JP6948022B2 - lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a luminaire that uses a light emitting element such as an LED as a light source.

Recently, with the increase in output, efficiency and widespread use of LEDs, lighting fixtures that use LEDs as a light source and are expected to have a long life indoors or outdoors have been developed.

For example, in a lighting fixture for a general house, an adapter is electrically and mechanically connected to a hook ceiling body installed on a fixture mounting surface such as a ceiling surface, and the adapter has a light source unit using an LED as a light source. The instrument body can be attached. In such a lighting fixture, the room is illuminated by the light emitted from the light source unit.

On the other hand, a light emitting element such as an LED generates heat by lighting, and as the temperature rises, the output of light decreases and the service life also shortens. Therefore, for a lighting fixture that uses a solid-state light emitting element such as an LED or an EL element as a light source, the temperature of the light emitting element is suppressed from rising in order to extend the service life and improve characteristics such as luminous efficiency. It is necessary.

Further, the lighting equipment is provided with a lighting device connected to the light source unit. This lighting device includes circuit components and has a function of supplying power to the light source unit to control lighting of the light emitting element.

LED Ceiling Light: Sharp [Search the Internet on July 22, 2011] (http://www.sharp.co.jp/led_lighting/ceiling/)

An object of the present invention is to provide a lighting fixture that is effectively irradiated toward the ceiling surface.

The luminaire according to the embodiment of the present invention includes a main body and a light source unit having a plurality of light emitting elements and arranged on the front side of the main body so that the light emitted from the light emitting elements is directed to the front side. A lighting device that is arranged in a lighting device cover that protrudes to the back side of the main body and controls lighting of the light source element, and a lighting device that is outside the lighting device cover and outside the elastic member on the back side of the main body. A lighting fixture equipped with an indirect light source unit arranged to illuminate the ceiling surface, and the central portion on the back side is electrically and mechanically connected to a hook sealing body installed on the ceiling surface. NS.

According to the embodiment of the present invention, it is possible to provide a lighting fixture that is effectively irradiated toward the ceiling surface.

It is a perspective view which shows the lighting equipment which concerns on embodiment of this invention. It is an exploded perspective view of the front side which shows the lighting fixture. It is an exploded perspective view of the back side which shows the lighting fixture. It is a top view which shows by removing the shade and the cover of a light source part in the luminaire. It is a perspective view of the back side which shows the lighting fixture. It is a vertical cross-sectional view which shows the lighting fixture. It is a top view which shows the positional relationship between a light source part and a lighting device. It is sectional drawing which shows the state which the luminaire is attached to the ceiling surface.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8. 1 to 6 and 8 show a lighting fixture, and FIG. 7 shows a light source unit and a lighting device. In each figure, the wiring connection relationship by the lead wire or the like is omitted. The same parts are designated by the same reference numerals, and duplicate description will be omitted.

The lighting fixture of the present embodiment is for a general house used by being attached to a hook ceiling body as a wiring fixture installed on the fixture mounting surface, and is a light source having a plurality of light emitting elements mounted on a substrate. The room is illuminated by the light radiated from the part.

The lighting fixture includes a fixture main body 1, a light source unit 2, a lighting device 3, and a center member 4. Further, the luminaire includes a mounting portion 5, an optical sensor 6, a shade 7, a cover member 8, an indirect light source portion 9, and an elastic member 10. Further, the adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C as the fixture mounting surface (see FIG. 8). Such a luminaire is formed in a round circular appearance, and the front side is a light irradiation surface and the back side is a mounting surface to the ceiling surface C. These components will be described in sequence.

As shown in FIGS. 2 to 6, the appliance main body 1 is a chassis having thermal conductivity formed in a circular shape from a flat plate of a metal material such as a cold-rolled steel plate, and a mounting portion described later is substantially in the center. A circular opening 11 in which the 5 is arranged is formed. A part of the circular shape of the opening 11 projects outward and is formed in a shape substantially equal to the outer shape of the mounting portion 5.

On the outer peripheral side of the opening 11, a projecting portion 12 having a quadrangular shape with rounded corners and projecting to the back surface side is formed. Further, on the outer peripheral side of the projecting portion 12, a circular annular projecting portion 13 projecting to the front surface side is formed. Further, on the outer peripheral side of the projecting portion 13, a circular annular projecting portion 14 is formed so as to be continuous with the projecting portion 13 in the radial direction so as to project to the back surface side, in other words, to form a recess on the front surface side. ..

A shade receiving metal fitting 75 to which the shade 7 is detachably attached is arranged in the recess formed by the protrusion 14. These projecting portions 12, 13 and 14 mainly function as attachment portions for members to be 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 the present embodiment, the main body 1 corresponds to the chassis, but may be referred to as a case, a reflector, or a base. Generally, it means a member or a portion in which the light source portion 2 is directly or indirectly arranged, and is not interpreted in a particularly limited manner.

As shown in FIGS. 2, 4, 6 and 8, the light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21. The substrate 21 is arranged so that four arc-shaped substrates 21 having a predetermined width dimension are joined to each other, and is formed in a substantially circular shape as a whole. That is, the substrate 21 formed in a substantially circular shape as a whole is composed of four divided substrates 21.

By using the substrate 21 divided in this way, it is possible to absorb the thermal shrinkage at the divided portion of the substrate 21 and suppress the deformation of the substrate 21. It is preferable to use the substrate 21 divided into a plurality of parts, but it is also possible to use a single substrate integrally formed in a substantially circle shape.

The substrate 21 is made of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and a wiring pattern is formed by copper foil on the surface side. The light emitting element 22 is electrically connected to this wiring pattern. Further, a white resist layer that acts as a reflective layer is applied on the wiring pattern, that is, on the surface of the substrate 21.

When the material of the substrate 21 is an insulating material, a ceramic material or a synthetic resin material can be applied. Further, when it is made of metal, a metal base substrate such as aluminum having an insulating layer laminated on one surface of a base plate having good thermal conductivity and excellent heat dissipation can be applied.

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

The LED package is generally composed of an LED chip arranged in a cavity made of ceramics or synthetic resin, and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip. It is configured.

The LED packages mounted on the inner circumference side row and the outer circumference side row have a neutral white (N) emission color and a light bulb color (L), and these are on the circumference. They are arranged alternately at approximately equal intervals. The LED chip is an LED chip that emits blue light. A phosphor is mixed in the translucent resin, and in order to be able to emit white light of neutral white (N) and light bulb color (L), it is mainly in a complementary color relationship with blue light. A yellow phosphor that emits a certain yellowish light is used.

The LED packages mounted in the middle row are those that emit red (R), green (G), and blue (B). Therefore, the LED chips are LED chips that emit red, green, and blue light, respectively, and these LED chips are sealed with a translucent resin for molding.

These LED packages that emit light in red (R), green (G), and blue (B) are sequentially spaced on the circumference in order of red (R), green (G), and blue (B) at approximately equal intervals. It is placed in a vacant space.

The arrangement of red (R), green (G), and blue (B) in the LED package may not be specified and may be in any order. For example, the arrangement of green (G), red (R), and blue (B) may be arranged in this order. You may. Further, it is preferable to arrange the adjacent LED packages having different emission colors, but the LED packages are not particularly limited. As an example, it is also possible to arrange two of the same color continuously, such as red (R), red (R), green (G), green (G), blue (B), and blue (B). be.

In this way, a plurality of light emitting elements 22 that emit light in neutral white (N) and light bulb color (L) are arranged in a row on the circumference of substantially concentric circles having different radii, and the circle having substantially the same center as the circle. A plurality of light emitting elements 22 that emit light in neutral white (N) and light bulb color (L) on the circumference and emit light in red (R), green (G), and blue (B) in a row. The light emitting element 22 of the above is arranged.

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

As for the LED, the LED chip may be mounted directly on the substrate 21, or a bullet-shaped LED may be mounted, and the mounting method and format are not particularly limited.

In the light source unit 2 configured in this way, as represented by FIGS. 4 and 6, the substrate 21 is on the front side of the main body 1 and is around the opening 11, in other words, the mounting portion 5 described later. Located on the periphery, the mounting surface of the light emitting element 22 is arranged so as to face the front side, that is, the lower irradiation direction. Further, the substrate 21 is attached by a fixing means such as a screw so that the back surface side of the substrate 21 is in close contact with the inner surface side of the main body 1. Therefore, the substrate 21 is thermally coupled to the main body 1, and the heat from the substrate 21 is conducted to the main body 1 from the back surface side and dissipated.

The substrate 21 may be directly attached to the main body 1 and arranged, or may be indirectly attached and arranged via another member. The configuration is not particularly limited.

As shown in FIGS. 2 and 6, a light source unit cover 25 is arranged on the front surface side of the light source unit 2. The light source cover 25 is made of, for example, a transparent synthetic resin having an insulating property such as polycarbonate or acrylic resin, and is integrally formed in a substantially circle shape along the arrangement of the light emitting element 22, and includes the light emitting element 22. It is arranged so as to cover the entire surface of the substrate 21.

Therefore, the light emitted from the light emitting element 22 passes through the light source cover 25. Further, since the entire surface of the substrate 21 is covered, the charging portion is covered with the light source portion cover 25 to ensure insulation. Further, since the light source cover 25 is attached in contact with the main body 1 by screwing, heat from the main body 1 is conducted and dissipated.

As represented by FIGS. 3, 6 and 7, the lighting device 3 includes a circuit board 31 and circuit components 32 mounted on the circuit board 31. The circuit board 31 is formed of a glass epoxy resin (FR-4) or the like in a substantially quadrangular shape, and a notch portion 31a is formed in the central portion. The notch portion 31a has a circular shape, and is formed by being continuously notched so that a part thereof protrudes outward. The notch portion 31a is a portion through which the mounting portion 5 described later is inserted.

Therefore, the circuit board 31 is formed in a plate shape so as to surround the periphery of the central portion, and the circuit component 32 is mounted on the surface side thereof. Specifically, on the circuit board 31, circuit components 32 necessary for lighting control of the light emitting element 22 are mounted around the notch 31a, and for example, a control IC, a resistance element, a transformer, and switching. Transistors, zener diodes, full-wave rectifiers, capacitors, etc. are mounted.

Further, among the circuit components 32, the heat generating components 32H having a relatively large calorific value such as a control IC, a resistance element and a transformer are mounted in the vicinity of the notch 31a, and the outer peripheral side is compared. Circuit components with a small amount of heat generation are mounted.

The adapter A side is electrically connected to the circuit board 32, and is connected to a commercial AC power supply via the adapter A. Therefore, the lighting device 3 receives the AC power supply to generate a DC output, supplies the DC output to the light emitting element 22 via the lead wire, and controls the lighting of the light emitting element 22.

Such a lighting device 3 is attached to and covered with the lighting device cover 35, and is arranged 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 (lower side in the drawing).

The lighting device cover 35 is formed of a metal material such as a cold-rolled steel plate in a substantially quadrangular short cylinder shape, and the side wall 35a is inclined so as to expand toward the front side, and the back wall 35b. An opening 35c is formed in the central portion.

As shown in FIGS. 3, 5 and 6, the lighting device cover 35 is placed on the protruding portion 12 of the chassis whose front flange is the main body 1, and is screwed and thermally coupled. Can be installed.

As shown in FIGS. 2, 4 and 6, the center member 4 is made of a synthetic resin material such as PBT resin and is formed in a substantially short cylindrical shape, and is hooked at the center portion and faces the sealing body Cb. It has an opening 41. An annular space 42 is formed around the opening 41, and an optical sensor 6 described later is arranged in the space 42. Further, 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 mainly in FIG. 6, the center member 4 configured in this way is attached by screwing the flange on the back surface side to the chassis via the light source cover 25. The center member 4 can be directly or indirectly mounted on the chassis, and the specific mounting configuration thereof is not limited.

The mounting portion 5 is an adapter guide, a member through which the adapter A is inserted and engaged, and a member for mounting the lighting fixture on the ceiling surface C. As shown in FIGS. 3 and 6, the adapter guide is formed in a substantially cylindrical shape, and an engagement port 51 through which the adapter A is inserted and engaged is provided in the central portion. This adapter guide is arranged corresponding to the opening 11 formed in the central portion of the main body 1.

The mounting portion 5 does not necessarily have to be a member designated as an adapter guide or the like. For example, it may be an opening formed in the main body 1 or the like, and in essence, it means a member or a portion facing the hook sealing body Cb as a wiring device and to which the adapter A is engaged.

As shown in FIG. 6, the optical sensor 6 is an illuminance sensor, which is composed of a sensor element such as a photodiode, and operates so as to detect the brightness of the surroundings and 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 dimmed (dimmed) and turned on.

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

The shade 7 is formed in a substantially circular shape from a material having a translucent property such as an acrylic resin and having a diffusive property showing a milky white color, and a circular opening 71 is formed in the central portion. Further, a shade decorative frame 7a is attached to the outer peripheral portion of the shade 7, and the shade decorative frame 7a is formed of a transparent material made of acrylic resin or the like.

The shade 7 is detachably attached to the outer peripheral edge of the main body 1 so as to cover the front surface side of the main body 1 including the light source unit 2. Specifically, by rotating the shade 7, the shade mounting bracket 74 provided on the shade 7 is engaged with the shade receiving bracket 75 provided in the recess formed by the protrusion 14 of the main body 1. Is attached by.

Further, when removing the shade 7, the shade 7 can be removed by rotating the shade 7 in the direction opposite to that at the time of mounting and disengaging the shade mounting bracket 74 and the shade receiving bracket 75.

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

The distance between the light source cover 25 and the shade 7 is set to 20 to 60 mm, preferably 30 to 50 mm. As a result, the uniformity of the irradiation light becomes good, and the heat conducted from the main body 1 to the light source cover 25 is effectively dissipated via the shade 7.

Further, 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 is possible to improve the heat dissipation from the shade 7.

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

It is desirable to attach a translucent film material or the like to the front surface side of the cover member 8, leaving at least the transmissive portion 81.

The indirect light source unit 9 is arranged on the back surface side of the main body 1 and has a function of mainly illuminating the ceiling surface brightly. As shown in FIGS. 3, 5 and 6, a plurality of indirect light source portions 9 are arranged so as to be located around the mounting portion 5, and the substrate 91 and a plurality of indirect light source portions mounted on the substrate 91 are mounted. It includes a light emitting element 92.

The substrate 91 is formed of a substantially rectangular flat plate, and the light emitting elements 92 are mounted in a straight line along the longitudinal direction of the 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, the lighting device cover 35 is formed in a substantially quadrangular shape, and the substrate 91 is attached to the linear flat surface on the side wall 35a thereof, so that the attachment is stably performed.

Further, since the side wall 35a forming the mounting portion of the substrate 91 is formed in an inclined shape that expands toward the front surface side, the substrate 91 is directed diagonally upward, that is, toward the ceiling surface, and the light emitting element. The light emitted from the 92 is effectively emitted toward the ceiling surface.

Further, each indirect light source unit 9 is covered with a box-shaped translucent cover 93.

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

The elastic member 10 is attached in the vicinity thereof corresponding to the attachment position of each of the plurality of indirect light source portions 9. The elastic member 10 is a member arranged so as to intervene between the luminaire and the ceiling surface C when the luminaire is attached to the ceiling surface C as the fixture mounting surface (see 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 surface side of the lighting device cover 35 corresponding to the attachment position of each indirect light source portion 9. .. The elastic member 10 is formed by bending a horizontally long rectangular leaf spring, has a fixing portion 10a in the central portion, and obliquely upward (back side) from both sides of the fixing portion 10a. An extending portion 10b is formed so as to expand, and a rectangular contact portion 10c is formed on the tip end side thereof.

Further, a screw through hole is formed in the fixing portion 10a, and the elastic member 10 is attached to the lighting device cover 35 by a mounting 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.

As a plurality of such elastic members 10, that is, four elastic members 10 having the same shape and having the same elastic force are used.

In the fixed state of the elastic member 10, as represented by FIG. 6, the elastic member 10 arranged on the back side of the lighting device cover 35 is in the front side direction (in the direction of the arrow in the drawing) with the fixing portion 10a as a fulcrum. It can be elastically deformed with a spring action.

As shown in FIG. 8, the adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C by a hook blade provided on the upper surface side, and has a substantially cylindrical shape. A pair of locking portions A1 are provided on both sides of the peripheral wall so as to always project to the outer peripheral side by a built-in spring. The locking portion A1 is immersive by operating a lever provided on the lower surface side. Further, a power cord (not shown) to be connected to the lighting device 3 is derived from the adapter A, and is connected to the lighting device 3 via a connector.

In the lighting fixture configured as described above, the arrangement relationship between the light source unit 2 and the lighting device 3 will be described with reference to FIGS. 4, 6 and 7. Note that FIG. 7 is an explanatory view showing the positional relationship between the light source unit 2 and the lighting device 3 in a plane.

The light source unit 2 is configured by mounting a plurality of light emitting elements 22 on the circumference of a substantially circular substrate 21. The back surface side of the substrate 21 is thermally coupled to the main body 1 and attached. Therefore, the plurality of light emitting elements 22 are arranged around the mounting portion 5, and specifically, as shown mainly in FIGS. 4 and 7, the plurality of light emitting elements 22 surround the mounting portion 5 in a plan view. It is arranged.

On the other hand, as shown in FIG. 6, the lighting device 3 is arranged on the back side of the main body 1 and is attached to the lighting device cover 35 with a distance d in the back direction from the light source unit 2. .. Further, the circuit component 32 is arranged so as to surround the periphery of the mounting portion 5 through which the notch portion 31a of the circuit board 31 is inserted, and as shown in FIG. 7, a plurality of light emitting sources arranged on the periphery thereof. It is located inside the element 22.

Further, among the circuit components 32, the heat generating component 32H having a relatively large heat generating amount is arranged in the vicinity of the mounting portion 5.

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 rear direction, and the circuit component 32 is located inside the light emitting element 22. That is, the light emitting element 22 and the circuit component 32 are arranged so as to be offset in both the vertical direction (front-back direction) and the horizontal direction (radial direction). Further, among the circuit components 32, the heat generating component 32H is arranged away from the light emitting element 22.

Therefore, the light emitting element 22 and the circuit component 32 are arranged so as to be thermally separated from each other, and mutual thermal interference of heat generated from the light emitting element 22 and the circuit component 32 can be suppressed.

Further, since the light emitting element 22 and the circuit component 32 are arranged around the mounting portion 5 as the center, the light emitting element 22 and the circuit component 32 can be compactly configured. Further, since the lighting device 3 is arranged on the back side of the main body 1, it is possible to secure a predetermined light distribution range without narrowing the range of the light emitted from the light source unit 2.

Next, the mounting state of the lighting fixture on the ceiling surface C will be described with reference to FIG. First, the adapter A is electrically and mechanically connected to the hook ceiling body Cb installed on the ceiling surface C in advance. With the cover member 8 of the lighting fixture removed, while aligning the engagement port 51 of the adapter guide with the adapter A, hold the fixture body 1 until the locking portion A1 of the adapter A is securely engaged with the engagement port 51 of the adapter guide. The attachment operation is performed by pushing up by hand from below against the elastic force of the elastic member 10.

Next, the cover member 8 is attached, and the opening 41 at the center of the center member 4 facing the hook sealing body Cb is covered and closed.

In this state, the elastic member 10 is elastically deformed, and the contact portion 10c is elastically contacted with the ceiling surface C. Then, the contact portion 10c can be brought into contact with the ceiling surface C so as to be substantially parallel to the ceiling surface C or so that the tip portion slightly faces the vertical 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 fixture body 1, and the ceiling surface C with elastic deformation in the compression direction, and the luminaire body 1 is the elastic member 10. It is in a state of being securely held and attached to the ceiling surface C by the spring action of.

More specifically, the action of the elastic member 10 makes it possible to keep the distance between the ceiling surface C and each indirect light source unit 9 constant, and the emission angle of the light emitted from each indirect light source unit 9 is constant. Can be. As a result, the light distribution characteristics can be stabilized, and the ceiling surface C can be effectively irradiated to perform indirect lighting. Moreover, since the elastic member 10 corresponds to each indirect light source unit 9 and is arranged in the vicinity thereof, the effect that the distance between the ceiling surface C and each indirect light source unit 9 becomes more reliable. Can be expected.

When removing the lighting fixture, the cover member 8 is removed, and the lever provided on the adapter A is operated through the opening 41 of the center member 4 to disengage the locking portion A1 of the adapter A. be able to.

When electric power is supplied to the lighting device 3 in the state of being attached to the ceiling surface C of the luminaire, the light emitting element 22 is energized via the substrate 21 in the light source unit 2, and each light emitting element 22 is lit. The light emitted from the light emitting element 22 to the front side passes through the light source cover 25, is diffused by the shade 7, is transmitted, and is irradiated to the outside. Therefore, the lower part is illuminated in a predetermined light distribution range.

At the same time, when the indirect light source unit 9 is energized, each light emitting element 92 lights up, and the light emitted obliquely upward from the light emitting element 92 passes through the translucent cover 93 and is an adapter guide. It is mainly applied to the ceiling surface so as to be emitted from the periphery of 5. Therefore, the ceiling surface becomes brighter, and the feeling of brightness of the space can be improved.

In this case, the light distribution characteristics of the light emitted from the indirect light light source unit 9 can be stabilized, and effective indirect illumination can be performed.

When the light emitting element 22 is used as the light source in the light source unit 2 in this way, the light emitted from the light emitting element 22 tends to have a narrow light distribution range because the light emitted from the light emitting element 22 has a strong directivity. By providing the indirect light light source unit 9 on the back surface side of 1, the feeling of brightness of the space can be improved. Therefore, providing the indirect light light source unit 9 is an effective means when the light source of the light source unit 2 is the light emitting element 22.

Further, the lighting state of the light source unit 2 and the indirect light light source unit 9 is controlled by an optical sensor 6 that detects the brightness of the surroundings and outputs a detection signal.

Since the back surface side of the substrate 21 is thermally coupled to the main body 1, the heat generated from the light emitting element 22 is effectively conducted to the main body 1 and dissipated over a wide area. Further, since the protruding portions 12, 13, and 14 are formed on 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 mounted and mounted on the protruding portion 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, the heat generated from the lighting device 3 is dissipated mainly by the convection of the space in the lighting device cover 35.

In this case, the light emitting element 22 and the circuit component 32 are positioned with a distance d in the rear direction, and the circuit component 32 is located inside the light emitting element 22, so that they are thermally separated. It is possible to suppress mutual thermal interference. Therefore, it is possible to suppress an excessive temperature rise of the light emitting element 22 and the circuit component 32.

Further, since the heat generating component 32H in the circuit component 32 is arranged away from the light emitting element 22, mutual thermal interference can be suppressed more effectively.

Further, the heat generated from the light emitting element 92 of the indirect light light source unit 9 is conducted from the back surface side of the substrate 91 to the side wall 35a of the lighting device cover 35, and further transferred to the elastic member 10 to be dissipated.

(Additional Note) The present embodiment includes the following aspects.
In conventional lighting equipment, the heat generated from the light emitting element in the light source unit and the heat generated from the heat generating component such as the semiconductor component and the resistance element among the circuit parts in the lighting device interfere with each other, and the light emitting element and the light emitting element and the heat generating component. It may cause an excessive temperature rise of circuit components.

The luminaire according to the embodiment of the present invention has been made in view of the above problems, and provides a luminaire capable of suppressing mutual thermal interference between a light emitting element in a light source unit and a circuit component in a lighting device. The purpose.

The luminaire according to the embodiment of the present invention has a main body having an opening; the luminaire according to the embodiment of the present invention has a plurality of light emitting elements so that the light emitted from the light emitting element is directed to the front side. A light source unit arranged on the front side of the main body; a lighting device arranged in a cover projecting on the back side of the main body and controlling lighting of the light emitting element; a main body having an opening; a plurality of light sources A light source unit having an element and arranged on the front side of the main body so that the light emitted from the light emitting element is directed to the front side; and arranged in a cover protruding toward the back side of the main body. It also includes a lighting device that controls lighting of the light emitting element; and an indirect light source unit that is arranged on the outside of the lighting device cover and in the vicinity of the outside of the elastic member.

As described above, according to the present embodiment, it is possible to provide a lighting fixture capable of suppressing mutual thermal interference between a light emitting element in a light source unit and a circuit component in a lighting device.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the gist of the invention. Further, the above embodiment is presented as an example, and is not intended to limit the scope of the invention.

1 ... Instrument body (chassis), 2 ... Light source unit, 3 ... Lighting device, 4 ... Center member, 5 ... Mounting part (adapter guide), 6 ... Optical sensor, 7 ... shade, 8 ... cover member, 9 ... indirect light source unit, 10 ... elastic member, 21 ... substrate, 22 ... light emitting element (LED), 25 ... light source unit Cover, 31 ... Lighting device board, 32 ... Circuit parts, 32H ... Heat generating parts, 35 ... Lighting device cover, A ... Adapter, C ... Equipment mounting surface (ceiling surface) , Cb ・ ・ ・ Wiring equipment (hanging sealing body), d ・ ・ ・ Separation distance

Claims (1)

With the main body;
A light source unit having a plurality of light emitting elements and arranged on the front side of the main body so that the light emitted from the light emitting elements is directed to the front side;
A lighting device that is arranged in a lighting device cover that protrudes to the back side of the main body and controls lighting of the light emitting element;
An indirect light source unit arranged on the back side of the main body, outside the lighting device cover and outside the elastic member, so as to illuminate the ceiling surface;
It is a lighting fixture equipped with
A luminaire whose central part on the back side is electrically and mechanically connected to a hook ceiling body installed on the ceiling surface.

Images