TW201306299A - Light-emitting circuit and luminaire - Google Patents

Abstract

A light-emitting apparatus which ensures light uniformity of a light-emitting surface, and an illuminating apparatus having the light-emitting apparatus are provided. The light-emitting apparatus is characterized in including a substrate which is constructed by combining a plurality of unit substrates of the same shape, and light-emitting devices of various light-emitting colors installed on the substrate, wherein the light-emitting devices are alternately arranged in a predetermined sequence with equal intervals on a rough circumference centered at a roughly central portion of the substrate. Each of the plurality of unit substrates is installed respectively with the same number of light-emitting devices of each of the various light-emitting colors. Adjacent light-emitting devices on adjacent unit substrates which are joined together at the boundaries of adjacent unit substrates have different light-emitting colors, and an interval between the adjacent light-emitting devices on adjacent unit substrates is equal to an interval between adjacent light-emitting devices on each of the plurality of unit substrates.

Description

Lighting device and lighting fixture

An embodiment of the present invention relates to a light-emitting device using a light-emitting element such as a light emitting diode (LED) as a light source, and a lighting fixture including the light-emitting device.

Recently, with the increase in output, efficiency, and popularization of LEDs, a lighting fixture that can be expected to be used for a long life in indoors or outdoors using an LED as a light source has been developed. The lighting fixture mounts a plurality of LEDs on a substrate to obtain a predetermined brightness, and is used, for example, as a so-called direct mounting type base lighting that is directly mounted on a ceiling surface or the like.

On the other hand, with the diversification of lifestyles, the functions required for these lighting fixtures are not only required to brighten the surroundings, but also to satisfy the influence of the surrounding environment or light on the living body. Comfort.

Therefore, for example, a lighting fixture has been proposed in which a plurality of LEDs of different luminescent colors are used as light sources, and the illuminating intensities of the plurality of light sources are respectively adjusted to mix the lights to change the color temperature. In such a lighting fixture, a plurality of substrates on which a plurality of LEDs are mounted may be divided into a plurality of pieces, and the divided substrates may be combined to form a single light-emitting surface.

[Background literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-117080

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2009-26672

However, in this case, in the lighting state of the LED, an unnatural color (hue) may appear in the portion of the seam of the divided substrate, and there is a possibility that the uniformity of light as the entire light-emitting surface is deteriorated. problem.

The present invention has been made in view of the above problems, and an object thereof is to provide a light-emitting device capable of ensuring uniformity of light on a light-emitting surface, and a lighting fixture including the same.

A light-emitting device according to an embodiment of the present invention includes: a substrate in which a plurality of unit substrates having the same shape are combined; and a light-emitting element having a plurality of light-emitting colors is substantially constant on a substantially circumference centering on a substantially central portion of the substrate The order is alternately and arranged at equal intervals to be mounted.

Further, in the light-emitting device according to the embodiment of the present invention, in the unit substrate, the same number of light-emitting elements are mounted for each of a plurality of types of light-emitting colors, and adjacent to each other by a joint of the unit substrate Adjacent light-emitting elements in the unit substrate are arranged with light-emitting elements of different light-emitting colors, and the distance between the light-emitting elements of the respective substrates is equal to the distance between the adjacent light-emitting elements in the unit substrate.

According to an embodiment of the present invention, it is possible to provide a light-emitting device capable of ensuring uniformity of light on a light-emitting surface, and a lighting fixture including the same.

Hereinafter, a first embodiment of the present invention will be described with reference to Figs. 1 to 10 . In each of the drawings, the wiring connection relationship such as a wire is omitted. In addition, the same portions are denoted by the same reference numerals and the description thereof will be omitted.

The lighting fixture of the present embodiment is an ordinary residential lighting fixture that is used by being attached to a ceiling ceiling body, and is lighted by light emitted from a light source unit having a plurality of light-emitting elements mounted on a substrate. Indoor lighting, in which the main body of the ceiling lamp is used as a wiring device provided on the mounting surface of the appliance.

The lighting fixture includes an appliance body 1, a main light source unit 2, a lighting device 3, and a center member 4. Further, the lighting fixture includes an adapter guide 5, a photo sensor 6, a globe 7, a cover member 8, an indirect light source portion 9, and an elastic member 10. Further, an adapter A electrically and mechanically connected to the ceiling holder main body Cb is provided, and the ceiling holder main body Cb is provided on the ceiling surface C as an appliance mounting surface (see FIG. 10). Such a lighting fixture is formed into a spherical circular outer appearance, and the front side is used as an irradiation surface of light, and the back side is used as a mounting surface to the ceiling surface C. These components will be described in order.

As shown in FIG. 2 to FIG. 7 , the main body 1 is a circular bottom plate formed of a flat plate of a metal material such as a cold-rolled steel sheet, and a circular opening 11 is formed at a substantially central portion thereof. In the eleventh, the adapter guide portion 5 to be described later is disposed. A part of the circular shape of the opening 11 protrudes outward and is formed in a shape substantially equal to the outer shape of the adapter guide portion 5.

A protruding portion 12 is formed on the outer peripheral side of the opening 11, and the protruding portion 12 has a quadrangular shape and the corner portion has an R shape and protrudes toward the back side. Further, on the outer peripheral side of the protruding portion 12, a circular annular projecting portion 13 that protrudes toward the front side is formed. Further, a circular ring shape is formed on the outer peripheral side of the protruding portion 13. The protruding portion 14 protrudes toward the back side so as to be connected to the protruding portion 13 in the radial direction, in other words, a concave portion is formed toward the front side.

A shade receiving fitting 75 to which the shade 7 is detachably attached is disposed in the recess formed by the protruding portion 14. These protruding portions 12, 13, and 14 mainly function as attachment portions of members attached to the bottom plate, and have a function of reinforcing the strength of the bottom plate or a function of increasing the heat dissipation area.

Further, in the present embodiment, the body 1 corresponds to the bottom plate and may be referred to as a casing, a reflecting plate or a base. In general, it means a member or a portion in which the main light source unit 2 is disposed directly or indirectly, and is not particularly limited.

As shown in FIGS. 2, 4, and 7, the main light source unit 2 includes a substrate 21 and a plurality of light-emitting elements 22 mounted on the substrate 21 to constitute a light-emitting device. The substrate 21 is formed by arranging a plurality of arc-shaped and identically shaped blocks having a predetermined width, specifically four unit substrates 21a, by 90 degrees of rotational symmetry, and is formed in a substantially circular shape as a whole. . In other words, the substrate 21 which is formed in a substantially circular shape as a whole is configured by combining a unit substrate 21a of the same shape which is divided into a plurality of blocks in a substantially fan shape.

By using the unit substrate 21a divided as described above, heat shrinkage is absorbed by the joints (divided portions) D in the unit substrate 21a, and deformation of the substrate 21 can be suppressed. Moreover, the material of the substrate member can be efficiently obtained, which is advantageous for cost, and handling becomes easy due to the miniaturization of the member.

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

Further, in the case where the material of the substrate 21 is used as an insulating material, a ceramic material or a synthetic resin material can be used. In addition, in the case of a metal, a base substrate made of a metal having a one-layer insulating layer of a base plate having excellent thermal conductivity and excellent heat dissipation properties 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 in a plurality of rows along the circumferential direction of the plurality of circular substrates 21, and in the present embodiment, the LED packages are arranged in three rows on a substantially concentric circle having a different radius around the substantially central portion of the substrate 21. And installed. That is, it is attached to the column on the inner circumference side, the column on the outer circumferential side, and the row between the inner circumferential side column and the outer circumferential side column.

The LED package generally includes an LED chip disposed in a cavity formed of ceramic or synthetic resin, and a translucent resin for a mold such as an epoxy resin or an anthrone resin that seals the LED chip.

In the LED package in which the column on the inner circumference side and the column on the outer circumference side are mounted, LED packages in which the illuminating colors are the bulb color (LI) and the white (W) are used, which are roughly in the order of the circumference. The LED package (LED) and the white (W) LED package are sequentially arranged in a clockwise direction, and are alternately arranged at equal intervals. Specifically, in the unit substrate 21a, ten LED packages in which the illuminating color is the bulb color (LI) are mounted on the inner peripheral side, and the ten illuminating colors are white (W). The LED package has a total of 20 LED packages, and 14 LED packages with a light-emitting color (LI) and 14 LED packages with white (W) are mounted on the outer peripheral side. , a total of 28 LED packages.

The LED chip is an LED chip that emits blue light. In the light-transmitting resin, a phosphor is mixed, and in order to emit white light of a light bulb color (LI) or white (W), yellow fluorescent light emitting yellow light in a complementary color relationship with blue light is mainly used. body.

For the LED package of the column mounted in the middle, an LED package that emits light of red (R), green (G), and blue (B) is used. Therefore, the LED chips are LED chips that emit red, green, and blue light, respectively, and these LED chips are sealed by a translucent resin for a mold.

These LED packages that emit light of red (R), green (G), and blue (B) are alternately arranged in a predetermined order of red (R), green (G), and blue (B) on the circumference. Repeatedly and substantially equally spaced, and arranged in a clockwise direction, for example, in the order of red (R), green (G), and blue (B). Specifically, in the unit substrate 21a, 12 LED packages in which the illuminating color is red (R), 12 LED packages in which the illuminating color is green (G), and 12 illuminating colors are blue (B) are mounted. The LED package is a total of 36 LED packages.

In addition, the arrangement of red (R), green (G), and blue (B) in the LED package is not particularly limited as long as it is in a certain order, and may be, for example, green (G), red (R), or blue. The order of colors (B) is arranged.

On the circumference of a substantially concentric circle having different radii as described above, a plurality of light-emitting elements 22 emitting light of a bulb color (LI) and white (W) are arranged in a row, and the center is substantially the same as the circle Red (R), green (G), and blue are arranged in a row on the circumference of the circle and between the columns of the light-emitting elements 22 that emit light of the bulb (LI) and white (W). (B) a plurality of light-emitting elements 22 of light.

Therefore, since a plurality of light-emitting elements 22 having different luminescent colors are disposed, that is, light emitting light (LI), white (W) red (R), green (G), and blue (B) is disposed. Since the light-emitting element 22 has a wide range of light colors that can be expressed by mixing these lights, the light color can be appropriately adjusted by adjusting the output of the light-emitting element 22.

As described above, in the column on the inner circumference side of the unit substrate 21a, the column on the middle side, and the column on the outer circumference side, the same number of light-emitting elements 22 are attached to each of a plurality of types of luminescent colors. Further, adjacent light-emitting elements 22 in the unit substrate 21a adjacent to each other with the joint D of the unit substrate 21a as a boundary are mounted with light-emitting elements 22 of different luminescent colors, and the distance between these mutually-light-emitting elements 22 is S1 is equal to the distance S2 between adjacent light-emitting elements in the unit substrate.

In other words, the adjacent light-emitting elements 22 in the unit substrate 21a adjacent to each other with the joint D of the unit substrate 21a as a boundary are bulb color (LI), white (W) or red (R), green (G). The blue color (B) is alternately arranged in a certain order. As a result, the column on the inner circumference side and the column on the outer circumference side are light-emitting elements 22 of different illuminating colors, and the light-emitting elements 22 of the bulb color (LI) emit light and white. (W) The light-emitting elements 22 that are illuminated are adjacent. and, In the middle column, the blue (B) light-emitting element 22 is adjacent to the red (R) light-emitting element 22.

Therefore, in the unit substrate 21a configured as described above, even if any unit substrate 21a is combined, adjacent light-emitting elements 22 in the unit substrate 21a adjacent to each other with the joint D as a boundary are arranged with different light emission. Colored light-emitting elements 22. Therefore, in the portion of the joint D of the unit substrate 21a, it is possible to prevent the light from appearing unnatural and to ensure uniformity of the entire light-emitting surface.

If it is mounted on the light-emitting element 22 of the unit substrate 21a, it is arranged in red (R), green (G), blue (B), red (R), green (G), blue (B), and red (R). In the case of the adjacent light-emitting elements 22 in the unit substrate 21a adjacent to each other with the seam D as a boundary, the light-emitting elements of the same color as red (R) and red (R) are overlapped and arranged adjacent to each other, and the color of the light is arranged. An unnatural part is generated, so that it is difficult to ensure uniformity of the entire light-emitting surface.

The case will be specifically described with reference to FIGS. 8 and 9. 8 and 9, in the description, the light source unit 2, that is, the substrate 21 and the light-emitting element 22 mounted on the substrate 21 are simplified and schematically shown.

In FIG. 8, the substrate 21 which is formed in a substantially circular shape as a whole is formed by combining a unit substrate 21a of the same shape which is divided into a plurality of substantially fan-shaped shapes. Further, on the circumference centering on the substantially central portion of the substrate 21, a plurality of light-emitting elements of a plurality of light-emitting colors are alternately and equally spaced in a predetermined order, that is, red (R), green (G), and blue ( B) The light-emitting elements 22 that are illuminated are arranged and mounted.

Here, the number of unit substrates 21a is set to k, from the substrate 21 The distance from the center O to the light-emitting element 22 is r, the distance between the joints D between the unit substrates 21a is c, the number of light-emitting colors of the light-emitting elements 22 is m, and the light-emitting elements 22 of each of the plurality of light-emitting colors are When the number is set to n, there is a relationship in which n/k (n/k is an integer) is mounted on the unit substrate 21a of the light-emitting elements 22 of each of the plurality of luminescent colors.

Further, the light-emitting element 22 attached to the end portion of the unit substrate 21a is the j-th color (j=1 to m, the order of the number of light-emitting colors arranged in a predetermined order) on the circumference of the starting point, and in the same luminescent color When the light-emitting element 22 of the i-th (i=1 to n/k, the order of the same luminescent color) is set to L from the end of the unit substrate 21a, the distance L can be based on It is calculated by the following formula 1.

According to the above-described formula 1, the light-emitting elements 22 are arranged on the unit substrate 21a, and the unit substrate 21a is combined, whereby the adjacent light-emitting in the unit substrate 21a adjacent to the joint D of the unit substrate 21a is used. The element 22 is provided with light-emitting elements 22 of different illuminating colors, and the distance S1 between the mutually opposing light-emitting elements 22 can be equal to the distance S2 between adjacent mutually adjacent light-emitting elements in the unit substrate.

Therefore, in the portion of the joint D of the unit substrate 21a, it is possible to prevent the light from appearing unnatural and to ensure uniformity of the entire light-emitting surface.

Then, according to the formula 1, try, for example, the upper left single shown in FIG. The distance L is calculated by the blue (B) light-emitting element 22B at the right end of the substrate 21a. Since the number of each color in the unit substrate 21a is two, and the number k of the unit substrate 21a is four, the number n of the light-emitting elements 22 of each of the plurality of luminescent colors is 2 × 4 = 8. Since the three-color light-emitting elements 22 that emit red (R), green (G), and blue (B) are arranged, the number of light-emitting colors m of the light-emitting elements 22 is three.

Further, in the illuminating color of the illuminating color, in the blue (B) light-emitting element 22B, when the light-emitting element 22 attached to the end of the unit substrate 21a is used as the starting point, the blue (B) is the first 2, so i is 2. In the j-th color, the blue color (B) of the light-emitting elements 22 arranged in red (R), green (G), and blue (B) is the third color, and thus j is 3.

Therefore, the distance L can be calculated for the blue (B) light-emitting element 22B as follows, and the arrangement can be determined.

The distance L of each of the light-emitting elements 22 can be calculated as described above, and the arrangement can be determined.

Incidentally, in Formula 1, 2πr/nm indicates the separation distances S1 and S2 of the respective light-emitting elements 22. Further, 1/2 ((2πr/nm)-c) of the first term indicates the distance a from the end of the unit substrate 21a to the first light-emitting element 22. Therefore, (2πr/nm) × (m × (i-1) + j-1) of the second term indicates the remaining distance b, and the sum of the distance a and the distance b becomes a specific light-emitting element. The position of the distance L on the circumference of 22.

Then, in the same manner as in the embodiment shown in FIG. 4, the light-emitting elements 22 of the bulb color (LI) and the white (W) are used in the column on the inner circumference side and the column on the outer circumference side, and they are The circumferences are alternately arranged at substantially equal intervals in a certain order. Further, in the middle row, the light-emitting elements 22 that emit light of red (R), green (G), and blue (B) are alternately arranged at equal intervals on the circumference in a predetermined order. .

The distance L is calculated by trying to count the sixth light-emitting element 22W from the end of the column on the outer peripheral side of the unit substrate 21a on the upper left side as shown in FIG. Since the number of each color in the unit substrate 21a is four, and the number k of the unit substrate 21a is four, the number n of the light-emitting elements 22 of each of the plurality of types of luminescent colors is 4 × 4 = 16. Since the two-color light-emitting elements 22 that emit light in the light bulb color (LI) and white (W) are arranged, the light-emitting color number m of the light-emitting elements 22 is two.

Further, with respect to the i-th of the illuminating colors, since white (W) is the third one, i is 3. In the jth color, since white (W) in the light-emitting elements 22 arranged in the bulb color (LI) and white (W) is the second color, j is 2.

Therefore, the distance L can be calculated for the white (W) light-emitting element 22W as follows, and the arrangement can be determined.

In addition, the LED can directly mount the LED chip on the substrate 21, and a bullet-type LED can also be mounted, and the mounting manner or form is not particularly limited.

As shown in FIG. 7, the main light source unit 2 configured as described above is disposed around the opening 11 of the main body 1, and the mounting surface of the light-emitting element 22 is disposed toward the front side, that is, toward the downward irradiation direction. In addition, the back surface side of the substrate 21 is attached to the inner surface side of the main body 1 so as to be attached by, for example, a fixing mechanism such as a screw. Therefore, the substrate 21 is thermally coupled to the body 1, and heat from the substrate 21 is conducted from the back side to the body 1 and dissipated.

In addition, when the substrate 21 is directly attached to the main body 1 or is indirectly mounted via another member, the arrangement of the substrate 21 is not particularly limited.

As shown in FIGS. 2 and 7, a light source unit cover 25 is disposed on the front side of the main light source unit 2. The light source unit cover 25 includes, for example, an insulating transparent synthetic resin such as polycarbonate or an acrylic resin, and is integrally formed in a substantially circular shape along the arrangement of the light-emitting elements 22 to cover The entire surface of the substrate 21 including the light-emitting element 22 is disposed.

Therefore, the light emitted from the light-emitting element 22 passes through the light source unit cover 25. Further, since the entire surface of the substrate 21 is covered, the charging portion is covered by the light source portion cover 25 to ensure insulation.

As shown in FIGS. 3 and 7, the lighting device 3 includes a circuit board 31, a control integrated circuit (IC) mounted on the circuit board 31, a circuit component 32 such as a transformer, and a capacitor. Circuit base The plate 31 is formed in a plate shape so as to surround the periphery of the center portion, and the circuit component 32 is attached to the surface side thereof.

The circuit board 32 is electrically connected to the adapter A side, and is connected to the commercial AC power source 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 a wire, and performs lighting control of the light-emitting element 22.

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

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

As shown in FIGS. 3 and 5 to 7, the lighting device cover 35 is placed on the protruding portion 12 of the bottom plate and is screwed and attached.

As shown in FIGS. 2, 4, and 7, the center member 4 is made of a synthetic resin material such as polybutylene terephthalate (PBT) resin, and is formed into a substantially short cylindrical shape. The central portion has an opening 41 facing the ceiling holder main body Cb. Further, an annular space portion 42 is formed around the opening 41, and a photosensor 6 to be described later is disposed in the space portion 42. Further, a light receiving window 43 facing the light receiving portion of the photo sensor 6 is formed on the front wall of the center member 4.

The center member 4 thus configured is mainly as shown in FIG. 7, and the flange on the back side is screwed and attached to the bottom plate via the light source unit cover 25. In addition, the central member 4 can be directly or indirectly mounted on the bottom plate, and its specific installation is not limited.

The adapter guide portion 5 is a member for the adapter A to be inserted and engaged. As shown in FIGS. 3 and 7, the adapter guide portion 5 is formed in a substantially cylindrical shape, and an engagement opening 51 through which the adapter A is inserted and engaged is provided at the center portion. The adapter guide portion 5 is disposed corresponding to the opening 11 formed in the central portion of the body 1.

As shown in FIG. 7, the photo sensor 6 is an illuminance sensor, and includes a sensor element such as a photodiode, and operates in such a manner as to detect the surrounding brightness and output a detection signal. Thereby, when the surroundings are bright, the main light source unit 2, that is, the light-emitting element 22 is dimmed (dimmed) and turned on.

The photo sensor 6 is mounted on a substrate, and is disposed so as to face the light receiving portion 43 and face the light receiving window 43 and is mounted in the space portion 42 of the center member 4. More specifically, the substrate is screwed to the bobbin of the center member 4, and the photo sensor 6 is housed in the guide cylinder, and is disposed such that the light receiving portion and the light receiving window 43 face each other.

The shade 7 is formed into a substantially circular shape by a light-transmitting, milky white material having diffusibility such as an acrylic resin, and a circular opening 71 is formed in the center portion. Further, a shade decorative frame 7a is attached to the outer peripheral portion of the globe 7, and the shade decorative frame 7a is formed of a transparent material containing an acrylic resin or the like.

Further, the shade 7 is detachably attached to the outer peripheral edge portion of the main body 1 so as to cover the front side of the main body 1 including the main light source unit 2. Specifically, the lamp cover provided in the lamp cover 7 is mounted by rotating the lamp cover 7. The fitting 74 is fitted to the shade receiving fitting 75 for mounting, wherein the shade receiving fitting 75 is disposed in a recess formed by the projection 14 of the body 1.

Further, when the cover 7 is removed, the cover 7 is rotated in the opposite direction to the mounting, and the engagement between the cover attachment 74 and the cover receiving attachment 75 is released, and the cover can be removed.

Further, the globe 7 is preferably configured to be detachably attached to the outer peripheral edge portion of the main body 1, or may be configured to be fixed to the main body 1 by a fixing mechanism such as a screw. This is because, in the lighting fixture in which the light-emitting element 22 is used as a light source and can be expected to have a long life, it is less necessary to replace the light source or clean the inside for maintenance.

As shown in FIGS. 2 and 7, the cover member 8 is formed into a circular shape from a material such as a transparent acrylic resin. The cover member 8 corresponds to the opening 71 of the globe 7, and is attached to the front wall of the center member 4, and is disposed to cover and close the opening 41 of the center member 4. Further, a circular transmissive portion 81 that faces the light receiving window 43 of the photosensor 6 is formed in the lid member 8.

Further, it is preferable that at least the transmissive portion 81 is left on the front surface side of the lid member 8 to attach a opaque film or the like.

The indirect light source unit 9 is disposed on the back side of the body 1 and mainly has a function of illuminating the ceiling surface. As shown in FIGS. 3 and 5 to 7, the indirect light source unit 9 is located around the adapter guide portion 5, in other words, is disposed around the opening 11 in the body 1 and includes a plurality of substrates. 91. And a plurality of light emitting elements 92 mounted on the substrate 91.

The substrate 91 on which the light-emitting element 92 is mounted is attached to four portions of the side wall 35a of the lighting device cover 35.

Further, each of the indirect light source units 9 is covered by a box-shaped translucent cover 93.

Similarly to the main light source unit 2, the light-emitting element 92 is an LED and is a surface mount type LED package. Further, the light-emitting element 92 is connected to the lighting device 3 and is controlled by lighting.

The elastic member 10 is mounted in the vicinity of the mounting position of the plurality of indirect light source units 9. The elastic member 10 is disposed so as to be inserted between the lighting fixture and the ceiling surface C in a state where the lighting fixture is attached to the ceiling surface C as the appliance mounting surface (see FIG. 10).

Specifically, the elastic member 10 is a metal spring member including a material such as stainless steel, and is attached to the mounting position of each indirect light source unit 9 on the back side of the lighting device cover 35.

As shown in FIG. 10, the adapter A is electrically and mechanically connected to the ceiling holder main body Cb provided on the ceiling surface C by a hook provided on the upper surface side, and has a substantially cylindrical shape on both sides of the peripheral wall. The pair of locking portions A1 are provided so as to protrude toward the outer peripheral side by the built-in spring. The locking portion A1 is hidden by operating the push rod provided on the lower side. Further, a power supply line (not shown) connected to the lighting device 3 is led out from the adapter A, and is connected to the lighting device 3 via a connector.

Next, the mounting state of the lighting fixture to the ceiling surface C will be described with reference to FIG. First, the adapter A is electrically and mechanically connected to the ceiling holder main body Cb previously provided on the ceiling surface C. In the state where the cover member 8 of the lighting fixture is removed, the engaging opening 51 of the adapter guiding portion is aligned and transferred. The device A is placed against the elastic force of the elastic member 10 and pushed upward from the bottom by the hand to perform the attaching operation until the locking portion A1 of the adapter A is surely engaged with the engaging opening 51 of the adapter guide portion. .

Then, the cover member 8 is attached to cover and close the opening 41 of the central portion of the center member 4 facing the ceiling holder main body Cb.

In this state, the elastic member 10 is elastically deformed and elastically abuts against the ceiling surface C. Therefore, the elastic member 10 is inserted between the back surface side of the lighting device cover 35 on the back side of the luminaire main body 1 and the ceiling surface C, and is elastically deformed in the compression direction, whereby the luminaire main body 1 is in the following state: The elastic member 10 is surely held by the spring and mounted on the ceiling surface C.

Further, when the lighting fixture is removed, the cover member 8 is removed, and the pusher provided on the adapter A is operated by the opening 41 of the center member 4, thereby releasing the engagement of the locking portion A1 of the adapter A. , which can be removed.

When the lighting device is mounted on the ceiling surface C, when the lighting device 3 is supplied with electric power, the light-emitting element 22 is energized via the substrate 21 of the main light source unit 2, and each of the light-emitting elements 22 is turned on. The light emitted from the light-emitting element 22 toward the front side passes through the light source unit cover 25, is diffused through the globe 7, and is transmitted to the outside. Therefore, it is illuminated below the specified light distribution range.

In this case, the adjacent light-emitting elements 22 in the unit substrate 21a adjacent to each other with the joint D of the unit substrate 21a as a boundary are disposed with the light-emitting elements 22 having different luminescent colors without overlapping the luminescent colors. Further, the distance S1 between the mutual light-emitting elements 22 and the distance S2 between the adjacent light-emitting elements in the unit substrate are equal.

Therefore, it is possible to prevent the light from appearing unnatural and to ensure uniformity of the entire light-emitting surface.

When the indirect light source unit 9 is energized at the same time, the light-emitting elements 92 are turned on, and the light emitted obliquely upward from the light-emitting element 92 is transmitted through the translucent cover 93 and from the adapter guide 5 The way around the radiation, and mainly to the ceiling surface. Therefore, the ceiling surface becomes bright, and the brightness of the space can be improved.

Further, the main light source unit 2 and the indirect light source unit 9 control the lighting state by detecting the brightness of the surroundings and outputting a detection signal to the photo sensor 6.

On the other hand, since the back side of the substrate 21 is thermally coupled to the body 1, heat generated by the light-emitting element 22 can be efficiently conducted to the body 1 and dissipated in a wide area. Further, since the projections 12, 13, and 14 are formed in the body 1, the heat dissipation area can be increased, and the heat dissipation effect can be further improved.

Further, the lighting device cover 35 is placed and mounted on the protruding portion 12 of the main body 1, thereby promoting conduction of heat from the main body 1 to the lighting device cover 35 and dissipating heat. Further, heat generated by the light-emitting element 92 of the indirect light source unit 9 is conducted from the back side of the substrate 91 to the side wall 35a of the lighting device cover 35, and is also conducted to the elastic member 10, thereby dissipating heat.

As described above, according to the present embodiment, it is possible to provide a light-emitting device and a lighting fixture capable of ensuring the uniformity of light on the light-emitting surface.

Next, a second embodiment will be described with reference to Fig. 11 . FIG. 11 shows a light-emitting device as the main light source unit 2. The same or equivalent portions as those of the first embodiment are denoted by the same reference numerals and the description thereof will not be repeated.

The main light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21. In the first embodiment, the substrate 21 has been formed in an arc shape having a predetermined width dimension. In the present embodiment, the outer peripheral side is formed in a square shape, and is formed in a polygonal shape as a whole, specifically, It is roughly quadrilateral in shape.

In the case of the substrate 21 having such a shape, a plurality of unit substrates 21a having the same shape may be combined. In this case, the light-emitting elements 22 of the plurality of luminescent colors can be alternately and alternately arranged in a predetermined order on the circumference centered on the substantially central portion of the rectangular substrate 21, thereby achieving The same effect as the first embodiment.

The present invention is not limited to the configuration of the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the invention. For example, a plurality of light-emitting elements are mounted on a substantially circumference centered on a substantially central portion of the substrate. In this case, a slight inner circumferential side or an outer circumferential side on the circumference, that is, a displacement in the radial direction or the like is allowed. Further, the embodiment is disclosed as an example and is not intended to limit the scope of the invention.

1‧‧‧ Appliance body

2‧‧‧Main light source unit (lighting unit)

3‧‧‧Lighting device

4‧‧‧ central components

5‧‧‧Adapter Guide

6‧‧‧Light sensor

7‧‧‧shade

7a‧‧‧shade decorative frame

8‧‧‧Caps

9‧‧‧Indirect light source department

10‧‧‧Flexible components

11, 35c, 41, 71‧‧‧ openings

12, 13, 14‧‧ ‧ protruding parts

21, 91‧‧‧ substrate

21a‧‧‧unit substrate

22, 22B, 22W, 92‧‧‧Lighting elements (LED)

25‧‧‧Light source cover

31‧‧‧ circuit board

32‧‧‧ circuit parts

35‧‧‧Lighting device cover

35a‧‧‧ side wall

35b‧‧‧back wall

42‧‧‧ Space Department

43‧‧‧light window

51‧‧‧Kate

74‧‧‧shade mounting accessories

75‧‧‧Receiving metal parts

93‧‧‧Translucent cover

a, b, L, r‧‧‧ distance

A‧‧‧Adapter

A1‧‧‧ card stop

B‧‧‧Blue

C‧‧‧ appliance mounting surface (ceiling surface)

Cb‧‧‧Wiring device (main body of ceiling lamp holder)

D‧‧‧ unit substrate joints

G‧‧‧Green

L‧‧‧ bulb color

O‧‧‧Center of Substrate 21

R‧‧‧Red

S1, S2‧‧‧ separation distance

W‧‧‧White

Fig. 1 is a perspective view showing a lighting fixture according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view showing the front side of the lighting fixture of the first embodiment.

Fig. 3 is an exploded perspective view showing the back side of the lighting fixture of the first embodiment.

4 is a lampshade in the lighting fixture of the first embodiment (shade) and a plan view showing the light source unit cover removed.

Fig. 5 is a perspective view showing a back side of the lighting fixture of the first embodiment.

Fig. 6 is a plan view showing a back side of the lighting fixture of the first embodiment.

Fig. 7 is a longitudinal sectional view showing the lighting fixture of the first embodiment.

Fig. 8 is a plan view schematically showing a main light source unit (light emitting device) in the lighting fixture of the first embodiment.

Fig. 9 is a plan view schematically showing a main light source unit (light emitting device) in the lighting fixture.

Fig. 10 is a cross-sectional view showing a state in which the lighting fixture of the first embodiment is attached to a ceiling surface.

Fig. 11 is a plan view schematically showing a main light source unit (light emitting device) according to a second embodiment of the present invention.

21‧‧‧Substrate

21a‧‧‧unit substrate

22, 22B‧‧‧Lighting elements (LED)

a, b, L, r‧‧‧ distance

A‧‧‧Adapter

A1‧‧‧ card stop

B‧‧‧Blue

C‧‧‧ appliance mounting surface (ceiling surface)

Cb‧‧‧Wiring device (main body of ceiling lamp holder)

D‧‧‧ unit substrate joints

G‧‧‧Green

L‧‧‧ bulb color

O‧‧‧Center of Substrate 21

R‧‧‧Red

S1, S2‧‧‧ separation distance

W‧‧‧White

Claims (3)

A light-emitting device comprising: a substrate, wherein a plurality of unit substrates having the same shape are combined; and a plurality of light-emitting elements of a plurality of luminescent colors are substantially constant on a substantially circumference centered on a substantially central portion of the substrate The steps are alternately arranged at equal intervals and mounted; and in the unit substrate, each of the plurality of luminescent colors is mounted with the same number of light-emitting elements, and the adjacent portions of the unit substrate are adjacent to each other The light-emitting elements adjacent to each other in the unit substrate are disposed with the light-emitting elements of different luminescent colors, and the distance between the mutually adjacent light-emitting elements and the adjacent mutual light in the unit substrate The separation distance between the components is equal. A light-emitting device comprising: a substrate, wherein a plurality of unit substrates having the same shape are combined; and a plurality of light-emitting elements of a plurality of luminescent colors are substantially constant on a substantially circumference centered on a substantially central portion of the substrate The order is alternately arranged at equal intervals, and the number of the unit substrates is k, and the distance from the center of the substrate to the light-emitting element is r, and the distance between the unit substrates is set. In the case of c, the number of light-emitting colors of the light-emitting element is m, and when the number of light-emitting elements of each of the plurality of light-emitting colors is n, the light-emitting elements of each of the plurality of light-emitting colors are on the unit substrate. n/k (n/k is an integer) relationship is mounted, and the j-th color (j=1 to m) on the circumference of the starting point of the light-emitting element mounted on the end of the unit substrate is used, and the same illuminating color In the i-th (i=1 to n/k) light-emitting element, when the distance from the end of the unit substrate is set to L, the following Expression 1 is satisfied: A lighting fixture comprising: the light-emitting device according to claim 1 or 2; and a lighting device that performs lighting control on the light-emitting elements in the light-emitting device.