Lighting fixtures

Abstract

We provide lighting fixtures that improve the ease of installation and removal. [Solution] This is a lighting fixture 10 installed on a ceiling bar 11 of a system ceiling. The lighting fixture 10 comprises a fixture body 20 positioned on the ceiling bar 11 from above, and a mounting spring 41. The mounting spring 41 elastically deforms upon contact with the ceiling bar 11 when the fixture body 20 is positioned on the ceiling bar 11 from above and when the fixture body 20 positioned on the ceiling bar 11 is pushed upward, and biases the fixture body 20 downward by engaging with the ceiling bar 11 while the fixture body 20 is positioned on the ceiling bar 11.

Description

Technical Field

[0001] Embodiments of the present invention relate to lighting fixtures.

Background Art

[0002] Conventionally, in a suspended ceiling system, a ceiling bar is installed by a hanger or the like on a suspension bolt hanging down from a ceiling slab of a building or the like, and a lighting fixture is arranged between the ceiling bars facing each other in parallel.

[0003] Since this lighting fixture for a suspended ceiling system is configured to be attached to the ceiling bar on the back side above the ceiling, it takes time and effort to attach or remove the lighting fixture to / from the ceiling bar from below the ceiling, and there is room for improvement.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by the present invention is to provide a lighting fixture that can improve the workability of construction and removal.

Means for Solving the Problems

[0006] [[ID=四十七]]

Effects of the Invention

[0007] ​ According to the embodiment, it is expected that a lighting fixture can be provided that improves the workability of installation and removal. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a lighting fixture installed on a ceiling bar, illustrating the first embodiment. [Figure 2] This is a front view of the lighting fixture installed on the ceiling bar shown above. [Figure 3] This is a front view showing the installation procedure for the same lighting fixture. [Figure 4] This is a front view showing the installation procedure following Figure 4 of the same lighting fixture. [Figure 5] This is a front view of a lighting fixture showing a second embodiment. [Modes for carrying out the invention]

[0009] The first embodiment will be described below with reference to Figures 1 to 4.

[0010] Figures 1 and 2 show the lighting fixture 10. The lighting fixture 10 is a lighting fixture for a system ceiling, which is installed in a system ceiling, such as one used in the ceiling of an office.

[0011] In a system ceiling, ceiling bars 11 called T-bars are installed by hangers or the like on suspension bolts that hang down from the building's ceiling slab, and lighting fixtures 10 are placed across the space between parallel, opposing ceiling bars 11. The ceiling bar 11 has a vertical section 12, a suspension section 13 provided on the upper end of the vertical section 12, and a support section 14 provided horizontally perpendicular to the lower end of the vertical section 12, and is formed in a roughly inverted T-shape in cross-section. The suspension section 13 is formed in a roughly rectangular frame shape in cross-section that protrudes from both sides of the vertical section 12 and is suspended at multiple points along its longitudinal direction by hangers or the like on suspension bolts that hang down from the building's ceiling. In this way, the ceiling bar 11 is suspended from the building's ceiling slab. The lighting fixtures 10 are then installed on the ceiling bars 11 through openings 15 that open between a pair of parallel, opposing ceiling bars 11 (between the opposing support sections 14 of the pair of ceiling bars 11).

[0012] The lighting fixture 10 comprises a fixture body 20, a light source unit that is detachably attached to the lower side of the fixture body 20, and a mounting member (mounting bracket) 21 for attaching the fixture body 20 to the ceiling bar 11.

[0013] The fixture body 20 is made of sheet metal, for example, and is provided in a long length. The fixture body 20 has an upper central main body portion 25 provided along the longitudinal direction, reflective surface portions 26 that are inclined to expand downward from the lower ends on both sides in the short direction of the main body portion 25, and end surface portions 27 provided at both ends in the longitudinal direction.

[0014] The main body 25 is formed in a roughly U-shape with its cross-section in the shorter direction opening downwards. The main body 25 is equipped with a terminal block 28 for connecting power supply lines, a power supply unit 29 for lighting the light source, and a pair of spring-loaded mounting brackets 30 which are mounting parts for detachably attaching the light source unit.

[0015] The width of the fixture body 20 in the shorter direction is wider than the width of the opening 15 between the opposing ceiling bars 11, so that the lower parts on both sides in the shorter direction of the fixture body 20 can be positioned on the support parts 14 of the opposing ceiling bars 11, straddling the opening 15 (see Figure 2).

[0016] Furthermore, the light source unit is provided in an elongated shape and is mounted along the lower surface of the main body portion 25 of the fixture body 20, and is positioned inside the fixture body 20. The light source unit uses a light source module in which multiple light-emitting elements such as LEDs are mounted on a circuit board as the light source. The light source unit has a pair of light source mounting springs, which are attachment parts to the fixture body 20, and the pair of light source mounting springs are engaged with a pair of spring receiving fittings on the fixture body 20, thereby being attached to the fixture body 20 by the spring force of the pair of light source mounting springs.

[0017] Furthermore, the mounting member 21 is attached to the upper surface of the fixture body 20 near both ends in the longitudinal direction. The mounting member 21 comprises an arm portion 35 that is long along the short direction of the fixture body 20 and attached to the upper surface of the fixture body 20, leg portions 36 that are bent downward from both ends of the arm portion 35, and a mounting portion 37 provided at the lower end of the leg portion 36. The mounting portion 37 has a mounting portion 38 that is bent outward from the lower end of the leg portion 36 and rests on the ceiling bar 11, and a restricting portion 39 that is bent downward from the mounting portion 38 and positioned to face the outer surface of the ceiling bar 11. By positioning the mounting portion 37 on the upper end of the ceiling bar 11, the position of the fixture body 20 in the short direction relative to the ceiling bar 11 is positioned. With the position of the fixture body 20 in the short direction relative to the ceiling bar 11 positioned by the mounting member 21, the lower sides of both sides in the short direction of the fixture body 20 are positioned on the upper surface of the opposing support portion 14 of the ceiling bar 11.

[0018] Mounting springs 41 are attached to the legs 36 of the mounting member 21, which elastically hold the fixture body 20 to the ceiling bar 11 by engaging with the ceiling bar 11 when the fixture body 20 is positioned on the ceiling bar 11.

[0019] The mounting spring 41 is composed of a leaf spring and has a base portion 42 attached to the leg portion 36 and an engaging portion 43 provided on the lower end side of the base portion 42. The engaging portion 43 is formed in a substantially V-shaped cross section (or a substantially triangular cross section) having a tip portion 44 protruding toward the inner surface of the ceiling bar 11, a lower inclined portion 45 rising inclined toward the tip portion 44, and an upper inclined portion 46 descending inclined. The tip side of the lower inclined portion 45 is bent so as to fold back to the back side. Note that the engaging portion 43 is not limited to a substantially V-shaped cross section (or a substantially triangular cross section), and may be, for example, an arc shape or a waveform, and in any shape case (for example, in the case of an arc shape), it has a tip portion 44, a lower inclined portion 45, and an upper inclined portion 46.

[0020] When the appliance body 20 is arranged on the ceiling bar 11 from above or when the appliance body 20 arranged on the ceiling bar 11 is pushed upward, the mounting spring 4 of this shape elastically deforms so as to move to the central side between the opposing ceiling bars 11 by contact with the suspension portion 13 of the ceiling bar 11, and biases the appliance body 20 downward by engagement with the lower side of the suspension portion 13 of the ceiling bar 11 in the state where the appliance body 20 is arranged on the ceiling bar 11, thereby preventing the appliance body 20 from floating up.

[0021] Next, the construction procedure of the lighting fixture 10 will be described with reference to FIGS. 2, FIGS. 3 to FIGS. 5.

[0022] As shown in FIG. 3, with the lighting fixture 10 in an oblique posture where one side in the short side direction is raised and the other side is lowered, the lighting fixture 10 is inserted downward from one side in the short side direction into the opening 15 between the opposing ceiling bars 11 and pushed upward above the ceiling bar 11 (see FIG. 4).

[0023] As shown in Figure 4, the lighting fixture 10 is positioned horizontally above the ceiling bar 11, and the lighting fixture 10 is lowered so that the fixture body 20 enters between the opposing ceiling bars 11. As the lighting fixture 10 is lowered, the engaging portion 43 of the mounting spring 41 enters the inside of the ceiling bar 11, and the restricting portion 39 enters the outside of the ceiling bar 11. Furthermore, the lower inclined portion 45 of the engaging portion 43 contacts the upper side of the suspension portion 13 of the ceiling bar 11, and the mounting spring 41 descends while elastically deforming so that it moves towards the center side between the opposing ceiling bars 11 (hereinafter referred to as the center side of the opening 15), while the tip portion 44 of the engaging portion 43 slides along the inner surface of the suspension portion 13 of the ceiling bar 11 as it descends.

[0024] As shown in Figure 2, in the mounting spring 41, when the tip 44 of the engaging portion 43 descends below the suspension portion 13 of the ceiling bar 11, the engaging portion 43 moves outward from the opening 15, that is, toward the inner surface of the ceiling bar 11, due to the elasticity that resists elastic deformation, and the upper inclined portion 46 engages with the lower side of the suspension portion 13 of the ceiling bar 11. Furthermore, the mounting portion 37 of the mounting member 21 is positioned at the upper end of the ceiling bar 11, that is, the mounting portion 38 of the mounting portion 37 rests on the ceiling bar 11, and the restricting portion 39 is positioned to face the outer surface of the ceiling bar 11.

[0025] By positioning the mounting portion 37 of the mounting member 21 on the upper end of the ceiling bar 11, the position of the fixture body 20 in the short-side direction relative to the ceiling bar 11 is determined, and this positioning causes the lower sides of both sides of the fixture body 20 in the short-side direction to be positioned on the upper surfaces of the support portions 14 of the ceiling bar 11 on both sides.

[0026] The upper inclined portion 46 of the mounting spring 41 engages with the lower side of the suspension portion 13 of the ceiling bar 11, thereby biasing the fixture body 20 downwards and preventing the fixture body 20 from floating up.

[0027] On the other hand, when removing the lighting fixture 10, the procedure should be the reverse of the installation procedure. That is, the lighting fixture 10 should be pushed upwards above the ceiling bar 11 and angled in the direction of its shorter side, and then pulled downwards through the opening 15 between the opposing ceiling bars 11.

[0028] When the lighting fixture 10 is pushed upward on the ceiling bar 11, the mounting spring 41 elastically deforms and rises as it moves toward the center of the opening 15 due to contact between the upper inclined portion 46 of the engaging portion 43 of the mounting spring 41 and the lower side of the suspension portion 13 of the ceiling bar 11, while the tip portion 44 of the engaging portion 43 slides along the inner surface of the suspension portion 13 of the ceiling bar 11 as it rises, causing the engaging portion 43 to disengage upward from the suspension portion 13 of the ceiling bar 11.

[0029] Generally, to prevent the lighting fixture 10 from floating up, a hooking member was used on the mounting member 21 placed on the ceiling bar 11, which hooked onto the lower side of the ceiling bar 11. Therefore, it was difficult to push up the lighting fixture 10 and detach the hooking member from the lower side of the ceiling bar 11. Consequently, when installing or removing the lighting fixture 10, the mounting member 21 and the fixture body 20 had to be separated, and the fixture body 20 had to be attached to or detached from the mounting member 21 installed on the ceiling bar 11, which made the installation and removal work time-consuming and laborious.

[0030] In the lighting fixture 10 of this embodiment, when the fixture body 20 is placed on the ceiling bar 11 from above, or when the fixture body 20 placed on the ceiling bar 11 is pushed upward, it elastically deforms to move towards the center between the opposing ceiling bars 11 upon contact with the suspension portion 13 of the ceiling bar 11, thereby improving the workability of installation and removal. Furthermore, when the fixture body 20 is placed on the ceiling bar 11, the engagement with the lower side of the suspension portion 13 of the ceiling bar 11 biases the fixture body 20 downward, thus preventing the fixture body 20 from floating up.

[0031] The engaging portion 43 of the mounting spring 41 has a tip portion 44 that protrudes toward the inner surface of the ceiling bar 11, a downward inclined portion 45 that slopes upward toward the tip portion 44, and an upward inclined portion 46 that slopes downward toward the tip portion 44. Therefore, the fixture body 20 can be placed on the ceiling bar 11 from above during installation, and the fixture body 20 placed on the ceiling bar 11 can be pushed up when removing it.

[0032] Figure 5 shows a second embodiment.

[0033] The mounting spring 41 has a base 42 attached to the lower or upper surface of the mounting portion 38 of the mounting portion 37, and an engaging portion 43 is provided on the outer end side of the base 42 that engages with the outer surface of the ceiling bar 11.

[0034] In this case as well, when the fixture body 20 is placed on the ceiling bar 11 from above, or when the fixture body 20 placed on the ceiling bar 11 is pushed upward, it elastically deforms to move towards the center between the opposing ceiling bars 11 upon contact with the suspension portion 13 of the ceiling bar 11, thereby improving the workability of installation and removal. Furthermore, when the fixture body 20 is placed on the ceiling bar 11, the engagement with the lower side of the suspension portion 13 of the ceiling bar 11 biases the fixture body 20 downward, thus preventing the fixture body 20 from floating up.

[0035] Furthermore, when removing the lighting fixture 10, by moving the lighting fixture 10 towards one side (for example, to the right in Figure 5) of the ceiling bar 11, the engaging portion 43 of the mounting spring 41 on one side (for example, to the right in Figure 5) disengages from the ceiling bar 11 on that side. Then, by pushing one side of the lighting fixture 10 upwards into an oblique position (similar to Figure 3), the lighting fixture 10 can be pulled downwards through the opening 15 between the opposing ceiling bars 11, making it easy to remove the lighting fixture 10.

[0036] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0037] 10 Lighting fixtures 11 Ceiling Bar 20 Main body of the device 41 Mounting spring 43. Department of Integration 44. Tip end 45 Lower inclined part 46 Upper inclined part

Claims

1. A lighting fixture installed on a ceiling bar in a system ceiling, The fixture body is positioned above the ceiling bar; A mounting spring that elastically deforms upon contact with the ceiling bar when the fixture body is positioned on the ceiling bar from above and when the fixture body positioned on the ceiling bar is pushed upward, and biases the fixture body downward by engaging with the ceiling bar when the fixture body is positioned on the ceiling bar; A lighting fixture characterized by having the following features.

2. The mounting spring has a tip portion that protrudes toward the side of the ceiling bar, and an engaging portion that has a downward inclined portion that slopes upward toward the tip portion and an upward inclined portion that slopes downward toward the tip portion. The lighting fixture according to feature 1.

3. The mounting spring engages with the inner or outer surface of the ceiling bar. A lighting fixture according to claim 1 or 2.

Images