the main body 100, the lighting fixture may be an embedded type, a direct attachment type, or a lighting fixture having a substantially square shape such as a ceiling block type.

In the present embodiment, the spring portion 130 and the hook fitting 116 are provided on the main body portion 100 side, and the coupling fitting 250 and the wire spring 280 are provided on the light source portion 200 side, but the coupling fitting and the wire spring may be provided on the main body portion side, the spring portion and the hook fitting may be provided on the light source portion, or one of them may be provided with the spring portion and the other may be provided with the fitting portion.

Conventionally, there have been problems that it is not easy to connect the light source unit and the main body unit, and the connection unit is easily deteriorated. However, in the lighting fixture of embodiment 2, since the main body portion 100 includes the spring portion 130 and the hooking fitting 116, and the light source portion 200 includes the connecting fitting 250 and the wire spring 280, it is possible to provide a connecting mechanism in which the light source portion 200 and the main body portion 100 can be easily connected and the connecting portion is less likely to deteriorate.

Description of the symbols

1000. 2000: a lighting fixture; 100: a main body portion; 111: a recess; 112: an installation part; 112 a: a power draw-in hole; 112 b: a fixing hole; 112 c: hoisting holes; 112 c-1: hardware; 113: a light source fixing part; 113 a: a light source insertion part; 113 b: a light source receiving part; 114: an inclined portion; 115: a cover portion; 116: hanging hardware; 116 a: a hooking hole; 118: a screw; 120: a terminal block; 120 a: a terminal block connector; 130. 130a, 130 b: a spring portion; 200: a light source unit; 210: an LED unit; 220: a holding section; 220 a: maintaining a frontal portion; 220 b: a holding side surface part; 220 c: connecting a hardware mounting table; 220 c-1: a screw; 220 d: a hook spring holding section; 220e, and (2): a hook spring control part; 230: a cover portion; 230 a: a cover claw portion; 230 b: a hood abutting portion; 230 c: a cover diffusion portion; 240: a light source cover portion; 250: connecting hardware; 250 a: a spring insertion portion; 250 a-1: a spring insertion hole; 250 a-1-1: an opening edge portion; 250 a-2: a spring receiving portion; 250 a-3: an anti-drop receiving part; 250b, and (3): a hardware fixing part; 250 b-1: a sliding auxiliary part; 260: an anti-drop part; 260 a: a fitting portion; 260 b: clamping the cover part; 260 c: an abutting portion; 261 a: a clip portion; 270: a lighting device; 270 a: a lighting device main body section; 270 b: a power supply connector; 270 c: a power cable; 280: a wire spring; 280 a: an insertion portion; 280 b: a holding section; 280 c: a pressing section; 280 d: a hook sliding part; 290: a lifting rope; 290 a: a connecting portion; 290b, and (3) at the same time: a tension section; 290 c: a hook portion; l1: the 1 st flat part; l2: the 2 nd flat part; l3: the 3 rd flat part; l4: the 4 th flat part; m1: 1 st bending part; m2: a 2 nd bent portion; m3: a 3 rd bent portion; m4: a 4 th bend; e: a circular arc portion; k: a bending part.

Claims

1. A lighting fixture, comprising:

an elongated light source unit;

an elongated body portion on which the light source portion is mounted; and

a light source mounting portion that, when in a state in which one end portion in a longitudinal direction of the light source portion and one end portion in a longitudinal direction of the main body portion are connected and in a state in which the other end portion in the longitudinal direction of the light source portion facing the one end portion of the light source portion and the other end portion in the longitudinal direction of the main body portion facing the one end portion of the main body portion are separated from each other, is capable of guiding the other end portion of the light source portion toward the other end portion of the main body portion while maintaining the connection between the one end portion of the light source portion and the one end portion of the main body portion, the light source mounting portion including:

a first attachment portion having a first spring disposed at the one end portion of the light source portion and a hook fitting engaged with the first spring by a spring force and disposed at the one end portion of the main body portion; and

a second mounting portion having a connection fitting disposed at the other end portion of the light source portion and a second spring engaged with the connection fitting by a spring force and disposed at the other end portion of the main body portion,

the hooking hardware is provided with a hooking hole,

the first spring has a hooking slide part that slides on an edge of the hooking hole of the hooking hardware,

the attachment hardware has a spring insertion hole opened for insertion of the second spring,

when the light source unit is rotated with the first spring as a rotation center, the hook slide unit of the first spring is simultaneously slid on the edge of the hook hole of the hook hardware and is simultaneously inserted into the hook hole, and the second spring is slid on the hole edge of the spring insertion hole of the connection hardware by a spring restoring force.

2. The lighting fixture of claim 1,

the second spring is an elongated plate spring and has an arc portion extending in a longitudinal direction of the main body portion and bulging in a direction rising from the longitudinal direction of the main body portion,

the arc portion of the second spring slides on a hole edge portion of the spring insertion hole of the coupling hardware by a spring restoring force.

3. The lighting fixture of claim 1,

the first spring includes:

an elongated pair of linear bodies, each of the linear bodies having a bent portion between one end portion and the other end portion; and

a wire-shaped body connecting the one end portions of the pair of wire-shaped bodies to each other.