KR101384955B1 - Luminaire - Google Patents

Abstract

A lighting apparatus capable of suppressing mutual interference between a light emitting element in a light source unit and a circuit component in a lighting device.
The present invention has an attaching portion 5 for attaching to the mechanism attaching surface C, and a plurality of light emitting elements 22 serving as light sources disposed around the attaching portion 5, and the light emitting elements 22 are provided. The light source part 2 in which the light emitted from the light source is directed toward the front side and the light source part 2 are turned on and controlled, and a circuit part 32 disposed inside the light emitting element 22 around the attachment part 5. Is a lighting device having a lighting device (3) arranged at a rear side of the light source unit (2) with a distance d.

Description

Luminaires {LUMINAIRE}

Embodiment of this invention relates to the lighting fixture using light emitting elements, such as LED, as a light source.

In recent years, with the high output, high efficiency, and widespread use of LED, the lighting fixture which can expect the long life to be used indoors or outdoors using LED as a light source is developed.

For example, in a luminaire for a general house, an adapter is electrically and mechanically connected to a hanging sealing body provided on an appliance attachment surface such as a ceiling surface, and the appliance body has a light source portion having an LED as a light source. Is to be attached. In such a lighting apparatus, indoor lighting is performed by light irradiated from a light source unit.

On the other hand, light-emitting elements such as LEDs generate heat by lighting, and as the temperature thereof rises, the output of light decreases, and the useful life thereof is also shortened. For this reason, in the lighting fixture which uses solid light emitting elements, such as LED and an EL element as a light source, in order to increase the useful life or to improve characteristics, such as luminous efficiency, it is necessary to suppress that the temperature of a light emitting element rises. .

In addition, the lighting device is provided with a lighting device connected to the light source unit. This lighting device includes a circuit component, and has a function of supplying power to the light source unit and controlling lighting of the light emitting element.

 LED ceiling light: Sharp [July 22, 23 Internet search] (http://www.sharp.co.jp/led_lighting/ceiling/)

However, in the above lighting fixture, the heat generated from the light emitting element in the light source unit and the heat generated from the heat generating parts such as the semiconductor component and the resistance element among the circuit components in the lighting apparatus interfere with each other, And excessive temperature rise of circuit components.

This invention is made | formed in view of the said subject, and an object of this invention is to provide the lighting fixture which can suppress mutual interference with the light emitting element in a light source part, and the circuit component in a lighting device.

The lighting fixture by embodiment of this invention is provided with the attachment part for attaching to a fixture attachment surface.

The light source unit has a plurality of light emitting elements arranged as a light source disposed around the attachment portion, and the light emitted from the light emitting element is directed toward the front side, and the light source portion is controlled to be turned on, and the light emission is generated around the attachment portion. A lighting device having a circuit component arranged inside the device and having a separation distance on the rear side of the light source portion is provided.

According to embodiment of this invention, it becomes possible to provide the lighting fixture which can suppress mutual interference between the light emitting element in a light source part, and the circuit component in a lighting device.

1 is a perspective view showing a lighting device according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the front side showing the luminaire.
It is an exploded perspective view of the back side which shows the said lighting fixture.
4 is a plan view of the shade and light source cover removed.
It is a perspective view of the back side which shows the said lighting fixture.
6 is a longitudinal sectional view showing the luminaire.
7 is a plan view showing the positional relationship between the light source unit and the lighting device.
8 is a cross-sectional view showing a state in which the lighting fixture is attached to the ceiling surface.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to FIGS. 1-6, 8 have shown the lighting fixture, and FIG. 7 has shown the light source part and the lighting device. In each figure, the wiring connection relationship by a lead wire etc. is abbreviate | omitted and shown. The same parts are denoted by the same reference numerals, and redundant description is omitted.

The lighting fixture of the present embodiment is for a general house which is used by being attached to a phosphorus sealing body as a wiring mechanism provided on an appliance attachment surface, and is caused by light emitted from a light source unit having a plurality of light emitting elements mounted on a substrate. It is to illuminate the room.

The lighting apparatus is provided with the apparatus main body 1, the light source part 2, the lighting device 3, and the center member 4. As shown in FIG. In addition, the lighting apparatus includes an attachment portion 5, an optical sensor 6, a shade 7, a cover member 8, an indirect light source 9, and an elastic member 10. . Moreover, the adapter A which is electrically and mechanically connected to the clamping sealing body Cb provided in the ceiling surface C as a mechanism attachment surface is provided (refer FIG. 8). Such a lighting fixture is formed in a circular circular appearance, and the front side is used as the irradiation surface of light, and the back side is used as the attachment surface to the ceiling surface (C). These components will be described in turn.

As shown in FIGS. 2-6, the mechanism main body 1 is a chassis which has the heat conductivity formed circularly from the flat plate of metal materials, such as a cold rolled steel plate, and is the attachment part 5 mentioned later in a substantially central part. A circular opening 11 is formed. A part of the circular shape protrudes outward and the opening 11 is formed in a shape substantially the same as that of the attachment portion 5.

On the outer circumferential side of the opening 11, a corner portion has an R shape in a rectangular shape, and a protrusion 12 protruding toward the back side is formed. In addition, on the outer circumferential side of the protrusion 12, a circular ring-shaped protrusion 13 protruding toward the front side is formed. In addition, on the outer circumferential side of the protruding portion 13, a protruding portion 14 having a circular ring shape is formed to protrude to the rear side so as to continue in the radial direction with the protruding portion 13, in other words, to form a concave portion on the front side.

A shade receiving bracket 75 to which the shade 7 is detachably attached is disposed in the recess formed by the protrusion 14. These protrusions 12, 13 and 14 function mainly as attachment portions of members attached to the chassis, and also have a function of reinforcing the strength of the chassis and a function of increasing the heat dissipation area.

In addition, although the chassis corresponds in this embodiment, the main body 1 may be called a case, a reflecting plate, or a base. Generally, it means the member or part in which the light source part 2 is arrange | positioned directly or indirectly, and is not interpreted in particular limitedly.

As shown in FIG. 2, FIG. 4, FIG. 6, and FIG. 8, the light source part 2 is equipped with the board | substrate 21 and the some light emitting element 22 mounted in this board | substrate 21. As shown in FIG. The board | substrate 21 is arrange | positioned so that the four board | substrates 21 of circular arc shape which may have predetermined width dimension may be joined together, and are formed in substantially circle shape as a whole. That is, the board | substrate 21 formed in the substantially circle shape as a whole is comprised from four board | substrates 21 divided.

By using the board | substrate 21 divided in this way, thermal contraction can be absorbed in the division part of the board | substrate 21, and the deformation | transformation of the board | substrate 21 can be suppressed. On the other hand, although it is preferable to use the board | substrate 21 divided into several, you may use one board | substrate integrally formed in substantially circle shape.

The board | substrate 21 consists of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and the wiring pattern is formed in the surface side by copper foil. The light emitting element 22 is electrically connected to the wiring pattern. In addition, a white resist layer serving as a reflective layer is provided on the wiring pattern, that is, on the surface of the substrate 21.

On the other hand, when the substrate 21 is made of an insulating material, a ceramics material or a synthetic resin material can be used. In addition, in the case of a metal, a metal base substrate having an insulating layer laminated on one surface of a base plate having good thermal conductivity and excellent heat dissipation such as aluminum can be used.

The light emitting element 22 is an LED and is a surface mount type LED package. The LED package is mounted along a circumferential direction of the plurality of circle-shaped substrates 21 in three rows, in this embodiment, on three circumferences of the circumference of substantially concentric circles having different radii. That is, it is mounted over the row on the inner circumference side, the row on the outer circumference side, and the middle row between the row on the inner circumference side and the row on the outer circumference side.

The LED package is roughly composed of an LED chip disposed in a cavity formed of ceramics or synthetic resin, and a light transmitting resin for a mold such as an epoxy resin or a silicone resin for sealing the LED chip.

In the LED package mounted in the inner circumferential side column and the outer circumferential side column, light emitting colors of primary white (N) and light bulb color (L) are used, and these are arranged approximately alternately at equal intervals on the circumference. Are arranged. An LED chip is an LED chip which emits blue light. Phosphor is mixed in the translucent resin, and in order to be able to emit the light of the main white (N) and the bulb color (L) white, mainly emits yellow light having a complementary relationship with blue light A yellow phosphor is used.

In the LED package mounted in the intermediate column, light emitting in red (R), green (G), and blue (B) is used. Therefore, LED chips are LED chips which emit red, green, and blue light, respectively, and these LED chips are sealed by a light transmitting resin for a mold.

These LED packages emitting red (R), green (G), and blue (B) are arranged at approximately equal intervals consecutively with red (R), green (G), and blue (B) on the circumference in turn. It is.

On the other hand, the arrangement of red (R), green (G), and blue (B) in the LED package may not be specified and the order may not be the same. For example, green (G), red (R), and blue You may arrange in the order of (B). In addition, although it is preferable to arrange | position the thing of another light emitting color, the adjacent LED package is not specifically limited. As an example, it is also possible to arrange | position two same color continuously like red (R), red (R), green (G), green (G), blue (B), and blue (B).

In this way, a plurality of light emitting elements 22 are arranged on the periphery of the concentric circles having different radii, and emit light in the main white color (N) and the bulb color (L). As a phase, a plurality of light emission which emits light in red (R), green (G), and blue (B) by making heat between the columns of the light emitting element 22 which light-emits the main white (N) and the bulb color (L) The element 22 is arrange | positioned.

Therefore, a plurality of light emitting elements 22 having different light emitting colors, that is, light emitting elements 22 emitting light in primary white (N), bulb color (L) red (R), green (G), and blue (B) are arranged. Therefore, the range of light colors that can be expressed by these converging is wide, and the color of light can be appropriately adjusted by adjusting the output of the light emitting element 22.

In addition, LED may be made to mount an LED chip directly to the board | substrate 21, and may mount a shell type LED, and a mounting method and a form are not specifically limited.

As shown in FIG. 4 and FIG. 6, the light source part 2 comprised in this way is the periphery of the opening 11 as the front surface side of the main body 1, in other words, the attachment part (described later) ( It is located around 5), and the mounting surface of the light emitting element 22 is arrange | positioned facing the front side, ie, the downward irradiation direction. In addition, it is fixed by fixing means, such as a screw, so that the back surface side of the board | substrate 21 may adhere to the inner surface side of the main body 1, for example. Therefore, the board | substrate 21 is thermally coupled with the main body 1, and the heat from the board | substrate 21 is conducted to the main body 1 from the back surface side, and is radiated | emitted.

In addition, even if the board | substrate 21 is directly attached to the main body 1 and arrange | positioned, it may be a case where it is indirectly attached and arrange | positioned through the other member, The arrangement form is not specifically limited.

As shown in FIG.2 and FIG.6, the light source part cover 25 is arrange | positioned at the front surface side of the light source part 2. As shown in FIG. The light source part cover 25 is made of a transparent synthetic resin having an insulating property such as polycarbonate or acrylic resin, for example, and is integrally formed in a substantially circle shape along the arrangement of the light emitting element 22. It is arrange | positioned so that the whole surface of the board | substrate 21 may be included including 22.

Therefore, the light emitted from the light emitting element 22 is transmitted through the light source part cover 25. Moreover, since the whole surface of the board | substrate 21 is covered, the charging part is covered by the light source part cover 25, and insulation is ensured. In addition, since the light source part cover 25 is attached by screwing in contact with the main body 1, heat from the main body 1 is conducted to radiate heat.

The lighting device 3 includes a circuit board 31 and a circuit component 32 mounted on the circuit board 31, as shown in FIGS. 3, 6, and 7. The circuit board 31 is formed in a substantially rectangular shape from a glass epoxy resin (FR-4) or the like, and a portion 31a cut off at the center portion is formed. This cut-out part 31a forms circular shape, and is cut | disconnected and formed continuously so that one part may protrude outward. This cut off part 31a is a part through which the attachment part 5 mentioned later is inserted.

Therefore, the circuit board 31 is formed in a plate shape so as to surround the periphery of the center portion, and the circuit component 32 is mounted on the surface side thereof. Specifically, the circuit board 31 is mounted around the portion 31a cut out of the circuit component 32 necessary for lighting control of the light emitting element 22. For example, a control IC and a resistor are provided. Elements, transformers, switching transistors, constant voltage diodes, full-wave rectifiers and capacitors are mounted.

In the vicinity of the cut-out portion 31a, a heat generating part 32H having a relatively large heat generation amount such as a control IC, a resistance element, a transformer, or the like is mainly mounted in the circuit part 32, and relatively on the outer circumferential side. Circuit components with a small amount of heat generation are mounted.

The adapter A side is electrically connected to the circuit board 31 and connected to a commercial AC power supply with the adapter A interposed therebetween. Therefore, the lighting device 3 receives this AC power, generates a DC output, supplies the DC output to the light emitting element 22 through a lead wire, and controls the light emitting element 22 to be lit.

Such a lighting device 3 is attached to and covered with the lighting device cover 35 and is disposed on the back side of the main body 1. In this case, the circuit board 31 is attached with the circuit component 32 facing the front side (in the lower side, in the illustration).

The lighting device cover 35 is formed into a substantially rectangular short cylindrical shape by a metal material such as a cold rolled steel sheet, and the side wall 35a has an inclined shape so as to extend toward the front side, and the rear wall The opening 35c is formed in the center part of 35b.

3, 5, and 6, the lighting device cover 35 is mounted on the protrusion 12 of the chassis, which is the main body 1, with the flange on the front side, and screwed and thermally. It is installed in combination.

As shown in Figs. 2, 4 and 6, the center member 4 is made of synthetic resin material such as PBT resin, is formed in a substantially short cylindrical shape, and is opposed to the phosphorus sealing body Cb at the center. It has an opening 41. Moreover, the annular space part 42 is formed in the circumference | surroundings of the opening 41, and the optical sensor 6 mentioned later is arrange | positioned in this space part 42. As shown in FIG. In addition, a light receiving window 43 facing the light receiving portion of the optical sensor 6 is formed on the front wall of the center member 4.

As shown in FIG. 6, the center member 4 comprised in this way is screwed to and attached to the chassis by the back side flange with the light source part cover 25 in between. On the other hand, the center member 4 can be attached directly or indirectly to the chassis, and the specific attachment structure is not limited.

The attachment part 5 is an adapter guide, is a member which the adapter A inserts and engages, and is a member for attaching a luminaire to the ceiling surface C. As shown in FIG. As shown in FIG. 3 and FIG. 6, the adapter guide is formed in a substantially cylindrical shape, and an engagement hole 51 through which the adapter A is inserted and engaged is provided in the center portion. This adapter guide is arrange | positioned corresponding to the opening 11 formed in the center part of the main body 1. As shown in FIG.

In addition, the attachment part 5 does not necessarily need to be a member called an adapter guide or the like. For example, it may be an opening formed in the main body 1 or the like, and the main point is a member or a portion to which the adapter A is engaged, as opposed to the pinched sealing body Cb as the wiring mechanism.

As shown in FIG. 6, the optical sensor 6 is an illuminance sensor and consists of sensor elements, such as a photodiode, and operates to detect the brightness of an environment, and to output a detection signal. As a result, when the surroundings are bright, the light source unit 2, that is, the light emitting element 22 is controlled to be illuminated by dimming (dimming) the light.

 The optical sensor 6 is mounted on a substrate, and is arranged and attached to the space 42 of the center member 4 so that the light receiving portion faces the light receiving window 43.

The shade 7 is formed of a material having a light-transmitting property such as an acrylic resin and having a milky white diffusivity and is formed in a substantially circular shape, and a circular opening 71 is formed in the center portion. Moreover, the shade crease 7a is affixed to the outer peripheral part of the shade 7, This shade crease 7a is formed of the transparent material which consists of acrylic resins.

And the shade 7 is detachably attached to the outer peripheral edge part of the main body 1 so that the front surface side of the main body 1 containing the light source part 2 may be covered. Specifically, by rotating the shade 7, the shade receiving bracket 75 formed in the recess formed by the protrusion 14 of the main body 1 includes the shade-attached bracket 74 provided in the shade 7. Is attached by engaging in.

In addition, when removing the shade 7, it rotates in the opposite direction to the case where the shade 7 is attached, and it loosens by loosening the engagement of the shade attachment bracket 74 and the shade receiving bracket 75. I can make it.

On the other hand, the shade 7 is preferably configured to be detachably attached to the outer peripheral edge portion of the main body 1, but may be configured to be fixed to the main body 1 by fixing means such as a screw. It is because in the lighting fixture which can expect long life using the light emitting element 22 as a light source, there is little need to replace a light source or to clean the inside for maintenance.

The distance between the light source part cover 25 and the shade 7 is set to 20 to 60 mm, preferably 30 to 50 mm. Thereby, the balance of irradiation light becomes favorable, and the heat | fever transmitted from the main body 1 to the light source part cover 25 is effectively radiated | emitted via the shade 7.

In addition, a polyolefin sheet or the like having thermal conductivity may be attached to the inner surface side of the shade 7. In this case, it becomes possible to improve the heat dissipation from the shade 7.

The cover member 8 is formed in circular shape from materials, such as a transparent acrylic resin, as shown to FIG. 2 and FIG. The cover member 8 is attached to the front wall of the center member 4 in correspondence with the opening 71 of the shade 7 so as to cover and close the opening 41 of the center member 4. The cover member 8 is formed with a circular transmissive portion 81 facing the light receiving window 43 of the optical sensor 6.

On the other hand, it is preferable to stick an opaque film material or the like on the front side of the cover member 8, leaving at least the transmissive portion 81.

The indirect light source unit 9 is disposed on the back side of the main body 1 and mainly has a function to brighten the ceiling surface. As shown in FIG. 3, FIG. 5, and FIG. 6, the indirect light source part 9 is arrange | positioned in the circumference | surroundings of the attachment part 5, and is arrange | positioned in multiple numbers, and is mounted in the board | substrate 91 and this board | substrate 91. FIG. A plurality of light emitting elements 92 are provided.

 The board | substrate 91 is formed in the substantially rectangular flat plate, and the light emitting element 92 is mounted in linear form along the longitudinal direction of this board | substrate 91.

The substrate 91 on which the light emitting element 92 is mounted is attached to four places on the side wall 35a of the lighting device cover 35. In this case, since the lighting device cover 35 is formed in substantially rectangular shape, and the board | substrate 91 is attached to the linear flat surface in the side wall 35a, attachment is performed stably.

In addition, since the side wall 35a which forms the attachment part of the board | substrate 91 is formed in the inclined shape extended toward a front surface side, the board | substrate 91 is inclined upwards, ie, it is directed to a ceiling surface direction, and light-emissions Light emitted from the element 92 is effectively irradiated toward the ceiling surface direction.

In addition, each of the indirect light source sections 9 is covered with a box-shaped translucent cover 93.

The light emitting element 92 is an LED and is a surface mount type LED package like the light source unit 2 described above. The light emitting element 92 is connected to the lighting device 3 so as to control lighting.

The elastic member 10 is attached in the vicinity of the attachment position of each of the plurality of indirect light source units 9. The elastic member 10 is a member arrange | positioned so that it may interpose with the ceiling surface C in the state in which the luminaire was attached to the ceiling surface C as a fixture attachment surface (refer FIG. 8).

Specifically, the elastic member 10 is a metal spring member made of a material such as stainless steel, and is attached to the back side of the lighting device cover 35 corresponding to the attachment position of each indirect light source unit 9. . The elastic member 10 is formed by bending a horizontally long rectangular leaf spring, and has a fixing portion 10a in the center thereof, and is enlarged inclined from both sides of the fixing portion 10a upwardly (back side). The extended part 10b is formed so that it may be formed, and the contact part 10c which formed the square shape is formed in the front end side.

In addition, a screw through hole is formed in the fixing portion 10a, and the elastic member 10 is formed by an attachment screw that penetrates the screw through hole and is screwed into the back side of the lighting device cover 35. It is fixed to the back side of the lighting device cover 35.

A plurality of such elastic members 10, that is, all four have the same form and have the same elastic force are used.

In the fixed state of the elastic member 10, as shown in FIG. 6, the elastic member 10 arrange | positioned at the back side of the lighting device cover 35 points the fixed part 10a. As a result, elastic deformation is possible with the spring action in the front direction (the direction of the arrow shown).

As shown in Fig. 8, the adapter A is electrically and mechanically connected to the hanging handle body Cb provided on the ceiling surface C by a hanging blade provided on the upper surface side, and forms an approximately cylindrical shape. On both sides of the circumferential wall, a pair of locking portions A1 are provided so as to protrude to the outer circumferential side at all times by the built-in spring. The stopping portion A1 is immersed by operating a lever provided on the lower surface side. Moreover, the power supply cord which is not shown in figure which connects to the said lighting device 3 is derived from this adapter A, and is connected between the lighting device 3 and a connector.

In the luminaire configured as described above, an arrangement relationship between the light source unit 2 and the lighting device 3 will be described with reference to FIGS. 4, 6, and 7. 7 is explanatory drawing which showed the positional relationship of the light source part 2 and the lighting device 3 in plan view.

The light source unit 2 includes a plurality of light emitting elements 22 mounted on a circumference of a substantially circle-shaped substrate 21. And the back surface side is thermally coupled to the main body 1, and this board | substrate 21 is attached. Therefore, these light emitting elements 22 are arrange | positioned around the attachment part 5, Specifically, as shown mainly in FIG. 4 and FIG. 7, the planar view of the attachment part 5 It is arranged so as to surround the circumference.

On the other hand, as shown in FIG. 6, the lighting device 3 is arrange | positioned at the back side of the main body 1, The light source part 2 has a clearance distance d in the back direction, and is attached to the lighting device cover 35. As shown in FIG. Attached. In addition, the circuit component 32 is arranged so as to surround the periphery of the attachment portion 5 through which the cut-out portion 31a of the circuit board 31 is inserted, and as shown in FIG. It is located inside the plurality of light emitting elements 22 listed above.

In the vicinity of the attachment portion 5, the heat generating part 32H having a relatively high heat generation amount is disposed in the circuit part 32.

Therefore, the light emitting element 22 in the light source unit 2 and the circuit component 32 in the lighting device 3 are positioned with a distance d in the back direction, and the circuit component 32 is It is located inside the light emitting element 22. That is, the light emitting element 22 and the circuit component 32 are shift | deviated and arrange | positioned with respect to both a vertical direction (front back direction) and a horizontal direction (radius direction). In the circuit component 32, the heat generating component 32H is disposed away from the light emitting element 22.

For this reason, the light emitting element 22 and the circuit component 32 are arrange | positioned thermally and can mutually suppress the thermal interference of the heat which generate | occur | produces from the light emitting element 22 and the circuit component 32. FIG.

In addition, since the light emitting element 22 and the circuit component 32 are arrange | positioned around the attachment part 5 as the center, it can be comprised compactly. In addition, since the lighting device 3 is disposed on the back side of the main body 1, it is possible to ensure a predetermined light distribution range without narrowing the range of light emitted from the light source unit 2.

Next, the attachment state to the ceiling surface C of the luminaire is demonstrated with reference to FIG. First, the adapter A is electrically and mechanically connected to the hanging guard body Cb, which is provided on the ceiling surface C in advance. While the cover member 8 of the luminaire is removed, the fitting portion A1 of the adapter A is engaged with the fitting guide (1) of the adapter guide while aligning the fitting opening 51 of the adapter guide with the adapter A. The attachment operation is performed by pushing the mechanism main body 1 against the elastic force of the elastic member 10 by hand from below, until it firmly engages with 51).

Subsequently, the cover member 8 is attached, and the opening 41 of the center portion of the center member 4 opposite to the hanging sealing body Cb is covered and closed.

In this state, the elastic member 10 is elastically deformed, and the contact portion 10c is elastically in contact with the ceiling surface C. As shown in FIG. And the contact part 10c becomes able to contact with the ceiling surface C substantially planarly parallel, or a front end part only a little direction to a perpendicular direction.

Therefore, the elastic member 10 is interposed between the back side of the lighting device cover 35, which is the back side of the apparatus main body 1, and the ceiling surface C with elastic deformation in the compression direction, and the lighting fixture The main body 1 is secured to the ceiling surface C by the spring action of the elastic member 10, and is in the state attached.

In more detail, by the action of the elastic member 10, the distance between the ceiling surface C and each indirect light source unit 9 can be kept constant, and the light irradiated from each indirect light source unit 9 The exit angle of can be made constant. As a result, the light distribution characteristics can be stabilized, and the ceiling surface C can be effectively irradiated and indirect illumination can be performed. In addition, since the elastic member 10 corresponds to each of the indirect light source units 9 and is disposed in the vicinity thereof, the interval between the ceiling surface C and each of the indirect light source units 9 becomes more certain. You can expect the effect.

In addition, when removing a lighting fixture, the cover member 8 is removed, and the lever A provided in the adapter A is operated through the opening 41 of the center member 4, and the adapter A is stopped. It can be detached by loosening the engagement of the part A1.

When electric power is supplied to the lighting device 3 in the attachment state to the ceiling surface C of the luminaire, it is energized to the light emitting element 22 via the board | substrate 21 in the light source part 2, and each The light emitting element 22 lights up. Light emitted from the light emitting element 22 to the front side passes through the light source part cover 25, diffuses and passes through the shade 7, and is radiated outward. Therefore, downward is illuminated in the predetermined light distribution range.

At the same time, when the indirect light source unit 9 is energized, each light emitting element 92 is turned on, and light emitted upwardly obliquely from the light emitting element 92 is transmitted through the translucent cover 93. It is mainly irradiated to the ceiling surface so as to radiate from the circumference of the adapter guide 5. Therefore, the ceiling surface becomes bright, and the bright feeling of space can be improved.

In this case, the light distribution characteristic of the light irradiated from the indirect light source unit 9 can be stabilized and effective indirect lighting can be performed.

When the light emitting element 22 is used as the light source in the light source unit 2 as described above, since the light emitted from the light emitting element 22 has a strong directivity, the light distribution range tends to be narrowed. By providing the indirect light source part 9 on the back side of (1), the bright feeling of space can be improved. Therefore, providing the indirect light source unit 9 becomes an effective means when the light source of the light source unit 2 is the light emitting element 22.

In addition, the lighting state of these light source part 2 and the indirect light source part 9 is controlled by the optical sensor 6 which detects surrounding brightness and outputs a detection signal.

Since the heat generated from the light emitting element 22 is thermally coupled to the main body 1 on the back surface side of the substrate 21, the heat is effectively conducted to the main body 1 and radiated to a large area. In addition, since the protrusions 12, 13, and 14 are formed in the main body 1, the heat dissipation area can be increased, and the heat dissipation effect can be further enhanced.

 In addition, since the lighting device cover 35 is attached to and attached to the protrusion 12 of the main body 1, heat is conducted from the main body 1 to the lighting device cover 35 to promote heat dissipation.

On the other hand, heat generated from the lighting device 3 is mainly radiated by convection in the space in the lighting device cover 35.

In this case, since the light emitting element 22 and the circuit component 32 are positioned with the distance d in the back direction, and the circuit component 32 is located inside the light emitting element 22, It is arrange | positioned so that a mutual interference can be suppressed. Therefore, excessive temperature rise of the light emitting element 22 and the circuit component 32 can be suppressed.

In addition, since the heat generating component 32H in the circuit component 32 is disposed away from the light emitting element 22, mutual thermal interference can be further effectively suppressed.

In addition, heat generated from the light emitting element 92 of the indirect light source unit 9 is conducted from the rear surface side of the substrate 91 to the side wall 35a of the lighting device cover 35, and furthermore, the elastic member 10. It is transmitted to and radiates heat.

As mentioned above, according to this embodiment, it becomes possible to provide the lighting fixture which can suppress mutual interference between the light emitting element in a light source part, and the circuit component in a lighting device.

In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary of invention. In addition, the said embodiment is shown as an example and is not intended to limit the scope of invention.

1: the main body of the mechanism (chassis)
2:
3: Lighting device
4: Center member
5: Attachment part (adapter guide)
6: light sensor
7: shade
8: Cover member
9: indirect light source
10: elastic member
21: substrate
22: Light emitting device (LED)
25: light source cover
31: substrate of lighting device
32: circuit components
32H: Heating element
35: lighting device cover
A: Adapter
C: Instrument mounting surface (ceiling surface)
Cb: Wiring Mechanism (Plumbing Sealing Body)
d: separation distance

Claims (3)

An instrument body having an attachment portion for attachment to the instrument attachment surface;
A light source portion having a plurality of light emitting elements serving as light sources arranged around the front side of the main body of the mechanism, wherein light emitted from the light emitting elements is directed to the front side;
A lighting device which controls lighting of the light source part and is disposed inside the inner part surrounded by the light emitting element around the attachment part and covered by a lighting device cover on the rear side of the main body of the apparatus, with a separation distance in the rear side direction of the main body of the apparatus; Lighting fixture comprising a. The illuminating device according to claim 1, wherein the light source portion is disposed on the front side of the chassis having thermal conductivity, and the lighting device is disposed on the back side of the chassis. The lighting device according to claim 1 or 2, wherein at least one of the control IC, the resistance element, and the transformer among the circuit components in the lighting device is arranged near the attachment portion.

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