JP2020107581A - Lamp fitting - Google Patents

Abstract

To provide a lamp fitting which can deal with expansion and contraction of a translucent cover caused by a temperature change while reducing a shadowing area near a side surface of the lamp fitting.SOLUTION: A tip part of a cover support member protrudes to an outside of a plate from an area overlapping with the plate. A translucent cover has: a principal surface part which faces a light source through a space; a side surface part covering the side of the space; and an upper end part which protrudes from the side surface part to a lamp body and is formed continuing along a side part of the lamp body. An upper end part of the translucent cover partially overlaps with the tip part of the cover support member to cause the translucent cover to be supported by the lamp body.SELECTED DRAWING: Figure 9

Description

The present disclosure relates to a lamp.

As a mounting structure of the translucent cover to the chassis in the lighting device, for example, Patent Document 1 discloses a structure in which the bent outer peripheral edge portion of the translucent cover is mounted to the chassis.

JP, 2012-22849, A

The present disclosure provides a lamp that can cope with expansion and contraction of a translucent cover due to temperature change while suppressing a shadowed area near the side surface of the lamp.

According to one aspect of the present disclosure, a plate having a light source arrangement surface and a back surface opposite to the light source arrangement surface, a plurality of light sources arranged on the light source arrangement surface of the plate, and fixed to the plate A lamp main body having a plurality of cover support members, a fitting adapter provided on the back surface of the plate, and a translucent cover are provided, and a tip end portion of the cover support member overlaps the plate. From the plate to the outside of the plate, the translucent cover projects from the main surface portion facing the light source across a space, the side surface portion covering the side of the space, and the side surface portion toward the lamp body. And has an upper end portion formed continuously along the side portion of the lamp body, and the upper end portion of the translucent cover partially overlaps with the front end portion of the cover support member. There is provided a lamp in which a translucent cover is supported by the lamp body.

According to the lamp of the present disclosure, it is possible to cope with expansion and contraction of the translucent cover due to temperature change while suppressing a shadowed area near the side surface of the lamp.

It is a side view showing the state where the lighting fixture of one embodiment of the present invention was attached to the ceiling material. FIG. 3 is a plan view of a light emitting surface of the lamp according to the embodiment of the present invention. It is a perspective view of the element located in the back side of the ceiling material among the elements shown in FIG. It is a perspective view of the back of the lamp of one embodiment of the present invention. It is a top view of the light source module of one embodiment of the present invention. It is a schematic cross section of a light source module and a cover of one embodiment of the present invention. It is a light distribution characteristic view of the light source of one embodiment of the present invention. It is a perspective view showing a support structure of a translucent cover to a lamp body in a lamp of one embodiment of the present invention. It is sectional drawing which shows the support structure of the translucent cover which used the cover support member in the lamp of one Embodiment of this invention. FIG. 6 is a cross-sectional view showing a positional relationship between a light-transmitting cover and a lamp body in a portion where the cover support member is not arranged in the lamp according to the embodiment of the present invention. It is a perspective view of an attachment metal fitting of one embodiment of the present invention. FIG. 4 is a bottom view of the mounting fitting of the embodiment of the present invention fitted in the mounting hole of the ceiling material. It is a perspective view showing the fitting structure of the fitting and the fitting adapter of one embodiment of the present invention. It is a sectional perspective view showing the fitting structure of the fitting and the fitting adapter of one embodiment of the present invention. It is a perspective view showing the connection structure of the fitting adapter and the removal member of one embodiment of the present invention. It is a perspective view showing the connection structure of the fitting adapter and the removal member of one embodiment of the present invention. It is sectional drawing of the metal plate of the lamp main body in a reference example.

An embodiment of the present invention will be described below with reference to the drawings. In the drawings, the same elements are designated by the same reference numerals.

FIG. 1 is a side view showing a state in which a lamp 100 according to an embodiment of the present invention is attached to a building material such as a ceiling material 300.
FIG. 2 is a plan view of the light emitting surface of the lamp 100.
FIG. 3 is a perspective view of an element located on the back side of the ceiling material 300 among the elements shown in FIG.
FIG. 4 is a perspective view of the back surface of the lamp 100.

The lamp 100 includes a lamp body 10, a translucent cover 30, and a fitting adapter 40. The lamp body 10 has a plate 11. The plate 11 is preferably a metal plate. As shown in FIG. 4, the metal plate 11 is formed in a rectangular plate shape, for example.

A fitting adapter 40 is provided on the back surface 11b of the metal plate 11. The fitting adapter 40 is fixed to the back surface of the metal plate 11 with screws, for example. The fitting adapter 40 is formed in a truncated cone shape, for example. A lamp-side connector 43 having, for example, a socket structure is fixed to the upper surface of the fitting adapter 40. A cushion material 13 is provided on the back surface 11b of the metal plate 11.

The lamp body 10 further includes a light source module 20.
FIG. 5 is a plan view of the light source module 20 on the light emitting surface side.
FIG. 6 is a schematic cross-sectional view of the light source module 20 and the translucent cover 30.

The light source module 20 is attached to the light source arrangement surface 11a opposite to the back surface 11b of the metal plate 11. The light source module 20 is screwed to the metal plate 11, for example. The metal plate 11 functions as a reinforcing plate and a heat dissipation plate of the light source module 20.

The light source module 20 has a substrate 21 and a plurality of light sources 22. The substrate 21 has a light source mounting surface 21a and a back surface 21b opposite to the light source mounting surface 21a. A plurality of light sources 22 are periodically arranged on the light source mounting surface 21 a of the substrate 21. In the example shown in FIG. 5, the plurality of light sources 22 are arranged in a grid at an equal pitch. The back surface 21b of the substrate 21 is in contact with the light source arrangement surface 11a of the metal plate 11.

The substrate 21 of the light source module 20 is, for example, a resin or ceramic insulating substrate, and a conductor pattern is formed on the light source mounting surface 21a thereof. The light source 22 includes a light emitting element 23 such as an LED (Light Emitting Diode), a phosphor layer 24, and a resin member 25. The light emitting element 23 is mounted on the light source mounting surface 21 a of the substrate 21, and the electrode of the light emitting element 23 is electrically connected to the conductor pattern formed on the substrate 21. The conductor pattern formed on the substrate 21 is electrically connected to the lamp-side connector 43 provided on the upper surface of the fitting adapter 40.

The phosphor layer 24 covers the light emitting element 23, and the resin member 25 covers the phosphor layer 24. A portion of the resin member 25 that covers the vicinity of the center of the upper surface of the light emitting element 23 is recessed. The resin member 25 having such a shape functions as a lens that gives the light source 22 a bat wing type light distribution characteristic.

FIG. 7 is a diagram showing an example of a bat wing type light distribution characteristic. The horizontal axis represents the emission angle of the light emitted from the light source 22, and the direction perpendicular to the light source arrangement surface on which the light source 22 is arranged is 0°. The vertical axis represents the intensity of light emitted from the light source 22.

The bat wing type light distribution characteristic has a first intensity peak larger than the intensity when the emission angle is 0° in the region where the emission angle is 0° to −90° and the emission angle is 0°. The light distribution characteristic has a second intensity peak that is larger than the intensity when the emission angle is 0° in the range of 90° to 90°.

Since the light source 22 has a bat wing type light distribution characteristic, even if the distance between the light source 22 and the translucent cover 30 is short due to the thinning of the lamp 100, a uniform light emitting surface with less uneven brightness can be obtained. Further, it is possible to make it difficult for a person who puts the light emitting surface of the lamp 100 into view to feel the light source 22 as a dot-like glare.

The translucent cover 30 has translucency with respect to the light emitted from the light source 22. The translucent cover 30 is formed in a milky white color having a light diffusing property in which titanium oxide or the like is dispersed in a resin material such as acrylic. The translucent cover 30 is supported by the lamp body 10 so as to cover the light source 22.

FIG. 8 is a perspective view showing a support structure of the translucent cover 30 with respect to the lamp body 10.

The translucent cover 30 is supported by the cover support member 14 with respect to the lamp body 10. The cover support member 14 is arranged on the back surface 11b of the metal plate 11. The cover support member 14 is fixed to the metal plate 11 with screws 17, for example. As shown in FIG. 4, the plurality of cover support members 14 are arranged along the long sides of the rectangular metal plate 11 so as to be separated from each other.

FIG. 9 is a cross-sectional view showing a support structure of the translucent cover 30 using the cover support member 14.

The tip portion 14 a of the cover support member 14 projects to the outside of the metal plate 11 from a region overlapping the metal plate 11. The tip portion 14 a of the cover support member 14 is located outside the outer edge portion of the lamp body 10 and does not overlap the upper surface and the lower surface (light emitting surface) of the lamp body 10.

The end 11c of the metal plate 11 is bent so as to overlap the back surface 11b. A through hole 11d is formed in the bent portion of the metal plate 11, and the tip end portion 14a of the cover support member 14 projects to the outside of the metal plate 11 through the through hole 11d.

The translucent cover 30 has a main surface portion 31, a side surface portion 32, and an upper end portion 33. The main surface portion 31 faces the light source 22 with a space 70 in between. The side surface portion 32 is provided continuously to the end portion of the main surface portion 31 and covers the side of the space 70. The side surface portion 32 is located outside the outer edge portion of the lamp body 10. The side surface portion 32 is continuous at the corner portion of the boundary between the sides of the lamp body 10.

The upper end portion 33 is provided continuously to the upper end of the side surface portion 32 and projects from the side surface portion 32 toward the lamp body 10. The upper end portion 33 does not overlap the upper surface and the lower surface of the lamp body 10. The upper end portion 33 is formed continuously along the side portion of the lamp body 10 at a position outside the outer edge portion of the lamp body 10. The upper end 33 of the translucent cover 30 is interrupted at the corner of the boundary between the sides of the lamp body 10. Alternatively, the upper end 33 of the translucent cover 30 may be continuous at the corner of the boundary between the sides of the lamp body 10.

A part of the upper end portion 33 that is continuous along the side portion of the lamp body 10 overlaps the tip end portion 14 a of the cover support member 14. For example, a part of the upper end portion 33 of the lamp body 10 is hooked on the tip end portion 14 a of the cover support member 14 so as to be placed on the upper surface of the tip end portion 14 a of the cover support member 14. In this way, the upper end portion 33 of the translucent cover 30 partially overlaps (hooks) the tip end portion 14 a of the cover support member 14, so that the translucent cover 30 is supported by the lamp body 10.

In the present embodiment, the translucent cover 30 is not fixed to the lamp body 10 with a fastening component, but only the upper end 33 of the translucent cover 30 is overlapped (hooked) with the tip 14a of the cover support member 14. Therefore, even if the translucent cover 30 expands and contracts due to temperature change, the translucent cover 30 can be easily attached to the lamp body 10. In addition, it is possible to prevent the translucent cover 30 from being damaged without applying excessive force to the mounting portion.

The upper end portion 33 of the translucent cover 30 overlaps with the tip end portion 14a of the cover supporting member 14 in the portion where the cover supporting member 14 is arranged, but in the most area where the cover supporting member 14 is not arranged, the lamp body 10 Nor does it overlap the cover support member 14.

A tip portion 14a of the cover support member 14 projects to the outside of the lamp body 10, and an upper end portion 33 of the translucent cover 30 overlaps with (hangs on) the tip portion 14a. Therefore, in most areas where the cover support member 14 is not arranged, as shown in FIG. 10, the upper end portion 33 of the translucent cover 30 does not overlap the lamp body 10 or the cover support member 14. FIG. 10 is a cross-sectional view showing a positional relationship between the light-transmitting cover 30 and the lamp body 10 in a portion where the cover supporting member 14 is not arranged.

The upper end portion 33 of the translucent cover 30 has a portion that overlaps (hooks) the cover support member 14 and a portion that does not overlap the cover support member 14, and the area of the portion that does not overlap the cover support member 14 is It is sufficiently larger than the area of the portion overlapping the member 14.

Therefore, most of the light that travels from the space 70 inside the translucent cover 30 toward the upper end 33 of the translucent cover 30 is not blocked by the lamp body 10 and the cover support member 14 and is emitted from the upper end 33 to the outside. And the indirect illumination effect of illuminating the ceiling surface and the space around the lamp 100 can be obtained. Further, it is possible to obtain a uniform light emission by minimizing the shadowed area near the side surface of the lamp 100.

Below the upper end portion 33 of the translucent cover 30, a lower end portion 34 that protrudes in a region overlapping the end portion of the light emitting surface of the lamp body 10 (the end portion of the substrate 21) is provided. Between the lower end portion 34 and the end portion of the substrate 21, a cushioning material 16 that blocks the inside and outside of the space 70 is provided. The cushioning material 16 is a member having elasticity (cushioning property), for example, and is in close contact with the upper surface of the protruding portion 34 of the translucent cover 30 and the lower surface of the substrate 21. The lower end portion 34 and the cushioning material 16 are continuous along the side portion of the rectangular substrate 21.

In consideration of the expansion and contraction of the translucent cover 30, the gap (so-called play) between the protrusion 34 and the substrate 21 in a state where the upper end 33 of the translucent cover 30 is caught by the cover support member 14. Are designed to be formed. The cushioning material 16 closes the gap and prevents insects and dust from entering the space 70.

In a lamp whose central portion in the surface direction of the lamp body 10 is attached to the ceiling via the fitting adapter 40, particularly when the planar size of the lamp body 10 becomes large, the end portion of the lamp body 10 easily hangs down due to its own weight. However, strength may be required at the end of the lamp body 10.

As a method of increasing the strength of the lamp body 10, a method of attaching a reinforcing member to the lamp body 10 or performing a bending process or a concavo-convex process on the metal plate 111 as shown in the reference example of FIG. 17 can be considered.

However, in the reference example shown in FIG. 17, the convex portion 111 a provided on the metal plate 111 is not in contact with the substrate 21 on which the light source 22 is arranged, and the heat dissipation property of transmitting the heat of the light source 22 to the metal plate 111 through the substrate 21 is deteriorated. To do. Further, the end portion 111b of the metal plate 111 is bent downward on the light emitting surface side, and prevents light from being emitted from the side surface portion 32 and the upper end portion 33 of the translucent cover 30.

In the present embodiment, as shown in FIGS. 9 and 10, the end portion 11c of the metal plate 11 is bent so as to overlap with the back surface 11b opposite to the light emitting surface so that the strength of the end portion of the lamp body 10 is increased. I am raising. For this reason, the heat radiation property due to the contact with the substrate 21 is secured without generating a part floating from the substrate 21, and the emission of light from the side surface portion 32 and the upper end portion 33 is not hindered. Further, it is possible to easily cope with the bending process of the end portion 11c of the metal plate 11 which is responsible for heat dissipation without adding a reinforcing member.

As shown in FIG. 4, in the rectangular metal plate 11, sufficient strength can be obtained by bending two long side ends 11c of the four sides. In the metal plate 11 having a square shape or a shape in which the difference between the lengths of the long side and the short side is small, the edges on all sides may be bent.

The lamp 100 of the embodiment is attached to the ceiling material 300 by the mounting bracket 60. FIG. 11 is a perspective view of the mounting bracket 60.

The mounting member 60 is formed in an annular shape and has an opening 64 inside thereof. A plurality of mounting springs 63 having a leaf spring structure are provided on the side surface of the mounting bracket 60. An annular flange 61 is provided on the lower surface of the mounting bracket 60. The outer diameter of the flange 61 is larger than the diameter of the circular mounting hole formed in the ceiling material 300. A receiving plate 62 is provided on the upper surface of the flange 61 along the edge of the opening 64.

The mounting bracket 60 is fitted into a mounting hole 300a formed in the ceiling material 300.

FIG. 12 is a bottom view of the mounting bracket 60 fitted in the mounting hole 300 a of the ceiling material 300. FIG. 12 shows the front side of the ceiling material 300 facing the illumination target space.

The mounting spring 63 is arranged between the side surface of the mounting bracket 60 and the inner wall of the mounting hole 300a in a deformed state from the natural state. The mounting member 60 is biased upward by the restoring force of the mounting spring 63, and the upper surface of the flange 61 on the outer edge side is pressed against the front surface of the ceiling member 300 (see FIG. 14), so that the mounting member 60 is released. The state of fitting in the mounting hole 300a is maintained.

Before fitting the mounting bracket 60 into the mounting hole 300a of the ceiling material 300, the power supply unit 50 shown in FIG. 3 is arranged on the back side of the ceiling material 300, if necessary. The power supply unit 50 is passed through the mounting hole 300a to the back side of the ceiling material 300, and is arranged at a position on the back side of the ceiling material 300 that does not overlap the mounting hole 300a.

Alternatively, when the power supply unit 50 already installed on the back side of the ceiling material 300 is used as it is, the work of installing the power supply unit 50 on the back side of the ceiling material 300 becomes unnecessary.

As shown in FIG. 3, the power supply unit 50 has terminal blocks 52 and 53 connectable to an external power supply (commercial power supply). An electric cable 51 is led out from the power supply unit 50. The terminals of the terminal blocks 52 and 53 are electrically connected to the circuit board of the power supply unit 50, and the electric cable 51 is electrically connected to the circuit board. A power supply side connector 51a is provided at an end of the electric cable 51.

In a state before the lamp body 10 is attached to the ceiling material 300, the electric cable 51 is passed through the mounting hole 300a of the ceiling material 300 and the opening 64 inside the mounting bracket 60 fitted into the mounting hole 300a, and the power supply The side connector 51a is located on the front side of the ceiling material 300.

An operator who performs the mounting operation of the lamp 100 brings the lamp 100 close to the ceiling material 300, holds the lamp 100 with one hand, and uses the other hand to connect the power supply side connector 51a of the electric cable 51 hanging from the mounting hole 300a. The power supply side connector 51a is connected to the lamp side connector 43 fixed to the upper surface of the fitting adapter 40 provided on the back surface of the lamp body 10 by gripping.

After connecting the power supply side connector 51a to the lamp side connector 43, the fitting adapter 40 is fitted into the opening 64 inside the fitting 60 fitted into the fitting hole 300a of the ceiling member 300.

FIG. 13 is a perspective view showing a fitting structure of the fitting 60 and the fitting adapter 40.
FIG. 14 is a cross-sectional perspective view showing a fitting structure of the fitting 60 and the fitting adapter 40.

The fitting adapter 40 has an upper case 41, a lower case 42, two slide members 45, and a spring 47 connecting the two slide members 45.

A claw portion 44 having an inclined surface is provided at the tip of each slide member 45. By the sliding movement of the two slide members 45 due to the expansion and contraction of the spring 47, the claw portion 44 is retracted inside the cases 41, 42 through an opening formed between the upper case 41 and the lower case 42, or the cases 41, 42. It is possible to project outside.

13 and 14 show a state in which the claw portion 44 projects to the outside of the cases 41 and 42 and rides on the upper surface of the receiving plate 62 of the mounting bracket 60. As shown in FIG. 14, a stopper 41a protruding downward from the upper case 41 is located in a recess 46 formed in the upper surface of the slide member 45, and the stopper 41a and the wall surface of the recess 46 abut each other, so that the two slides are slid. The movements of the members 45 in the directions away from each other are restricted.

Usually, the claw portion 44 projects to the outside of the cases 41 and 42. When the fitting adapter 40 is fitted inside the mounting bracket 60, the inclined surface of the claw portion 44 is brought into contact with the inner peripheral wall of the flange 61 and the inner peripheral wall of the receiving plate 62 of the mounting bracket 60. The two slide members 45 compress the spring 47 by the force that the claw portion 44 receives from the inner peripheral wall of the flange 61 and the inner peripheral wall of the receiving plate 62, and slidely move toward each other. The claw portion 44 is retracted inside the cases 41 and 42, and allows the fitting adapter 40 to be fitted inside the fitting 60.

Then, when the claw portion 44 moves to a position above the receiving plate 62, the force that the claw portion 44 receives from the inner peripheral wall of the receiving plate 62 is released, and the restoring force of the spring 47 separates the two slide members 45 from each other. Is biased in the direction. The claw portion 44 projects to the outside of the cases 41 and 42, and the lower surface of the claw portion 44 rides on the upper surface of the receiving plate 62. As a result, the fitting adapter 40 and the lamp body 10 fixed to the fitting adapter 40 are prevented from falling from the mounting bracket 60.

When the fitting adapter 40 is fitted to the mounting bracket 60, the cushion material 13 provided on the back surface 11b of the metal plate 11 shown in FIG. 4 comes into close contact with the front surface of the ceiling material 300. As shown in FIG. 1, the main surface portion 31 of the translucent cover 30 is parallel to the front side surface of the ceiling material 300 and is directed to the space below the ceiling material 300.

Alternatively, the lamp 100 of the embodiment can be attached to the wall material by a method similar to the method of attaching to the ceiling material 300. When the lamp 100 is attached to the wall material, the main surface portion 31 of the cover 30 is parallel to the wall surface and is directed to the lateral space of the wall material.

The plurality of light sources 22 in the light source module 20 are arranged over a region larger than the area of the mounting hole 300a of the ceiling material 300 and the area of the opening 64 of the mounting bracket 60, and the light source is also disposed in a region of the lamp body 10 overlapping the fitting adapter 40. 22 are arranged. Therefore, in the main surface portion 31 of the translucent cover 30, the central portion, which is a region overlapping the mounting hole 300a and the fitting adapter 40, can also be illuminated, and a light emitting surface can be obtained over a wide area.

Further, when the fitting adapter 40 is fitted to the mounting bracket 60, as shown in FIG. 3, the upper surface of the fitting adapter 40 and the connecting portion between the power source side connector 51 a and the lamp side connector 43 are the ceiling member 300. It is exposed in the space on the back side. The fitting adapter 40 has its upper surface exposed to the space on the back side of the ceiling material 300 and is fixed to the mounting bracket 60. The power supply unit 50 is arranged at a position not overlapping the fitting adapter 40 and does not cover the fitting adapter 40. Therefore, the heat generated in the light source module 20 can be radiated to the space on the back side of the ceiling material 300 through the fitting adapter 40.

Next, a method for removing the lamp 100 from the ceiling material 300 will be described.

As shown in FIG. 4, a removing member 12 is provided on the back surface 11b of the metal plate 11. One end 12c of the removing member 12 is exposed on the side surface of the lamp body 10, and an operator can grasp the one end 12c of the removing member 12 with a finger or a jig when the lamp body 10 is attached to the ceiling material 300. .. The other end of the removal member 12 is connected to the slide member 45 of the fitting adapter 40.

15 and 16 are perspective views showing a connection structure between the fitting adapter 40 and the removing member 12.
FIG. 15 shows a state in which the upper case 41 of the fitting adapter 40 is removed.
FIG. 16 is a perspective view of the connecting structure of the removing member 12 and the slide member 45 seen from the back side with the lower case 42 also removed in FIG.

The detaching member 12 and the slide member 45 are connected via two arm members 48. Each arm member 48 can rotate about a shaft 42a provided on the lower case 42 as a fulcrum.

A through hole 48a is formed at one end of each arm member 48, and a pin 12a provided at the other end of the detaching member 12 is engaged in the through hole 48a.

An elongated hole 12b is formed in the removing member 12, and a screw 15 is located in the elongated hole 12b. The screw 15 is attached to the metal plate 11. The worker can slide the removing member 12 along the longitudinal direction of the removing member 12 by pulling the one end 12c of the removing member 12 with a jig, for example. At this time, the sliding movement of the removing member 12 is guided by the contact between the inner wall of the elongated hole 12b and the screw 15.

When the one end portion 12c of the detaching member 12 pulls the detaching member 12 in a direction protruding from the lamp body 10, the pair of arm members 48 engaged with the pins 12a of the detaching member 12 rotate about the shaft portion 42a as a fulcrum. By the rotation of the arm member 48, the other end portion 48b of the arm member 48 shown in FIG. 16 pushes the protrusion 49 provided on the lower surface of the slide member 45. As a result, the two slide members 45 compress the spring 47 and slide in the directions toward each other.

By this sliding movement of the slide member 45, the state in which the claw portion 44 is riding on the receiving plate 62 of the mounting bracket 60 shown in FIG. 14 is released, the fitting adapter 40 is disengaged from the mounting bracket 60, and the lamp body 10 is fixed to the ceiling material. It can be removed from 300.

One end portion 12c of the removing member 12 shown in FIG. 4 is bent inside the lamp body 10, for example, and a jig can be hooked on the one end portion 12c. The position of the one end 12 c of the detachable member 12 is aligned with the notch formed in the upper end 33 of the translucent cover 30, and is exposed on the side surface of the lamp body 10.

The removal member 12 is a metal member, and the metal member is painted in a color that is the same as or close to the color (for example, milky white) of the translucent cover 30. The removal member 12 is painted white, for example. For this reason, especially at the time of non-lighting, the one end portion 12c of the removing member 12 is not conspicuous on the side surface of the lamp body 10, and the appearance quality is not deteriorated.

According to the embodiment described above, it is not necessary to make a square hole in the building material in accordance with the shape and size of the lamp body 10, and the ceiling material 300 is smaller in size than the lamp body 10, and the fitting adapter is used. It is only necessary to make one mounting hole 300a corresponding to the size of 40. Then, by fitting the fitting adapter 40 into the fitting 60 fitted into the fitting hole 300a, the lamp body 10 can be easily attached to the ceiling member 300.

The lamp-side connector 43 is not connected to one end of the cable and hanging around, but is fixed to the upper surface of the fitting adapter 40. On the other hand, the power supply side connector 51a is led out from the power supply unit 50 by the electric cable 51. Therefore, the power supply side connector 51a is positioned at the operator's hand on the front side of the ceiling material 300 through the mounting hole 300a of the ceiling material 300 and the opening 64 of the mounting bracket 60, and the operator grasps the power supply side connector 51a with one hand and It is possible to connect the power supply side connector 51a to the lamp side connector 43 while supporting the lamp 100 with one hand attached to the main surface portion 31 of the translucent cover 30. It is not necessary to grasp the lamp-side connector 43 itself by hand. Therefore, even if the planar size of the lamp body 10 is increased, one operator can easily electrically connect the power supply unit 50 and the lamp 100 and attach the lamp 100 to the ceiling material 300.

When the lamp 100 is removed from the ceiling material 300, one hand is attached to the light emitting surface 31 of the lamp 100 to support the lamp 100, and one end of the detachable member 12 described above is used with the other hand, for example, using a jig. By pulling, the engagement between the claw portion 44 of the fitting adapter 40 and the mounting bracket 60 is released, and the lamp 100 can be removed from the ceiling material 300. After that, while maintaining the state where the lamp 100 is supported by one hand, the other hand can be moved from the detaching member 12 to the power supply side connector 51a and the power supply side connector 51a can be pulled to be pulled out from the lamp side connector 43. That is, it is possible for one operator to easily remove the lamp 100 from the ceiling material 300 and release the electrical connection between the power supply unit 50 and the lamp 100.

According to such an embodiment, since the various types of lamp bodies 10 can be easily connected to the common power source unit 50 with one touch, it is possible to change to another type of lamp body 10 without trouble. It will be possible. When changing the lamp body 10, it is not necessary to remove the common power supply unit 50 from the ceiling material 300.

Further, the mounting member 60 is formed in an annular shape, and the upper part thereof is open without being closed. Therefore, after the power supply side connector 51a is connected to the lamp side connector 43, when the fitting adapter 40 is fitted into the mounting bracket 60, the electric cable 51 is not pinched or caught anywhere, and the mounting bracket is not caught. Since it can be retracted into the space above 60, the work of fitting the fitting adapter 40 into the fitting 60 is not hindered.

The embodiments of the present disclosure have been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Based on the above-described embodiments of the present disclosure, all forms that can be appropriately modified and implemented by those skilled in the art also belong to the scope of the present disclosure as long as they include the gist of the present disclosure. In addition, within the scope of the idea of the present disclosure, those skilled in the art can think of various changes and modifications, and it is understood that these changes and modifications also belong to the scope of the present disclosure. ..

DESCRIPTION OF SYMBOLS 10... Lamp main body, 11... Metal plate, 11a... Light source arrangement surface, 14... Cover support member, 16... Buffer material, 20... Light source module, 22... Light source, 23... Light emitting element, 30... Translucent cover, 40... Mating adapter, 50... Power supply unit, 60... Mounting bracket, 100... Lamp, 300... Ceiling material

Claims (5)

A plate having a light source arrangement surface and a back surface opposite to the light source arrangement surface; a plurality of light sources arranged on the light source arrangement surface of the plate; and a plurality of cover support members fixed to the plate. With the lamp body,
A fitting adapter provided on the back surface of the plate,
A translucent cover,
Equipped with
The tip end portion of the cover support member projects to the outside of the plate from an area overlapping the plate,
The translucent cover has a main surface portion that faces the light source across a space, a side surface portion that covers a side of the space, and a side portion of the lamp main body that protrudes from the side surface portion toward the lamp main body. And an upper end portion formed continuously along
A lamp in which the translucent cover is supported by the lamp main body by partially overlapping the upper end portion of the translucent cover with the tip end portion of the cover support member. The translucent cover has a lower end protruding in an area overlapping with an end of the light emitting surface of the lamp body,
The lamp according to claim 1, wherein a cushioning material is provided between the lower end portion and the end portion of the light emitting surface. The lamp according to claim 1 or 2, wherein an end of the plate is bent so as to overlap the back surface. The lamp according to claim 3, wherein the bent end portion of the plate has a through hole that allows the tip end portion of the cover support member to protrude to the outside of the plate. The lamp according to any one of claims 1 to 4, wherein the light source is also arranged in a region of the lamp body where the fitting adapter overlaps.

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