JP2013089579A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an adverse effect of heat generation with easy installation of an LED lighting fixture, in one emitting light with supply of a commercial power supply.SOLUTION: The lighting fixture is provided with a light-emitting part 11 with a number of LED elements arrayed, and a gap between it and a light source circuit 26. In the LED lighting fixture, the LED elements and the power source circuit 26 are both indispensable components, both generating heat at operation, and also, deteriorating due to the heat. Thus, the LED elements and the light source circuit 26 are preferably put in separation at operation. From this point, this structure is desirable since it includes a gap between the light-emitting part 11 (LED elements) and the light source circuit 26. Such a structure can be realized by providing a lighting fixture body 10 and a chassis 20 as different bodies and setting the light source circuit 26 at a chassis 20 side.

Description

  The present invention relates to a structure of a lighting fixture in which a light emitting diode element (LED) is used.

  Incandescent bulbs and fluorescent lamps have been widely used for ordinary household lighting because of their high illuminance and economy. However, in recent years, the large power consumption has become a problem. For this reason, instead of incandescent bulbs and fluorescent lamps, illumination using LED (Light Emitting Diode) elements that can obtain illuminance equivalent to these with low power consumption has become widespread.

  In a fluorescent lamp, for example, electrodes are provided at both ends of a glass tube having an elongated cylindrical shape (straight tube type), and light is emitted by applying an AC 100 V of a commercial power source between the electrodes. For this reason, two pins are provided at both ends, and these pins are locked to terminals provided on the fixture of the fluorescent lamp, whereby the fluorescent lamp is fixed to the fixture. At this time, a commercial power source is connected to the terminal of the fixture, and this pin plays two roles of energizing the fluorescent lamp and mechanically fixing the fluorescent lamp. The electrodes and pins at both ends of the fluorescent lamp are directly connected, and the elongated area between the electrodes at both ends emits light substantially uniformly.

  On the other hand, it is a small LED element of about several square mm that directly emits light in the LED lighting apparatus. However, it is preferable that the form of the lighting fixture or the light emitting area has the same extent as that of the fluorescent lamp. For this reason, in LED lighting fixtures, a large number of LED elements are arranged in a direction corresponding to the longitudinal direction of the straight tube in the fluorescent lamp. Unlike a fluorescent lamp, an LED element operates with a low-voltage direct current, whereas it is preferable to use a commercially available power supply (AC 100 V) as a power supply for LED lighting fixtures. For this reason, the LED lighting apparatus generally includes a power supply circuit that converts AC 100V of commercial power into a lower DC voltage. Further, since each LED element and power supply circuit generate heat during operation, a heat radiating plate or the like for performing this heat dissipation is also used.

  Since it comprises such a configuration, the LED lighting apparatus is heavier than a fluorescent lamp as a whole. On the other hand, fluorescent lamps and LED lighting fixtures are generally often installed on the ceiling in a house. In such a case, the LED lighting apparatus is likely to fall particularly in the event of an earthquake or the like. For this reason, it is necessary to fix a heavy LED lighting fixture with sufficient strength. On the other hand, in the conventional method of fixing both ends with pins, the fixing strength is insufficient. On the other hand, since the LED lighting apparatus is a consumable item with a long life, it is also required that the user can easily perform the replacement operation.

  In consideration of such points, Patent Document 1 proposes an LED lighting fixture mounting structure. In this structure, a straight tube type LED lighting fixture body having the same form as a fluorescent lamp is used. A rectangular box-shaped mounting portion is integrated and provided near the center. This attachment portion is fixed to a fixing portion fixed to the ceiling with screws. Under the present circumstances, the electrical connection between a LED lighting fixture main body and a commercial power source is made inside a box-shaped attachment part. In this structure, since the LED lighting fixture main body can be firmly fixed to the fixing portion, it is possible to cope with the case where the LED lighting fixture main body is heavy. The connection of the power supply line can be easily performed using a commonly used power supply connector or the like, and the LED lighting apparatus main body can be easily fixed to the fixing portion using, for example, four screws. That is, the user can easily make this setting.

JP 2011-76749 A

  However, in LED lighting fixtures, heat generation of LED elements and power supply circuits during operation becomes a problem. Although the LED lighting fixture main body is easily and firmly fixed by the technique described in Patent Document 1, it is difficult to reduce the influence of this heat generation.

  Thus, in the LED lighting apparatus which emits light when supplied with a commercial power source, it is difficult to easily install the LED lighting apparatus and reduce the influence of heat generation.

  The present invention has been made in view of such problems, and an object thereof is to provide an invention that solves the above problems.

In order to solve the above problems, the present invention has the following configurations.
The luminaire of the present invention is a luminaire in which a light-emitting unit that houses a light-emitting diode element and a power supply unit that converts an AC voltage into a DC voltage used to drive the light-emitting diode element are used, and the upper surface is fixed to a house. By being installed in the house, the chassis in which the power supply unit is fixed to the opposite side of the house on the upper surface, the mounting unit fixed to the chassis when in use, and the light emitting unit are integrated, A lighting fixture body that does not have a power supply unit, and when the mounting portion is fixed to the chassis, a gap is formed between the light emitting unit and the power supply unit. Features.
In the luminaire of the present invention, in the chassis, a chassis-side power connector is derived from the power supply unit, and in the luminaire main body, a body-side power connector connected to an electrode of the light-emitting diode element is derived, and the mounting portion When the is fixed to the chassis, the chassis-side power connector and the body-side power connector are housed and connected in the gap.
In the lighting fixture of the present invention, the chassis and the attachment portion engage one of the claws and grooves provided in the chassis and the other of the claws and grooves provided in the attachment portion. It is fixed by this.
In the lighting fixture of the present invention, the claw and the groove are provided on one side surface of the chassis and the mounting portion, and side surfaces intersecting the one side surface of the chassis and the mounting portion are fixed by screws. To do.
In the lighting fixture of the present invention, the upper surface is fixed to a ceiling of the house.

  Since this invention is comprised as mentioned above, in the LED lighting fixture which light-emits when a commercial power supply is supplied, the installation is easy and the influence of heat_generation | fever can be reduced.

In the lighting fixture used as embodiment of this invention, it is a perspective view which shows the form after the lighting fixture main body and the chassis were assembled | attached. It is a perspective view of the lighting fixture main body in the lighting fixture used as embodiment of this invention. It is a perspective view of the chassis in the lighting fixture used as embodiment of this invention. It is the perspective view which expanded the attaching part of the lighting fixture main body in embodiment of this invention. It is sectional drawing of the lighting fixture used as embodiment of this invention.

  Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described. This luminaire includes a luminaire main body (main body) in which LED (light emitting diode) elements are arranged and a chassis. The chassis is fixed to a ceiling of a house, for example, and functions as a lighting fixture by installing a lighting fixture body on the chassis. This is the same as the technique described in Patent Document 1. However, a power supply unit that converts a commercial power supply (AC 100 V) into a DC low voltage for driving the LED element is fixed to the chassis.

  FIG. 1A is a perspective view of the luminaire 10 when the luminaire main body 10 is fixed to the chassis 20 as viewed obliquely from above, and FIG. 1B is also viewed from obliquely below. It is a perspective view. Here, the upper side (the arrow in the figure) is the upper side in the vertical direction when the lighting fixture is actually used. As will be described later, for example, since the upper surface of the chassis 20 is attached to the ceiling of the house, the ceiling is actually present on the upper side of the chassis 20, but the description thereof is omitted.

  FIG. 2A is a perspective view of the luminaire main body 10 as viewed obliquely from above, and FIG. 2B is a perspective view of the luminaire body 10 as viewed from obliquely below. FIG. 3A is a perspective view of the chassis 20 as viewed obliquely from above, and FIG. 3B is a perspective view of the chassis 20 as viewed from obliquely below. The luminaire main body 10 and the chassis 20 in FIGS. 2 and 3 are described corresponding to FIG.

  As shown in FIG. 2 (a), in this luminaire main body 10, a box-shaped mounting portion 12 whose upper side is opened is integrated and fixed at the center portion of a straight tubular light emitting portion 11 elongated in the horizontal direction. Has been. FIG. 4 is an enlarged perspective view of the mounting portion 12 in FIG.

  A large number of LED (light emitting diode) elements (not shown) are arranged in the light emitting portion 11 along the longitudinal direction thereof. Each LED element emits light when a DC voltage (forward voltage of a pn junction) is applied. Each LED element includes an LED made of a compound semiconductor and a phosphor formed on the light emitting surface. In each LED element, a single color (for example, blue) light emitted from a light emitting diode constituting the LED and a light (for example, yellow) emitted from a phosphor by absorbing this light are simultaneously mixed and emitted. White light emission is obtained. Further, the lower side of the surface on which the LED elements are arranged is covered with a substantially semi-cylindrical cover 111 that is elongated in the horizontal direction. The cover 111 plays a role of protecting the LED elements and the like and diffusing light emitted from the LED elements. In order to improve the heat dissipation characteristics of the LED element, the LED element is mounted on a substrate having high thermal conductivity.

  The DC voltage supplied to each LED element is supplied from the main body side power supply connector 13 provided in the mounting portion 12. This DC voltage is supplied in parallel to each LED element. For example, when some of the LED elements are no longer energized (when a failure occurs), a control circuit that performs appropriate control is also provided inside the lighting fixture body 10 so that other LED elements can operate normally. . In addition, in the conventional fluorescent lamp, pins are provided at both ends for fixing and energizing, whereas in the lighting fixture body 10, pins are not provided at both ends.

  On the other hand, as shown in FIG. 3A, the upper surface (chassis upper surface 21) of the chassis 20 is flat, and an upper surface opening 211, a chassis mounting opening 212, and the like are formed therein. By passing a fixing bolt or the like through the chassis mounting opening 212, the chassis upper surface 21 can be fixed to a flat ceiling in the house. At this time, the chassis 20 can be fixed to the ceiling in a state where the power line connected to the commercial power source is introduced into the chassis 20 through the upper surface opening 211.

  Side surfaces (chassis side surfaces 22, 23) in the longitudinal direction of the chassis 20 are formed perpendicular to the chassis upper surface 21 along both longitudinal sides of the chassis upper surface 21. Four side grooves 24 are formed in each of the chassis side faces 22 and 23. The side groove 24 has a bent shape. In FIG. 3A, a thick portion (side groove vertical portion 241) from the lower side (side opposite to the chassis upper surface 21) to the upper side of the chassis side surface 22 and the thick portion. It is comprised in the thin part (side groove horizontal part 242) which goes to a horizontal direction left side at the upper end part. As shown in FIG. 3B, not shown in FIG. 3A, the side groove 24 is similarly formed on the chassis side surface 23, and the side groove horizontal portion 242 extends. The direction is the same as the direction on the chassis side surface 22.

  Further, a chassis end surface 25 is provided on the right side of the chassis 20 in FIG. 3A (the side opposite to the direction in which the side groove horizontal portion 242 extends from the side groove vertical portion 241). The chassis end surface 25 is formed perpendicular to the chassis upper surface 21 along the right end side of the chassis upper surface 21. A chassis end face screw hole 251 is formed in the chassis end face 25. The inner surface of the chassis end face screw hole 251 is internally threaded. A structure in which the chassis upper surface 21, the chassis side surfaces 22 and 23, and the chassis end surface 25 having such a configuration are integrated can be easily manufactured by sheet metal processing or the like.

  As shown in FIG. 3B, a power supply circuit (power supply unit) 26 is fixed on the inner side (lower side) of the chassis upper surface 21. The power supply circuit 26 is connected to a power line of a commercial power supply (AC 100 V) led out through the upper surface opening 211 in the chassis 20. The power supply circuit 26 rectifies the alternating current and converts it into a direct current low voltage applied to the LED element, and drives the LED element with a constant current, for example. The circuit configuration is the same as that normally known. In the power supply circuit 26, a transformer, a rectifier circuit, and the like are sealed and integrated in a mold layer, and the power supply circuit 26 is heavy because the transformer is particularly heavy. The DC voltage generated by the power circuit 26 is connected to the chassis side power connector 27. When the chassis side power connector 27 is connected to the main body side power connector 13, the LED element can be energized to emit light.

  FIG. 4 is an enlarged view of the attachment portion 12 of the luminaire main body 10 in FIG. The shape of the attachment portion 12 corresponds to the chassis 20 described above. That is, the attachment portion side surfaces 121 and 122 in the attachment portion 12 are in contact with the chassis side surfaces 22 and 23 in the chassis 20, respectively, and the attachment portion end surface 123 in the attachment portion 12 is in contact with the chassis end surface 25 in the chassis 20 from outside. be able to.

  In FIG. 4, four claws 124 are formed on the upper side of the attachment portion side surface 121 so as to be inwardly perpendicular to the attachment portion side surface 121. The four claws 124 correspond to the side grooves 24 on the chassis side surface 22. The width of the claw 124 (width along the longitudinal direction of the light emitting portion 11) is narrower than the width of the side groove vertical portion 241 in the side groove 24, and the thickness thereof is the width of the side groove horizontal portion 242 in the side groove 24 (vertical). The width in the direction is slightly thinner. In this case, the attachment portion 12 can be moved so that the claw 124 moves in the side groove vertical portion 241 in the direction (upper side) indicated by the arrow I in FIG. Thereafter, when the claw 124 reaches the upper end portion of the side groove vertical portion 241, the mounting portion 12 (claw 124) is moved in the direction (left side) shown by the arrow II in FIG. Part 242 can be engaged. Thereby, the attaching part side surface 121 can be fixed to the chassis side surface 22. The relationship between the chassis side surface 23 and the attachment portion side surface 122 is the same. In this way, the attachment portion 12 is fixed to the chassis 20 by engaging the side surface groove (groove) 24 provided on one side surface of the chassis 20 with the claw 124 provided on one side surface of the attachment portion 12. Can do.

  Further, the attachment portion end surface 123 is set so as to contact the chassis end surface 25 in a state where the claw 124 is engaged with the side groove horizontal portion 242. Here, a mounting portion end surface screw hole 125 is formed in the mounting portion end surface 123 at a location corresponding to the chassis end surface screw hole 251 in the chassis end surface 25. For this reason, the attachment part end surface 123 can be fixed to the chassis end surface 25 by fixing the screw (screw) which penetrates the attachment part end surface screw hole 125 to the chassis end surface screw hole 251. Accordingly, the attachment portion 12 can be fixed to the chassis 20 with the attachment portion side surfaces 121 and 122 abutting the chassis side surfaces 22 and 23 from the outside and the attachment portion end surface 123 abutting the chassis end surface 25 from the outside, respectively. That is, the chassis end surface 25 that is a side surface that intersects the side surface in which the side surface groove 24 is formed in the chassis 20 and the mounting portion end surface 123 that is the side surface that intersects the side surface in which the claw 124 is formed in the mounting portion 12 are brought into contact. By fixing these using screws, the attachment portion 12 can be more firmly joined to the chassis 20.

  In addition, since there is no structure on the surface of the attachment end surface 123 and there is sufficient space, the screw used at this time can be tightened with bare hands without using a special tool. Screws or the like can be used. In this case, it is not necessary to use a tool for this fixing.

  With this configuration, in this lighting fixture, (1) the main body side power connector 13 in the mounting portion 12 in the lighting fixture main body 10 and the chassis side power connector 27 on the chassis 20 side are connected. The upper surface side and the lower surface side of the chassis 20 are brought into contact with each other. (3) Each claw 124 in the mounting portion 12 is placed in the side groove 24 corresponding to the chassis 20 side in the directions of arrows I and II in FIG. (4) The lighting fixture body 10 can be fixed to the chassis 20 by using the procedure of (4) fixing the screw penetrating the mounting portion end surface screw hole 125 to the chassis end surface screw hole 251. it can. Thereby, the LED element in the lighting fixture main body 10 can be light-emitted. In this configuration, the luminaire main body 10 is easily and firmly fixed to the chassis 20, and the LED elements in the luminaire main body 10 can emit light.

  Here, FIG. 5 shows a cross-sectional view in the AA direction when the luminaire body 10 is fixed to the chassis 20 (FIG. 1). This cross section is a cross section perpendicular to the longitudinal direction of the luminaire main body 10. In FIG. 5, there is a gap between the light emitting unit 11 in which many LED elements are arranged and the power supply circuit 26. As described above, in the LED lighting apparatus, both the LED element and the power supply circuit 26 are essential components, and both generate heat during operation. Both of these are deteriorated by heat. For this reason, it is preferable to separate the LED element and the power supply circuit 26 during operation. In this respect, the configuration of FIG. 5 is preferable because there is a gap between the light emitting unit 11 (LED element) and the power supply circuit 26. Such a configuration can be realized by separating the luminaire main body 10 and the chassis 20 and installing the power supply circuit 26 on the chassis 20 side. In addition, the user directly handles the luminaire main body 10 during assembly, and the heavy power supply circuit 26 is not included therein. For this reason, handling of the lighting fixture main body 10 is easy.

  Further, the chassis-side power connector 27 and the main body-side power connector 13 are accommodated in this space. In the above procedures (1) to (4), it is easy to realize this state.

  That is, in this lighting fixture, its installation is easy and the influence of heat generation can be reduced.

  In the above example, the side surface groove (groove) 24 is provided on the chassis 20 side, the claw 124 is provided on the attachment portion 12 side, and the attachment portion 12 (the luminaire main body 10) is attached to the chassis 20 by engaging them. It was fixed. However, these may be reversed, that is, a claw may be provided on the chassis side, a groove may be formed on the attachment portion side, and the attachment portion may be fixed to the chassis by engaging them. Alternatively, as long as the attachment portion can be fixed to the chassis, these configurations are arbitrary.

  Further, if the fixing strength by the engagement between the claw and the groove is sufficient, it is not necessary to fix the mounting portion end surface and the chassis end surface with screws. In this case, the installation becomes easier. Even in such a case, in the above configuration, a particularly heavy power supply unit (power supply circuit) is installed in a chassis fixed in advance to the ceiling and does not exist in a luminaire main body to be attached later. This increases the reliability.

  In the above example, the chassis-side power connector and the main body-side power connector are used to connect the power supply circuit (power supply unit) and the LED elements in the light emitting unit, but this connection method is also arbitrary.

  In the above example, the upper surface 21 of the chassis 20 is fixed to the ceiling of the house, and the light emitting unit 11 is provided on the lower side. However, this form is arbitrary. For example, these can be installed on a wall extending in the vertical direction.

  Moreover, the shape of a chassis, a mounting part, and a light emission part is arbitrary as long as said structure is realizable.

DESCRIPTION OF SYMBOLS 10 Lighting fixture main body 11 Light emission part 12 Attachment part 13 Main body side power supply connector 20 Chassis 21 Chassis upper surface (upper surface)
22, 23 Chassis side surface 24 Side surface groove (groove)
25 Chassis end face 26 Power supply circuit (Power supply part)
27 Chassis-side power connector 111 Cover 121, 122 Mounting portion side surface 123 Mounting portion end surface 124 Claw 125 Mounting portion end surface screw hole 211 Upper surface opening 212 Chassis mounting opening 241 Side groove vertical portion 242 Side groove horizontal portion 251 Chassis end surface screw hole

Claims (5)

A light fixture that uses a light emitting unit that houses a light emitting diode element and a power supply unit that converts an alternating voltage into a direct current voltage used to drive the light emitting diode element,
A chassis in which the upper surface is fixed to the house and is installed in the house, and the power supply unit is fixed to the opposite side of the house on the upper surface;
The mounting part fixed to the chassis at the time of use and the light emitting part are integrated, and the lighting fixture main body not having the power supply part,
Comprising
A lighting fixture, wherein a gap is formed between the light emitting unit and the power supply unit when the attachment unit is fixed to the chassis. In the chassis, a chassis-side power connector is led out from the power supply unit,
In the luminaire main body, a main body side power connector connected to the electrode of the light emitting diode element is derived,
2. The structure according to claim 1, wherein when the attachment portion is fixed to the chassis, the chassis-side power connector and the body-side power connector are accommodated and connected in the gap. lighting equipment.   The chassis and the attachment portion are fixed by engaging one of the claws and grooves provided in the chassis and the other of the claws and grooves provided in the attachment portion. The lighting fixture according to claim 1 or 2, characterized in that   The said nail | claw and a groove | channel are provided in one side surface of the said chassis and the said attaching part, and the side surfaces which cross | intersect the said one side surface in the said chassis and the said attaching part are fixed with the screw. lighting equipment.   The said upper surface is fixed to the ceiling of the said house, The lighting fixture of any one of Claim 1- Claim 4 characterized by the above-mentioned.

Images