JP6194509B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture for a ceiling such as a downlight used by being embedded in a ceiling surface or the like.

  In a conventional lighting fixture such as a ceiling-embedded downlight, the connecting end portion of the fixed portion and the connecting end portion of the mounting portion start from the mutual rotation center, and the mutual distance increases toward the upper side. By having the power supply unit (lighting device) formed on the ceiling, the height dimension can be made as low as possible due to space restrictions on the back of the ceiling, and the power supply unit can be prevented from interfering with the edge of the embedding hole during installation. In this way, workability is improved (for example, see Patent Document 1).

JP 2011-70859 A

However, when attaching the lighting fixture to the ceiling, it is necessary to insert the power supply unit and the device body obliquely into the ceiling hole, so that the installed lighting fixture may be slightly tilted and there may be a gap between the ceiling plate and the lighting fixture. It was.

Also, when removing the luminaire, the direction in which the power supply unit on the ceiling plate is connected is not known, so it does not know which side to tilt and pull out from the ceiling hole. When trying to pull it out of the way, there was a risk of damaging the ceiling board.

  The present invention has been made to solve the above-described problems, and reduces the possibility of a gap between the luminaire and the ceiling panel, and the possibility of damaging the ceiling panel during attachment to and removal from the ceiling. An object of the present invention is to provide a lighting apparatus.

A lighting fixture according to the present invention includes a lamp having a light irradiating unit for irradiating light from an optical axis and a light source and a radiation fin, a lighting circuit board that supplies power to the lamp, and a lighting circuit case that covers the lighting circuit board. apparatus and includes an arm portion provided on the lamp side of the lighting circuit case you connect the lighting device and the lighting device, provided with a long hole to either the heat radiation fins and the arm portion, the arm that was not provided with a long hole by parts and by providing a shaft portion on the back side of the other one and the light irradiation portion of the heat radiating fin is inserted through the elongated hole holding is obtained by enabling and rotatable slide lighting device against the lamp .

  Since the lighting fixture of the present invention has a structure in which the lamp and the lighting device are attached, since the support shaft portion provided in the other is inserted and held in the elongated hole provided in either one of the arm portion and the heat radiating fin, The lighting device is slidable and rotatable up and down with respect to the lamp, and the lower surface of the lamp can be inserted into the ceiling hole while maintaining a parallel state with the ceiling surface. The possibility of generating a gap between them can be reduced.

It is a side view of the lighting fixture which concerns on embodiment of this invention. It is a perspective view of the lighting fixture which concerns on embodiment of this invention. It is a side view which shows the process in which the lighting fixture which concerns on embodiment of this invention is attached to a ceiling. It is a side view which shows the next process of attaching the lighting fixture which concerns on embodiment of this invention to a ceiling. It is a side view which shows the state which completed the attachment to the ceiling of the lighting fixture which concerns on embodiment of this invention.

Embodiment 1 FIG.
Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. In each figure, the same parts are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a side view of a lighting fixture according to the present embodiment, and FIG. 2 is a perspective view of the lighting fixture according to the present embodiment as viewed from above.

  As shown in FIGS. 1 and 2, the lighting fixture according to the present embodiment includes a lamp 1 having a light source (not shown) and a lighting device 2 that supplies electric power to the lamp 1. A light irradiation unit 3 is provided on the lower surface side of the lamp 1, and a discharge lamp (not shown) such as an LED, an organic EL, or a fluorescent lamp is mounted as a light source inside the light irradiation unit 3. . An annular flange 4 is formed around the light irradiation unit 3, and a mounting leaf spring 5 for holding the luminaire on the ceiling at predetermined intervals in three directions is formed on the upper surface of the flange 4. Has been placed. This mounting plate spring 5 constitutes an urging means. When the lamp 1 is attached to the ceiling surface, the attachment leaf spring 5 spreads and pushes the back surface (upper surface) of the ceiling plate 16 around the ceiling hole downward, and the flange 4 is the surface (lower surface) of the ceiling plate 16 around the ceiling hole. The ceiling hole is closed by the light irradiation unit 3 and the flange 4. In addition, on the back side of the opening portion of the lamp 1, a radiation fin 6 for radiating heat generated in the lamp 1 is integrally provided, and a pair of support shaft portions 7 for attaching the lighting device 2 to the radiation fin 6 is provided. It has been.

  The lighting device 2 is disposed at a lighting circuit board 8 that converts commercial AC power into lighting power, a lighting circuit case 9 that holds and covers the lighting circuit board 8, and an end of the lighting circuit case 9 opposite to the lamp 1. And a terminal block 14 for connecting a commercial AC power cable. The lighting circuit case 9 includes a pair of arm portions 11 having a long hole 10 extending in the vertical direction at the base end, and a case in which a gap is formed between the back surface of the ceiling plate 16 and the lighting device 2 when the ceiling is mounted. The leg part 12 and the case collar part 13 which covers the upper part of the terminal block 14 are integrally formed. In the lamp 1 and the lighting device 2, the support shaft portion 7 formed on the radiating fin 6 is inserted into the elongated hole 10 of the arm portion 11 of the lighting circuit case 9, so that the lighting device 2 is vertically moved with respect to the lamp 1. Can be slid and rotated.

The arm portion 11 secures a gap 15 between the heat radiation fin 6 and the lighting circuit case 9 so that air can easily flow in the vertical direction. Therefore, heat dissipation from the lamp 1, the lighting device 2, and the arm portion 11 is promoted, and heat generated in the lamp 1 and the lighting device 2 is difficult to conduct to the other. The lighting circuit case 9 has a function of protecting the lighting circuit substrate 8 and radiating heat generated in the lighting circuit, and is made of a member having high thermal conductivity such as metal. In the luminaire according to the present embodiment, the lamp 1 and the lighting device 2 are stably held because they are coupled by a pair of arms instead of a single arm, and between the radiation fin 6 and the lighting circuit case 9. The air gap 15 is secured between the arms to facilitate air flow.

In addition, the case leg part 12 ensures the space | gap between the lighting circuit case 9 and the back surface of the ceiling board 16, and makes it easy to flow air to the lower side of the lighting circuit case 9. FIG. Further, the case leg portion 12 has a circular arc shape or a rounded corner portion to reduce friction and catching between the lighting device 2 and the ceiling plate 16 when the lighting fixture is attached or detached.

The terminal block 14 for inputting commercial power supply power to the lighting circuit is disposed so as to be exposed outside the case at the tip of the lighting circuit case 9 so that the power cable can be easily connected. The case collar 13 is provided to protect the terminal block 14 and is configured to extend a part of the lighting circuit case 9 and cover the upper side of the terminal block 14. Thereby, the terminal block 14 is prevented from coming into contact with the ceiling back plate or the like when the lighting fixture is attached, and the accumulation of dust on the terminal block 14 is also suppressed. In the lighting fixture according to the present embodiment, the lighting circuit case 9 is held in an inclined state, and the case collar 13 is in a downward direction, so that the upper side of the terminal block 14 is covered obliquely, and the case Since the average horizontal distance A (see FIG. 5) from the tip of the collar portion 13 to the terminal block 14 becomes longer, there is an effect of further suppressing dust intrusion into the terminal block 14.

Next, a method for attaching the lighting fixture will be described with reference to FIGS. In FIG. 3, first, the support shaft portion 7 of the lamp 1 is positioned below the long hole 10 of the arm portion 11 of the lighting circuit case 9 so that the support shaft portion 7 is pivoted with respect to the lamp 1. In the state where the terminal block 14 side of the lighting device 2 is rotated upward, the lighting device 2 is obliquely inserted into the ceiling hole from the terminal block 14 side. At that time, the lighting device 2 is supported by a contact point between the lighting circuit case 9 and the edge of the ceiling hole and a support shaft portion 7 inserted through the elongated hole 10. The support shaft portion 7 is positioned below the elongated hole 10. Thus, the lighting device 2 can be inserted into the ceiling hole at a shallower angle along the ceiling plate 16 than when the support shaft portion 7 is located above the elongated hole 10, and the lighting device 2 is attached to the ceiling back plate 17. It makes it easy to avoid interference. Moreover, since the case collar 13 covers the upper side of the terminal block 14, the terminal block 14 is prevented from coming into contact with the ceiling back plate 17 when the lighting device 2 is inserted into the ceiling hole.

Next, the lamp 1 is moved almost directly below the ceiling hole while the lighting device 2 is inserted, and then the leaf spring 5 for mounting the lamp 1 is inserted into the ceiling hole so as to be squeezed against elasticity. Then, the lamp 1 is pushed straight up. At that time, as the lamp 1 is pushed upward, the lighting device 2 rotates downward by its own weight with the contact point at the edge of the ceiling hole as a fulcrum, and the case leg 12 of the lighting circuit case 9 becomes the back surface of the ceiling plate 16. When the lamp 1 is further pushed upward, the support shaft portion 7 slides to the upper portion of the long hole 10 (see FIG. 4). After the mounting plate spring 5 is inserted into the ceiling hole, the mounting plate spring 5 returns to the outer side above the ceiling plate 16, pushes the back surface of the ceiling plate 16 downward, and lifts the lamp 1 upward. On the other hand, the flange 4 formed around the opening of the lamp 1 contacts the lower surface (surface) of the ceiling plate 16 around the ceiling hole.

As shown in FIG. 5, when the lamp 1 is attached to the ceiling, the opening of the lamp 1 and the flange 4 block the ceiling hole, and the ceiling plate edge around the ceiling hole is attached to the plate spring 5 and flange. 4 to hold. The lighting shaft 2 is held by the case leg portion 12 and the support shaft portion 7 inserted through the elongate hole 10 of the arm portion 11 in a state where the support shaft portion 7 provided on the heat radiation fin 6 is positioned at the upper portion of the long hole 10. Is done. Although the lighting circuit case 9 is in an inclined state, the inclination is smaller than the state in which the support shaft portion 7 is below the elongated hole 10, and the upper end of the lighting device 2 on the arm portion side is lowered, so that the upper end of the lighting circuit case 9 is lowered. It becomes easy to ensure the space | interval with the ceiling back board 17, and the lower end by the side of the terminal block 14 of the lighting circuit case 9 goes up, and ensuring of the space | gap between the lower end and the back surface of the ceiling board 16 becomes easy.

In addition, when attaching and removing the lighting fixture, the case leg 12 in which the lighting device 2 is in contact with the back surface of the ceiling plate 16 corresponds to the vertical movement of the lamp 1 being pushed into and pulled out from the ceiling hole. However, since the case leg 12 has an arc shape or a shape with a rounded corner, the case leg 12 slides without being caught on the back surface of the ceiling plate 16, so that the ceiling plate can be attached to or removed from the lighting fixture. The risk of damaging 16 can be reduced. Note that the case leg 12 may be formed on the end face of the lighting circuit case 9 on the terminal block side.

Moreover, when removing a lighting fixture from a ceiling surface, it reverses to the time of attachment, and it reaches the state of FIG. 3 through the state of FIG. Specifically, in the state of FIG. 5, when the flange portion of the lamp 1 is grasped and pulled downward, the leaf spring is pushed at the edge of the ceiling hole and is narrowed. When the lamp 1 is further pulled down, the lighting circuit case 9 comes into contact with the edge of the ceiling hole, the lighting case 9 is held by the contact point and the case leg portion 12, and the support shaft portion 7 of the radiating fin 6 is the long hole of the arm portion 11. 10 moves downward (FIG. 4).

When the lamp 1 is further lowered, the support shaft portion 7 reaches the lower end of the long hole 10, and when further lowered, the lighting device 2 is connected to the support shaft portion 7 positioned at the lower end of the long hole 10 and the ceiling hole edge of the lighting circuit case 9. The terminal block 14 side of the lighting circuit case 9 is lifted by rotating with the contact point as a fulcrum, but when the mounting plate spring 5 of the lamp 1 is detached from the edge of the mounting hole, FIG. The state shown in is reached. If it will be in this state, since the connection direction of the lamp 1 and the lighting device 2 can be identified visually, the lighting device 2 can be easily pulled out diagonally.

In addition, while the support shaft portion 7 moves from the upper end to the lower end of the long hole 10, the lamp 1 moves downward, but the lighting device 2 such as the lighting circuit case includes the case leg 12 of the lighting circuit case 9, It does not move because it is supported by the contact point between the lighting circuit case 9 and the edge of the ceiling hole. For this reason, there is no movement of the support shaft portion that connects and rotates the lamp and the lighting device, and the lighting device 2 terminal block 14 and the case are compared with the case where the lighting device 2 rotates about the contact point. The possibility that the flange 13 interferes with the ceiling back plate 17 can be suppressed.

In addition, the lighting fixture according to the present embodiment fits compactly in a narrow space when mounted on the ceiling, and the lighting circuit case 9 is held in an inclined state, and the back surface of the ceiling plate 16 and the lighting circuit case 9 are held by the case legs 12. Between the arm portions of the pair of lighting circuit cases 9, and when the lighting circuit board 8 generates heat and the temperature of the lighting circuit case 9 rises, for example, FIG. As indicated by the arrows in FIG. 5, the air easily flows along the case below the lighting circuit case 9, so that the heat from the luminaire can be effectively dissipated.

Furthermore, although the lighting fixture which concerns on the said embodiment showed the example which provided the pair of spindle part 7 in the radiation fin 6 of the lamp 1, and provided the long hole 10 in the arm part 11 of the lighting device 2, the lamp 1 A pair of elongated holes 10 is provided in the heat radiating fin 6, and a pair of support shaft portions 7 are provided in the arm portion 11 of the lighting device 2 and inserted into the elongated hole 10, so that the lighting device 2 and the lamp 1 can be connected. The same effect can be obtained even if it can slide and rotate in the vertical direction. Further, instead of the pair of support shaft portions 7, a support shaft portion is provided on the heat radiation fin 6 of the lamp 1 or the arm portion 11 of the lighting device 2, and the shaft of the support shaft portion is inserted into the long hole 10. The same effect can be obtained even if the lighting device 2 is slidable and rotatable in the vertical direction with respect to the lamp 1.

Moreover, in the lighting fixture which concerns on this Embodiment, while providing the spindle part 7 in the radiation fin 6 of the lamp 1, the case leg part 12 and the arm part 11 are formed integrally with the lighting circuit case 9 of the lighting device 2, By providing the long hole 10 in the arm portion 11 and inserting and holding the support shaft portion 7, the lighting device 2 can be slidable and rotatable in the vertical direction with respect to the lamp 1. Therefore, the lamp 1 and the lighting device 2 can be arranged in a compact manner, and not only the lamp 1 and the lighting device 2 are easily mounted in a narrow ceiling space, but also the arm portion 11 and the case leg portion 12 are connected to the lighting circuit case 9. Therefore, there are few members for connecting the case lamp 1 and the lighting device 2, and it is possible to obtain a lighting fixture with reduced assembly cost and member cost.

Furthermore, when the lamp 1 is attached to the ceiling surface, it is pushed upward from below the ceiling hole while maintaining the parallel state of the lower surface of the lamp 1 and the ceiling surface by the vertical sliding mechanism using the long hole 10. Thus, it is not necessary to incline and insert when attaching to the ceiling hole as in the conventional lighting fixture shown in Prior Art Document 1. For this reason, when the lamp 1 is attached to the ceiling surface, the possibility that the lamp 1 is slightly inclined and a slight gap is generated between the ceiling surface and the flange 4 can be reduced. In addition, no matter which direction the mounting plate spring 5 is arranged in the lamp 1, the tip of each plate spring can be inserted at the same time when the plate spring is narrowed and inserted into the ceiling hole. It is possible to increase the number of leaf springs 5. When there are two leaf springs (two directions) for lifting and holding the lamp 1 upward, the lamp 1 may be inclined or a gap may be formed between the ceiling surface and the flange 4. When the number of leaf springs 5 for mounting is three or more at a predetermined interval as in the lighting fixture according to the present embodiment, the possibility that the lamp 1 tilts is reduced and lifted upward in a well-balanced manner on the ceiling surface. The flange 4 can be attached without a gap.

In addition, when the number of leaf springs 5 for mounting is small, it is necessary to use a strong spring force of each leaf spring in order to securely hold the lighting fixture on the ceiling plate 16. It is necessary to increase the spring force per leaf spring as compared with the case where a leaf spring is used. However, when attaching or removing the lighting fixture, if the spring force of each leaf spring is strong, the force applied to the edge of the ceiling hole with which the leaf spring abuts increases, and the possibility of damaging the ceiling plate 16 increases. . Therefore, in the lighting fixture according to the present embodiment, three or more leaf springs are used and the spring force of each leaf spring is reduced to reduce the local force applied to the ceiling plate 16. In the present embodiment, an example in which the number of leaf springs 5 for mounting is three is shown. However, if there are four or more leaf springs, the spring force per leaf spring can be further reduced, so that the lighting fixture can be attached. -The possibility of damaging the ceiling plate 16 can be further reduced by distributing the force locally applied to the periphery of the mounting hole of the ceiling plate 16 to each leaf spring during removal. The biasing means is not limited to a leaf spring, and any means may be used as long as it has a mechanism for fixing the lamp 1 to the ceiling plate 16.

Further, in the case of attaching and removing the lighting fixture as in the conventional lighting fixture shown in Prior Art Document 1, when the lighting fixture 1 needs to be tilted, the direction in which the lighting fixture 1 is tilted at the time of removal is not known. The ceiling plate 16 may be damaged by applying an excessive load. Or the restrictions on the design of the lamp 1 may be added so that the direction in which the lamp 1 is tilted can be identified. However, according to the luminaire according to the present embodiment, there is no restriction that makes it possible to identify the direction in which the lighting device 2 is connected on the design because there is no need to tilt the lamp 1 when performing removal. Even if the direction in which the lighting device 2 is connected is not known, it is possible to obtain a lighting fixture that does not cause an excessive load on the ceiling panel 16.

1 lamp, 2 lighting device, 3 light irradiation part, 4 flange,
5 leaf spring for mounting, 6 heat radiation fin, 7 spindle, 8 lighting circuit board,
9 lighting circuit case, 10 long hole, 11 arm part, 12 case leg part,
13 Case buttock, 14 Terminal block, 16 Ceiling board, 17 Ceiling back board

Claims (6)

A lamp having a light source, a light irradiating unit for irradiating light from the light source, and a radiation fin;
A lighting circuit board for supplying power to the lamp, and a lighting device having a lighting circuit case covering the lighting circuit board;
An arm portion provided on the lamp side of the lighting circuit case you connects the lighting device and the lighting device,
With
Either one provided with a long hole in the radiator fins and the arm portion, the other one and back side of the light irradiation portion of the heat radiating fins and the arm portion not provided with the elongated hole, the support shaft The lighting apparatus is characterized in that the lighting device is slidable and rotatable with respect to the lamp by being provided and inserted and held in the elongated hole. The lighting fixture according to claim 1, wherein a gap portion formed by the arm portion is provided between the lighting circuit case of the lighting device and the heat radiation fin of the lamp. The lighting circuit to form a casing legs integrally from the case bottom surface and an end portion at a position closer to the center, claim, characterized in that the provided spacing between the lighting device and the ceiling plate rear surface when the ceiling mount 1 or The lighting fixture of 2 . The lighting fixture according to claim 3 , wherein the case leg portion has an arcuate shape or a rounded corner portion at a portion that contacts the back surface of the ceiling plate. The lighting device according to claim 3 or 4, wherein the case leg has a length for holding the lighting circuit case in an inclined state when the ceiling is attached to the ceiling. A light source that irradiates light from the light source and a lamp that is located on the back side of the light irradiation unit and has a height that is about the radius of the light irradiation unit;
A lighting circuit board for supplying power to the lamp, and a lighting device having a lighting circuit case covering the lighting circuit board;
An arm portion provided on the lamp side of the lighting circuit case for connecting the lamp and the lighting device;
With
A long hole is provided in one of the arm part and the lamp, and a supporting shaft part is provided on the other side of the arm part and the lamp that is not provided with the long hole and on the back side of the light irradiation part. The lighting apparatus, wherein the lighting device is slidable and rotatable with respect to the lamp by being inserted and held in the elongated hole.

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