JP2009231227A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of changing emission colors of a plurality of light emitting diodes emitting light by being supplied with power from a board arranged in a housing. <P>SOLUTION: The luminaire is composed of at least: the housing; the board arranged in the housing; a plurality of surface-mounted packages attached to the board; a first phosphor layer; a second phosphor layer; a movable plate capable of changing the plurality of phosphor layers to a first position and a second position; and a movable device moving the movable plate. The board is formed to be housed in the housing. The plurality of surface-mounted packages are attached to the board at predetermined intervals. Each surface-mounted package is composed of a light emitting diode, a metal member capable of carrying a large current, solder jointing an electrode of the light emitting diode to the metal member, a reflecting frame and the like. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting fixture that can change the light emission color of a plurality of light emitting diodes that emit light when fed from a substrate provided in a housing. The present invention relates to a luminaire that allows a large current to flow through the light-emitting diode and takes into account heat dissipation of the heat generated at that time or expansion and contraction due to the thermal stress. Further, the present invention can prevent damage to the light emitting layer in the light emitting diode due to vibration or heat by connecting the gold wire by soldering to a metal member made of a metal plate member instead of connecting by wire bonding. The present invention relates to a lighting fixture including a plurality of light emitting diodes. Furthermore, the present invention relates to a lighting apparatus capable of efficiently irradiating light from the light emitting part because fine irregularities are formed on the upper surface light emitting part of the light emitting diode and the upper surface is not covered with a sealing material. Is.

For example, in a lighting fixture having a plurality of light emitting diodes in Japanese Patent Application Laid-Open No. 2008-21615, a plurality of light emitting diodes are mounted in a cylindrical structure inside a spherical housing, and the spherical housing is supported movably by a holding cup. Yes. Since the spherical housing to which the light emitting diode is attached is supported by the upper edge of the holding cup, the angle of the cylindrical structure to which the light emitting diode is attached can be changed. The lighting fixture having the above-described structure can easily change the irradiation direction of light from the light emitting diode to a desired direction.
JP 2008-21615 A

  Although the lighting fixture described in the said patent publication can change the irradiation direction of light, it cannot change the color tone. When changing the color tone, the user has to change all the luminaires or replace the light emitters (light bulbs, fluorescent lights, light emitting diodes) with the luminaires. Since bulbs or fluorescent lamps are sold with different colors, it is easy to change the colors with only the trouble of replacing them.

  However, a lighting fixture incorporating a light-emitting diode often has a plurality of light-emitting diodes attached to a package or a substrate, and cannot be replaced with one having a different color tone.

  In order to solve the above-described problems, an object of the present invention is to provide a lighting apparatus that can change the color tone of a light-emitting diode each time a different phosphor layer is moved. An object of the present invention is to provide a luminaire that is excellent in mass productivity, can withstand a large current and thermal stress, and is maintained at a high strength.

(First invention)
The lighting fixture of the first invention corresponds to a housing, a substrate provided in the housing, a light emitting diode assembly in which at least one light emitting diode is attached to the substrate, and the plurality of light emitting diode assemblies. A first phosphor layer provided at a first position, and a second phosphor layer provided at a second position corresponding to the plurality of light emitting diode assemblies from the first position. It is at least comprised from the movable plate provided in the said housing which can be changed to the position of 2, and the movable apparatus which moves the said movable plate to the said 1st position and a 2nd position.

(Second invention)
A lighting apparatus according to a second aspect of the present invention includes a substantially cylindrical housing, a ring-shaped substrate provided in the housing, a plurality of surface-mounted packages attached to the ring-shaped substrate, and the plurality of surfaces. A first phosphor layer provided at a first position corresponding to the mounting package and a second phosphor layer provided at a second position corresponding to the plurality of surface-mount packages are the first phosphor layer. At least a disk body provided in the housing that can be changed from a first position to a second position, and a movable device that moves the disk body to the first position and the second position. It is characterized by being.

(Third invention)
In the lighting fixture of the third invention, the light emitting diode in the surface mount package of the first invention or the second invention is an ultraviolet light emitting diode or a blue light emitting diode, and the first phosphor layer is a light emitting diode of the light emitting diode. The second phosphor layer absorbs a part or all of the light and emits white light having a color temperature of 4000K to 7100K, and the second phosphor layer absorbs a part or all of the light of the light emitting diode to generate a color temperature of 2000K to 4000K. The white light is emitted.

(Fourth invention)
In the lighting device of the fourth invention, the color temperature of the white light emitted from the first phosphor layer in the first invention or the second invention is different from the color temperature of the white light emitted from the second phosphor layer. Is 1000K or more.

(Fifth invention)
In the luminaire of the fifth invention, the light-emitting diodes of the first to fourth inventions are gallium nitride upper and lower electrode type light-emitting diodes, mounted on a surface-mount package and attached to the substrate. To do.

  According to the present invention, it is easy to change the light from the luminaire to different colors by moving the movable plate or the disc body on which at least two types of phosphor layers that absorb different light of the light emitting diode are formed. it can.

  According to the present invention, the luminaire includes a substrate or a ring-shaped substrate, a light emitting diode, a metal member, a reflection frame, a movable plate or a disk body, and two types of phosphor layers attached to the movable plate or the disk body. Therefore, heat dissipation is good, a large current can be passed, and two types of color tone can be emitted with high brightness.

  According to the present invention, since it does not use wire bonding or the like, it is not only reliable over a long period of time, but also it is not necessary to seal the light emitting diode with a filler, so it is inexpensive and has high brightness that is excellent in mass productivity. Can be obtained.

  According to the present invention, since the upper electrode of the upper and lower electrode type light emitting diodes connected to one substrate and the other substrate are connected by a metal member such as a plate or a gold ribbon, a large current flows. In addition to being excellent in heat dissipation, it can be alleviated even if thermal stress occurs. In particular, according to the present invention, since each connecting portion is joined by solder, vibration is not applied to the joining portion and / or the light emitting layer, and a highly reliable lighting apparatus having a high luminance composed of a plurality of light emitting diodes is obtained. I was able to do it.

(First invention)
A lighting fixture according to a first aspect of the present invention is a housing, a substrate provided in the housing, a plurality of light emitting diode assemblies attached to the substrate, a first phosphor layer, and the first fluorescence. At least from a second phosphor layer that absorbs light different from the body layer, a movable plate that can change the plurality of phosphor layers to a first position and a second position, and a movable device that moves the movable plate. It is configured. The housing is substantially a box having one open side and the other bottom, and the lighting fixture can be mounted downward, upward, or at a desired angle. Moreover, the said housing can be made into a desired shape, for example, the said movable plate is attached to the open end.

  The substrate is provided so as to be housed in the housing. For example, a conductive film having a desired shape is formed on an insulating substrate such as a printed wiring board. The substrate may be provided with a metal substrate or a conductive film insulated from each other on an insulating substrate. Furthermore, the insulating substrate may be a synthetic resin substrate or a ceramic substrate. In the plurality of light emitting diode assemblies, at least one light emitting diode is attached to the substrate at a predetermined interval. The light emitting diode assembly includes a light emitting diode, a metal member connected to the conductive film of the substrate or a metal substrate and having a width that allows the electrode of the light emitting diode to flow a large current, the electrode of the light emitting diode, and the metal member And solder, and a reflection frame. The board is provided with a socket for connecting to a power source.

  A movable plate for closing the opening is movably attached to the housing. The movable plate is provided with, for example, twice the number of light-emitting diodes, and the first phosphor layer at a first position corresponding to the plurality of light-emitting diodes emits light emitted from the light-emitting diodes. The second phosphor layers are respectively provided at the second positions for making the colors different from each other.

  The movable plate is movable in the housing by a movable device provided on the substrate, and moves a predetermined distance to cause the light emitting diode to emit light in different colors via different phosphor layers. The movable plate can be arbitrarily formed into a circular shape, a rectangular shape, or an elliptical shape, and can be translated by a predetermined distance. The luminaire can emit light of different colors only by moving the movable plate by a predetermined distance by the movable device. As long as the movable device can move the substrate by a predetermined distance, it can be manually operated instead of the motor. That is, the lighting apparatus can change the light emitting diode to a different color depending on the mood at that time or the season such as summer or winter.

(Second invention)
A lighting apparatus according to a second aspect of the invention includes a cylindrical housing, for example, a ring-shaped substrate made of a printed wiring board, a plurality of surface-mount packages, and a disk body provided in an open portion of the housing; It is comprised at least from the movable apparatus which moves the said disc body. The ring-shaped substrate is made of a synthetic resin or ceramic insulating substrate integrally formed through a space or an insulating member, and a conductive film or a metal substrate on the substrate.

  In the surface mount package, one electrode is connected to one of the ring-shaped substrates, and the other electrode is connected to the other ring-shaped substrate via a metal member by soldering. Unlike the gold wire, the metal member is made of a gold ribbon or a plate-like member. Therefore, the metal member not only allows a large current to flow, but also has a heat dissipation effect because of its large area. In addition, the disc body has a second phosphor layer that develops a different color from the first phosphor layer alternately at the same interval at a second position different from the first position corresponding to the light emitting diode. Is provided.

  The metal member has gold, silver, or copper, or at least one type of plating selected from gold, silver, or nickel on the surface of the copper. The metal member is composed of, for example, two ribbon-like arm portions or ribbon-like metal members, and an opening is formed between the arm portions. Light emitted from the side of the light emitting layer of the light emitting diode can be emitted upward from an opening formed between the arms.

  The metal member is not limited to the shape of the arm portion as long as light from the side portion of the light emitting layer of the light emitting diode can easily pass through the upper portion. The ribbon-shaped metal member not only allows a large amount of current to flow, but also has low electrical resistance and low heat generation. Further, since the metal member has a large surface area and / or cross-sectional area, it can quickly release the heat generated inside.

  The disc body closes one of the housings, for example, and is provided with, for example, twice the number of light emitting diodes at the same interval. The through hole is provided with a first phosphor layer at a position corresponding to the light emitting diode. In addition, the through-holes are alternately provided at the same interval with the second phosphor layer that develops a different color from the first phosphor layer.

  The drive device is provided on the metal substrate and rotates the rotating disk by the interval. The driving device includes a motor and its control device, and moves the rotating disk by a predetermined distance. That is, the luminaire can select either warm color light or cool color light by rotating a motor by a predetermined angle, for example.

  The lighting fixture may be a ceramic substrate instead of a synthetic resin member. The ceramic substrate connects a plurality of light emitting diodes in series, for example, by forming a conductive film. The substrate may be a metal substrate instead of a synthetic resin substrate or a ceramic substrate. The metal substrate forms a conductive film wiring after forming an insulating film.

  In the lighting fixture, a reflection frame that reflects light from a plurality of light emitting diodes is bonded to an insulating substrate, a metal substrate, or a ceramic substrate. In the case of the metal substrate, the reflection frame can prevent deterioration of strength due to a space between the metal substrates or an insulating member. In addition, by providing a reflecting member such as gold, silver, or nickel, the reflecting frame not only efficiently reflects the light of the light emitting diode, but also efficiently releases the heat in the lighting fixture. Furthermore, the reflective frame can be further improved in heat dissipation efficiency by using a porous ceramic.

  Further, the reflection frame is made of a member such as alumina, a composite ceramic of alumina and glass, and the substrate is made of resin, glass, or brazing adhesive so as to correspond to the respective electrode portions. It is joined to the part and the electrode part. The shape of the reflection frame can be a square, a circle, an ellipse, a rectangle, or the like.

  In the lighting fixture, a stepping motor is used as a driving device for moving or rotating the movable plate or the disk. Since the stepping motor can be accurately moved by a predetermined angle by the control device, it is not necessary to make the phosphor layer larger than necessary.

  In the lighting fixture, a control device for the stepping motor is attached to the light control device of the lighting fixture. The said light control apparatus can control the brightness | luminance in the said lighting fixture, and the movement of a movable plate or a disc body by light, infrared rays, a radio | wireless, etc.

  In the lighting fixture, the electrode of the light emitting diode, the metal member, the metal substrate, and the conductive film provided on the substrate or the ceramic substrate are not bonded by wire bonding, but are bonded by solder. In other words, since the vibration and pressure generated by the wire bonding are not transmitted to the lighting fixture, the light emitting diode is not damaged and the bonding strength can be improved. The lighting fixture can be bonded with high reliability by using solder to the respective parts without using wire bonding, so that it is not necessary to fill an insulating member in the vicinity of the light emitting diode, and accordingly, it is strong. Light can be irradiated.

  In the lighting fixture, the light emitting diode is connected in parallel to the substrate, metal substrate, or ceramic substrate, and at least one outlet is provided. When the substrate is a printed wiring board, the plurality of light emitting diodes can be connected in series, but the plurality of light emitting diodes can also be connected in parallel. As the outlet, a conventional one derived from the back side of the synthetic resin substrate, metal substrate, or ceramic substrate can be applied.

  The synthetic resin substrate, the metal substrate, and the ceramic substrate are provided with recesses that are connected to a horizontal portion where a plurality of light emitting diodes are provided. For example, a driving device such as a motor and its control device can be provided in the recess. The concave portion for the ceramic substrate is formed in advance when the green sheet is produced.

(Third invention)
The lighting fixture of the third invention uses an ultraviolet light emitting diode or a blue light emitting diode as the light emitting diode in the surface mount package. The first phosphor layer absorbs part or all of the light emitted from the light emitting diode and emits white light having a color temperature of 4000K to 7100K. The second phosphor layer absorbs part or all of the light emitted from the light emitting diode and emits white light having a color temperature of 2000K to 4000K. When an ultraviolet light emitting diode is used, all ultraviolet rays are absorbed, and white light is obtained by phosphors of three colors of red (R), green (G), and blue (B). The ultraviolet light emitting diode absorbs a part of ultraviolet light, and mixes phosphors emitting blue and yellow, and phosphors emitting red if necessary, to obtain reddish white light. In particular, the second phosphor has many red light emitting components. When a blue light emitting diode is used, a part of the blue light is absorbed, and the green and red phosphors emit white light. The blue light-emitting diode absorbs a part of blue light and turns it into white light with a phosphor mixed with yellow and, if necessary, red. As the second phosphor, a phosphor having a large red light emitting component that increases red is selected.

  The movable plate or the movable disc is provided with a first phosphor layer and a second phosphor layer and moved to a predetermined distance, thereby converting the blue light emitting diode into a color that feels warm and a color that feels cold. be able to. UV light-emitting diodes or blue light-emitting diodes use a phosphor layer that contains blue, green, and red phosphors that absorb ultraviolet rays to produce almost white color, or that absorb ultraviolet rays to produce blue color. Even if a body layer and a phosphor layer that absorbs ultraviolet rays and the blue color to develop green and red colors, substantially white light can be emitted. The white light can be converted into a desired color such as a warm color or a cold color simply by changing the phosphor layer.

(Fourth invention)
In the lighting device according to the fourth aspect of the invention, the color temperature difference between the first phosphor layer and the color temperature of the second phosphor layer is 1000K. It has been discovered that the color temperature difference is sufficient to recognize warm colors and cool colors.

(Fifth invention)
In the lighting fixture of the fifth invention, the light emitting diode is a gallium nitride-based upper / lower electrode type light emitting diode, mounted on a surface mount type package, and attached to a substrate. The gallium nitride based upper / lower electrode type light emitting diode is formed, for example, from the bottom to the lower electrode, the substrate, the n-type gallium nitride based semiconductor layer, the quantum well structure type active layer, the p-type gallium nitride based semiconductor layer, and the upper partial electrode. Has been. The gallium nitride-based upper / lower electrode type light emitting diode not only facilitates bonding of each electrode and metal member with solder, but also provides good heat dissipation and high luminance even when a large current (eg, 350 mA) is applied. .

  1 (a) to 1 (d) are embodiments of the present invention, (a) is a diagram showing a mounting state of a surface mount type package, (b) is a diagram for explaining a surface mount type package, and (c) is different. The figure explaining the disc body in which the fluorescent substance film is formed, (d) is sectional drawing of a lighting fixture. In FIG. 1 (a), the luminaire comprises at least a substantially cylindrical housing 11, a surface mount package 12 attached to the housing 11, and a disc body 13 provided in an opening of the housing. Has been. The lighting fixture is an example in which six surface mount packages 12 are attached to a housing 11. The disc body 13 does not necessarily have a circular shape, and may be oval or square.

  Similarly, the housing 11 can have a circular shape, an elliptical shape, or a rectangular shape other than the shape shown in FIG. The housing 11 is formed with conductive films 112, 112 ′,... For supplying power to the surface mount package 12. The conductive film 112, 112 ′,... Is connected to a socket 113 in a part of the ring-shaped substrate 111, for example. When the ring-shaped substrate 111 is a synthetic resin insulating member or a ceramic member, a plurality of electrically conductive films 112 are formed which are electrically insulated. The ring-shaped substrate 111 can be a so-called printed wiring board. A metal substrate may be used instead of the conductive film.

  Further, when the ring-shaped substrate 111 is a metal substrate, the ring-shaped substrate 111 is configured in a ring shape through an insulating member or a space. The ring-shaped substrate 111 is connected in series via the six surface mount packages 12 and reaches the socket 113. The ring-shaped substrate 111 may be formed with a conductive film 112 so as to connect the surface mount package 12 in parallel.

  In FIG. 1B, the surface-mount package 12 includes at least a substrate 111, a conductive film or metal substrate 112, 112 ′, a light emitting diode 121, a metal member 122, and a reflection frame 123. The light emitting diode 121 is, for example, a gallium nitride upper / lower electrode type light emitting diode, and a lower electrode is joined to the conductive film 112 by solder. The upper partial electrode of the gallium nitride upper / lower electrode type light emitting diode is joined to the other conductive film 112 ′ through a metal member 122.

  A reflective frame 123 is joined to the conductive films 112 and 112 ′ by a silicone resin, epoxy resin, polyimide resin, glass, or brazing adhesive. The number of the light emitting diodes 121 is, for example, six in FIG. 1A and is connected in series via the conductive films 112 and 112 ′, but the number can be arbitrarily increased or decreased. The reflection frame 123 may be a member made of, for example, alumina, a composite ceramic of alumina and glass, or the like.

  In FIG. 1C, the disc body 13 is movably attached to the opening of the housing 11 although not shown. The disc body 13 is formed with phosphor films 131 and 132 that alternately absorb light of different wavelengths at equal intervals. For example, the phosphor film 131 has a daylight color (incandescent light bulb color), and the phosphor film 132 has a cold light color (blue fluorescent lamp color). The disc body 13 is moved automatically or manually by a predetermined angle to partially absorb the light in the light emitting diode 121 and emit light of different colors. That is, the lighting device can be changed into warm light or cool light by irradiating light of different colors from the same light source by movement of the disk body 13.

  In FIG. 1D, the housing 11 is composed at least of a recess 114 and a substrate 111, for example. The shape and structure of the housing 11 is not limited to that shown in FIG. 1 (d), but includes a surface mount package 12, a disk body 13, a motor 14 for driving the disk body 13, and the like. . For example, six surface mount packages 12 shown in FIG. 1B are attached to the substrate 111. The recess 112 houses at least a motor 14 for moving the disk body 13 and a control circuit 142 for the motor 14. The motor 14 is formed of, for example, a stepping motor or the like, and moves the disc body 13 through a motor shaft 141 by a predetermined angle in response to a command from the control circuit 142 to move the phosphor film 131 or the phosphor film 132. You can choose. Further, the housing 11 has the disc body 13 attached to the opening in a movable state.

  The shape of the housing 11 does not necessarily need to be provided with the recess 112 and the motor 14, and the disk body 13 can be moved manually. Moreover, the housing 11 and the disk body 13 do not necessarily have to be circular, and can be moved in parallel rather than rotating as a square or an ellipse. Further, when the motor 14 and the control circuit 142 are used, it is convenient that the phosphor film can be selected by a command from the light control device of the lighting fixture.

  The shape of the housing 11 in FIG. 1 is not limited to these shapes such as a tubular shape, a tubular shape and a rectangular shape, but includes an elliptical shape, a square shape, a rectangular shape, and other deformed shapes. The phosphor film can also be provided directly on the surface mount package 12 without a frame. The surface mount type package 12 is, for example, a square of 10 mm × 10 mm, and the width of the slit 13 between them is 0.5 mm. The gallium nitride upper / lower electrode type light emitting diode 11 has a size of 1.0 mm × 1.0 mm and a thickness of 0.5 mm.

  The metal member 122 that connects the electrode of the light emitting diode 121 and the conductive film 112 ′ is, for example, a gold ribbon, has a thickness of 25 μm and a width of 150 μm, and can be increased or decreased around the length. Since the gold ribbon is made of strip-shaped gold, heat conduction is good and a large current can flow. Further, since the gold ribbon reflects light well, it can efficiently radiate light to the outside without making a shadow.

  The gallium nitride based upper / lower electrode type light emitting diode 121 has, for example, an active layer between a p-type gallium nitride semiconductor layer and an n-type gallium nitride semiconductor layer. The gallium nitride gallium nitride upper / lower electrode type light emitting diode has an upper surface light emitting portion and a partial electrode on the upper side of the one semiconductor layer, and a lower electrode joined to the package electrode on the lowermost layer of the other semiconductor layer. .

  The upper surface of the electrode in the gallium nitride based upper / lower electrode type light emitting diode of the present invention has fine irregularities, and high luminance can be obtained by flowing a large current.

  The gallium nitride based upper / lower electrode type light emitting diode of the present invention uses an ultraviolet light emitting diode or a blue light emitting diode. The first phosphor layer absorbs part or all of the light emitted from the light emitting diode and emits white light having a color temperature of 4000K to 7100K. The second phosphor layer absorbs part or all of the light emitted from the light emitting diode and emits white light having a color temperature of 2000K to 4000K.

  The movable plate or the movable disc provided in the opening of the housing is provided with a first phosphor layer and a second phosphor layer, and is moved by a predetermined distance so that the blue light-emitting diode feels warm. Can be converted into colors that feel cold. An ultraviolet light emitting diode or a blue light emitting diode emits almost white using a phosphor layer containing a phosphor that absorbs ultraviolet rays and develops blue, green, and red, or fluorescence that absorbs ultraviolet rays and colors blue Even when a body layer and a phosphor layer that absorbs ultraviolet rays and the blue color to develop green and red colors, substantially white light can be emitted. The white light can be converted into a desired color such as a warm color or a cold color simply by changing the phosphor layer.

  In the lighting fixture, the color temperature difference between the first phosphor layer and the second phosphor layer is set to 1000K. The color temperature difference can sufficiently recognize a warm color and a cool color.

  FIG. 2A is a second embodiment of the present invention, FIG. 2A is a diagram showing a state where a surface mount package is attached to the lighting fixture, and FIG. 2B is a side view of the lighting fixture. 2A and 2B, the shape of the housing 22 and the shape of the movable body or the disk body 21 are different from those in FIG. The housing 22 is configured to be thin, and is formed with a slit 24 in which a part of the movable body or the disk body 21 can move, for example, to the left and right.

  In addition, the movable body or the disk body 21 is configured such that the protrusion 25 can move within the slit 24. The movable body or disc body 21 can be placed at a position corresponding to the light-emitting diode 121 by moving the movable body or the disk body 21 by the protrusion 25. The lighting fixture can irradiate daylight color and cool color light by moving the protrusion 25.

  FIG. 3 is a diagram showing a state where a surface mount package is attached to a lighting fixture according to a third embodiment of the present invention. In FIG. 3, the luminaire is different from that in FIG. 2 in that a movable body or disk 31 is driven by a motor 34. The control circuit 342 of the motor 34 selects, for example, the phosphor layers 131 and 132 shown in FIG. 1C by rotating according to a command from a light control device (not shown), and changes the daylight color. Cool color light can be irradiated.

  In the conventional GaN-based upper / lower electrode type light emitting diode, when ultrasonic wire bonding is used for bonding the upper electrode and the metal substrate, about 10% of defective products with defective light emission are generated. Further, the gallium nitride based upper / lower electrode type light emitting diode was burned due to an abnormal conduction of about 4% when 350 mA was applied. In the examples of the present invention, since bonding was performed by solder via a gold ribbon, no defective product was generated even when current was applied from 350 mA to 500 mA.

  The gallium nitride based upper / lower electrode type light emitting diode (blue) of the above embodiment is one that emits blue light with a wavelength of 450 nm, with the light emitting surface processed into irregularities, so that a current of 3.2 V and 350 mA flows and the luminous intensity of blue light Was measured to be 5000 mcd to 5700 mcd. The conventional light emitting surface is not roughened, and those sealed with silicone-based elastomer type and gel type fillers have a decrease in luminous intensity of about 600 mcd to 900 mcd.

  Also, a phosphor film in which europium-based yellow phosphor is blended with silicone resin is bonded to the step on the top of the reflector, and white light is emitted by the blue color of the light emitting diode and the yellow light emitted by the phosphor. In addition, when the current of 3.2 V and 350 mΛ was passed to measure the luminous intensity of white light, the example was 25800 to 26900 mcd, and the comparative example was 21600 to 23600 mcd.

  When the luminous flux was measured at the same time, the example was 67.6-74.2 lumens and the average was 70.5 lumens, and the comparative example using the elastomer type sealing material was 57.4-64.0 lumens. Lumen, average 60 lumens, and comparative examples using gel-type encapsulants were 60.2-63.1 lumens, average 61.5 lumens. The white light flux of the example was an increase of 14.6 to 17.5% compared to the comparative example. The light intensity was measured using an LHD tester manufactured by Fukuko System Co., Ltd., and the light flux was measured using a flux meter manufactured by LABSPHERE.

  Next, a blending example of phosphors in the first phosphor film and the second phosphor film will be described. The first phosphor film has a color temperature of 5000 K when, for example, 33% by weight of an orange and green blended product manufactured by Intematex and the rest is made of silicon resin. Similarly, yellow 26 manufactured by Intematex is used. When the weight percentage was 1.2% by weight made by Sarnoff, 1.5% by weight made by Mitsubishi Chemical Co., Ltd., and 1.5% by weight was made of silicon resin, the color temperature was 6800K. The second phosphor film has a color temperature of 10.5% by weight made by Intematex, 10% by weight made by Mitsubishi Chemical, 15% by weight green made by Sarnoff, and the rest made of silicon resin. It was 2600K. In this case, the thicknesses of the first phosphor film and the second phosphor film were both 260 μm.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example. The present invention can be modified in various ways without departing from the scope of the claims. Although this embodiment is described with a pair of insulated metal substrates or package electrodes, a plurality of gallium nitride upper and lower electrode type light emitting diodes and package electrodes are connected in series and / or in parallel. It goes without saying that it can be done. As the phosphor layer and the gallium nitride upper / lower electrode type light emitting diode used in the present invention, known or well-known ones can be used.

(A) to (d) are examples of the present invention, (a) is a diagram showing the mounting state of a surface mount package, (b) is a diagram illustrating a surface mount package, and (c) is a different phosphor. The figure explaining the disc body in which the film | membrane is formed, (d) is sectional drawing of a lighting fixture. Example 1 (A) is a 2nd example of the present invention, (a) is a figure showing the state where a surface mount type package is attached to a lighting fixture, and (b) is a side view of the lighting fixture. (Example 2) In 3rd Example of this invention, it is a figure which shows the attachment state of a surface mount type package to a lighting fixture. (Example 3)

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Housing 111 ... Board | substrate 112, 112 '... Conductive film 12 ... Surface mount type package 121 ... Light emitting diode 122 ... Metal member 123 ... Reflective frame 13 ... Circle Plate body 131, 132 ... phosphor film 14 ... motor 141 ... motor shaft 142 ... control circuit

Claims (5)

A housing;
A substrate provided in the housing;
A light emitting diode assembly having at least one light emitting diode attached to the substrate;
A first phosphor layer provided at a first position corresponding to the plurality of light emitting diode assemblies, and a second fluorescence provided at a second position corresponding to the plurality of light emitting diode assemblies. A movable plate provided on the housing capable of changing a body layer from the first position to the second position;
A movable device that moves the movable plate to the first position and the second position;
A lighting apparatus comprising at least A substantially cylindrical housing;
A ring-shaped substrate provided in the housing;
A plurality of surface mount packages attached to the ring substrate;
A first phosphor layer provided at a first position corresponding to the plurality of surface-mount packages, and a second fluorescence provided at a second position corresponding to the plurality of surface-mount packages. A disk body provided in the housing, the body layer of which can be changed from the first position to the second position;
A movable device for moving the disc body to the first position and the second position;
A lighting apparatus comprising at least The light emitting diode in the surface mount package is an ultraviolet light emitting diode or a blue light emitting diode,
The first phosphor layer absorbs part or all of the light of the light emitting diode, and emits white light having a color temperature of 4000K to 7100K,
The said 2nd fluorescent substance layer absorbs a part or all of the light of the said light emitting diode, and light-emits white light of color temperature 2000K to 4000K, It is described in Claim 1 or Claim 2 characterized by the above-mentioned. Lighting equipment.   The color temperature of the white light emitted from the first phosphor layer is different from the color temperature of the white light emitted from the second phosphor layer by 1000K or more. Item 3. A lighting apparatus according to item 2.   5. The light emitting diode according to claim 1, wherein the light emitting diode is a gallium nitride-based upper / lower electrode type light emitting diode, mounted on a surface mount package, and attached to the substrate. Lighting fixtures.

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