JP2979927B2 - Ceiling-mounted lighting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire for a ceiling-mounted fluorescent lamp.

[0002]

2. Description of the Related Art In general, a luminaire for a fluorescent lamp embedded in a ceiling is fitted with a box-shaped luminaire main body having an open lower surface in an embedding hole opened in a ceiling surface of a building, and the luminaire main body is used as a slab of a building. It is designed to be fixed to mounting bolts hanging down from. A lighting circuit component such as a fluorescent lamp and a ballast for maintaining the lighting of the fluorescent lamp, or an electronic component forming an inverter circuit is accommodated in the interior of the appliance body.

[0003] Usually, the lighting circuit component is disposed directly on or close to the top plate of the appliance main body, and a fluorescent lamp is installed below this. A reflector is provided between the lighting circuit component and the fluorescent lamp to hide the lighting circuit component and to reflect light emitted from the lamp downward.

[0004]

However, in the prior art, since the lighting circuit parts such as the ballast are installed at the center position of the fixture main body, when the fixture main body is suspended by the mounting bolts, a balance is required for the suspension. The central part of the instrument main body cannot be used, and a plurality of mutually separated places on the top plate of the instrument body are connected to the mounting bolts. For this reason, a plurality of mounting bolts are required, and a plurality of mounting holes must be formed in the top plate portion of the instrument body. Since the instrument body is fixed at these multiple locations, the number of parts increases, and Since the device main body must be supported until the fastening of a plurality of connection points is completed, there is a problem that the operation is troublesome.

On the other hand, in this type of luminaire, the fluorescent lamp generates heat during lighting, and when a ballast is used as a lighting circuit component, the ballast itself also generates heat. However, in the case of the above-mentioned conventional ceiling-mounted luminaire, a lighting circuit component composed of a ballast or an electronic circuit component is mounted just above the fluorescent lamp housed in the luminaire main body.

For this reason, the heat generated from the lamp heats the ballast or the electronic circuit component disposed directly above the lamp, and the lighting circuit component is damaged early by heat and has a short life.

Conversely, heat released from the ballast may be transmitted to nearby lamps, in which case the bulb temperature of the lamp will increase, exceeding the optimal operating temperature at which mercury evaporates. As a result, there is a problem that the lamp efficiency is reduced.

Accordingly, it is an object of the present invention to make it easier to mount the appliance body, and to reduce the ratio of mutual influence of heat between the lamp and the lighting circuit component, thereby improving the life characteristics. It is an object of the present invention to provide a ceiling-mounted lighting device that can be used.

[0009]

According to a first aspect of the present invention, there is provided a lighting apparatus body which is fitted into an embedding hole opened in a ceiling surface of a mounting portion, has a top plate portion on an upper surface, and has a lower surface opened. A mounting hole formed in the top plate of the appliance body, through which an attachment bolt suspended from the attached portion penetrates and fixed to the attachment bolt; a fluorescent lamp housed in the appliance body; A lighting circuit component provided above the fluorescent lamp; and a reflector for partitioning the lighting circuit component and the fluorescent lamp, and reflecting light emitted from the lamp in the direction of the lower surface opening; A protrusion that protrudes to one side is formed at the top of the lamp, and it is offset from directly above the lamp.
Attach the lighting circuit parts to the protruding parts, and
Position of the center of gravity from the embedding hole
Direction, and fill the mounting holes
The protrusion and the weight are bordered by the protrusion side edge of the insertion hole.
If the heart located on the opposite side is formed in the top plate, was inserting the instrument body in the embedding hole from the protruding portion, the
The device body is rotated in the direction of the protruding portion with the side edge of the protruding portion serving as a fulcrum, and is attached to the embedding hole.

According to a second aspect of the present invention, the mounting hole formed in the top plate of the instrument body has a shape in which the small opening and the large opening communicate with each other. The small opening is formed so as to face in the direction of the protruding portion and in the opposite direction.

[0011]

According to the first aspect of the present invention, one side of the instrument body is stretched.
Lighting circuit such as ballast on the protruding part formed
The center of gravity of the appliance body containing the lighting circuit components containing the components
From the embedding hole opened in the ceiling surface.
The instrument body from its protruding part.
When inserted into the ceiling mounting hole,
Of the rotational moment caused by the bias toward the protrusion
With the action, the instrument body is supported with the protrusion side edge of the embedding hole as a fulcrum.
Can be automatically rotated in the direction of the protruding portion, so that the instrument body can be easily inserted into the embedding hole and can be easily engaged with the mounting bolt. Also, on the top plate of the instrument body
The mounting holes that are formed and through which the mounting bolts pass
It is located on the side opposite to the protrusion and the center of gravity
Screw, tighten the nut that is screwed into this bolt.
By using the point suspended from this nut as a fulcrum,
The body is fulcrum on the side edge of the protrusion according to the position of the center of gravity
To rotate in the same direction as the above rotation. That
Therefore, the mounting posture of the instrument body can be stabilized.

Further, since the lighting circuit component is provided at a position eccentric from directly above the fluorescent lamp, the lighting circuit component and the fluorescent lamp are separated from each other in position, and the mutual thermal influence is reduced.

According to the second aspect of the present invention, the large opening of the mounting hole is directed toward the above-mentioned protruding portion which is on the side of the pivot of the device main body, and the small opening is formed in the opposite direction. When the main body is inserted into the embedding hole and turned, the mounting bolt is automatically inserted from the large opening toward the small opening, and the mounting bolt can be easily penetrated. In this state, the mounting hole is locked to the mounting bolt, so that the device main body can be temporarily fixed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on one embodiment shown in the drawings. This embodiment shows an example in which the present invention is applied to a ceiling-mounted luminaire in which two single-base fluorescent lamps are mounted. In the figure, reference numeral 1 denotes a luminaire main body.

Reference numeral 40 denotes a ceiling surface of a building to which the lighting equipment is mounted. An embedding hole 41 into which the lighting fixture is embedded is formed in the ceiling surface 40, and the embedding hole 41 has a rectangular shape. A mounting bolt 45 is disposed at a position substantially at the center of the embedding hole 41 at a position deeper than the ceiling surface 40 of the embedding hole 41. The mounting bolt 45 is hung from a slab of a building or the like, and the lighting fixture body 1 is mounted on the mounting bolt 45.

The lower part of the apparatus main body 1 has the ceiling surface 40.
Is formed in a square cylindrical shape having a size corresponding to the embedding hole 41, and the lower surface of the cylindrical portion has a square opening 2. Around the opening 2, a flange 3 is formed which is in contact with the lower surface of the ceiling surface 40.

The upper surface of the instrument body 1 is closed, and the top plate portion has one edge of the embedding hole 41 as shown in FIG.
On the opposite side to the protrusion 7 and the center of gravity G described later
At the same time, a mounting hole 4 is formed facing the center of the opening 2. The mounting hole 4 has, for example, a gourd shape in which a large opening 4a and a small opening 4b are formed so as to communicate with each other. This mounting hole 4 has mounting bolts 45 suspended from the ceiling slab.
When the mounting bolt 45 is inserted through the small opening 4b, the washer 46 and the nut 47 attached to the mounting bolt 45 lock the instrument body 1 to the mounting bolt 45. It is made to let.

Reference numeral 5 denotes a stopper which protrudes downward from the top plate of the instrument body 1 and prevents the washer 46 from slipping. In other words, when the appliance main body 1 and the mounting bolt 45 relatively move and the mounting bolt 45 tries to escape from the small opening 4b into the large opening 4a, the washer 46 is hooked on the stoppers 5 and the mounting bolt 45 Large opening 4a
Prevent movement to.

At one side of the instrument body 1, an inclined portion 6 is formed from the top plate to one side plate, and the inclined portion 6 is open. A protruding portion 7 is formed on one side of the side opposite to the inclined portion 6 so as to protrude laterally with a predetermined length from one side of the embedding hole 41 formed in the ceiling surface 40. . That is, the protruding portion 7 is largely displaced from the center point of the opening 2 and protrudes toward the other side of the instrument body 1.

The projection 7 accommodates a lighting circuit component, for example, a choke coil stabilizer 15. Ballast 15
Are arranged obliquely in plan view as shown in FIG.
Thus, the amount of protrusion of the protruding portion 7 is reduced. The ballast 15 is fixed to the instrument body 1. The projection 7 also houses a lighting tube (not shown).

The large opening 4a of the mounting hole 4
Are formed in the direction of the protruding portion 7, and conversely, the small opening 4b is formed in the direction of the inclined portion 6.

A step 8 is formed at the base end of the protrusion 7. The step 8 also protrudes laterally from one edge of the embedding hole 41. Sockets 16 and 16 are attached to the step portion 8. Socket 16, 16
Is rotatably mounted on a socket mount 18 via a hinge 17. U-shaped fluorescent lamps 10, 10 each having a single base are detachably attached to such sockets 16, 16. The fluorescent lamp 10
Electrodes (not shown) are sealed at both ends of the U-shaped glass bulb 11, and a known base (not shown) is attached across the both ends. The base is detachable from the socket 16. It is designed to be attached to. In this case, the fluorescent lamp 10 is inserted from the opening 2 of the fixture main body 1 and is attached to the socket 16, but when the lamp 10 is inserted, the socket 16 is hinged as shown by the imaginary line in FIG. The lamp 10 is inserted obliquely downward with respect to the center of rotation, and the lamp 10 is inserted into the appliance body 1 with the base obliquely upward, and the base is connected to the socket 16 in this oblique state. In this state, the lamp 10 is pushed up to rotate the socket 16 about the hinge 17 so that the lamp 10 is in a horizontal posture. This lamp 1
The horizontal position 0 is maintained by the lamp holder 21 attached to the reflector 20. That is, lamp holders 21 composed of leaf spring pieces are attached to the top plate portion of the reflector 20, and the lamps 10, 10 are held in a horizontal posture by elastically holding the bulb wall by the lamp holders 21. The reflector 20 is held so as to be attached to a predetermined position of the reflector 20.

The reflector 20 has a rectangular box shape whose upper surface is closed and whose lower surface is opened, and is slightly smaller than the lower end opening 2 of the instrument body 1. The reflector 20 has one side wall facing the sockets 16 and 16 opened. This reflector 20 separates the lamps 10 and 10 from the ballast 15 to hide the ballast 15,
It has a reflecting surface that reflects light emitted from the lamps 10 and 10 downward. The reflector 20 is inserted into the instrument body 1 through the lower end opening 2 of the instrument body 1 and the instrument body 1
Are fixed via a reflector mounting fixture 22 and a fixing screw 23. That is, a reflector mounting member 22 is fixed to the top plate portion of the instrument body 1 by means such as spot welding or the like, and a screw insertion hole is provided for the reflector mounting member 22 in the top plate portion of the reflector 20. 24 are formed. Therefore, the reflector 20 is inserted into the screw insertion hole 24 from the inside of the reflector 20, and the fixing screw 23 is screwed into the reflector mounting fixture 22 so that the reflector 20 is attached to the appliance body 1. It is fixed.

Further, a light control body 30 is mounted below the lamps 10, 10. The light control body 30 has a rectangular frame portion 3 slightly smaller than the lower end opening 2 of the appliance body 1.
1 and auxiliary louver pieces 32, 32 provided on the frame portion 31 and intersecting in a cross shape, and light-controls the light emitted from the lamps 10, 10 and the light reflected by the reflector 20 in a balanced manner, And it plays the role of accessories. A pair of V-shaped springs 33, 33 are attached to the frame portion 31 of the light control body 30 by fixtures 34, 34.
The character springs 33, 33 are adapted to be engaged with light control body mounting pieces 25, 25 cut and raised on the side wall of the appliance body 1. That is, since the V-shaped springs 33, 33 are elastically deformed so that both end portions are widened, the light control body mounting pieces 25,
25, the V-shaped spring 33 holds the light control body 30 at a predetermined position with a force to expand.

The frame portion 31 of the light control body 30 has a cover portion 35 for covering the flange portion 3 of the instrument body 1 from below.
Are formed.

The operation of the embodiment having such a configuration will be described. The lighting fixture configured as described above is mounted on the ceiling surface 40.
When mounting in the embedding hole 41 formed in the device body, first, the mounting is performed from the instrument body 1. The projecting portion 7 is provided on the instrument body 1.
Since the ballast 15 is incorporated in the main body 1 and components such as a lighting tube (not shown) are also mounted,
As shown in FIG. 5, the position G of the center of gravity is unevenly distributed in the direction of the protrusion 7 with respect to a line passing through the center of the opening 2 . Yo
Therefore, when one edge of the opening 2 on the side of the protruding portion 7 is defined as a rotation fulcrum O, the instrument body 1 is turned clockwise in FIG.
To generate moving urging force (rotational moment)
The center of gravity position G is shifted from the embedding hole 41 and
It is provided shifted in the protruding direction.

As shown in FIG. 5, the device main body 1 is inserted into the embedding hole 41 from the lower surface of the ceiling surface 40 through the protruding portion 7. Then, when one edge of the opening 2 on the side of the protruding portion 7 hits one edge of the opening of the embedding hole 41, the contact portion is rotated clockwise as a rotation fulcrum O.
In this rotation, since the center of gravity G is located on the right side in FIG. 5 with respect to the rotation center O, only the rotation fulcrum O is supported, and when the hand is released from another point, the rotation automatically rotates clockwise. I do. In this case, since the side wall on the side opposite to the protruding portion 7 is formed as the inclined portion 6, it does not become an obstacle when the instrument body 1 is rotated clockwise about the rotation fulcrum O. Will be encouraged.

The mounting bolt 45 is automatically guided to the mounting hole 4 formed in the top plate of the instrument body 1 by such a rotation. That is, since the mounting hole 4 formed in the top plate portion has a large opening 4a that forms a large opening toward the protruding portion 7 side, the top plate portion is pivotally moved to attach the mounting bolt 45. When approaching, FIG. 5 (A)
And (B), the washer 4 from the large opening 4a.
6 and the nut 47 are allowed to pass, and the mounting bolt 45 is made to penetrate. Then, when the top plate is horizontal, FIG.
As shown in (5), the mounting bolt 45 is introduced into the small opening 4b. Therefore, the mounting bolt 4 is rotated by the rotation of the instrument body 1.
5 automatically penetrates the mounting hole 4.

When the hand is released from the instrument main body 1 in this state, the step portion 8 hits the back surface of the ceiling surface 40 and the center of gravity G is on the right side of the contact portion, so that the instrument main body 1 further moves clockwise. Try to rotate. However, in this case, since the washer 46 of the mounting bolt 45 is hooked on the small opening 4b of the mounting hole 4, the instrument body 1 is prevented from rotating clockwise, and the ceiling surface 40 and the mounting bolt 45 are hooked. , Are supported at a total of two places, fall is prevented, and a so-called temporary fixing state is established.

When the nut 47 is tightened in this state, the instrument body 1 is pushed up along the mounting bolt 45. When the flange 3 formed at the lower end comes into contact with the lower surface of the ceiling surface 40, the tightening of the nut 47 is stopped. As a result, the instrument body 1 is mechanically supported by the single mounting bolt 45. In this case, even though the center of gravity G is eccentric due to the load of the stabilizer 15 because the flange portion 3 is in contact with the lower surface of the ceiling surface 40, even if the instrument body 1 is hung by one mounting bolt 45, The instrument body 1 does not tilt. Moreover, mounting bolts formed on the top plate of the instrument body 1
The mounting hole 4 through which the opening 45 contacts the opening 2 of the instrument body 1
One edge of the embedding hole 41 on the protruding portion side, that is, the pivot O
Opposite to the projecting portion 7 of the instrument body 1 and the center of gravity position G
Is screwed into this bolt 45
Hanging on the nut 47 by tightening the nut 47
The instrument body 1 is positioned at its center of gravity G with the
Therefore, the above-described rotation of the instrument body 1 with the rotation fulcrum O as a fulcrum.
And try to rotate in the same direction. Therefore, the instrument body 1
The mounting posture can be further stabilized.

In this manner, the device main body 1 is inserted into the embedding hole 41.
Then, the reflector 20 is fitted through the lower end opening 2 of the instrument body 1, and the reflector 20 is fixed to the instrument body 1. In this case, the reflector 20 is inserted into the screw insertion hole 24 from the inside of the reflector 20, and the fixing screw 23 is screwed into the reflector fixture 22, so that the reflector 20 is attached to the fixture body 1. Will be fixed to.

Next, the lamp 10 is attached. Lamp 1
When attaching 0, the socket 16 is tilted obliquely downward about the hinge 17 as shown by the imaginary line in FIG. 1, and the lamp 10 is inserted into the appliance main body 1 with its base obliquely upward. . Then, the base is connected to the socket 16 in this oblique state, and then the lamp 10 is pushed up to rotate the socket 16 about the hinge 17 so that the lamp 10 is in a horizontal posture. The lamp 10 is clamped by a lamp holder 21 attached to a reflector 20, so that a horizontal posture is maintained.

A light control body 30 is mounted below such lamps 10, 10. That is, the V attached to the light control body 30
The springs 33, 33 are attached to the light control body mounting piece 25 of the appliance body 1,
When the light control body 30 is engaged with the light control body 30 and pushed up, the V-shaped springs 33, 33 are expanded and locked to the light control body mounting pieces 25, 25. For this reason, the light control body 30 can be held at a predetermined position in the instrument body 1. In this case, the cover 35 of the light control body 30 covers and covers the flange 3 of the instrument body 1 from below. When the lighting device is to be removed from the ceiling surface 40, the operation reverse to the above may be performed.

According to the embedding type luminaire of this embodiment, when the luminaire main body 1 is mounted in the embedment hole 41, the luminaire main body 1 is inserted into the embedment hole 41 from the projecting portion 6 accommodating the stabilizer 15, and the luminaire main body 1 is inserted. Since the instrument main body 1 can be temporarily fixed to the embedding hole 41 and the mounting bolt 45 only by turning clockwise, the mounting operation of the instrument main body 1 is simplified.

Further, in this case, since the ballast 15 is displaced, a clockwise turning force is generated in the instrument main body 1, so that the turning operation is easy. Further, since the side surface of the instrument body 1 is the inclined surface 6, it does not hinder the insertion of the protruding portion 7 and the rotation of the instrument body 1.

Further, since the mounting bolt 45 is automatically guided to the mounting hole 4 formed in the top plate of the tool main body 1 by the rotation of the tool main body 1, the work for inserting the mounting bolt 45 is specially performed. Does not require any trouble. Mounting bolt 45
Is inserted into the mounting hole 4, the instrument body 1 is turned.
Since it is about to rotate clockwise around the fulcrum O, the instrument body 1 does not fall out of the embedding hole 41 even if the hand is released. Therefore, after the rotation of the instrument body 1, the instrument body 1 can be fixed to the mounting bolt 45 only by tightening the nut 47, and can be simultaneously attached to the embedding hole 41.

In this case, since only one mounting bolt 45 is required, the number of bolts, the number of mounting holes 4 and the work of tightening the nut 47 can be reduced.

Further, since the ballast 15 is accommodated in the protruding portion 7 deviated from the center line of the opening 2, the ballast 15 is located at a position deviated from right above the lamps 10, 10, and the lamps 10, 10 Even if 10 generates heat, it becomes difficult for this heat to be transmitted to the ballast 15. Since the ballast 15 self-heats during lamp operation, the temperature naturally tends to rise, but as described above, it is difficult to receive heat from the lamps 10 and 10 to prevent an excessive temperature rise. Therefore, heat damage to the ballast 15 can be prevented. In addition, since the ballast 15 is located at a position deviated from directly above the lamps 10 and 10, it is possible to reduce the transmission of heat of the ballast 15 to the lamps 10 and 10.

Moreover, since the inclined surface 6 of the appliance main body 1 is open, the heat in the protruding portion 7 is released to the outside through the opening 6 and the excessive rise of the temperature of the ballast 15 is prevented. can do.

In the above embodiment, the case where the lighting circuit component is a choke coil type ballast has been described. However, the present invention is not limited to this, and electronic circuit components such as an inverter circuit are wired as lighting circuit components. Even if it is configured by mounting on a substrate, it can be carried out in the same manner as in the above embodiment. Particularly, since the electronic circuit components are required to have heat resistance measures, the above configuration is effective.

The number of the mounting bolts 45 is not limited to one, and a plurality of mounting bolts 45 may be used. Even when only one mounting bolt 45 is used, the mounting hole 4 is formed on the center line of the opening 2. You don't have to. That is, the mounting hole 4 is instrumental
If it is formed on the left side of the center of gravity G in FIG.

The fluorescent lamp 10 is not limited to a U-shaped lamp, but may be a straight tube fluorescent lamp, a ring-shaped fluorescent lamp or the like.

[0043]

As described above, according to the first aspect of the present invention, the lighting circuit component is housed in the projection formed so as to protrude from one side of the appliance body, and the center of gravity of the appliance body is buried in the ceiling.
Since it was displaced from the insertion hole and shifted in the direction of the protrusion, the instrument body
To the ceiling by inserting the
In this case, the side edge of the protruding part of the embedding hole is used as the pivot point.
The rotational force acts naturally by the position of the center of gravity,
It becomes easy to insert the main body into the embedding hole, and the rotation fulcrum
Mounting hole for the instrument body provided on the side opposite to the center of gravity
This makes it easier to engage the mounting bolts behind the ceiling. Accordingly
Thus, the instrument body can be easily and stably attached to the embedding hole . In addition, since the lighting circuit component is provided at a position eccentric from directly above the fluorescent lamp, the lighting circuit component and the fluorescent lamp are separated from each other, and the thermal influence is reduced. Therefore, the life characteristics of the lighting circuit components and the lamp are improved.

According to the second aspect of the present invention, the large opening of the mounting hole is formed in the direction of the protrusion having the pivot point of the instrument body, and the small opening is formed in the opposite direction. When the instrument body is inserted into the embedding hole and rotated, the mounting bolt is automatically inserted from the large opening toward the small opening, and the mounting bolt can be easily penetrated. Moreover, in this state, the mounting holes are locked to the mounting bolts, so that the instrument main body can be temporarily fixed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, in a state where a lighting fixture is attached to an embedding hole.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a perspective view showing the whole of the embodiment.

FIG. 4 is an exploded perspective view of the apparatus main body, the reflector, and the light control body of the embodiment.

FIG. 5 is an explanatory diagram when the device main body is mounted in the embedding hole.

FIGS. 6A to 6C are perspective views sequentially showing a state in which a mounting bolt is inserted into a mounting hole of the instrument main body.

[Explanation of symbols]

1 ... lighting equipment body 2 ... lower end opening 3
... Flange part 4 ... Mounting hole 4a ... Large opening 4
b: small opening 6: inclined part 7: protruding part 8
... Step 10 ... U-shaped fluorescent lamp 15 ... Ballast 16 ... Socket 20 ... Reflector 30 ... Light control body 40 ... Ceiling surface 41 ... Embedded hole 45 ... Mounting bolt 56 ... Washer 5
7 ... nut

Claims (2)

(57) [Claims] 1. A lighting fixture body which is fitted into an embedding hole opened in a ceiling surface of an attached part, has a top plate on an upper surface, and has a lower surface opened, and is formed on a top plate portion of the fixture body. A mounting hole penetrated by the mounting bolt hanging from the mounted portion and fixed to the mounting bolt; a fluorescent lamp housed in the appliance body; and a lighting circuit provided above the fluorescent lamp. And a reflector that separates the lighting circuit component and the fluorescent lamp, and that reflects light emitted from the lamp in the direction of the lower surface opening, and that protrudes to one side from an upper portion of the appliance body. Is formed, and the lighting circuit is deflected from directly above the lamp.
Attach the road components and embed the center of gravity
Deviated from the hole and provided in the direction of the protrusion
At the same time, the mounting hole is bordered by the protrusion side edge of the embedding hole.
The top plate is located on the opposite side of the protrusion and the center of gravity.
When the device main body is inserted into the embedding hole from the protruding portion, the device main body rotates in the direction of the protruding portion with the side edge of the protruding portion as a fulcrum, and is attached to the embedding hole. A ceiling-mounted lighting device, characterized in that: 2. A mounting hole formed in a top plate portion of the appliance main body has a shape in which a small opening and a large opening communicate with each other. The ceiling-mounted lighting device according to claim 1, wherein the opening is formed in the opposite direction.