Lighting device

Abstract

To enable fine adjustment of an inclination of a lamp fitting relative to a hanging member in a lighting device.SOLUTION: A lighting device 1 includes an inclination retaining part 30 which retains an inclination of a lamp fitting 3 hung by a hanging member 2 at a predetermined angle. The inclination retaining part 30 includes: a second member 32 having a second through hole 32a into which the handing member 2 is inserted and disposed at the first member 14 side relative to a light source part 20; a third member 33 disposed between the first member 14 and the second member 32; and a stopper 34 which restricts shifting of the second member 32 to the light source part 20 side. When the lamp fitting 3 is hung by the hanging member 2, the second member 32, which is restricted from shifting to the light source part 20 side by the stopper 34, presses the third member 33 to the first member 14 side to retain the inclination of the lamp fitting 3 at the predetermined angle with a frictional force between the first member 14 and the third member 33.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to lighting fixture technology. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a lighting fixture including a lighting fixture and a hanging member for hanging the lighting fixture from a ceiling surface has been publicly known.

[0003] Furthermore, Cited Document 1 describes a lighting fixture comprising a lamp socket attached to the lower end of a suspension cord hanging from the ceiling, a globe fitted to the socket, and a socket base with the socket attached to its underside, with a cord fastener connected to the suspension cord between the socket and the socket base, which engages the socket base to hang the suspension cord. This lighting fixture also has a number of protrusions on the backside of the socket base, paired on either side of the elongated hole, along the longitudinal direction of the slot. The cord fastener has a pair of engaging portions that fit between the protrusions, and the cord fastener is fixed in the engaging position by fitting the engaging portions into the protrusions. The engaging position can be changed by selecting the protrusion that fits into the engaging portion. The inclination of the lighting fixture can be adjusted by selecting the cord fastener's engaging position in this way. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication No. 3-51848 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the lighting fixture of Patent Document 1, the locking position of the cord fastener is selected based on the spacing between the many protrusions on the socket base, making it difficult to make fine adjustments to the inclination of the lighting fixture.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lighting fixture that allows fine adjustment of the inclination of the lighting fixture relative to the hanging member. [Means for solving the problem]

[0007] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0008] That is, the lighting fixture disclosed in the present application has: A lighting fixture comprising: a lighting fixture; and a hanging member for hanging the lighting fixture from a ceiling surface, The lighting fixture includes the first member having a first through hole through which the hanging member is inserted, and a light source unit connected to the hanging member, By changing the position of the hanging member in the first through-hole of the first member, the inclination of the lamp fixture with respect to the hanging member in a state where the lamp fixture is hung by the hanging member can be changed to a predetermined inclination, a tilt holding portion that holds the inclination of the lamp fixture at a predetermined inclination when the lamp fixture is suspended by the suspension member; The tilt holding unit is a second member including a second through hole through which the hanging member is inserted and disposed closer to the first member than the light source unit; a third member disposed between the first member and the second member; a stopper that restricts the position of the second member toward the light source unit; Equipped with When suspended by the hanging member, the second member, whose position toward the light source unit is restricted by the stopper, presses the third member toward the first member, and the inclination of the lighting fixture is maintained at a predetermined angle by the frictional force between the first member and the third member.

[0009] The lighting fixture disclosed in the present application can have the following configurations based on the above configuration. In the lighting fixture disclosed in the present application, The third member is preferably configured to cover the second member in a plan view.

[0010] In the lighting fixture disclosed in the present application, The third member is preferably formed in the shape of a flat plate made of a resin material.

[0011] In the lighting fixture disclosed in the present application, The lamp includes a lamp body having an opening at the top, the light source unit, the second member, and the third member are disposed within the lamp body; The first member is preferably provided so as to cover the opening of the lamp body.

[0012] In the lighting fixture disclosed in the present application, The first through hole of the first member is preferably configured as an elongated hole.

[0013] In the lighting fixture disclosed in the present application, It is preferable that the second member and the third member overlap with the first through hole of the first member in a plan view. [Effects of the Invention]

[0014] The present invention has the following effects. That is, according to the present invention, the inclination of the lighting fixture relative to the hanging member can be finely adjusted. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is a bottom view showing the lighting fixture according to the embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the same lighting fixture taken along line AA in FIG. [Figure 3] FIG. 2 is a cross-sectional view of the lighting fixture taken along line BB in FIG. [Figure 4] FIG. 2 is a partially enlarged cross-sectional view of the lighting fixture taken along line BB in FIG. 1. [Figure 5]FIG. 10 is a perspective view showing the first member of the lighting fixture and the second and third members of the tilt retaining portion. [Figure 6] FIG. 4 is an enlarged plan view showing the lighting fixture body and the first member of the lighting fixture. [Figure 7] FIG. 10 is an enlarged plan view showing a state in which the position of the hanging member is changed within the first through-hole of the first member of the lighting fixture. DETAILED DESCRIPTION OF THE INVENTION

[0016] A lighting fixture 1 according to one embodiment of the present invention will be described with reference to FIGS. 1 to 7. The lighting fixture 1 according to this embodiment is mounted on a mounting surface, such as a ceiling. The lighting fixture 1 can also be mounted on a wall (including an inclined surface) and used in a manner not limited to a ceiling. In the following description, the side of the lighting fixture 1 that emits light is referred to as the "irradiation surface" of the lighting fixture 1, and the side of the lighting fixture 1 that faces the mounting surface is referred to as the mounting surface (opposite the irradiation surface). The mounting surface side of the lighting fixture 1 is the rear side (backside) of the lighting fixture 1. When the lighting fixture 1 is mounted on a mounting surface, if the direction perpendicular to the mounting surface is defined as the up-down direction of the lighting fixture 1, the mounting surface side of the lighting fixture 1 will be referred to as the "upper" side, and the direction directly below the irradiation surface side of the lighting fixture 1 will be referred to as the "lower" side. A direction perpendicular to the up-down direction of the lighting fixture 1 will be referred to as the "side" side of the lighting fixture 1. In the following description, the lighting fixture 1, etc., viewed from above will be referred to as a plan view. The lighting fixture 1, etc., viewed from a direction perpendicular to the up-down direction will be referred to as a side view. The state in which the cross-sectional shape of the lighting fixture 1 or the like is seen is referred to as a cross-sectional view.

[0017] The lighting fixture 1 shown in Figs. 1 to 7 will be described. 1 to 3, the lighting fixture 1 mainly comprises a hanging member 2 and a lighting fixture 3, and is attached to a mounting surface such as a ceiling via the hanging member 2. One end of the hanging member 2 is fixed to the mounting surface, and the other end of the hanging member 2 is fixed to the lighting fixture 3. In this embodiment, the hanging member 2 is made up of an electric wire that supplies power to the lighting fixture 3 (light source unit 20), but is not limited to this and may be made up of, for example, a wire or chain for suspending the lighting fixture 3.

[0018] As shown in FIGS. 2 to 6, the lamp 3 includes a lamp body 10, a light source unit 20, a shade 22, a first member 14, and a tilt retaining unit 30.

[0019] The lamp body 10 is configured to be approximately cylindrical, and has a first opening 11 at the top, a second opening 12 at the bottom, and a side portion 13. A light source unit 20, a tilt holding unit 30, etc. are arranged inside the lamp body 10. The diameter of the first opening 11 is configured to be larger than the diameter of the second opening 12. The diameter of the side portion 13 is configured to decrease from top to bottom.

[0020] The light source unit 20 is configured, for example, as a light-emitting module with LED elements arranged on the underside of a board, and is configured so that the lower side is the illumination surface side. The light source unit 20 is fixed to the upper and lower parts of the lighting fixture body 10 with fasteners such as screws. The light source unit 20 is arranged in approximately the center of the lighting fixture body 10 in the front, back, left and right directions. A transparent or translucent LED panel 21 is arranged below the light source unit 20. A hanging member 2 is provided on the board of the light source unit 20. The hanging member 2 is configured to extend upward from the light source unit 20.

[0021] The shade 22 is provided at the lower end of the lamp body 10. The shade 22 is configured so that its diameter increases from top to bottom. The shade 22 is fixed to the lamp body 10 by a shade retaining member 23 and fasteners such as screws. Light emitted from the light source unit 20 reaches the shade 22 side through the LED panel 21 and the second opening 12 of the lamp body 10.

[0022] The first member 14 is a cover member that covers the first opening 11 of the lamp body 10, and in this embodiment is made of a metal material such as a steel plate. The first member 14 is formed into a flat, circular shape in a plan view. The diameter of the first member 14 is configured to be larger than the diameter of the first opening 11 of the lamp body 10. The first member 14 is fixed to the upper end of the lamp body 10 with fasteners such as screws. The first member 14 has a first through hole 14a through which the hanging member 2 is inserted. The first through hole 14a is a through hole that is elongated in a plan view with the left-right direction as its longitudinal direction, and is located in the center of the first member 14. The width of the first through hole 14a is configured to be slightly larger than the diameter of the hanging member 2.

[0023] In the lighting device 1, the position of the center of gravity of the lighting device 3 suspended by the hanging member 2 is changed by changing the position of the hanging member 2 within the first through-hole 14a of the first member 14 (see FIG. 7). In this way, the lighting device 1 is configured so that the inclination of the lighting device 3 with respect to the hanging member 2 suspended by the hanging member 2 can be changed to a predetermined inclination.

[0024] The tilt holding portion 30 holds the tilt of the lighting fixture 3 at a predetermined tilt while it is suspended by the suspension member 2. The tilt holding portion 30 includes a second member 32, a third member 33, and a stopper .

[0025] The second member 32 is a flat washer and is made of stainless steel. The diameter of the second member 32 is configured to be smaller than the diameter of the first member 14. The second member 32 is arranged closer to the first member 14 (above) than the light source unit 20. The second member 32 has a second through hole 32a through which the hanging member 2 is inserted. The second through hole 32a is a through hole that is circular in plan view and is arranged in the center of the second member 32. The diameter of the second through hole 32a is configured to be slightly larger than the diameter of the hanging member 2.

[0026] The stopper 34 regulates the position of the second member 32 toward the light source unit 20 (downward). The stopper 34 is configured as a ball portion formed by exposing the inside of the sheath of the hanging member 2 and tying an intervening thread into a ball. The stopper 34 is disposed closer to the light source unit 20 than the second member 32, and is configured to have a larger diameter than the second through-hole 32a of the second member 32. Therefore, when the second member 32 is pressed toward the light source unit 20, the stopper 34 catches on the stopper 34, thereby regulating the position of the second member 32 toward the light source unit 20. Note that the stopper 34 is not limited to this configuration, and may have another configuration as long as it regulates the position of the second member 32 toward the light source unit 20.

[0027] The third member 33 is formed into a flat, circular shape in a planar view. The third member 33 is made of an elastic material such as a resin material. The third member 33 is configured to have a higher friction resistance than the first member 14 and the second member 32. In this embodiment, the third member 33 is formed of a silicone rubber packing. The third member 33 is disposed between the first member 14 and the second member 32. The third member 33 has a third through hole 33a through which the hanging member 2 is inserted. The third through hole 33a is a through hole having a circular shape in a planar view and is disposed at the center of the third member 33. The opening area of ​​the third through hole 33a is configured to be smaller than the first through hole 14a of the first member 14 and the second through hole 32a of the second member 32. The third member 33 is formed to have the same size as the second member 32 in a planar view. In this embodiment, the third member 33 is attached to one side of the second member 32 and configured integrally, and the second member 32 and the third member 33 move as a unit within the lamp body 10.

[0028] In the lighting fixture 1, when the lamp 3 is suspended by the hanging member 2, the second member 32, whose position toward the light source unit 20 is restricted by the stopper 34 of the tilt retaining unit 30, presses the third member 33 toward the first member 14. In this state, the third member 33 abuts against the first member 14, and the tilt of the lamp 3 is maintained at a predetermined tilt by the frictional force generated between the first member 14 and the third member 33. To adjust the tilt of the lamp 3 relative to the hanging member 2, an operator moves the hanging member 2 along the longitudinal direction of the first through-hole 14a of the first member 14 against the frictional force between the first member 14 and the third member 33 (see FIG. 7 ). In this way, the position of the hanging member 2 within the first through-hole 14a of the first member 14 is changed, changing the position of the center of gravity of the lamp 3 and changing the tilt of the lamp 3 relative to the hanging member 2 to a predetermined tilt.

[0029] As described above, when the lamp 3 is suspended by the hanging member 2, the second member 32, whose position toward the light source unit 20 is restricted by the stopper 34, presses the third member 33 toward the first member 14 (upward), and the frictional force generated between the first member 14 and the third member 33 causes the tilt retaining unit 30 to retain the tilt of the lamp 3 at a predetermined tilt. Therefore, compared to a configuration in which the tilt of the lamp 3 relative to the hanging member 2 is retained at a predetermined tilt by fitting a selected protrusion from among a plurality of protrusions into an engaging portion, this configuration allows for more precise adjustment of the tilt of the lamp 3 relative to the hanging member 2. Furthermore, because of this configuration, the tilt retaining unit 30 can retain the tilt of the lamp 3 suspended by the hanging member 2 at a predetermined tilt with a simpler configuration than a configuration in which the tilt of the lamp 3 relative to the hanging member 2 is retained at a predetermined tilt by fitting a selected protrusion from among a plurality of protrusions into an engaging portion.

[0030] Furthermore, as described above, the third member 33 of the tilt holding portion 30 is configured as a flat plate made of an elastic resin material, so that it is possible to realize a simple configuration that keeps the tilt of the lighting fixture 3 suspended by the hanging member 2 at a predetermined tilt.

[0031] Furthermore, as described above, since the first through hole 14a of the first member 14 is configured in the shape of an elongated hole, when changing the inclination of the lighting fixture 3 relative to the hanging member 2, the hanging member 2 is moved along the longitudinal direction of the first through hole 14a of the first member 14. In this way, when changing the inclination of the lighting fixture 3 relative to the hanging member 2, the direction in which the hanging member 2 is moved is limited to the longitudinal direction of the first through hole 14a of the first member 14. Therefore, the operation of changing the inclination of the lighting fixture 3 relative to the hanging member 2 can be easily performed.

[0032] Furthermore, the first through hole 14a of the first member 14 is not limited to this configuration and can have an appropriate configuration depending on the specifications, application, etc. For example, the first through hole 14a of the first member 14 may be configured in a circular shape in plan view, an elliptical shape in plan view, a triangular shape in plan view, a polygonal shape in plan view, a cross shape in plan view, or the like.

[0033] As described above, in order to facilitate the operation of changing the inclination of the lighting fixture 3 relative to the hanging member 2, it is preferable to configure the weight balance of the lighting fixture 3 in a direction perpendicular to the longitudinal direction of the first through-hole 14a of the first member 14 to be approximately uniform in advance. Furthermore, in order to facilitate the operation of changing the inclination of the lighting fixture 3 relative to the hanging member 2 as described above, it is preferable to arrange a relatively heavy member such as a power supply unit at a position that overlaps the longitudinal direction of the first through-hole 14a of the first member 14 in a plan view. Alternatively, it may be provided as a separate body from the lighting fixture 3 (for example, a mounting part that is attached to the ceiling surface), or a configuration such as arranging a weight to make the weight balance of the lighting fixture 3 uniform may be adopted.

[0034] As described above, the light source unit 20, the second member 32, and the third member 33 of the tilt retaining unit 30 are disposed within the lamp body 10, and the first member 14 is provided to cover the first opening 11 of the lamp body 10. In this way, even when the tilt retaining unit 30 (the second member 32 and the third member 33) is disposed within the lamp body 10 and cannot be seen, the tilt of the lamp 3 relative to the hanging member 2 can be easily changed to a predetermined tilt.

[0035] The diameter of the third member 34 is configured to be approximately the same as the diameter of the second member 32. The third member 34 is configured to cover the second member 32 in a plan view. Therefore, when the lighting fixture 3 is suspended by the suspension member 2, the contact area between the second member 32 and the third member 34 can be increased, thereby increasing the frictional force between the second member 32 and the third member 34. Therefore, even when the lighting fixture 3 is subjected to external impacts, vibrations, or the like, the state in which the second member 32 presses the third member 33 upward can be reliably maintained.

[0036] The diameters of the second member 32 and the third member 33 are configured to be larger than the longitudinal length of the first through hole 14a of the first member 14. The second member 32 and the third member 33 overlap the first through hole 14a of the first member 14 in a plan view. Therefore, the second member 32 and the third member 33 block the first through hole 14a of the first member 14 from below, preventing foreign matter from entering the lamp body 10 through the first through hole 14a of the first member 14. Furthermore, because the diameter of the third member 33 is configured to be larger than the longitudinal length of the first through hole 14a of the first member 14, the contact area between the first member 14 and the third member 34 is increased, thereby increasing the frictional force between the first member 14 and the third member 34. Therefore, even when subjected to external impact, vibration, or the like, displacement of the contact position between the first member 14 and the third member 33 can be prevented.

[0037] The third member 33 is not limited to this configuration and may have any appropriate configuration depending on the specifications, applications, and the like. For example, the third member 33 may be configured as an ellipse in a planar view, a triangle in a planar view, or a polygonal shape in a planar view. For example, the third member 33 may be integrally provided on the lower surface of the first member 14 or may be integrally provided on the upper surface of the second member 32. For example, the third member 33 may be made of a predetermined adhesive material that has a higher friction resistance than the lower surface of the first member 14 and the upper surface of the second member 32, and the adhesive material may be applied to the lower surface of the first member 14 or the upper surface of the second member 32. For example, when the third member 33 is integrally provided on or applied to the first member 14, the third member 33 may be partially provided on the lower surface of the first member 14. For example, when the third member 33 is integrally provided on or applied to the second member 32, the third member 33 may be partially provided on the upper surface of the second member 32. [Explanation of symbols]

[0038] 1. Lighting equipment 2 Hanging member 3 Lights 10 Light fixture body 11 First opening 12 Second opening 13 Side 14 First member 14a First through hole 20 Light source section 21 LED panels 22 Saed 23 Shade retainer 30 Tilt holding part 32 Second member 32a Second through hole 33 Third member 33a Third through hole 34 Stopper

Claims

1. A lighting fixture comprising: a lighting fixture; and a hanging member for hanging the lighting fixture from a ceiling surface, The lighting fixture includes the first member having a first through hole through which the hanging member is inserted, and a light source unit connected to the hanging member, By changing the position of the hanging member in the first through-hole of the first member, the inclination of the lamp fixture with respect to the hanging member in a state where the lamp fixture is hung by the hanging member can be changed to a predetermined inclination, a tilt holding portion that holds the inclination of the lamp fixture at a predetermined inclination when the lamp fixture is suspended by the suspension member; The tilt holding unit is a second member including a second through hole through which the hanging member is inserted and disposed closer to the first member than the light source unit; a third member disposed between the first member and the second member; a stopper that restricts the position of the second member toward the light source unit; Equipped with When the lighting fixture is suspended by the hanging member, the second member, whose position toward the light source unit is restricted by the stopper, presses the third member toward the first member, and the inclination of the lighting fixture is maintained at a predetermined inclination by the frictional force between the first member and the third member.

2. The third member is configured to cover the second member in a plan view.

10. The lighting fixture of claim 1.

3. The third member is configured in a flat plate shape made of a resin material.

3. A lighting fixture according to claim 2.

4. The lamp includes a lamp body having an opening at the top, the light source unit, the second member, and the third member are disposed within the lamp body; The first member is provided to cover the opening of the lamp body.

4. A lighting fixture according to claim 3.

5. The first through hole of the first member is configured as an elongated hole.

5. A lighting fixture according to claim 4.

6. the second member and the third member overlap with the first through hole of the first member in a plan view; 3. A lighting fixture according to claim 2.

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