JP2003086006A - Led lighting system - Google Patents

Led lighting system

Info

Publication number
JP2003086006A
JP2003086006A JP2001276018A JP2001276018A JP2003086006A JP 2003086006 A JP2003086006 A JP 2003086006A JP 2001276018 A JP2001276018 A JP 2001276018A JP 2001276018 A JP2001276018 A JP 2001276018A JP 2003086006 A JP2003086006 A JP 2003086006A
Authority
JP
Japan
Prior art keywords
led
lighting device
light distribution
leds
ceiling surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001276018A
Other languages
Japanese (ja)
Other versions
JP4565307B2 (en
Inventor
Itsuoki Moriyama
Kozo Ogawa
Keiichi Shimizu
Wakako Tanabe
光三 小川
厳興 森山
圭一 清水
和佳子 田邉
Original Assignee
Toshiba Lighting & Technology Corp
東芝ライテック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Lighting & Technology Corp, 東芝ライテック株式会社 filed Critical Toshiba Lighting & Technology Corp
Priority to JP2001276018A priority Critical patent/JP4565307B2/en
Publication of JP2003086006A publication Critical patent/JP2003086006A/en
Application granted granted Critical
Publication of JP4565307B2 publication Critical patent/JP4565307B2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/007Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33Elongate light sources, e.g. fluorescent tubes curved annular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

PROBLEM TO BE SOLVED: To reduce thickness of LED lighting system for reducing projection downward from a ceiling surface and not deteriorating appearance of the ceiling part when the LED lighting system is directly attached on a ceiling surface of an indoor passage as a lighting system for lightening. SOLUTION: The LED lighting system is provided with plural LEDs 4 and a lighting device 3 controlling LED 4 lighting, the LEDs 4 are arranged in a roughly same plane with the lighting device 3 and around the lighting device 3. Accordingly, the lighting device 3 and the LEDs 4 are in an arrangement condition that the lighting device 3 and LEDs 4 don't overlap in a vertical direction of a direction of light emission from the LEDs 4 and thickness of the LED lighting system is reduced. Accordingly, when the LED lighting system is attached on the ceiling surface of the indoor passage or the like for lightening, dimension of downward projection is reduced even if the same is directly attached on the ceiling surface, appearance of the ceiling part is not deteriorated.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED as a light source.
The present invention relates to an LED lighting device using the same. 2. Description of the Related Art Conventionally, a lighting device for lighting is provided on a ceiling surface of an indoor passage such as a hotel or an office building. When such a lighting device is directly mounted on the ceiling surface, the lighting device projects downward from the ceiling surface, and the beauty of the ceiling portion is impaired. [0003] Therefore, as a lighting device for lighting mounted on a ceiling surface of an indoor passage or the like, a downlight in which a hole is formed in the ceiling surface and embedded in the hole is widely used. According to this downlight, there are almost no members protruding from the ceiling surface, or the dimensions of the members protruding downward from the ceiling surface are extremely small, so that the beauty of the ceiling portion is not spoiled. [0004] However, when a downlight is used, a large hole for embedding the downlight must be formed in the ceiling surface, and the drilling work is troublesome. SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting device to be mounted on a ceiling surface of an indoor passage or the like for skylight, which can be directly mounted on the ceiling surface without making a large hole in the ceiling surface, and which is directed downward from the ceiling surface. An object of the present invention is to provide an LED lighting device capable of reducing the size of the LED lighting device. [0006] According to the present invention, L
The ED lighting device includes a plurality of LEDs; and a lighting device that controls the lighting of the LEDs. The LEDs are disposed in substantially the same plane as the lighting device and around the lighting device. Here, in the present invention and the following invention,
The lighting device is a rectifier circuit that converts AC current to DC current,
It means a device that includes a capacitor or a resistor as a protection element. Therefore, the lighting device and the LED are LE
The LED illuminating device is made thinner so that it does not overlap in the vertical direction, which is the direction in which light from D is emitted. For this reason, when this LED lighting device is mounted on a ceiling surface such as an indoor passage and used for lighting, even if it is directly mounted on the ceiling surface, the size protruding downward is reduced, and the beauty of the ceiling portion is not spoiled. In addition, it is only necessary to make a small hole for passing a power supply line for power supply or the like on the ceiling surface, and it is possible to easily perform a drilling process on the ceiling surface without trouble. The LED lighting device according to the second aspect of the present invention
A plurality of LEDs; and a lighting device for controlling lighting of the LEDs; wherein the lighting devices are disposed in substantially the same plane as the LEDs and around the LEDs. Therefore, the lighting device and the LED are LE
The LED illuminating device is made thinner so that it does not overlap in the vertical direction, which is the direction in which light from D is emitted. For this reason, when this LED lighting device is mounted on a ceiling surface such as an indoor passage and used for lighting, even if it is directly mounted on the ceiling surface, the size protruding downward is reduced, and the beauty of the ceiling portion is not spoiled. In addition, it is only necessary to make a small hole for passing a power supply line for power supply or the like on the ceiling surface, and it is possible to easily perform a drilling process on the ceiling surface without trouble. According to a third aspect of the present invention, in the LED lighting device according to the first or second aspect, a hook sealing cap having a hook blade is provided as a portion to be supplied with power from a power supply. Therefore, this LED lighting device can be easily mounted on the ceiling surface by fitting the hook blades into the hook blade receiving holes of the hook sealing body mounted on the ceiling surface. Since the LED lighting device is designed to be thin, even if the power supply structure uses a hooking sealing cap, the LE mounted on the ceiling surface can be used.
The size of the D lighting device projecting downward from the ceiling surface is reduced, and the beauty of the ceiling portion is not impaired. [0013] The invention according to claim 4 is the invention according to claims 1 to 3.
In the LED lighting device according to any one of the above,
And a light distribution control member disposed on the radiation side of the light from D. Here, in the present invention and the following invention,
The light distribution control member includes a Fresnel lens, a prism sheet, and the like. The Fresnel lens can be used for narrow-angle light distribution for condensing light or for wide-angle light distribution for diffusing light by turning the lens upside down. In addition, since the focal length of the Fresnel lens can be reduced, this Fresnel lens is
The LED lighting device can be arranged close to the ED, and the thickness of the LED lighting device equipped with a Fresnel lens as a light distribution control member can be reduced. The prism sheet can change the direction of light hitting the prism sheet. In addition, by superposing two or more prism sheets and changing the superposition angle, the number of LEDs when viewed from below can be increased to be greater than the number of actually existing LEDs. It is possible to increase the illuminance directly below the lighting device. Therefore, by using such a light distribution control member, various light distribution controls can be performed on the light emitted from the LED. According to a fifth aspect of the present invention, there is provided L
In the ED lighting device, the LEDs are intermittently arranged in a ring shape, and a narrow-angle light distribution unit and a wide-angle light distribution unit are alternately formed on the light distribution control member along the direction in which the LEDs are arranged. The light distribution control member is provided to be rotatable between a position where the narrow-angle light distribution unit faces the LED and a position where the wide-angle light distribution unit faces the LED. Here, the narrow-angle light distribution unit has a function of condensing light emitted from the LED, and the wide-angle light distribution unit includes an LED.
It has the function of diffusing light emitted from. Therefore, the light distribution control member is rotated and switched,
By locating the narrow-angle light distribution unit so as to face the LED, light emitted from the LED can be collected directly below, and the wide-angle light distribution unit is positioned to face the LED. Thus, light emitted from the LED can be diffused, and one light distribution control member can be used for light collection and diffusion. The invention according to claim 6 is the first to fifth aspects.
In the LED lighting device according to any one of the above,
D is a large current type LED. Here, the large current type LED has an area of a semiconductor chip which is larger than that of a conventional type LED by introducing a new packaging technology. For this reason,
Compared with the conventional type LED, a large current can be passed and high-luminance light can be emitted. In particular,
While the conventional type LED has a current of 20 to 30 mA when the DC applied voltage is in the range of 2 to 4 V, a large current of 200 to 250 mA can be flowed in the range of the DC applied voltage of 2 to 4 V. In addition, the conventional type of LED emits a small amount of light, so that the emission angle is condensed in the range of 5 to 30 ° to provide directivity.
In the case of D, the current can flow about 10 times that of the conventional type LED and the amount of light increases about 10 times, so that a wide angle light distribution with a radiation angle of about 120 ° can be achieved. Therefore, by using such a high-current LED, a sufficient amount of light can be secured even when the number of high-current LEDs used is reduced. FIG. 1 shows a first embodiment of the present invention.
A description will be given with reference to FIG. Figure 1 shows LE on the ceiling
FIG. 2 is an exploded perspective view, FIG. 3 is a perspective view seen from the back side, and FIG. 4 is a longitudinal front view illustrating light distribution control by a light distribution control member. In this LED lighting device, a power supply unit 2 is attached to a substantially central portion of one surface of a disc-shaped base plate 1, and a lighting device 3 is attached to a substantially central portion of the other surface of the base plate 1. ing. Further, on the other surface of the base plate 1, a large current type LED, which is a plurality of LEDs that are intermittently positioned at equal intervals around the lighting device 3, substantially in the same plane as the lighting device 3.
4 are arranged. The power supply unit 2 is a part to which the power supply line 5 is connected and to which electric power necessary for lighting the large current type LED 4 is supplied.
The circuit includes elements and circuits necessary for lighting the LED, such as a rectifier circuit for converting an AC current to a DC current, and a capacitor and a resistor as protection elements. Each of the power supply unit 2 and the lighting device 3 has a cylindrical outer shape, and the diameter of the power supply unit 2 is smaller than the diameter of the lighting device 3. The large current type LED 4 is a conventional type LED.
In comparison, the area of semiconductor chips has been increased by the introduction of new packaging technology. For this reason, compared with the conventional type LED, a large current can be flowed and high-luminance light can be emitted. More specifically, the conventional type LED has a DC applied voltage of 20 to 30 in a range of 2 to 4 V.
mA was applied, while the DC applied voltage was 2 to 2.
A large current of 200 to 250 mA can flow in the range of 4V. In addition, since the amount of emitted light is small in the conventional type LED, the radiation angle is condensed in the range of 5 to 30 ° to provide directivity. About 10 times the current, and the amount of light increases about 10 times.
A wide-angle light distribution of 20 ° can be obtained. Power supply unit 2, lighting device 3, high-current LED 4
Is attached to the ceiling surface 7 with mounting screws 6 as shown in FIG. A screw portion 8 is formed on the outer peripheral portion of the base plate 1, and a light distribution control member 9 disposed on the side of emitting the light from the large current type LED 4 is fitted and attached to the screw portion 8. ing. The light distribution control member 9 includes a lighting device 3 and a large current type L
The light distribution control member 9 is formed in a cap shape that covers the ED 4, and a portion facing the large current type LED 4 in the light distribution control member 9 includes:
The narrow-angle light distribution sections 9a and the wide-angle light distribution sections 9b are alternately formed along the arrangement direction of the large-current LEDs 4 by the same number as the large-current LEDs 4. The narrow-angle light distribution section 9a is a large current type LE
The wide-angle light distribution unit 9b has a function of diffusing light emitted from the large current type LED 4, and has a function of condensing the light emitted from the D4 directly downward.
The wide-angle light distribution unit 9b and the wide-angle light distribution unit 9b both use a Fresnel lens and are turned upside down. The light distribution control member 9 can be rotated in the forward and reverse directions while maintaining the fitted state with the screw portion 8,
By this rotation operation, the light distribution control member 9 is moved to the narrow angle light distribution section 9a.
Is located at a position facing the high-current LED 4 and at a wide-angle light distribution section 9b.
Can be switched to a position facing the large current type LED 4. The LED lighting device is directly mounted on the ceiling surface 7 as shown in FIG. 1, and the ceiling surface 7 on which the LED lighting device is mounted has an insertion hole 1 into which the power supply unit 2 is inserted.
0 is formed. Power supply unit 2 inserted in insertion hole 10
, A power supply line 5 for power supply is connected. In such a configuration, the LED lighting device has the same surface as the lighting device 3 and a plurality of high-current LEDs 4 disposed around the same surface. In a non-overlapping arrangement,
It is thinner. For this reason, when this LED lighting device is mounted on a ceiling surface 7 such as an indoor passage and used for lighting, even if it is directly mounted on the ceiling surface 7, the size of the LED lighting device projecting downward becomes small, and the beauty of the ceiling portion may be impaired. Absent. Further, it is only necessary to make a small-diameter insertion hole 10 for inserting the power supply unit 2 in the ceiling surface 7, and it is possible to easily form a hole in the ceiling surface 7 without trouble. Moreover, the insertion hole 10 is a portion that is covered by the LED lighting device mounted on the ceiling surface 7 and cannot be seen from below, so that finishing work for improving aesthetic appearance is unnecessary. The LED lighting apparatus is provided with a light distribution control member 9 having a narrow-angle light distribution section 9a and a wide-angle light distribution section 9b. As a result, the narrow-angle light distribution section 9a faces the large-current LED 4 to perform condensing illumination downward as shown in FIG. 4A, and the wide-angle light distribution as shown in FIG. The state can be switched to a state in which the unit 9b faces the high-current LED 4 to perform diffused illumination. This makes it possible to perform optimal illumination as needed. In addition, the switching operation can be performed by a simple operation of turning the light distribution control member 9 by a slight angle. Next, a second embodiment of the present invention will be described with reference to FIG.
It will be described based on. 1 to 4 are denoted by the same reference numerals, and description thereof is omitted (the same applies to the following embodiments). LE of the present embodiment
The basic structure of the D lighting device is the same as that of the LED lighting device of the first embodiment, and different parts are a lighting device 3 attached to the other surface of the base plate 1 and a plurality of high-current LEDs 4. This is the arrangement state. In the present embodiment, the large current type LED 4 is arranged at a position near the center, and the lighting device 3 is arranged around it. Correspondingly, the positions of the narrow-angle light distribution section 9a and the wide-angle light distribution section (not shown) formed on the light distribution control member 9 and opposed to the large current type LED 4 are also located near the center. has been edited. In such a configuration, in the LED lighting device of the present embodiment, the lighting device 3 includes a plurality of large current type L
The lighting device 3 and the high-current-type LED 4 are arranged in the same plane as the ED 4 and around the high-current-type LED 4 so that they do not overlap with each other in the vertical direction. For this reason, this LED lighting device can be used on ceiling surfaces 7 such as indoor passageways.
When it is mounted on the ceiling surface and used for skylight, the size of the downward projection is small even when it is directly mounted on the ceiling surface 7, and the aesthetic appearance of the ceiling portion is not impaired. Further, it is only necessary to make a small-diameter insertion hole 10 for inserting the power supply section 2 in the ceiling surface 7, and it is possible to easily form a hole in the ceiling surface 7 without trouble. Moreover, the insertion hole 10 is a portion that is covered by the LED lighting device mounted on the ceiling surface 7 and cannot be seen from below, so that finishing work for improving aesthetic appearance is unnecessary. Next, a third embodiment of the present invention will be described with reference to FIG.
It will be described based on. In the present embodiment, a hook sealing cap 12 having a hook blade 11 is provided on one surface side of the base plate 1 as a portion to receive power supply from a power supply. As in the first or second embodiment, a lighting device and a high-current LED (both not shown) are attached to the other surface of the base plate 1 as in the first or second embodiment. In such a configuration, the LED lighting device of the present embodiment has the hooking blade 11 inserted into the hooking blade receiving hole (not shown) of the hooking sealing body (not shown) attached to the ceiling surface 7. The fitting to the ceiling surface 7 is performed by fitting. And this LED lighting device is the first
Or, since the thickness is reduced as in the second embodiment, even if the power supply structure uses the hooking sealing cap 12, the LED lighting device attached to the ceiling surface 7 faces downward from the ceiling surface 7. The size of the protrusion is reduced, and the LED lighting device can be directly mounted on the ceiling surface 7 without impairing the beauty of the ceiling portion. Next, a fourth embodiment of the present invention will be described with reference to FIG.
It will be described based on. In this embodiment, two prism sheets 13 are used as light distribution control members. The two prism sheets 13 are superposed and a large current type L
The prism sheet 13 is arranged on the radiation side of the light from the ED 4, one of the prism sheets 13 is fixedly mounted, and the other prism sheet 13 is rotatably adjusted. In such a configuration, the number of visible high-current type LEDs 4 actually exists by adjusting the rotation of the prism sheet 13 whose rotation is freely adjustable and adjusting the overlapping angle of the two prism sheets 13. High current LED
The number can be increased to four or more, and the illuminance can be adjusted. FIG. 7A shows a state in which the prism sheet 13 is not attached, and an actual number of large current type LEDs 4 can be seen. FIG. 7B shows a state in which the two prism sheets 13 are arranged on the radiation side of the light from the large current type LED 4 and the rotation angles of the two prism sheets 13 are set to a certain angle. The number of large current type LEDs 4 appears to be doubled. FIG. 7C shows a state in which the rotation angles of the two prism sheets 13 are changed, and the number of the large current type LEDs 4 appears to be four times larger.
It is up compared to (b). According to the LED lighting device of the first aspect of the present invention, since the plurality of LEDs are arranged substantially in the same plane as the lighting device and around the lighting device, the LED lighting device has LED
Are placed so that they do not overlap in the vertical direction, which is the direction in which light is emitted from the LED. This LED lighting device is thinned, so this LED lighting device is mounted on a ceiling surface such as an indoor passage and used for lighting. If it is installed directly on the ceiling surface, the size that protrudes downwards will be small, and it will not impair the beauty of the ceiling part.
All that is required is to drill a small hole for the power supply line for power supply, etc., and it is easy to drill a hole in the ceiling without any hassle. According to the LED lighting device of the second aspect of the present invention, since the lighting device is disposed substantially in the same plane as the plurality of LEDs and around the LED, the lighting device and the LED are separated from the LED. When the LED lighting device is mounted on a ceiling surface such as an indoor passageway and used for lightening, the LED lighting device is not arranged in the vertical direction which is the direction of light emission. Even if it is directly mounted on the ceiling, the size that protrudes downwards is reduced, so that the beauty of the ceiling part is not impaired, and on the ceiling surface, only a small hole for passing the power supply line for power supply etc. needs to be drilled,
Drilling on the ceiling surface can be done easily and without any hassle. According to the third aspect of the present invention, in the LED lighting device according to the first or second aspect, a hooking sealing cap having a hooking blade is provided as a portion to be supplied with power from a power supply. The device can be easily installed on the ceiling surface by fitting the hook blade into the hook blade receiving hole of the hook sealing body attached to the ceiling surface, and the power supply using such a hook sealing cap L mounted on the ceiling surface even with a structure
Since the size of the ED lighting device projecting downward from the ceiling surface is reduced, the beauty of the ceiling portion is not impaired. According to a fourth aspect of the present invention, in the LED lighting device according to any one of the first to third aspects, L
Since the light distribution control member is provided on the emission side of the light from the ED, various light distribution controls can be performed on the light emitted from the LED by using such a light distribution control member. Thus, it is possible to increase the illuminance just below the LED lighting device, and to widen the illumination range of the LED lighting device. According to a fifth aspect of the present invention, in the LED lighting device according to the fourth aspect, the LEDs are intermittently arranged in a ring shape, and the light distribution control member is arranged along a direction in which the LEDs are arranged. A narrow-angle light distribution unit and a wide-angle light distribution unit are alternately formed, and the light distribution control member is configured such that the narrow-angle light distribution unit includes the LE.
The light distribution control member is rotationally switched between the position facing D and the position where the wide-angle light distribution unit is facing the LED, so that the narrow-angle light distribution unit faces the LED. The light radiated from the LED can be collected by directing the light emitted from the LED to the position directly below, and the light radiated from the LED can be diffused by positioning the wide-angle light distribution unit to face the LED. Thus, one light distribution control member can be selectively used for condensing light and for diffusing light. According to the sixth aspect of the present invention, in the LED lighting device according to any one of the first to fifth aspects, since the LED is a large current type LED, such a large current type LED is used. To use the large current type LE
Even when the number of D's is reduced, the required light amount can be sufficiently ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional front view showing an attached state of an LED lighting device according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view showing the LED lighting device. FIG. 3 is a perspective view of the LED lighting device as viewed from the back side. FIGS. 4A and 4B are longitudinal front views illustrating light distribution control by a light distribution control member, where FIG.
(B) is a light distribution state by the wide-angle light distribution unit. FIG. 5 is a vertical sectional front view showing an attached state of an LED lighting device according to a second embodiment of the present invention. FIG. 6 is a perspective view of an LED lighting device according to a third embodiment of the present invention as viewed from the back side. FIG. 7 is a bottom view showing how LEDs are viewed by switching a prism sheet in an LED lighting device according to a fourth embodiment of the present invention. [Description of Signs] 3: Lighting device 4: LED, high current type LED 9: Light distribution control member 9a: Narrow angle light distribution unit 9b: Wide angle light distribution unit 11: Hook blade 12: Hook ceiling cap

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F21V 23/02 F21Y 101: 02 // F21Y 101: 02 F21S 1/02 GB (72) Inventor Takeshi Moriyama Kochi Ogawa, 3-3-1 Higashishinagawa, Shinagawa-ku, Tokyo (72) Inventor Kozo Ogawa 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo F-term (reference) 3K014 AA01 DA05 EA04

Claims (1)

1. A lighting device for controlling the lighting of the LED, comprising: a plurality of LEDs; and the LED being substantially in the same plane as the lighting device and surrounding the lighting device. LED lighting device arranged in. 2. A lighting device, comprising: a plurality of LEDs; and a lighting device for controlling lighting of the LEDs, wherein the lighting device is substantially in the same plane as the LEDs, and
An LED lighting device arranged around the ED. 3. The LED lighting device according to claim 1, further comprising a hook sealing cap provided with a hook blade as a portion to be supplied with power from a power source. 4. The LED lighting apparatus according to claim 1, further comprising a light distribution control member disposed on a side from which the light from the LED is emitted. 5. The LED is intermittently arranged in a ring shape, and a narrow-angle light distribution section and a wide-angle light distribution section are alternately formed on the light distribution control member along an arrangement direction of the LEDs. The LED lighting device according to claim 4, wherein the light distribution control member is rotatably switched between a position where the narrow-angle light distribution unit faces the LED and a position where the wide-angle light distribution unit faces the LED. . 6. The LED lighting device according to claim 1, wherein the LED is a high-current LED.
JP2001276018A 2001-09-12 2001-09-12 LED lighting device Expired - Fee Related JP4565307B2 (en)

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