JP6584817B2 - LED lighting device - Google Patents

Description

  The present disclosure relates to an LED lighting device.

  2. Description of the Related Art In recent years, LED lighting devices using LED (Light Emitting Diode) elements, which are excellent in power saving, as light sources have become widespread due to increasing environmental awareness. As one type of LED lighting device, an LED downlight that is embedded in a ceiling is known.

  For example, Patent Document 1 discloses a downlight including a base to which an LED light emitting unit is attached, a plurality of heat radiation fins standing from the base, and an electric wire that supplies power to the LED light emitting unit. This LED lighting device is connected to a power supply box provided separately from the luminaire main body by an electric wire. The electric wires pass through the electric wire insertion holes of the base, extend from the lower side to the upper side outside the plurality of radiating fins, and then connected to the power supply box.

JP 2012-048996 A

  However, as in Patent Document 1, the electric wire is arranged at a position that is outside the plurality of heat dissipating fins and opened to the outside of the base when viewed along the rising direction (vertical direction) of the fin. Therefore, when the lighting device is attached to a construction material such as a ceiling material, the electric wire may be damaged by the contact.

  Further, in order to facilitate the mounting operation, when the connector is provided on the electric wire and connected to the power source via the connector, the electric wire before the attachment hangs, so it is necessary to appropriately guide the electric wire.

  This indication was made paying attention to such a subject, and the object is to provide the LED lighting device which improved handling of an electric wire.

  In order to achieve the above object, the present disclosure takes the following measures.

  That is, the LED lighting device according to the present disclosure includes an LED board on which an LED element is disposed, a base to which the LED board is attached, a radiating fin standing from the base to the opposite side of the board, and power to the LED board. An electric wire to be supplied, and when viewed along the standing direction, the electric wire is located on the opposite side of the LED board from the LED board side at a position that is open to the outside of the base and the outside of the radiating fin. A guide cover member is provided for guiding the electric wire to the side opposite to the substrate while covering the electric wire from the outside of the base.

  Since the electric wire is open to the outside of the radiating fin and outside the base, the electric wire may be damaged by contact during the mounting operation of the lighting device. However, since a guide cover member is provided to guide the electric wire to the non-board side while covering the electric wire from the outside of the base, the electric wire is guided to the anti-board side while preventing contact with the electric wire from the outside of the base. can do.

The perspective view which shows the LED lighting apparatus of this embodiment. The perspective view which shows LED lighting apparatus. The disassembled perspective view which shows each member which comprises LED lighting apparatus. The longitudinal cross-sectional view of a LED lighting apparatus. The bottom view which shows the attachment position of the LED board with respect to a base. The perspective view which shows the relationship between a base and an electric wire fixing member. The top view which shows LED lighting apparatus. The perspective view which looked at the guide cover member from the inner side of the base.

  Hereinafter, an illumination device according to an embodiment of the present disclosure will be described with reference to the drawings.

[Basic configuration]
As shown in FIGS. 1 to 4, the LED lighting device includes a substrate 1 on which an LED element 10 using an LED (Light Emitting Diode) is mounted, a base 2 to which the substrate 1 is attached, and a substrate 1. A translucent cover 3 for covering, a reflecting member 4 for reflecting light that has passed through the translucent cover 3, an outer cylinder 5 for supporting the base 2, and a plurality of fixing springs for fixing to the embedding holes of the ceiling material 6. As shown in FIGS. 1 and 2, the LED lighting device has a shape in which the cylindrical portion and the cylindrical portion are coaxially coupled as a whole in a state where the portions 1 to 5 are assembled, and the cylindrical portion is downward X2. It is embedded in the embedding hole of the ceiling material so as to open, and light is irradiated from the cylindrical portion. In addition, in order to make an understanding easy in this specification, upper X1 and lower X2 mean the direction in the installation state to a ceiling material.

  1-4, the outer cylinder 5 is provided at the lower end of the cylindrical outer cylinder main body 50 and the outer cylinder main body 50, and as shown in FIGS. Have In this embodiment, the outer cylinder 5 is formed of resin, but may be formed of any member such as metal.

  The plurality of fixed springs 6 are made of metal, and are attached radially to the outer peripheral surface of the outer cylinder main body 50 as shown in FIGS. 1 and 2. In the present embodiment, four fixing springs 6 are formed, but the number can be changed as appropriate, and preferably three or more. The fixed spring 6 extends radially outward from the outer cylinder body 50 in a natural state where no external force is received. Before installation, the fixing spring 6 is bent from the root so as to face upward, and is inserted together with the outer cylinder 5 into the embedding hole of the ceiling material. As the LED lighting device advances to the back of the embedding hole, the fixed spring 6 opens radially outward on the back side of the ceiling material by the accumulated elastic repulsive force, and engages with the ceiling material to support the LED lighting device.

  As shown in FIGS. 3 and 4, the base 2 has a circular plate-shaped portion having a substrate mounting surface 20 for mounting the LED substrate 1, and a plurality of standing up from the circular plate-shaped portion along the axial direction. Radiating fins 21 are formed. The base 2 is formed in a columnar shape as a whole including the radiation fins 21. The entire end surface of the base 2 is set to the board mounting surface 20. The base 2 is fixed to the upper end portion of the outer cylinder 5 by a fastener v such as a screw. The base 2 is formed of a metal having thermal conductivity, and heat radiation fins 21 that stand up outside are integrally formed. Thereby, the base 2 also serves as a heat radiating member that receives the heat of the LED board 1 at the board mounting surface 20 and releases it to the outside through the heat radiating fins 21. In this embodiment, although the base 2 is formed by cold forging, it is not limited to this, For example, you may manufacture by die-casting. Although the base 2 is comprised with aluminum, if it is a material which has heat conductivity, it will not be limited to aluminum.

  The LED substrate 1 is formed of an insulating material, and a plurality of LED elements 10 are mounted on the surface as shown in FIGS. An electric wire K that supplies power to the LED element 10 is connected to the surface of the LED substrate 1. The electric wire K receives electric power from a power supply circuit unit (installed on the back or beam of the ceiling material) provided outside the LED lighting device. In the present embodiment, the LED substrate 1 has a circular plate shape, but is not limited thereto. For example, it may be oval or rectangular. The plurality of LED elements 10 are arranged in a grid pattern, but the present invention is not limited to this. The shape of the substrate 1 and the arrangement of the LED elements 10 can be changed as appropriate. The LED substrate 1 is attached to the base 2 with a fastener v such as a screw, and directly or indirectly adheres to the substrate attachment surface 20 and transfers heat to the base 2. In the present embodiment, screen-printed heat transfer grease (heat conductive material) is applied between the LED board 1 and the board mounting surface 20, but the present invention is not limited to this. For example, it may be in direct contact with nothing between them, or a heat transfer sheet may be interposed.

  As shown in FIGS. 3 and 4, the translucent cover 3 (see FIG. 3) is formed of a resin and allows light from the LED element 10 to pass through while diffusing. The translucent cover 3 is attached to the base 2 together with the LED substrate 1 by a fastener such as a screw.

  The reflecting member 4 has a cylindrical shape having an inlet 40 and an outlet 41, and an inner peripheral surface is set as a reflecting surface 42. The reflecting member 4 is inserted inside the outer cylinder 5 and is fixed to the outer cylinder 5 with a fastener v such as a screw without contacting the LED substrate 1. The reflecting member 4 is reflected by the reflecting surface 42 until the light that has passed through the translucent cover 3 and entered the entrance 40 exits from the exit 41. In the present embodiment, the reflecting member 4 is formed of resin, but is not limited thereto, and may be formed of metal.

  When power is supplied to the LED substrate 1 via the electric wire K, the LED element 10 emits light. Light from the LED element 10 is diffused while passing through the translucent cover 3 and enters the entrance 40 of the reflecting member 4. The light that has entered the entrance 40 of the reflecting member 4 is irradiated toward the desired illumination target area from the exit 41 while being partially reflected by the reflecting surface 42.

[Detailed configuration]
In contrast to the basic configuration of the LED lighting device, the present embodiment further includes the following configuration.

  As shown in FIGS. 5 and 3, the LED substrate 1 is formed smaller than the substrate mounting surface 20 which is one end surface of the base 2. The board attachment surface 20 includes a first area Ar1 where the LED board 1 is placed and a second area Ar2 that remains on the outside of the first area Ar1 when the LED board 1 is attached. The first region Ar1 and the second region Ar2 are formed flush with each other.

  Positioning portions 11 and 22 for aligning the LED substrate 1 are provided in the edge portion of the LED substrate 1 and the second region Ar2. The alignment portion 11 provided on the LED substrate 1 is a notch 11 formed at the edge, and the alignment portion 22 provided in the second region Ar2 is a through portion 22 that penetrates the plate-like portion of the base 2. is there. In this embodiment, although the alignment parts 11 and 22 are made into the notch 11 and the penetration part 22, it is not limited to this. As long as the board mounting surface 20 is flush, it can be changed as appropriate.

  There is a notch 12 for inserting a screw v at the edge of the LED substrate 1, and the screw v is fastened in a screw groove formed in the board mounting surface 20 with the screw head pressing the notch 12. Is done.

  An electric wire K that supplies power to the LED board 1 is wired from the front side to the back side of the LED board 1 through the notch 11 and the through portion 22. Since it is conceivable that the electric wire K is shaken by transportation or the like, there is a possibility that a failure may occur in a portion of the electric wire K where stress is easily concentrated (for example, a connection portion between the LED board 1 and the electric wire K).

  Therefore, in order to fix the electric wire K, as shown in FIGS. 5 and 6, an electric wire fixing member 7 that sandwiches the electric wire K is provided. The electric wire fixing member 7 clamps the electric wire K in a state where it is inserted into the penetrating portion 22. The electric wire fixing member 7 is formed of resin or rubber, and has a cylindrical shape having a constriction projection 7a for holding the electric wire K on the inner peripheral surface. The electric wire fixing member 7 is formed into a cylindrical shape by fitting the two divided members together. The penetration part 22 into which the electric wire fixing member 7 is inserted is opened to the outer end of the plate-like part of the base 2, and the electric wire fixing member 7 can be inserted from the outer side. Grooves 7b and convex shapes 22b extending along the direction orthogonal to the axial direction are formed on the outer surface of the wire fixing member 7 and the inner surface of the penetrating portion 22, and the movement of the wire fixing member 7 along the axial direction is restricted. Has been. Of course, if it is the structure which has the electric wire fixing member 7 on both sides of the electric wire K, it will not be limited to a cylinder shape. Moreover, although the penetration part 22 is formed in the notch shape at the edge of the plate-shaped part of the base 2, it is good also as a through-hole instead of a notch.

  As shown in FIGS. 7, 1, and 4, the electric wire K is an LED substrate at a position that is open to the outside of the base 2 and outside the radiation fin 21 when viewed along the standing direction X <b> 1. It extends from one side (lower X2) to the opposite substrate side (upper X1). Thereby, if there is nothing, the electric wire K is exposed to the side, and it cannot be said that there is no possibility that the electric wire K is damaged by the contact during the mounting operation of the lighting device. Therefore, a guide cover member 8 is provided for guiding the electric wire K to the side opposite to the board (upward X1) while covering the electric wire K from the outside of the base 2. In this embodiment, the guide cover member 8 is fixed to the base 2 with a fastener such as a screw, but is not limited thereto. For example, the guide cover member may be fixed to another member such as an outer cylinder.

  7 and 8, the guide cover member 8 covers the electric wire K from the outside of the base 2 and opens to the inside of the base 2 when viewed along the standing direction X1. It has a part 80. Of course, the guide cover member 8 may be a simple cylinder. As shown in FIGS. 1 and 8, the guide cover member 8 includes a holding portion 81 that holds the electric wire K at a position that is a predetermined distance away from the base 2 on the side opposite to the board (upward X <b> 1). The predetermined distance can be appropriately changed according to the size of the apparatus. In the present embodiment, the holding portion 81 is an annular member through which the electric wire K is inserted, but is not limited thereto. For example, the electric wire K may be held between two holding pieces provided at a smaller interval than the electric wire K. As shown in FIG.1 and FIG.8, the cross-sectional U-shaped site | part 80 has extended from the LED board | substrate 1 side (downward) to the non-board | substrate side (upper X1), and has comprised long shape. As shown in FIGS. 1, 7, and 8, the base end side of the U-shaped section 80 is attached to the base 2 with a screw v. As shown in FIGS. 7 and 8, a fin engaging portion 82 (dent) corresponding to the shape of the heat radiating fin 21 is provided on the distal end side of the U-shaped section 80, and the fin engaging portion 82 is The heat dissipating fins 21 are engaged and fixed. In the present embodiment, the fin engaging portion 82 is a depression, but the present invention is not limited to this as long as the position can be fixed in contact with the radiation fin 21. For example, it may be a protrusion.

  As shown in FIG. 4 and FIG. 7, a fixing portion 83 for fixing the electric wire K is provided at the tip portion of the plurality of radiating fins 21, and the electric wire K is fixed to the fixing portion 83. Is preferred. In this embodiment, the fixing | fixed part 83 forms the ring | wheel part, and the fixing | fixed part 83 and the electric wire K are being fixed with string materials, such as a binding band. The fixing portion 83 can be changed as appropriate.

  As described above, the LED lighting device of the present embodiment stands up from the LED board 1 on which the LED element 10 is arranged, the base 2 to which the LED board 1 is attached, and the base 2 to the side opposite to the board (upward X1). The heat dissipating fins 21 and the electric wires K for supplying power to the LED substrate 1 are provided. When viewed along the standing direction X <b> 1, the electric wire K is located outside the radiation fin 21 and opened to the outside of the base 2, from the LED board side (lower X <b> 2) to the non-board side (upper X <b> 1). It extends to. A guide cover member 8 is provided for guiding the electric wire K to the side opposite to the board (upward X1) while covering the electric wire K from the outside of the base 2.

  Since the electric wire K is open to the outside of the radiating fin 21 and to the outside of the base 2, there is a possibility that the electric wire may be damaged by contact during the mounting operation of the lighting device. However, in this embodiment, since the guide cover member 8 that guides the electric wire K to the opposite side of the board (upward X1) while covering the electric wire K from the outside of the base 2 is provided, the electric wire from the outside of the base 2 is provided. The electric wire K can be guided to the non-board side (upward X1) while preventing contact with K.

  In this embodiment, the guide cover member 8 covers the electric wire K from the outside of the base 2 and opens the electric wire K to the inside of the base 2 when viewed along the standing direction X <b> 1. Have

  According to this configuration, the electric wire K is covered from the outside of the base 2 to protect the electric wire K, and the electric wire K is opened to the inner side of the base 2, so that the electric wire K is protected and heat is radiated from the electric wire K. It is possible to achieve both of these appropriately.

  In the present embodiment, the U-shaped section 80 has a long shape extending from the LED substrate side (lower X2) to the non-substrate side (upper X1), and the base end side of the U-shaped section 80 is the base 2. The distal end side of the U-shaped portion 80 having a cross-section is fixed to be engaged with the heat radiation fin 21.

  According to this configuration, the guide cover member 8 can be appropriately fixed as compared with the case where the long guide cover member 8 is cantilevered only at the base end, and the function of protecting the electric wire K by the guide cover member 8 is achieved. Can be accurately secured.

  In the present embodiment, the guide cover member 8 has a holding portion 81 that holds the electric wire K at a position away from the base 2 toward the side opposite to the board (upward X1).

  According to this structure, since the electric wire K is hold | maintained in the position away from the base 2 to the non-board | substrate side (upper X1), it can reduce that the electric wire K hangs.

  In the present embodiment, the electric wire K is fixed to a fixing portion 83 provided at the distal end portion of the plurality of radiating fins 21.

  According to this structure, since the fixing | fixed part 83 provided in the radiation fin 21 and the holding | maintenance part 81 of the guide cover member 8 cooperate and support the electric wire K, the wobbling of the electric wire K can be suppressed appropriately.

  The present disclosure is not limited to the embodiment described above. The structure employed in each of the above embodiments can be employed in any other embodiment. The specific configuration of each unit is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present disclosure.

DESCRIPTION OF SYMBOLS 1 ... LED board 10 ... LED element 2 ... Base 21 ... Radiation fin 8 ... Guide cover member 80 ... Section U-shaped part 81 ... Holding part 83 ... Fixing part K ... Electric wire X1 ... Upper direction (anti-substrate side, standing direction)
X2 ... Down (LED board side)

Claims (2)

An LED substrate on which the LED element is disposed;
A base to which the LED substrate is attached;
Radiating fins standing from the base to the side opposite the substrate;
An electric wire for supplying power to the LED substrate,
Has a notch in the plate-like part of the base
At the tip of the radiating fin, there is a fixing part for fixing the electric wire
An electric wire fixing member for fixing the electric wire is inserted into the notch,
When viewed along the standing direction, the electric wire extends from the electric wire fixing member to the non -substrate side at a position that is open to the outside of the base and outside of the radiating fin,
A guide cover member is provided for guiding the electric wire to the non-board side while covering the electric wire from the outside of the base ;
The electric wire guided by the guide cover member is fixed to the fixing portion.
LED lighting device. The LED lighting device according to claim 1, wherein an upper front end side of the guide cover is fixed while being engaged with the radiation fin.

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