JP2021127660A - Ceiling electrical device and installation method thereof - Google Patents

Abstract

To provide a ceiling electrical device capable of maintaining installation ability of ceiling electrical devices on a backside of a ceiling board while enhancing design property of an interior space that includes the ceiling board.SOLUTION: A ceiling electrical device 10 includes: a housing 12 that has an inclined part 12s in which a height dimension decreases toward a tip on one side in a longitudinal direction; and an electrical equipment unit 14 that is provided in a center in the longitudinal direction inside the housing 12. The housing 12 is provided with a first electric component or first electric component groups 20, 22 therein, and in the housing 12, a second electric component or second electric component groups 26, 28 with a height dimension thereof is smaller than a height dimension of the first electric component or the first electric component groups 20, 22. The first electric component or the first electric component groups 20, 22 are arranged on the inclined portion 12s of the housing 12 in an inclined state with respect to an axial center 14 c of the electrical equipment unit 14.SELECTED DRAWING: Figure 3

Description

The present invention relates to ceiling electrical devices such as ceiling speakers and ceiling lighting devices, and installation methods thereof.

A ceiling speaker is used in the indoor speaker system, and the ceiling speaker is installed on the back surface of the ceiling plate through a circular ceiling hole formed in the ceiling plate (see Patent Document 1). Then, the configuration of the ceiling speaker and the like according to the prior art will be briefly described as follows.

The ceiling speaker includes a housing installed on the back surface of the ceiling plate, and the housing extends in the longitudinal direction of the ceiling speaker. A speaker unit as an electric device unit is provided in the central portion in the longitudinal direction in the housing. In other words, a unit accommodating portion for accommodating the speaker unit is formed in the central portion in the longitudinal direction of the housing.

An attenuator transformer as a first electric component connected to the speaker unit is provided on one side (tip side) in the longitudinal direction in the housing. Further, on the other side (tail end side) in the longitudinal direction in the housing, a transformer transformer as another first electric component connected to the speaker unit is provided. The height dimension of the attenuator transformer and the transformer transformer is the second largest after the height dimension of the speaker unit. Further, an attenuator transformer switch and a transformer transformer switch as a second electric component connected to the speaker unit are provided in the housing. A terminal block as another second electric component connected to the speaker unit is provided at the tip of the housing. The height dimension of the attenuator transformer switch, the height dimension of the transformer transformer switch, and the height dimension of the terminal block are each smaller than the height dimension of the first electric component.

In the installation work of the ceiling speaker, the ceiling speaker is tilted with respect to the ceiling plate so as to raise the tip side of the ceiling speaker, and then the ceiling speaker is inserted into the ceiling hole from the tip side of the ceiling speaker. After that, the ceiling speaker is laid down on the back side of the ceiling plate, and the speaker unit is aligned with the ceiling hole. Then, a circular decorative panel is attached to the surface of the ceiling plate so as to cover the ceiling hole, and the ceiling speaker is installed on the back surface of the ceiling plate.

Japanese Unexamined Patent Publication No. 2017-220873

In recent years, in order to enhance the design of the interior space including the ceiling board, there is an increasing demand for miniaturization of the decorative panel, and along with this, the ceiling hole and the speaker unit tend to have a smaller diameter. Further, in order to insert the ceiling speaker into the ceiling hole, it is necessary to make the dimension in the lateral direction, which is one direction of the ceiling speaker, smaller than the hole diameter of the ceiling hole. In order to mount a plurality of electric components or the like on the ceiling speaker, it is necessary to increase the dimension in the longitudinal direction, which is the other direction orthogonal to one direction of the ceiling speaker. As a result, when the diameter of the ceiling hole is reduced, the insertion height (vertical dimension) on the back surface side of the ceiling plate required for inserting the ceiling speaker into the ceiling hole is increased. Therefore, if the space on the back side of the ceiling plate is narrow or if an obstacle such as an air conditioning duct exists on the back side of the ceiling plate, it becomes difficult to install the ceiling speaker on the back side of the ceiling plate. That is, there is a problem that it is difficult to maintain the installability of the ceiling speaker on the back surface of the ceiling plate while enhancing the design of the indoor space including the ceiling plate.

The above-mentioned problems occur not only in ceiling speakers but also in other ceiling electrical devices such as ceiling lighting fixtures.

Therefore, an object of the present invention is to provide a ceiling electrical device capable of suppressing an increase in the insertion height on the back surface side of the ceiling plate required for insertion into the ceiling hole, and an installation method thereof.

The first embodiment is a ceiling electric device installed on the back surface of the ceiling plate through a ceiling hole formed in the ceiling plate, and has an inclination in which the height dimension decreases toward the tip on one side in the longitudinal direction. A housing having a portion, an electric device unit provided in the central portion in the longitudinal direction in the housing, and a first electric component or a first electric component group provided in the housing and connected to the electric device unit. A second electric component or a second electric component group provided in the housing, connected to the electric device unit, and having a height dimension smaller than the height dimension of the first electric component or the first electric component group. And. Then, the first electric component or the first electric component group is arranged in the inclined portion of the housing in a state of being inclined with respect to the axial center of the electric device unit.

The ceiling electrical device according to the second embodiment includes the configuration of the ceiling electrical device according to the first embodiment. Then, the second electric component or the second electric component group is formed from the electric device unit in the housing so that a step portion recessed downward is formed on the other side of the housing in the length direction. Is also arranged on the other side in the length direction.

The third embodiment is a side in which the inclined portion of the housing is provided in the ceiling hole formed in the ceiling plate in a state where the ceiling electric device according to the first embodiment is inclined with respect to the ceiling plate. Insert from. After that, the ceiling electric device is laid down on the back surface side of the ceiling plate, the electric device unit is aligned with the ceiling hole, and the ceiling electric device is installed on the back surface of the ceiling plate.

The method for installing the ceiling electric device according to the fourth embodiment uses the ceiling electric device according to the second embodiment, and causes interference between the ceiling electric device and an obstacle on the back side of the ceiling plate by the inclined portion of the housing. While avoiding the interference between the ceiling electric device and the front peripheral edge of the ceiling hole formed in the ceiling plate by the step portion of the housing, the ceiling electric device is tilted with respect to the ceiling plate. In this state, the ceiling electric device is inserted into the ceiling hole formed in the ceiling plate from the tip end side. After that, the ceiling electric device is laid down on the back surface side of the ceiling plate, the electric device unit is aligned with the ceiling hole, and the decorative panel is attached to the surface of the ceiling plate so as to cover the ceiling hole. , The ceiling electric device is installed on the back surface of the ceiling plate.

According to the present invention, it is possible to maintain the installability of the ceiling electric device on the back surface of the ceiling plate while enhancing the design of the indoor space including the ceiling plate.

FIG. 1 is a side view of the ceiling speaker according to the present embodiment. FIG. 2 is a plan view of the ceiling speaker according to the present embodiment. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a bottom view of the ceiling speaker according to the present embodiment. FIG. 5 is a perspective view of the ceiling speaker according to the present embodiment as viewed from above on the tip end side. FIG. 6 is a perspective view seen from above on the tail end side of the ceiling speaker according to the present embodiment. FIG. 7 is a perspective view of the ceiling speaker according to the present embodiment as viewed from below. FIG. 8A is a schematic view illustrating a method of installing a ceiling speaker according to the present embodiment. FIG. 8B is a schematic view illustrating a method of installing a ceiling speaker according to the present embodiment. FIG. 8C is a schematic view illustrating a method of installing the ceiling speaker according to the present embodiment, and is a perspective view seen from the side of the ceiling speaker in the state shown in FIG. 8B. FIG. 8D is a schematic view illustrating a method of installing the ceiling speaker according to the present embodiment, and is a perspective view seen from above on the tip side of the ceiling speaker in the state shown in FIG. 8B. FIG. 8E is a schematic view illustrating a method of installing the ceiling speaker according to the present embodiment.

This embodiment will be described with reference to FIGS. 1 to 8E. In the claims and the specification, the "longitudinal direction" means the longitudinal direction of the ceiling electric device such as a ceiling speaker, and the "short direction" means the short direction of the ceiling electric device. To say. "Height dimension" means a dimension in a direction orthogonal to the longitudinal direction and the lateral direction. In the drawing, "L" is the longitudinal direction, "La" is the tip side (tip direction), "Lb" is the tail end side (tail end direction), "W" is the short direction, and "U" is the upward direction. , "D" points downward, respectively.

As shown in FIGS. 1 to 4 and 8E, the ceiling speaker 10 according to the present embodiment is one of the ceiling electrical appliances, and is a ceiling plate through a circular ceiling hole Th formed in the ceiling plate T. It is installed on the back surface Tb of T. The specific configuration of the ceiling speaker 10 is as follows.

The ceiling speaker 10 includes a housing 12 installed on the back surface Tb of the ceiling plate T, and one direction of the housing 12 extends long. The bottom surface of the housing 12 has an opening, that is, the lower side of the housing 12 is open. Further, a speaker unit 14 as an electric device unit is provided in the central portion in the longitudinal direction, which is one direction in the housing 12. In other words, a unit accommodating portion 12c for accommodating the speaker unit 14 is formed in the central portion in the longitudinal direction of the housing 12. The axial center 14c of the speaker unit 14 is orthogonal to the longitudinal direction and the lateral direction. A plurality of heat radiating holes 12e are formed in the unit accommodating portion 12c of the housing 12. Further, a net-like protective member 16 that covers the sound emitting portion 14s of the speaker unit 14 is provided under the unit accommodating portion 12c of the housing 12.

A printed circuit board 18 is provided on one side (tip side) in the longitudinal direction in the housing 12, and the printed circuit board 18 is electrically connected to the speaker unit 14. A plurality of transformer transformers 20 and attenuator transformers 22 as first electric components connected to the speaker unit 14 are mounted on the printed circuit board 18 along the lateral direction. In other words, a transformer transformer 20 and an attenuator transformer 22 are provided along the lateral direction via the printed circuit board 18 on one side of the housing 12 in the longitudinal direction.

The transformer transformer 20 is a first electric component for selecting an appropriate impedance, and is electrically connected to the speaker unit 14 via a printed circuit board 18. The attenuator transformer 22 is a first electric component for adjusting the volume of the speaker unit 14, and is electrically connected to the speaker unit 14 via a printed circuit board 18. The transformer transformer 20 and the attenuator transformer 22 can also be regarded as a first electric component group connected to the speaker unit 14. The height dimension of the transformer transformer 20 and the attenuator transformer 22 is the second largest after the height dimension of the speaker unit 14, respectively. In the present embodiment, the height dimension of the transformer transformer 20 and the attenuator transformer 22 is larger than half of the height dimension of the housing 12, respectively.

A printed circuit board 24 is provided on the other side (tail end side) of the housing 12 in the longitudinal direction, and the printed circuit board 24 is electrically connected to the speaker unit 14. On the printed circuit board 24, a transformer transformer switch 26 and an attenuator transformer switch 28 as a plurality of second electric components connected to the speaker unit 14 are mounted along the longitudinal direction. In other words, a transformer transformer switch 26 and an attenuator transformer switch 28 are provided along the longitudinal direction via the printed circuit board 24 on the other side of the housing 12 in the longitudinal direction. The transformer transformer switch 26 and the attenuator transformer switch 28 are arranged on the other side of the transformer transformer 20 and the attenuator transformer 22 in the longitudinal direction in the housing 12.

The transformer transformer switch 26 is a second electric component that switches the operation mode of the transformer transformer 20, and the attenuator transformer switch 28 is a second electric component that switches the operation mode of the attenuator transformer 22. The transformer transformer switch 26 and the attenuator transformer switch 28 can also be regarded as a second electric component group connected to the speaker unit 14. The height dimensions of the transformer transformer switch 26 and the attenuator transformer switch 28 are smaller than the height dimensions of the transformer transformer 20 and the attenuator transformer 22, respectively. In the present embodiment, the height dimensions of the transformer transformer switch 26 and the attenuator transformer switch 28 are each less than half the height dimension of the housing 12.

On the tip side of the printed circuit board 18 with respect to the transformer transformer 20 (attenuator transformer 22), another second electric component connected to the speaker unit 14 or a terminal block 30 as another second electric component group is mounted. ing. In other words, a terminal block 30 is provided on one side of the housing 12 in the longitudinal direction via the printed circuit board 18. The terminal block 30 can be connected to a plurality of speaker wires (not shown) arranged on the back surface Tb of the ceiling plate T, and is connected to the speaker unit 14, the transformer transformer 20, and the attenuator transformer 22 via the printed circuit board 18 and the like. It is electrically connected. The height dimension of the terminal block 30 is smaller than the height dimension of the transformer transformer 20 and the attenuator transformer 22. In the present embodiment, the height dimension of the terminal block 30 is less than half the height dimension of the housing 12.

As shown in FIGS. 1, 3, 5, and 6, an inclined portion 12s is formed on one side (tip portion side) in the longitudinal direction of the unit accommodating portion 12c of the housing 12. The inclined portion 12s of the housing 12 is inclined with respect to the longitudinal direction so that the height dimension gradually decreases toward the tip direction (the tip on one side in the longitudinal direction). The printed circuit board 18, the transformer transformer 20, the attenuator transformer 22, and the terminal block 30 are respectively arranged on the inclined portion 12s of the housing 12 in an inclined state with respect to the axis (center line) 14c of the speaker unit 14. ing. The terminal block 30 is arranged on one side in the longitudinal direction with respect to the transformer transformer 20 and the attenuator transformer 22 in the housing 12.

A step portion 12d is formed on the other side (tail end portion side) in the longitudinal direction, which is the opposite side of the inclined portion 12s of the unit accommodating portion 12c in the housing 12. The step portion 12d is a flat surface that is recessed downward and is parallel to the bottom surface. The printed circuit board 24, the transformer transformer switch 26, and the attenuator transformer switch 28 are arranged below the step portion 12d of the housing 12 in a state parallel to the axis 14c of the speaker unit 14, respectively. The step portion 12d of the housing 12 is a flat surface recessed downward and parallel to the longitudinal direction. The step portion 12d of the housing 12 may be inclined with respect to the longitudinal direction.

At the lower ends of the side surfaces on both sides of the housing 12 in the lateral direction, an arch shape for avoiding interference between the ceiling speaker 10 and the back surface side edge of the ceiling hole Th when the ceiling speaker 10 is inserted into the ceiling hole Th. Notches 12n are formed respectively. The dimension of each notch 12n of the housing 12 in the longitudinal direction is set to be larger than the diameter of the speaker unit 14.

As shown in FIGS. 2 and 5, a mounting groove 12g is formed in the unit accommodating portion 12c of the housing 12. The mounting groove 12g of the housing 12 is provided with a tension coil spring 34 for mounting the circular decorative panel 32 on the surface Ta of the ceiling plate T so as to cover the ceiling hole Th and the speaker unit 14. As shown in FIGS. 7 and 8E, locking hooks 36 that can be locked to the locked portions 32a of the decorative panel 32 are provided at both ends (one end and the other end) of the tension coil spring 34, respectively. There is. As shown in FIGS. 2, 4, 5, and 6, the housing 12 is formed with a first insertion hole 12h for inserting one end side of the tension coil spring 34. A second insertion hole 12v for inserting the other end side of the tension coil spring 34 is formed at a point-symmetrical position of the first insertion hole 12h centered on the axial center 14c of the speaker unit 14 in the housing 12. ..

Subsequently, with reference to FIGS. 1 and 8A to 8E, a method of installing the ceiling speaker as a ceiling electrical device will be described including the operation of the present embodiment. The method of installing the ceiling speaker is a method for installing the ceiling speaker 10 on the back surface Tb of the ceiling plate T via the circular ceiling hole Th.

As shown in FIG. 1, first, a plurality of speaker wires (not shown) are pulled out from the ceiling hole Th and connected to the terminal block 30. Further, if necessary, a fall prevention wire (not shown) is attached at an appropriate position on the housing 12. Then, as shown in FIGS. 8A and 8B, in a state where the ceiling speaker 10 is tilted with respect to the ceiling plate T so as to raise the tip end side of the ceiling speaker 10, the tilted portion 12s of the housing 12 is inserted into the ceiling hole Th. Is inserted from the tip end side of the ceiling speaker 10 which is the side provided with. 8A and 8B show the state of insertion of the ceiling speaker 10 into the ceiling hole Th over time.

Here, as shown in FIG. 8B, when the ceiling speaker 10 is inserted into the ceiling hole Th, the ceiling speaker 10 is not tilted significantly with respect to the ceiling plate T by the inclined portion 12s of the housing 12. It is possible to avoid interference between 10 and an obstacle P such as a beam member on the back side of the ceiling plate T. Further, as shown in FIGS. 8B and 8C, the stepped portion 12d of the housing 12 allows the ceiling speaker 10 and the front peripheral edge portion of the ceiling hole Th to be connected to each other without significantly inclining the ceiling speaker 10 with respect to the ceiling plate T. Interference can be avoided. As shown in FIGS. 8C and 8D, the pair of notched portions 12n of the housing 12 allows the ceiling speaker 10 and the back surface side edge portion of the ceiling hole Th without being greatly tilted with respect to the ceiling plate T. Interference can be avoided.

After that, as shown in FIG. 8E, the ceiling speaker 10 is laid down on the back surface Tb side of the ceiling plate T, and the speaker unit 14 is placed so that the axis 14c of the speaker unit 14 coincides with the center of the ceiling hole Th. Align with the ceiling hole Th. Then, each locking hook 36 is locked to each locked portion 32a of the decorative panel 32, and the decorative panel 32 is attached to the surface Ta of the ceiling plate T so as to cover the ceiling hole Th by the urging force of the tension coil spring 34. .. As a result, the ceiling speaker 10 is installed on the back surface Tb of the ceiling plate T with the ceiling plate T sandwiched between the decorative panel 32 and the housing 12.

As described above, when the ceiling speaker 10 is inserted into the ceiling hole, the ceiling speaker 10 interferes with the obstacle P on the back side of the ceiling plate T without tilting the ceiling speaker 10 significantly with respect to the ceiling plate T. It is possible to avoid interference between the ceiling speaker 10 and the front peripheral edge portion of the ceiling hole Th, and interference between the ceiling speaker 10 and the back surface side edge portion of the ceiling hole Th. Therefore, even if the dimension of the ceiling speaker 10 in the longitudinal direction is enlarged, the increase in the insertion height (length in the vertical direction) on the back side of the ceiling plate T required when the ceiling speaker 10 is inserted into the ceiling hole Th is suppressed. be able to. If the housing 12 does not have the inclined portion 12s, the stepped portion 12d, and the pair of notched portions 12n, the ceiling speaker 10 must be greatly inclined with respect to the ceiling plate T, and the ceiling. The insertion height of the speaker 10 to the back side of the ceiling plate T is increased.

Therefore, according to the present embodiment, as described above, even if the space behind the ceiling plate T is narrow or an obstacle P such as a beam member exists on the back side of the ceiling plate T, the ceiling speaker 10 can be installed on the back surface Tb of the ceiling plate T. That is, according to the present embodiment, the decorative panel 32 can be miniaturized to enhance the design of the indoor space including the ceiling plate T, while maintaining the installability of the ceiling plate T of the ceiling speaker 10 on the back surface Tb. can.

The present invention is not limited to the above description of the embodiment. For example, the technical idea applied to the ceiling speaker 10 is applied to various ceiling electrical devices other than the ceiling speaker 10, such as a ceiling lighting device. It can be carried out in an embodiment. Further, the scope of rights included in the present invention extends not only to the ceiling speaker 10 but also to ceiling electrical equipment other than the ceiling speaker 10. The scope of rights included in the present invention extends not only to the installation method of the ceiling speaker but also to the installation method of the ceiling electric device other than the ceiling speaker.

10 Ceiling speaker (ceiling electrical equipment)
12 Housing 12c Unit accommodating part 12s Inclined part 12d Step part 12n Notch part 14 Speaker unit (electrical equipment unit)
14c axis (center line)
18 Printed circuit board 20 Transformer transformer (1st electrical component)
22 Attenuator transformer (1st electrical component)
24 Printed circuit board 26 Transformer switch (second electrical component)
28 Attenuator transformer switch (second electrical component)
30 terminal block (second electrical component)
32 Decorative panel 32a Locked part 34 Tension coil spring 36 Locking hook T Ceiling plate Ta Front surface Tb Back surface Th Ceiling hole P Obstacle

Claims (6)

A ceiling electrical device installed on the back surface of the ceiling plate through a ceiling hole formed in the ceiling plate.
A housing having an inclined portion whose height dimension decreases toward the tip on one side in the longitudinal direction,
An electrical equipment unit provided in the central portion of the housing in the longitudinal direction,
A first electric component or a first electric component group provided in the housing and connected to the electric device unit.
A second electric component or a second electric component group provided in the housing, connected to the electric device unit, and having a height dimension smaller than the height dimension of the first electric component or the first electric component group. With
A ceiling electric device characterized in that the first electric component or the first electric component group is arranged on the inclined portion of the housing in a state of being inclined with respect to the axial center of the electric device unit. The second electric component or the second electric component group is arranged in the housing on the other side of the first electric component or the first electric component group in the longitudinal direction with respect to the electric device unit. The ceiling electrical device according to claim 1, wherein the ceiling electrical device is provided. The ceiling electrical device according to claim 1 or 2, wherein arch-shaped notches are formed at the lower ends of the side surfaces on both sides in the lateral direction of the housing. A downwardly recessed step portion is formed on the other side in the longitudinal direction, which is the opposite side of the inclined portion of the housing, and the other second electric component or other second electric component group is below the step portion. The ceiling electrical device according to any one of claims 1 to 3, wherein the ceiling electrical device is arranged in. The ceiling electrical device according to any one of claims 1 to 4, wherein the electrical device unit is a speaker unit. In a state where the ceiling electric device according to any one of claims 1 to 3 is inclined with respect to the ceiling plate, the inclined portion of the housing is inserted into the ceiling hole formed in the ceiling plate. Insert from the side where
After that, the ceiling electric device is laid down on the back surface side of the ceiling plate, the electric device unit is aligned with the ceiling hole, and the ceiling electric device is installed on the back surface of the ceiling plate. How to install ceiling electrical equipment.

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