lighting fixtures

Abstract

To provide a long lighting fixture capable of suppressing unevenness of lighting while reducing the outer shape of the fixture.SOLUTION: A lighting fixture comprises: a long lighting fixture body that can be attached to an installation location; a long light source unit comprising a long substrate on which a light source is arranged along a longitudinal direction; and a power supply device that supplies power to the light source. The substrate and the power supply device are configured to be arranged along a lateral direction of the lighting fixture body inside the lighting fixture body.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a lighting fixture.

Background Art

[0002] Conventionally, a long LED lighting fixture embedded and installed in a ceiling or the like is known (Patent Document 1). In such an LED lighting fixture, an LED substrate is disposed near the center in the short-side direction in order to obtain uniform light distribution, and a power supply device for supplying power to the LED substrate is disposed on the back side of the LED substrate.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the lighting fixture disclosed in Patent Document 1, since the power supply device is disposed on the back side of the LED substrate, the dimension (thickness) in the height direction of the lighting fixture increases. Therefore, when embedded in a ceiling or the like, there is a risk of interference with structures existing in the ceiling space (for example, a so-called C-channel or the like). Thus, the lighting fixture of Patent Document 1 has a problem that installation locations are restricted because it is necessary to install the lighting fixture so as to avoid ceiling-back structures such as C-channels. In the lighting fixture of Patent Document 1, due to such restrictions on installation locations, for example, it is difficult to realize a highly designed lighting mode in which a plurality of lighting fixtures are arranged in series and continuously side by side without gaps to create a single linear lighting beam with the plurality of lighting fixtures.

[0005] Further, in the lighting fixture of Patent Document 1, when the distance between the LED substrate and the diffusion cover is reduced in order to achieve thinning, the light diffusion performance of the LED by the diffusion cover deteriorates, and lighting unevenness becomes prominent, which may deteriorate the appearance.

[0006] Therefore, an object of the present invention is to provide a lighting fixture that can suppress uneven lighting while reducing the outer shape of the fixture in a long lighting fixture.

Means for Solving the Problems

[0007] To achieve the above object, a lighting fixture according to the present invention includes a long lighting fixture body attached to an installation location, a long light source unit including a long substrate on which light sources are arranged along the longitudinal direction, and a power supply device that supplies power to the light sources, wherein the substrate and the power supply device are configured to be arranged along the short-side direction of the lighting fixture body inside the lighting fixture body.

[0008] In the lighting fixture according to the present invention, the lighting fixture body includes a housing recess having an upper wall portion and side wall portions extending downward from both ends in the short-side direction of the upper wall portion, the housing recess includes a power supply housing portion capable of housing the power supply device, the power supply housing portion is a long hollow space extending along the longitudinal direction formed on one side wall portion side of the housing recess, the light source unit is configured to be detachable within the housing recess, and preferably has a shape that does not interfere with the power supply housing portion when mounted in the housing recess.

[0009] In the lighting fixture according to the present invention, the light source unit may be mounted between the power supply housing portion and the other side wall portion where the power supply housing portion is not formed.

[0010] In the lighting fixture according to the present invention, the lighting fixture body further includes a folded-back portion formed by folding back inward from the lower end portion of the side wall portion, and the folded-back portion is preferably configured to fill a gap between the side wall portion and the light source unit housed in the housing recess in a bottom view.

[0011] In the lighting fixture according to the present invention, the power supply housing portion may be located above the folded-back portion.

[0012] In the lighting fixture according to the present invention, it is preferable that the light source unit is formed asymmetrically left and right with the center in the short side direction as a boundary.

[0013] In the lighting fixture according to the present invention, the lower end of the power supply device may be located below the lower surface of the substrate.

[0014] In the lighting fixture according to the present invention, it is preferable that the light source is a plurality of LEDs arranged along the longitudinal direction of the substrate.

[0015] In the lighting fixture according to the present invention, when the light source unit is mounted on the lighting fixture main body, the light source unit may further include an upper surface portion facing the upper wall portion and capable of holding the substrate, and a lower surface portion having a diffusion member for diffusing the light emitted from the plurality of LEDs.

[0016] In the lighting fixture according to the present invention, it is preferable that the light source unit further includes a light guide panel having an incident surface facing the plurality of LEDs and a light guide portion extending downward from the incident surface.

Advantages of the Invention

[0017] According to the lighting fixture of the present invention, in a long lighting fixture, it is possible to provide a lighting fixture capable of suppressing uneven lighting while reducing the outer shape of the fixture.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0019] Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. Note that the following embodiments do not limit the invention according to each claim, and not all combinations of the features described in the embodiments are essential for the solution means of the invention. Also, in the present embodiment, there are cases where the scales and dimensions of each component are exaggeratedly shown, and cases where some components are omitted.

[0020] [First Embodiment] As shown in FIGS. 1 and 2, the lighting fixture 1 according to the present embodiment is an embedded lighting fixture that is embedded and installed in a mounting hole 6b provided at the installation location. Specifically, it includes a long lighting fixture body 10 attached to the installation location, a long light source unit 30 including a long substrate 32 on which a light source 31 is arranged along the longitudinal direction, and a power supply device 2 that supplies power to the light source 31.

[0021] In addition, in this embodiment, the light source 31 is described as a plurality of LEDs arranged along the longitudinal direction of the substrate 32, but it is not limited thereto. For example, various light sources such as organic ELs can be adopted.

[0022] Also, in this embodiment, the ceiling 6 is taken as an example of the installation location for explanation, but it is not limited thereto. The lighting fixture 1 according to the present invention can be attached to various installation locations such as walls and floors. Further, in this embodiment, the direction in which the lighting fixture 1 is attached to the ceiling 6 is defined as upward, and in the state where the lighting fixture 1 is attached to the ceiling 6, the direction in which light is irradiated is defined as downward. However, the up and down directions mentioned here are only directions defined for the convenience of explanation and are not necessarily the up and down directions in the actual use situation.

[0023] As shown in FIG. 3, a plurality of C-channels 9 are attached to a plurality of suspension bolts 8 provided in the ceiling space, and a plurality of M-bars (M) are attached below the C-channels 9 so as to intersect the C-channels 9, thereby forming a framework. The ceiling board 6a is formed by attaching it below the M-bars (M). Then, the lighting fixture 1 is attached to the mounting holes 6b provided in the ceiling board 6a by a plurality of suspension bolts 7 provided in the ceiling space. Note that since the suspension bolts 7 and 8, the C-channels 9, and the M-bars (M) can adopt various known shapes and mounting modes, their specific descriptions are omitted.

[0024] Also, in this embodiment, the lighting fixture main body 10 and the light source unit 30 are described as separate members in which the light source unit 30 can be attached to the lighting fixture main body 10, but it is not limited thereto. The lighting fixture main body 10 and the light source unit 30 may be integrally configured.

[0025] The lighting fixture 1 according to this embodiment may be in a non-dimming and non-color-adjusting mode, or may be configured to be dimmable and color-adjustable. Further, the lighting fixture 1 according to this embodiment is configured to be capable of communicating with an external lighting control controller via wireless communication such as wireless LAN or Bluetooth (registered trademark). In this mode, an operator can perform dimming, color-adjusting, lighting, and turning-off operations by operating the lighting control controller. In the lighting fixture 1 according to this embodiment, when configured to be wirelessly communicable, a communication device case (not shown) storing a communication device such as a communication antenna (not shown) and a communication control board (not shown) is provided separately from the lighting fixture main body 10. The communication device case and the lighting fixture main body 10 are connected by a flexible connecting member (not shown) having a predetermined length and are electrically connected by a flexible communication wire or the like. In this case, it is preferable that the flexible connecting member has a length that allows the communication device case to be disposed outside the projected area of the lighting fixture main body 10. With such a configuration, it is possible to shift and dispose the communication device case to a position that does not interfere with the C-channel 9 installed in the ceiling space. Note that, as the flexible connecting member, a member such as a leaf spring can be used.

[0026] [Configuration of Lighting Fixture Main Body] As shown in FIGS. 2 and 4, the lighting fixture main body 10 includes an upper wall portion 11, side wall portions 12 extending downward from both ends in the short side direction of the upper wall portion 11, and end covers 13 closing both ends in the longitudinal direction of the lighting fixture main body 10. The upper wall portion 11, the side wall portions 12, and the end covers 13 as a whole have a substantially concave cross-sectional shape opening downward and define a housing recess 14 capable of housing the light source unit 30. Further, the lighting fixture main body 10 further includes a power supply device 2 that can be housed in the housing recess 14, a power supply connector 3 for electrically connecting the power supply device 2 and the power receiving connector 4 of the light source unit 30, and a power supply terminal block 5 for electrically connecting the power supply device 2 and the power source of the facility.

[0027] In addition, in the present embodiment, the upper wall portion 11 and the side wall portion 12 of the lighting fixture main body 10 can be formed of a material such as aluminum, and the end cover 13 can be formed of a material such as a steel plate, but is not limited thereto. Further, in the present embodiment, the upper wall portion 11 and the side wall portion 12 are integrally formed, and the end cover 13 is formed as a separate member from the upper wall portion 11 and the side wall portion 12, but is not limited thereto. For example, the upper wall portion 11 and the side wall portion 12 may be configured as separate members, or the upper wall portion 11, the side wall portion 12, and the end cover 13 may be integrally formed.

[0028] As shown in FIGS. 2 and 4, the upper wall portion 11 is formed in an elongated shape extending along the longitudinal direction and has a rectangular shape in a top view. Further, the upper wall portion 11 has a shape in which the central portion in the short side direction is slightly recessed downward, and is configured to be able to accommodate the screw head of the screw 60a and the like. Specifically, the upper wall portion 11 includes an upper wall central portion 11a formed in the vicinity of the central portion in the short side direction of the upper wall portion 11, a pair of left and right inclined portions 11b that incline upward from both ends in the short side direction of the upper wall central portion 11a, and a pair of left and right upper wall edge portions 11c that extend from the inclined portions 11b toward the upper end portion of the side wall portion 12, and is formed in a concave cross-sectional shape. The upper wall central portion 11a and each inclined portion 11b form a concave portion capable of accommodating the screw head of the screw 60a and the like, and the concave portion has a depth such that the screw head does not protrude above each upper wall edge portion 11c.

[0029] Thus, since the central portion in the short side direction of the upper wall portion 11 has a shape slightly recessed downward, as shown in FIG. 2, in a state where the upper wall central portion 11a and the inner upper wall portion 19a described later are fixed by the screw 60a, the screw 60a does not exceed the length of the side wall portion 12 in the height direction, so that the dimension (thickness) in the height direction can be suppressed.

[0030] Also, the upper wall portion 11 may have a length longer than the installation width of the C-channel 9 provided in the ceiling space in the longitudinal direction. Specifically, the upper wall portion 11 may be formed to have a length of 900 mm or more in the longitudinal direction. Further, the upper wall portion 11 is formed to have a length that can be accommodated in the mounting holes 6b provided in the ceiling 6 in both the longitudinal and lateral directions.

[0031] Also, as shown in FIGS. 4 and 5, a plurality of spring through-holes 15 for passing through a V-shaped locking spring 34 described later are provided along the longitudinal direction in the upper wall portion 11. Specifically, two spring through-holes 15 are provided along the longitudinal direction near one longitudinal end portion of the upper wall portion 11, and two spring through-holes 15 are provided along the longitudinal direction near the other end portion. Further, a plurality of mounting through-holes 16 for passing through a mounting member 17 described later are provided along the longitudinal direction in the upper wall portion 11. Specifically, one mounting through-hole 16 is provided near the longitudinal center portion side end of the spring through-hole 15 provided on the longitudinal center portion side among the two spring through-holes 15 provided near one longitudinal end portion, and one mounting through-hole 16 is provided near the longitudinal center portion side end of the spring through-hole 15 provided on the longitudinal center portion side among the two spring through-holes 15 provided near the other longitudinal end portion.

[0032] The spring through-hole 15 has a rhombus shape with corners in the longitudinal and lateral directions in a top view. The V-shaped locking spring 34 passes through the spring through-hole 15 in a state of being elastically deformed toward the lateral center portion, and when it returns to both lateral end portions after passing through, the V-shaped locking spring 34 is configured to fit with the corners formed in the lateral direction. Also, the spring through-hole 15 is formed to have a length that allows the V-shaped locking spring 34 to return to both lateral end portions in the lateral direction, specifically, it is formed across a part of one upper wall edge portion 11c to a part of the other upper wall edge portion 11c.

[0033] The mounting through-hole 16 is formed in a substantially rectangular shape extending along the longitudinal direction in a top view. Specifically, in the longitudinal direction, when the lighting fixture main body 10 is mounted on the ceiling 6, the mounting through-hole 16 has a length sufficient for the mounting member 17, which will be described later, to move to a position where it does not interfere with the C-channel 9 provided on the ceiling back. In the short side direction, it has a length substantially matching the spring through-hole 15.

[0034] Also, as shown in FIGS. 2 to 4, a mounting member 17 for attaching the suspension bolt 7 installed on the ceiling 6 is provided on the upper wall portion 11, and the mounting member 17 is configured to be movable along the mounting through-hole 16. Further, the mounting member 17 includes an upper surface 17a having a through-hole for passing through the suspension bolt 7, a pair of side surfaces 17b extending downward from both ends of the upper surface 17a, and a lower surface 17c extending from the side surfaces 17b toward the side wall portion 12, and is formed in a substantially concave cross-sectional shape opening downward. The mounting member 17 is configured to accommodate the nut portion 7a of the suspension bolt 7 in the space formed by the upper surface 17a, the side surfaces 17b, and the upper wall portion 11 when the suspension bolt 7 is attached to the mounting member 17.

[0035] Also, when the mounting member 17 penetrates the mounting through-hole 16 from below upward, the lower surface 17c of the mounting member 17 is configured to engage with the portion formed between the mounting through-hole 16 and the side wall portion 12 of the upper wall edge portion 11c. Further, the mounting member 17 is formed in a size capable of penetrating the mounting through-hole 16 in both the longitudinal direction and the short side direction. Specifically, in the longitudinal direction, it has a length smaller than that of the mounting through-hole 16.

[0036] As shown in FIGS. 2 and 4, on one side surface 17b of the mounting member 17, a mounting auxiliary member 18 capable of suppressing the vertical movement of the mounting member 17 is provided in a state where the lighting fixture main body 10 is attached to the suspension bolt 7. Specifically, the mounting auxiliary member 18 includes an intermediate portion 18a facing a portion formed between the mounting through-hole 16 and the side wall portion 12 in the upper wall edge portion 11c, an upper auxiliary portion 18b extending upward from the intermediate portion 18a, and a lower auxiliary portion 18c extending downward from the intermediate portion 18a, and is formed in a substantially stepped cross-section. By fixing the upper auxiliary portion 18b and one side surface 17b of the mounting member 17 with a screw 60c, a portion formed between the mounting through-hole 16 and the side wall portion 12 in the upper wall edge portion 11c interferes with the intermediate portion 18a, and the vertical movement of the mounting member 17 is suppressed.

[0037] Since the mounting member 17 has such a configuration, it is not necessary to provide a space for accommodating the nut portion 7a of the suspension bolt 7 in the accommodation recess 14 described later, and the power supply device 2 and the light source unit 30 can be arranged along the short side direction of the lighting fixture main body 10. Therefore, the dimension (thickness) in the height direction of the lighting fixture 1 can be reduced.

[0038] The side wall portion 12 extends vertically downward from both ends in the short side direction of the upper wall portion 11 and is formed over the entire length in the longitudinal direction of the upper wall portion 11. Further, as shown in FIGS. 3 and 6, the side wall portion 12 is formed to have a length that does not interfere with the C-channel 9 behind the ceiling in the height direction in a state where the lighting fixture 1 is attached to the ceiling 6. Specifically, as shown in FIG. 6, the length L in the height direction of the side wall portion 12 is within the range between the lower surface of the ceiling board 6a and the lower end of the C-channel 9, that is, shorter than the combined length of the length (19 mm) of the M-bar (M) in the height direction and the thickness (9.5 mm) of the ceiling board 6a (28.5 mm). More specifically, the side wall portion 12 is preferably formed to be 28.5 mm or less in the height direction, and more preferably 25 mm or less in the height direction. Note that the length L in the height direction of the side wall portion 12 is the length from the upper surface of the locking portion 12b to the upper surface of the upper wall edge portion 11c.

[0039] Also, as shown in FIGS. 2 and 6, the side wall portion 12 includes a folded-back portion 12a formed by folding inward from the lower end portion of the side wall portion 12, and a locking portion 12b extending vertically outward from the lower end portion of the side wall portion 12. Specifically, the folded-back portion 12a has a shape that is bent inward and upward from the lower end portion of the side wall portion 12, and is formed over the entire longitudinal direction of the side wall portion 12. Further, when the light source unit 30 is mounted on the lighting fixture main body 10, the folded-back portion 12a is configured to fill the gap between the side wall portion 12 and the light source unit 30 housed in the housing recess 14 in a bottom view. The locking portion 12b is formed over the entire longitudinal direction of the side wall portion 12, and is configured to lock with the ceiling board 6a when the lighting fixture main body 10 is attached to the ceiling 6.

[0040] As shown in FIGS. 1 and 4, the end cover 13 is configured to close both longitudinal ends of the lighting fixture main body 10, and is fixed to the side wall portion 12 by screws 60b. Further, a locking piece 13a extending in the short direction is formed at the lower end of the end cover 13, and is configured to lock with the ceiling board 6a when the lighting fixture main body 10 is attached to the ceiling 6. Specifically, the locking piece 13a is formed by bending from the lower end of the end cover 13 toward the outside in the longitudinal direction, and has a length in the short direction such that both short ends of the locking piece 13a coincide with the outer ends in the short direction of the locking portion 12b of the side wall portion 12.

[0041] Note that the end cover 13 may be configured to be formed only at a portion of the longitudinal end of the lighting fixture main body 10 where the lighting fixtures 1 are not connected, when a plurality of lighting fixtures 1 are continuously arranged side by side on the ceiling board 6a. That is, the end cover 13 may not be formed at the connection portion of the plurality of lighting fixtures 1.

[0042] 1, the accommodating recess 14 is an open space formed by the top wall 11, the side wall 12, and the end cover 13. Specifically, the accommodating recess 14 includes a power supply accommodating section 19 capable of accommodating the power supply device 2, and a light source unit accommodating section 20 capable of accommodating the light source unit 30. The accommodating recess 14 includes the power supply accommodating section 19 on one of the side wall 12 sides, and is formed asymmetrically with respect to the center in the short direction.

[0043] 2 and 5, the power supply accommodating section 19 is an elongated hollow space formed on one of the side walls 12 of the accommodating recess 14 and extending in the longitudinal direction. Specifically, the power supply accommodating section 19 is formed in an elongated shape from the vicinity of the longitudinal center end of one of the mounting through holes 16 to the vicinity of the longitudinal center end of the other mounting through hole 16. The power supply accommodating section 19 also includes an inner upper wall section 19a facing the upper wall center section 11a of the upper wall section 11, an inner side wall section 19b extending downward from the inner upper wall section 19a, an inner lower wall section 19c extending from the inner side wall section 19b toward the side wall section 12 on which the power supply accommodating section 19 is formed, and a power supply accommodating section cover (not shown) that closes both longitudinal ends of the power supply accommodating section 19.

[0044] The power supply accommodating section 19 is a hollow space enclosed by one upper wall edge 11c, the side wall 12 on the side where the power supply accommodating section 19 is formed, an inner side wall 19b, an inner lower wall 19c, and a power supply accommodating section cover, and is configured to be able to accommodate the power supply device 2 within this space. Specifically, the power supply accommodating section 19 has a size that is approximately one-third of the size of the accommodating recess 14 in the short direction. The power supply accommodating section 19 is configured to be located above the return portion 12a. Specifically, the inner lower wall 19c of the power supply accommodating section 19 is configured to contact the tip of the return portion 12a.

[0045] The inner upper wall portion 19a is formed to horizontally extend from the vicinity of the central portion of the lighting fixture main body 10 to the start point of inclination of one inclined portion 11b in the short side direction. Further, the inner upper wall portion 19a is fixed to the upper wall central portion 11a by a screw 60a. The inner side wall portion 19b is formed to vertically extend downward from the end portion on the inclined portion 11b side of the inner upper wall portion 19a, and the vicinity of its lower end portion is bent outward. Further, the portion of the inner side wall portion 19b formed to vertically extend has a length substantially matching that of the inner upper wall portion 19a, and the portion of the inner side wall portion 19b formed to be bent outward has an inclination degree and length substantially matching those of the inclined portion 11b. The inner lower wall portion 19c is formed to horizontally extend from the lower end portion of the inner side wall portion 19b to the side wall portion 12 outward. Further, the inner lower wall portion 19c is formed to have a length substantially matching that of the upper wall edge portion 11c.

[0046] As shown in FIG. 2, the light source unit accommodating portion 20 is a space formed in a portion of the accommodating recess 14 excluding the power supply accommodating portion 19. Specifically, the light source unit accommodating portion 20 is an open space formed by the inner side wall portion 19b, the side wall portion 12 on the side where the power supply accommodating portion 19 is not formed, and the upper wall portion 11 between the inner side wall portion 19b and the side wall portion 12.

[0047] As shown in FIG. 2, the power supply device 2 is formed to have a size that can be accommodated in the power supply accommodating portion 19, and is configured to supply power to a plurality of light sources 31 described later via a power supply connector 3 and a power receiving connector 4. Specifically, the power supply device 2 includes a long and rectangular power supply substrate (not shown) that can be accommodated in the power supply accommodating portion 19, various power circuit forming components (not shown) mounted on the power supply substrate, and a power supply case member (not shown) that covers the power supply substrate and the power circuit forming components. Further, the power supply device 2 is arranged such that its lower end is positioned below the lower surface of the substrate 32, and is fixed to one side wall portion 12 by a screw 60d.

[0048] The power supply board is a long and rectangular printed circuit board having a length that does not exceed the length of the power supply housing portion 19 in the longitudinal direction. The power supply circuit forming components are various circuit components necessary for generating the light emission power of a plurality of light sources 31 described later. The power supply case member is a long and substantially semi-cylindrical metal cover member having a length in the short direction that can be accommodated in the power supply housing portion 19 and a length in the longitudinal direction substantially the same as the length in the longitudinal direction of the power supply board, and is configured to cover the periphery of the power supply board on which the power supply circuit forming components are mounted except for the longitudinal end portions.

[0049] As shown in FIG. 5, the power supply connector 3 is provided on the side wall portion 12 on the side where the power supply device 2 is provided, and has a length that substantially coincides with the upper wall edge portion 11c in the short direction. Further, the power supply connector 3 is configured to be connectable to the power reception connector 4 provided on the light source unit 30. The power supply terminal block 5 is a terminal block that connects the power source of the facility and the wiring of the power supply device 2.

[0050] One end of the power supply device 2 is connected to the power supply connector 3 by wiring, and the other end is connected to the power supply terminal block 5 provided on the side wall portion 12 on the side where the power supply device 2 is not provided by wiring. Further, a wiring through hole through which the wiring for electrically connecting the power supply terminal block 5 and the power supply device 2 can penetrate is formed in the side wall portion 12 on the side where the power supply device 2 is not provided.

[0051] [Configuration of Light Source Unit] As shown in FIGS. 1 and 7, the light source unit 30 is formed in a long shape extending along the longitudinal direction, and is configured to be detachable within the accommodation recess 14 of the lighting fixture main body 10. Specifically, as shown in FIG. 2, it is configured to be mounted within the lighting fixture main body 10 between the power supply housing portion 19 and the other side wall portion 12 where the power supply housing portion 19 is not formed, that is, within the light source unit accommodation portion 20. Further, the light source unit 30 includes a unit main body 40, a long substrate 32 on which the light sources 31 are arranged along the longitudinal direction, side covers 33 that close both longitudinal ends of the unit main body 40, and a V-shaped locking spring 34 for attaching the unit main body 40 to the lighting fixture main body 10.

[0052] As shown in FIGS. 2 and 7, the unit main body 40 is formed in a long shape having a length substantially matching that of the lighting fixture main body 10 in the longitudinal direction. As shown in FIG. 2, when mounted in the accommodation recess 14 of the lighting fixture main body 10, it has a shape that does not interfere with the power supply accommodation portion 19. Specifically, the unit main body 40 is formed in a substantially trapezoidal cross-section including an upper surface portion 41, a side surface portion 42 extending downward from the upper surface portion 41, and a lower surface portion 43 having a diffusion member 43b for diffusing light emitted from a plurality of light sources 31. The upper surface of the upper surface portion 41 faces the upper wall portion 11 when mounted on the lighting fixture main body 10, and is configured to hold the substrate 32 on the lower surface side thereof. Further, the unit main body 40 is configured such that the upper surface portion 41 and the lower surface portion 43 are not close to each other in the height direction.

[0053] In this embodiment, the portion of the unit main body 40 excluding the diffusion member 43b is described as being integrally formed of a material such as aluminum, but is not limited thereto. For example, the upper surface portion 41, the side surface portion 42, and the lower surface portion 43 may be configured as separate members.

[0054]

[0055] As shown in FIGS. 7 and 8, a rail portion 41a engageable with a mounting bracket 35 described later is formed along the longitudinal direction of the unit main body 40 on the upper surface of the upper surface portion 41. Specifically, the rail portion 41a projects upward from one end in the short direction of the upper surface portion 41, and has a substantially hook-shaped cross-section with its upper end bent outward. When the mounting bracket 35 is inserted along the longitudinal direction from one end in the longitudinal direction of the unit main body 40, the engaging surface 35b of the mounting bracket 35 described later and the hook portion of the rail portion 41a are configured to engage with each other.As shown in FIGS. 2 and 8, a substrate 32 is disposed on the lower surface of the upper surface portion 41 and is fixed to the upper surface portion 41 by screws 60e. A plurality of light sources 31 are arranged along the longitudinal direction at one end side in the short side direction of the substrate 32, and a screw through hole for passing the screw 60e is formed at the other end side in the short side direction. Specifically, the substrate 32 has a left-right asymmetric configuration in which the distance in the short side direction from the center of the light source row composed of the plurality of light sources 31 to the end on the power supply accommodating portion 19 side is smaller than the distance in the short side direction to the end on the opposite side. In this way, since the substrate 32 has a left-right asymmetric configuration in which the light source row composed of the plurality of light sources 31 is closer to the power supply accommodating portion 19 side, in a state where the light source unit 30 is mounted in the accommodation recess 14, the substrate 32 is configured to be positioned at the center in the short side direction of the lighting fixture main body 10. The upper surface portion 41 has a length that can be accommodated between the inner side wall portion 19b of the lighting fixture main body 10 and the side wall portion 12 on the side where the power supply accommodating portion 19 is not provided in the short side direction. Further, the upper surface portion 41 is arranged in parallel with the power supply accommodating portion 19. Specifically, the substrate 32 disposed on the lower surface of the upper surface portion 41 and the power supply device 2 accommodated in the power supply accommodating portion 19 are configured to be arranged along the short side direction of the lighting fixture main body 10 inside the lighting fixture main body 10.

[0056] As shown in FIGS. 7 and 8, when the light source unit 30 is mounted in the accommodation recess 14, the side surface portion 42 has a power supply accommodating portion side side surface portion 42a located on the power supply accommodating portion 19 side and a side wall portion side side surface portion 42b located on the side wall portion 12 side on the side where the power supply accommodating portion 19 is not provided. The power supply accommodating portion side side surface portion 42a is formed by bending outward downward from the end of the upper surface portion 41, and has a shape that coincides with a part of the inner side wall portion 19b and a part of the inner lower wall portion 19c of the power supply accommodating portion 19 in a state where the light source unit 30 is mounted in the accommodation recess 14. The side wall portion side side surface portion 42b is formed to extend vertically downward from the end of the upper surface portion 41. That is, the unit main body 40 is formed asymmetrically left and right with the center in the short side direction as a boundary.

[0057] 7, a power receiving connector 4 is disposed on the outside of the power supply housing side surface portion 42a. The power receiving connector 4 is electrically connected to the power supply connector 3 and supplies power to the plurality of light sources 31 via wiring. Specifically, the power receiving connector 4 is disposed in a position where it can be connected to the power supply connector 3 when the light source unit 30 is attached to the lighting fixture body 10, and is fixed to the unit body 40 by various fixing members such as metal fittings.

[0058] 2 and 7, the lower surface portion 43 has a pair of holding portions 43a, one on each side in the lateral direction, formed at the lower end of the side surface portion 42, and a diffusion member 43b configured to be attachable to the holding portions 43a. The holding portions 43a are formed with a generally triangular cross section having an inclined surface on the outside. When the light source unit 30 is attached to the accommodating recess 14, the inclined surface of the holding portions 43a matches the return portion 12a of the side wall portion 12 located above the holding portions 43a, and the bottom surface of the holding portions 43a is formed horizontally with the bottom surface of the locking portion 12b. Furthermore, an opening with a generally U-shaped cross section that opens toward the center in the lateral direction is formed inside the holding portions 43a, and is configured to be able to hold the diffusion member 43b inserted from one end in the longitudinal direction.

[0059] The diffusion member 43b is formed in a long rectangular plate shape extending along the longitudinal direction, and is configured to be insertable into the holding portion 43a. Specifically, the diffusion member 43b is made of a material such as polycarbonate, and is configured to diffuse the light emitted from the light source 31 to the outside.

[0060] As shown in FIG. 8 , the substrate 32 has a width length that can be accommodated in the upper surface 41 of the unit body 40, and is formed in a rectangular sheet shape that extends across the entire longitudinal area of the upper surface 41. The light sources 31 are arranged in a row along the longitudinal direction on the underside of the substrate 32. The light sources 31 may be arranged in two or more rows along the longitudinal direction. When two or more rows of light sources 31 are arranged on the substrate 32, two rows of light sources 31 may be arranged on one substrate 32, or two or more substrates 32 may each have a light source 31. One longitudinal end of the substrate 32 is electrically connected to the power receiving connector 4 by wiring, and is configured to emit light from the multiple light sources 31 using power supplied from the power supply 2.

[0061] 7, the side covers 33 are configured to close both longitudinal ends of the light source unit 30. Specifically, the side covers 33 are fixed to the longitudinal ends of the light source unit 30 with screws 60f. One of the side covers 33 has a through hole formed therein for electrically connecting the board 32 and the power receiving connector 4 via wiring.

[0062] 7, the V-shaped locking spring 34 is formed into a generally V-shape as a whole, and includes a coil-shaped central portion 34a and a pair of left and right protruding portions 34b protruding outward in the short side direction from the central portion 34a. Temporary fastening portions 34c for temporarily fastening the light source unit 30 to the lighting fixture body 10 are formed at the end of each protruding portion 34b.

[0063] Further, the V-shaped locking spring 34 is configured to be attachable to the lighting fixture body 10 by passing through the spring through-hole 15 in a state where the protruding portion 34b is elastically deformed toward the center in the short direction and restoring to both outer sides in the short direction in the penetrated state. Specifically, when an external pressure is applied to the protruding portion 34b toward the center in the short direction with respect to the V-shaped locking spring 34, the protruding portion 34b is elastically deformed toward the center in the short direction. In this elastically deformed state, the V-shaped locking spring 34 passes through the spring through-hole 15 of the lighting fixture body 10. After passing through, when the external pressure is released, it restores toward the outer side in the short direction, and the protruding portion 34b engages with the corner formed at the end in the short direction of the spring through-hole 15, thereby being configured to be attachable to the lighting fixture body 10.

[0064] Also, as shown in FIG. 7, at the lower end of the V-shaped locking spring 34, a mounting bracket 35 capable of coupling the V-shaped locking spring 34 and the unit body 40 is provided. The mounting bracket 35 is configured to be movable in the longitudinal direction with respect to the unit body 40 for the V-shaped locking spring 34. Further, the mounting bracket 35 is formed in a substantially concave cross-section that opens downward and has a mounting surface 35a facing the upper surface portion 41 of the unit body 40 and a pair of engaging surfaces 35b extending downward from the mounting surface 35a.

[0065] In addition, near the center in the longitudinal direction and at both ends in the short direction of the mounting bracket 35, through-holes are formed from the mounting surface 35a to the engaging surface 35b. The V-shaped locking spring 34 passes through the through-holes formed at both ends in the short direction of the mounting bracket 35, and by forming the central portion 34a in a coil shape with the mounting surface 35a as the axis, the V-shaped locking spring 34 is configured to be attachable.

[0066] Furthermore, the mounting bracket 35 is configured to be attachable to the unit main body 40. Specifically, one engagement surface 35b of the mounting bracket 35 is bent toward the center in the short direction, and when the mounting bracket 35 is inserted into the top surface portion 41 from one end in the longitudinal direction, the bent portion of the engagement surface 35b engages with a hook portion of the rail portion 41a of the top surface portion 41, thereby enabling the mounting bracket 35 to be attached to the unit main body 40. After the mounting bracket 35 is attached, the top surface portion 41 is movable along the longitudinal direction within the installation width of a plurality of screws 60g provided on the top surface portion 41 of the unit main body 40.

[0067] A plurality of V-shaped locking springs 34 and mounting brackets 35 are arranged along the longitudinal direction of the unit body 40. Specifically, one V-shaped locking spring 34 and one mounting bracket 35 are provided near one longitudinal end of the upper surface portion 41, and one is provided near the other end.

[0068] [How to use the lighting fixtures] Next, a description will be given of an example of how the lighting fixture 1 according to the first embodiment is used. As shown in FIG. 9 , the lighting fixtures 1 according to the first embodiment can be installed in a continuous line on a ceiling panel 6a without any gaps. When installing multiple lighting fixtures 1 in series, lighting fixtures 1 of different lengths may be combined as needed to achieve a desired overall length. For example, among multiple lighting fixtures 1 arranged in series, the end lighting fixtures 1 arranged at both ends and the connecting lighting fixtures 1 arranged between them may have different lengths. Alternatively, multiple types of connecting lighting fixtures 1 with different lengths may be prepared and combined as needed to achieve a desired length. Furthermore, end covers 13 may not be provided between the end lighting fixtures 1 and the connecting lighting fixtures 1, or between the connecting lighting fixtures 1 themselves, and these may be connected by connecting parts (not shown).

[0069] To install the lighting fixture 1 on the ceiling board 6a, first, the lighting fixture body 10 is inserted into the mounting hole 6b provided in the ceiling 6 until the locking portion 12b of the side wall portion 12 contacts the ceiling board 6a. During this insertion, the suspension bolt 7 installed in the ceiling space is passed through a through-hole formed in the upper surface 17a of the mounting member 17, and the nut portion 7a is screwed onto the threaded portion (not shown) of the suspension bolt 7 via the mounting through-hole 16, thereby locking the nut portion 7a to the upper surface 17a. In this manner, the lighting fixture body 10 is attached to the ceiling 6. After the lighting fixture body 10 has been attached to the ceiling 6, the power terminal block 5 of the lighting fixture body 10 is connected to the facility's power source by wiring.

[0070] Next, the light source unit 30 is inserted into the accommodating recess 14 with the V-shaped locking spring 34 of the light source unit 30 elastically deformed toward the center in the short side direction, and the temporary fastening portion 34c of the V-shaped locking spring 34 is inserted into the spring through-hole 15 of the lighting fixture body 10. After this insertion, the V-shaped locking spring 34 is restored to its original elastic deformation, and the temporary fastening portion 34c of the V-shaped locking spring 34 is hooked into the spring through-hole 15 of the lighting fixture body 10, thereby temporarily fastening the light source unit 30 to the lighting fixture body 10. Then, the power supply connector 3 of the lighting fixture body 10 and the power receiving connector 4 of the light source unit 30 are connected. Thereafter, by pushing the entire light source unit 30 up relative to the lighting fixture body 10, the V-shaped locking spring 34 passes through the spring through hole 15 while elastically deforming due to the reaction force from the spring through hole 15, and when the width between the pair of protrusions 34b of the V-shaped locking spring 34 becomes smaller than the width of the spring through hole 15, the V-shaped locking spring 34 returns to its original state. Then, due to the restoration of the V-shaped locking spring 34, the base ends of the pair of protrusions 34b of the V-shaped locking spring 34 are locked into the spring through hole 15, and the light source unit 30 is attached to the lighting fixture body 10. Note that the method of removing the light source unit 30 can be performed by reversing the above-mentioned attachment procedure, and therefore a description thereof will be omitted.

[0071] [Advantages of the lighting fixture according to the first embodiment] As described above, the lighting fixture 1 according to the first embodiment includes a long lighting fixture body 10 attached to an installation location, a long light source unit 30 including a long substrate 32 on which light sources 31 are arranged along the longitudinal direction, and a power supply device 2 that supplies power to the light sources 31. The substrate 32 and the power supply device 2 are configured to be arranged along the short-side direction of the lighting fixture body 10 inside the lighting fixture body 10.

[0072] According to the lighting fixture 1 having such a configuration, since the substrate 32 and the power supply device 2 are arranged along the short-side direction of the light source unit 30, it is possible to prevent the dimensions (thickness) of the lighting fixture 1 in the height direction from increasing. Therefore, it is possible to prevent the lighting fixture 1 from interfering with the C-channel 9 in the ceiling space, and there is no need to install the lighting fixture avoiding the C-channel 9. As a result, a large gap does not occur between the lighting fixtures 1 installed on the ceiling 6, and it is possible to realize a highly designed lighting mode in which a single linear illumination light is created by a plurality of lighting fixtures.

[0073] Further, in the lighting fixture 1 according to the first embodiment, the lighting fixture body 10 includes a housing recess 14 having an upper wall portion 11 and side wall portions 12 extending downward from both ends in the short-side direction of the upper wall portion 11. The housing recess 14 includes a power supply housing portion 19 capable of housing the power supply device 2. The power supply housing portion 19 is a long hollow space extending along the longitudinal direction formed on one side wall portion 12 side of the housing recess 14. The light source unit 30 is configured to be detachable within the housing recess 14 and has a shape that does not interfere with the power supply housing portion 19 when mounted in the housing recess 14.

[0074] According to the lighting fixture 1 having such a configuration, since the power supply device 2 and the light source unit 30 can be housed within the height range of the side wall portion 12, the thickness of the lighting fixture 1 in the height direction can be reduced, and it is possible to prevent the lighting fixture 1 from protruding significantly from the installation location.

[0075] Furthermore, in the lighting fixture 1 according to the first embodiment, the light source unit 30 is mounted between the power supply housing 19 and the other side wall 12 on which the power supply housing 19 is not formed.

[0076] According to the lighting fixture 1 having such a configuration, the light source unit 30 and the power supply device 2 are not housed in parallel in the height direction, so that the thickness of the lighting fixture 1 in the height direction can be reduced.

[0077] Furthermore, in the lighting fixture 1 of the first embodiment, the lighting fixture body 10 further includes a return portion 12a formed by folding back inward from the lower end of the side wall portion 12, and the return portion 12a is configured to fill the gap between the side wall portion 12 and the light source unit 30 accommodated in the accommodation recess 14 when viewed from below.

[0078] With the lighting fixture 1 having such a configuration, when the lighting fixture 1 installed on the ceiling 6 is turned on, no shadow is created between the side wall portion 12 and the light source unit 30, thereby realizing a lighting configuration with a high level of design.

[0079] Additionally, in the lighting device 1 according to the first embodiment, the power supply housing 19 is located above the return portion 12a.

[0080] In the lighting fixture 1 having such a configuration, the power supply housing 19 is formed within the width of the upper wall portion 11 and the return portion 12a, so that the thickness of the lighting fixture 1 in the height direction can be reduced.

[0081] In the lighting fixture 1 according to the first embodiment, the light source unit 30 is formed asymmetrically with respect to the center in the short side direction.

[0082] With a lighting fixture 1 having such a configuration, the light source unit 30 can be attached to the lighting fixture body 10 without interference between the light source unit 30 and the power supply unit 2 in the height direction, thereby reducing the thickness of the lighting fixture 1 in the height direction.

[0083] Furthermore, in the lighting fixture 1 according to the first embodiment, the lower end of the power supply device 2 is positioned below the lower surface of the substrate 32.

[0084] According to the lighting fixture 1 having such a configuration, since the distance between the substrate 32 and the diffusion member 43b can be ensured, uneven lighting can be suppressed.

[0085] Moreover, in the lighting fixture 1 according to the first embodiment, the light source unit 30 further includes an upper surface portion 41 that faces the upper wall portion 11 when mounted on the lighting fixture body 10 and can hold the substrate 32, and a lower surface portion 43 having a diffusion member 43b for diffusing the light emitted from the plurality of LEDs.

[0086] According to the lighting fixture 1 having such a configuration, since the distance between the substrate 32 and the diffusion member 43b can be greatly ensured, uneven lighting can be significantly reduced.

[0087] [Modification Example] The lighting fixture according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the technical idea of the present invention.

[0088] [Second Embodiment] The lighting fixture 100 according to the second embodiment will be described. Note that members identical to those of the lighting fixture 1 according to the first embodiment will be described with the same reference numerals. Also, since the usage method of the lighting fixture 100 according to the second embodiment is the same as that of the lighting fixture 1 according to the first embodiment, the description thereof will be omitted. The lighting fixture 100 according to the second embodiment differs from the lighting fixture 1 according to the first embodiment in that the light source unit 30 further includes a light guide panel 50.

[0089] 10 and 11 , the light guide panel 50 is formed in an elongated shape extending along the longitudinal direction, and has the same length in the longitudinal direction as the lower surface portion 43. Specifically, the light guide panel 50 is formed in a rectangular cross section having an incident surface 51 facing the light source 31 and a light guide portion 52 extending downward from the incident surface 51. The light guide panel 50 is formed from a material such as acrylic resin.

[0090] 11, incident surface 51 has a width in the short side direction that is approximately the same as the width of light sources 31 arranged on substrate 32, and is configured so that light emitted from multiple light sources 31 is incident on incident surface 51. Furthermore, light guiding section 52 is configured so that light incident on incident surface 51 is diffused upward and downward from the side surfaces.

[0091] 11 , the light guide panel 50 is configured to be attachable to the lower surface portion 43 by being inserted into an insertion hole provided in the lower surface portion 43. Specifically, the diffusion members 43b of the lower surface portion 43 are bent upward near the center in the short side direction to form an insertion hole large enough to insert the light guide panel 50, and after the light guide panel 50 is inserted into the insertion hole, the light guide panel 50 and the pair of bent diffusion members 43b are fixed with screws 60h, thereby enabling the light guide panel 50 to be attached to the lower surface portion 43.

[0092] [Advantages of the lighting fixture according to the second embodiment] In the lighting device 100 according to the second embodiment, the light source unit 30 further includes a light guide panel 50 having an incident surface 51 facing the plurality of LEDs and a light guide portion 52 extending downward from the incident surface 51.

[0093] According to lighting fixture 100 having such a configuration, light emitted from lighting fixture 100 is diffused not only downward but also upward, so that light can be diffused over a wider range.

[0094] [Other variations] For example, in the above-described embodiment, the power supply housing portion 19 has been described as being formed on one side wall portion 12 side of the housing recess 14. However, the present invention is not limited thereto. For example, it may be formed on both side wall portion 12 sides.

[0095] Further, in the above-described embodiment, the lighting fixture main body 10 further includes a folded-back portion 12a formed by folding inward from the lower end portion of the side wall portion 12. The folded-back portion 12a has been described as being configured to fill a gap between the side wall portion 12 and the light source unit 30 housed in the housing recess 14 in a bottom view. However, the present invention is not limited thereto, and any other configuration may be used as long as it can fill the gap between the side wall portion 12 and the light source unit 30.

[0096] Furthermore, in the above-described embodiment, the light source unit 30 has been described as being formed asymmetrically left and right with the center in the short side direction as a boundary. However, the present invention is not limited thereto, and it is sufficient that the substrate 32 and the power supply device 2 are arranged along the short side direction, and the light source unit 30 may be formed symmetrically left and right.

[0097] Also, in the above-described embodiment, the light source unit 30 has been described as being attached to the lighting fixture main body 10 by the V-shaped locking spring 34. However, the present invention is not limited thereto, and it may be attached to the lighting fixture main body 10 by various known members.

Description of Reference Numerals

[0098] 1, 100 Lighting fixture, 2 Power supply unit, 3 Power supply connector, 4 Power receiving connector, 5 Power supply terminal block, 6 Ceiling, 6a Ceiling plate, 6b Mounting hole, 7, 8 Hanging bolt, 7a Nut portion, 9 C channel, MM bar, 10 Lighting fixture body, 11 Upper wall portion, 11a Upper wall center portion, 11b Sloped portion, 11c Upper wall edge portion, 12 Side wall portion, 12a Return portion, 12b Locking portion, 13 End cover, 13a Locking piece, 14 Storage recess, 15 Spring through hole, 16 Mounting through hole, 17 Mounting member, 17a Upper surface, 17b Side surface, 17c Lower surface, 18 Mounting auxiliary member, 18a Middle portion, 18b Upper auxiliary portion, 18c Lower auxiliary portion, 19 Power supply storage portion, 19a Inner upper wall portion, 19b Inner side wall portion, 19c inner lower wall portion, 20 light source unit storage portion, 30 light source unit, 31 light source, 32 board, 33 side cover, 34 V-shaped locking spring, 34a central portion, 34b protruding portion, 34c temporary fastening portion, 35 mounting bracket, 35a mounting surface, 35b engagement surface, 40 unit body, 41 upper surface portion, 41a rail portion, 42 side portion, 42a power supply storage portion side surface portion, 42b side wall portion side surface portion, 43 lower surface portion, 43a holding portion, 43b diffusion member, 50 light guide panel, 51 incident surface, 52 light guide portion, 60a to 60h screws

Claims

1. A long lighting fixture body attached to an installation location, A long light source unit including a long substrate with a light source arranged along the longitudinal direction, A power supply device for supplying power to the light source are provided, The lighting fixture body has a housing recess having an upper wall portion and side wall portions extending downward from both ends in the short direction of the upper wall portion, The housing recess has a power supply housing portion capable of housing the power supply device, The power supply housing portion is a long hollow space extending along the longitudinal direction formed on one side wall portion side of the housing recess, The light source unit is configured to be detachable within the housing recess, The light source unit, is configured to be able to hold the substrate, and when the light source unit is mounted within the housing recess, an upper surface portion located between the power supply housing portion and the other side wall portion where the power supply housing portion is not formed, Of the short direction ends of the upper surface portion, a side surface portion on the power supply housing portion side extending downward from the end on the power supply housing portion side, Of the short direction ends of the upper surface portion, a side surface portion on the side wall portion side extending downward from the end on the other side wall portion side are provided, The side surface portion on the power supply housing portion side has a shape that does not interfere with the power supply housing portion when the light source unit is mounted within the housing recess, The substrate and the power supply device are configured to be arranged along the short direction of the lighting fixture body inside the lighting fixture body A lighting fixture characterized by this.

2. The substrate is formed such that the distance in the short direction from the light source to the end on the power supply housing portion side is shorter than the distance in the short direction from the light source to the end on the other side wall portion side [[ID= ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The light source unit is formed asymmetrically on the left and right with the center in the short side direction as a boundary. The lighting fixture according to any one of claims 1 to 5, characterized in that.

7. The lower end of the power supply device is located below the lower surface of the substrate. The lighting fixture according to any one of claims 1 to 6, characterized in that.

8. The light source is a plurality of LEDs arranged along the longitudinal direction of the substrate. The lighting fixture according to any one of claims 1 to 7, characterized in that.

9. The light source unit further includes a lower surface portion having a diffusion member for diffusing the light emitted from the plurality of LEDs. The lighting fixture according to claim 8, characterized in that.

10. The light source unit further includes a light guide panel having an incident surface facing the plurality of LEDs and a light guide portion extending downward from the incident surface. The lighting fixture according to claim 8, characterized in that.

Images