JP6041267B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture that is used by being embedded in a mounting hole provided on a ceiling surface or the like.

2. Description of the Related Art Conventionally, there has been known an embedded lighting fixture that is embedded in a mounting hole provided on a ceiling surface or the like and illuminates the lower part (for example, see Patent Document 1).
As shown in FIG. 5, the lighting fixture 100 described in Patent Document 1 is a so-called embedded lighting fixture, and has a mounting plate 101 at the center in the height direction. The mounting plate 101 is formed in a substantially cylindrical plate shape from a metal material having heat dissipation, such as aluminum.
A lamp main body 102 that houses a light source block (not shown) having LEDs is attached to the lower side of the mounting plate 101. The lamp body 102 has a substantially cylindrical shape, and a reflection plate (not shown) is accommodated therein. A plurality of fixed springs 103 are attached to the outer peripheral surface.

On the rear half (right side in FIG. 5) of the upper surface of the mounting plate 101, a fin-like heat radiation block 104 that releases heat generated by the LEDs of the lamp body 102 is provided.
A power supply block 105 for supplying lighting power to the LEDs is provided on the front side (left side in FIG. 5) half of the upper surface of the mounting plate 101. The power supply block 105 has a substantially rectangular box-shaped case 106. A connector block 107 for connecting to a commercial power source (not shown) and receiving power is attached to the front portion of the case 106.

JP 2011-228098 A (FIG. 1)

However, in the conventional lighting fixture 100 as described above, as shown in FIG. 6, when it is attached, it is inserted into the attachment hole 109 from the rear side (right side in FIG. 6) of the power supply block 105.
At this time, if the height H of the ceiling back 108 is low, the rear end P1 of the upper surface of the power supply block 105 hits the structural member 110 of the ceiling back 108, or the front end P2 of the upper surface of the power supply block 105 is the mounting hole 109. There was a problem that workability was bad due to hitting the periphery.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a lighting fixture that can be easily accommodated and attached to a low ceiling.

  The lighting fixture of the present invention has a fixture main body that contains a light source and is attached to the attached portion, a power supply portion that is attached to the upper side of the fixture main body, and a power supply case that contains the power supply portion, The power supply housing has a substantially rectangular parallelepiped shape as a whole, has an inclined surface at the boundary between the bottom surface and the side surface, and is attached so that the inclined surface is parallel to the circuit board of the light source. It is.

  In the lighting fixture of the present invention, a sandwich angle between a surface parallel to the slope of the power supply housing and an upper surface of the power supply housing is 15 degrees or less.

  In the present invention, the slope provided in the power supply housing is attached in parallel with the circuit board of the light source, and the power supply housing is attached so as to be inclined so that the other end in the longitudinal direction is located on the upper side. For this reason, when installing the lighting fixture, the power supply housing is prevented from coming into contact with the ceiling member or mounting hole by inserting it into the mounting hole from the other longitudinal end of the power supply housing. Thus, it is possible to provide a lighting apparatus having an effect that it can be easily attached.

(A) is the perspective view which looked at the lighting fixture of embodiment which concerns on this invention from upper direction, (B) is the perspective view which looked at the lighting fixture of embodiment from the downward direction The longitudinal cross-sectional view which cut | disconnected the lighting fixture of embodiment which concerns on this invention to the perpendicular direction Cross section of the power supply housing Sectional drawing which shows the state which inserts a lighting fixture into the attachment hole of a ceiling surface A perspective view of a conventional lighting fixture Sectional drawing explaining the problem in the conventional lighting fixture

Hereinafter, the lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
As shown to FIG. 1 (A) and FIG. 1 (B), the lighting fixture 10 of embodiment is the fixture main body 20 attached to the ceiling surface 11 which is a to-be-attached part, and the power supply part attached to the upper side of the fixture main body 20. As shown in FIG. 40.

As shown in FIG. 2, the instrument main body 20 has a cylindrical cylindrical portion 21 that is open up and down. Inside the cylindrical portion 21, a light source mounting base 22 is provided at the upper center.
A reflection plate 23 is provided from the outer peripheral portion of the light source mounting base 22 toward the lower end portion of the cylindrical portion 21. The reflecting plate 23 has a truncated cone shape, and the inner surface is a reflecting surface 231.
At the lower end portion of the tube portion 21, an annular frame-shaped flange portion 24 protruding outward in the horizontal direction is provided. A packing 25 is attached to the upper surface of the flange 24 over the entire circumference.

As shown in FIG. 1 (A) and FIG. 1 (B), a plurality of (here, for example, two) spring mounting portions 26 are provided on the outer peripheral surface 211 of the cylindrical portion 21 at predetermined intervals. An attachment spring 27 is attached to the spring attachment portion 26.
The attachment spring 27 is generally L-shaped from the attachment portion 271 and the support portion 272. The attachment spring 27 is attached to the instrument body 20 by inserting the attachment portion 271 into the spring attachment portion 26 of the tube portion 21.
The attachment spring 27 is always urged downward (see arrow A in FIG. 1A).

As shown in FIG. 2, an LED package (light source) 30 in which an LED chip 32 is mounted and sealed is attached to a mounting surface of an LED substrate (circuit board) 31 on the light source mounting base 22.
The LED package 30 is attached to the light source mounting base 22 so that the LED substrate 31 is substantially horizontal, and the light of the LED chip 32 is irradiated downward.
Here, the horizontal means a direction orthogonal to the central axis CL of the cylindrical portion 21.

The LED substrate 31 is mounted in surface contact with the lower surface of the support plate 221 of the light source mounting base 22. The support plate 221 has a truncated cone shape that narrows downward, and a space S <b> 2 is formed above the support plate 221.
Therefore, the heat generated by the LED package 30 is transmitted from the LED substrate 31 to the light source mounting base 22 via the support plate 221 and further transmitted to the fixture body 20 to be radiated.

As shown in FIG. 2, the power supply unit 40 includes a power supply housing 41. The power supply casing 41 includes a bottom plate 42 and a top plate 43 that are parallel to each other. The longitudinal end face has a front end plate 44 on the instrument body center side and an outer rear end plate 45. Accordingly, the power source casing 41 is formed in a substantially rectangular parallelepiped box shape as a whole.
As shown in FIGS. 2 and 3, inclined plates (slopes) 46 are provided at the corners of the power supply housing 41 where the front end plate 44 and the bottom plate 42 intersect. The inclined plate 46 is inclined so that the front end plate 44 side becomes higher. An inclined surface 47 may also be provided at the corner where the top plate 43 and the front end plate 44 intersect.

As shown in FIG. 3, the sandwiching angle θ <b> 1 between the surface 461 parallel to the inclined plate 46 of the power supply unit casing 41 and the top plate 43 is set to 15 degrees or less.
Here, since the top plate 43 and the bottom plate 42 are parallel, the sandwiching angle θ <b> 1 is the same as the sandwiching angle θ <b> 2 between the inclined plate 46 and the bottom plate 42.

As shown in FIG. 2, the rear end plate 45 of the power source housing 41 is provided with a connector portion 48 for connection to a commercial power source (not shown) wired on the ceiling 111.
Inside the connector 48 (on the left side in FIG. 2), a power supply circuit board 49 is provided in parallel with the top plate 43. Various electronic components 491 are attached to the lower surface of the power supply circuit board 49.
Note that a space S <b> 1 is provided between the front end plate 44 and the power supply circuit board 49. As a result, the volume of the power supply unit casing 41 increases, so that an increase in the temperature of the power supply unit 40 is suppressed. For example, in the conventional power supply unit, the temperature of the power supply unit circuit board was 86.9 ° C., but in the power supply unit 40 of the present embodiment, the temperature of the power supply unit circuit board 49 was suppressed to 85.5 ° C. .

The power supply unit 40 is attached to the instrument main body 20 with the inclined plate 46 disposed on the light source mounting base 22.
Therefore, since the inclined plate 46 is mounted horizontally with the LED substrate 31, the power source casing 41 is mounted so as to be inclined so that the rear end plate 45 side becomes higher at the inclination angle θ <b> 1.
Note that the space S <b> 1 is located directly above the LED substrate 31 in the power supply unit casing 41. For this reason, it can prevent that the electronic component 491 of the power supply part 40 is heated with the heat which the LED board 31 emits.

Next, the attachment operation | movement which attaches the lighting fixture 10 to the attachment hole 12 of the ceiling surface 11 is demonstrated.
As shown in FIG. 4, first, the rear end plate 45 side of the power supply unit 40 of the lighting fixture 10 is inserted into the mounting hole 12 (see arrow A in FIG. 4). At this time, the tip of the mounting spring 27 is moved upward (direction B in FIG. 1A) and inserted into the mounting hole 12. Thereafter, the mounting spring 27 is released to make it free.

Next, the rear end plate 45 side of the power supply unit 40 is rotated in a direction approaching the ceiling surface 11 (see arrow B in FIG. 4).
Thereby, the cylinder part 21 of the instrument main body 20 is inserted into the attachment hole 12, and the flange part 24 comes into contact with the ceiling surface 11 around the attachment hole 12. Since the attachment spring 27 is elastically deformed in this state, the lighting fixture 10 is fixed by holding the ceiling surface 11 between the flange 24 and the attachment spring 27.

The effect of the lighting fixture 10 is demonstrated.
As shown in FIG. 2, a power supply unit 40 having a power supply unit casing 41 having a substantially rectangular parallelepiped shape as a whole is attached to the upper side of the fixture body 20 that houses the LED package 30 and is attached to the ceiling surface 11.
In addition, the power supply case 41 having a substantially rectangular parallelepiped shape is provided with an inclined plate 46 at the boundary between the bottom plate 42 and the front end plate 44, and the inclined plate 46 is arranged to be parallel to the LED substrate 31 of the LED package 30. did.
Therefore, the power supply unit casing 41 is attached so as to be inclined so that the inclined plate 46 is attached in parallel to the instrument body 20 and the rear end plate 45 side is located on the upper side.
For this reason, when attaching the lighting fixture 10 to the low ceiling 101, the power supply housing 41 is inserted into the mounting hole 12 from the rear end plate 45 of the power supply housing 41 so that the power supply housing 41 is inserted into the ceiling 111. It is possible to prevent the contact with the member or the mounting hole 12 and to easily mount the member.

In addition, as shown in FIG. 3, in the lighting fixture 10, the sandwiching angle θ <b> 1 between the surface 461 parallel to the inclined plate 46 of the power supply unit casing 41 and the top plate 43 of the power supply unit casing 41 is 15 degrees or less. It set so that it might become.
Thereby, even when the height of the ceiling 111 is low, it can be easily attached.

The lighting fixture of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.
For example, in the above-described embodiment, the case of having one LED package as a light source is illustrated, but the present invention is not limited to this. That is, the luminaire of the present invention is also applicable when a plurality of LED packages are provided.

10 Lighting equipment 11 Ceiling surface (attached part)
20 Instrument body 30 LED package (light source)
31 LED board (circuit board)
40 Power Supply Unit 41 Power Supply Case 42 Bottom Plate (Bottom)
44 Front end plate (side)
46 Inclined plate
461 Parallel plane θ1 Nipping angle

Claims (2)

An instrument body that houses the light source and is attached to the mounted part;
A power supply unit attached to the upper side of the instrument body;
A power supply housing that houses the power supply,
The power supply housing is generally in the shape of a rectangular parallelepiped, and has a slope at the boundary between the bottom surface and the side surface,
The lighting fixture attached so that the said slope may become parallel with respect to the circuit board of the said light source. The lighting fixture according to claim 1,
The lighting fixture whose sandwiching angle between the surface parallel to the slope of the power supply housing and the upper surface of the power supply housing is 15 degrees or less.

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