JP2004134249A - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
JP2004134249A
JP2004134249A JP2002297765A JP2002297765A JP2004134249A JP 2004134249 A JP2004134249 A JP 2004134249A JP 2002297765 A JP2002297765 A JP 2002297765A JP 2002297765 A JP2002297765 A JP 2002297765A JP 2004134249 A JP2004134249 A JP 2004134249A
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JP
Japan
Prior art keywords
base
substrate
lighting device
opening
plate
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.)
Pending
Application number
JP2002297765A
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Japanese (ja)
Inventor
▲濱▼口 岳久
Takehisa Hamaguchi
Hiroyasu Shiichi
Kenichi Tamura
田村 憲一
私市 広康
Original Assignee
Mitsubishi Electric Corp
三菱電機株式会社
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 Mitsubishi Electric Corp, 三菱電機株式会社 filed Critical Mitsubishi Electric Corp
Priority to JP2002297765A priority Critical patent/JP2004134249A/en
Publication of JP2004134249A publication Critical patent/JP2004134249A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/90Methods of manufacture
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21Y2107/00Light sources with three-dimensionally disposed light-generating elements
    • 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

<P>PROBLEM TO BE SOLVED: To obtain a lighting device in which a light-emitting element and a circuit component for lighting the light-emitting element are arranged in the substrate effectively and which has a simple structure and can be assembled easily. <P>SOLUTION: This is the lighting device which has a cylindrical base part, a spherical cover that has an opening at one end and to the opening of which the above base part is fitted, and a light source of which the base end is fixed to the above base part and the top end side is inserted in the spherical cover. The light source part comprises a plate type substrate at the top end side of which a plurality of light-emitting elements are provided, and a circuit component which is arranged at the base end side of the substrate and lights the light-emitting element. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lighting device using a light emitting element as a light source.
[0002]
[Prior art]
In a conventional bulb-type LED lamp, a base is integrally provided at a reduced-diameter end portion of a bulb, and a stem is erected in the center of the base, and two straight linear members inserted into the stem are provided above the stem. The printed circuit board is electrically connected to the printed circuit board via the pins, and is fixed upright so that the axial direction of the bulb corresponds to the board surface. The printed circuit board is provided so as to be sandwiched between two pins. A plurality of LEDs are provided on the printed board in accordance with the axial and radial directions of the bulb. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Laid-Open Publication No. 3-48252 (pages 5 and 6, FIG. 1)
[0004]
[Problems to be solved by the invention]
As described above, the conventional bulb-type LED lamp is configured by a printed board and a stem on which the LED is provided, and two pins inserted into the stem, and the like.
There is a problem in that the number of parts is large and assembly takes time.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. The number of components is reduced, light-emitting elements and circuit components for lighting the light-emitting elements are effectively arranged on a substrate, and assembly is easy with a simple configuration. It is intended to obtain a simple lighting device.
[0006]
[Means for Solving the Problems]
The lighting device according to the present invention has a cylindrical base portion, a spherical cover having an opening at one end and the base portion being fitted to the opening portion, and a base end fixed to the base portion and a distal end side being the front end. A light source unit inserted into the spherical cover,
The light source unit includes a plate-shaped substrate on which a plurality of light emitting elements are provided on a distal end side, and a circuit component arranged on a base end side of the substrate to turn on the light emitting elements.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is an exploded view of the configuration of a lighting device according to Embodiment 1 of the present invention, FIG. 2 is a configuration diagram showing FIG. 1 in an assembled state, and FIG. 3 is a circuit configuration showing an example of a circuit according to this embodiment. FIG. In FIGS. 1, 2, and 3, the same or corresponding parts are denoted by the same reference numerals.
1 and 2, reference numeral 1 denotes a cylindrical base having a power supply function, 2 denotes a plate-like substrate having a base fixed to the inner bottom surface of the base 1, and 3 denotes a light source attached to the base of the base 2. The circuit component 4 for lighting the light emitting element is mounted on the front end side of the substrate 2 and is, for example, an LED element (hereinafter, referred to as an LED element 4) as the light emitting element. The LED element 4 and a circuit component 3 for lighting the LED element 4 constitute a circuit shown in FIG.
Reference numeral 5 denotes a lead wire for supplying power to a circuit composed of the circuit components 3 and the LED elements 4 attached to the plate-like substrate 2 via the base 1, and 6 denotes an open end at one end of the plate-like shape. A spherical cover that covers the substrate 2, wherein the opening is fitted to the base 1. As shown in FIG. 1, the insertion width (D2) (width in the direction perpendicular to the insertion direction) of the plate-shaped substrate 2 is made smaller than the inner diameter (D1) of the opening of the spherical cover 6 so that The cover 6 can be inserted through the opening.
[0008]
In the circuit configuration shown in FIG. 3, 30 is an AC commercial power supply, 31 is a diode bridge, 32 is an electrolytic capacitor, 33 is a transistor, 34 is a resistor, and 35 is a control circuit.
The AC commercial power supply 30 is full-wave rectified by a diode bridge 31 and is smoothed to DC by an electrolytic capacitor 32. The plurality of LED elements 4 are connected in series, and a transistor 33 and a resistor 34 are connected in series. The control circuit 35 controls the current flowing through the transistor 33 so that the voltage drop of the resistor 34 becomes a predetermined value, whereby the current flowing from the electrolytic capacitor 32 to the LED elements 4 connected in series is controlled to be constant. . In this circuit configuration, a plurality of LED elements 4 connected in series, a series connection circuit of a transistor 33 and a resistor 34 are connected in parallel.
[0009]
In the arrangement of the LED elements 4 attached to the plate-shaped substrate 2 and the circuit components 3 for lighting the LED elements 4, as shown in the assembled state diagram of FIG. The circuit component 3 for lighting the LED element 4 is intensively arranged on a portion of the base end side hidden by the base 1, and a portion not hidden by the base 1, that is, the side of the spherical cover 6 facing the base 1. The LED elements 4 are concentratedly arranged on both front end sides of the plate-shaped substrate 2. The plate-shaped substrate 2 is connected to the base 1 by a lead wire 5, and the AC commercial power supply 30 shown in FIG.
[0010]
As shown in FIG. 2, the adhesive is filled up to, for example, a hatched portion of the base 1, so that the plate-shaped substrate 2 has a base end side on which the circuit components 3 are arranged as the base 1 side. The base 1 is fixed with an adhesive in a state of standing on the inner bottom surface. Then, the spherical cover 6 is covered so as to cover the plate-shaped substrate 2 from the opening, and the opening is fitted to the base 1 to constitute a lighting device.
[0011]
As described above, the insertion width of the plate-like substrate 2 is made smaller than the inner diameter of the opening of the spherical cover 6, and the LED elements 4 and the circuit components for lighting the LED elements 4 are provided on the plate-like substrate 2. 3 is attached and can be inserted through the opening of the spherical cover 6, so that the circuit of the circuit component 3 and the LED element 4 can be easily incorporated in the cover.
In addition, circuit components 3 for lighting the LED elements 4 are intensively arranged in a portion of one plate-shaped substrate 2 which is hidden by the base 1 on the base end side, and a portion which is not hidden by the base 1, that is, faces the base 1. Since the LED elements 4 are centrally arranged on both sides of the plate-shaped substrate 2 on the spherical cover 6 side, a lighting device which is easy to assemble with a simple configuration by effective arrangement can be obtained.
[0012]
In the above embodiment, the light emitting element as the light source is described as an example of the LED element, but the present invention is not limited to this.
[0013]
Embodiment 2 FIG.
4 is an exploded view of the configuration of a lighting device according to Embodiment 2 of the present invention, FIG. 5 is a diagram illustrating a cylindrical substrate 7 of FIG. 4, and FIG. 6 is a partially cut-away state of FIG. FIG. In FIG. 4, the same or corresponding parts as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In FIGS. 4, 5, and 6 of the present embodiment, the same or corresponding portions are denoted by the same reference characters.
[0014]
4, 5 and 6, reference numeral 2 'denotes a plate-like substrate on which the circuit component 3 for lighting the LED element 4 is mounted. Reference numeral 7 denotes a base on which the LED element 4 is disposed on the outer peripheral surface on the tip side. For example, a film-shaped cylindrical substrate having a portion where the LED element 4 is not disposed on the outer peripheral surface on the end side. As shown in FIG. 5, the cylindrical substrate 7 has an LED element 4 attached to the tip side of a film-shaped substrate, and electrically connects the LED elements 4 with a printed circuit pattern 8 to form the film-shaped substrate. The substrate is rounded into a cylindrical shape, and is fixed with an adhesive at a marginal portion indicated by oblique lines to form a cylindrical shape. The cylindrical substrate 7 and the plate-like substrate 2 'are connected by lead wires 5'. In the circuit configuration diagram shown in FIG. 3 of the first embodiment, a circuit configuration in which a plurality of circuits in which the LED elements 4 are connected in series is arranged in parallel, but in the present embodiment, the cylindrical substrate 7 and the In order to reduce the number of lead wires 5 'connecting to the plate-like substrate 2', the configuration is such that the LED elements 4 are connected only in series as shown in FIG. Note that the other parts than the circuit configuration of the LED element 4 are the same as those in FIG. 3 described above, and a description thereof will be omitted. Reference numeral 5 denotes a lead wire for supplying power from the AC commercial power supply 30 shown in FIG.
[0015]
The outer diameter (D3) including the LED elements 4 arranged on the outer peripheral surface of the cylindrical substrate 7 is made smaller than the inner diameter (D1) of the opening of the spherical cover 6, and the LED elements 4 are turned on. The insertion width (D5) (width in the direction perpendicular to the insertion direction) of the plate-like substrate 2 'on which the circuit component 3 is mounted is made smaller than the inner diameter (D4) of the cylindrical substrate 7 so that A plate-shaped substrate 2 ′ is connected to the inside by lead wires 5 ′, and is arranged so that the cylindrical substrate 7 can be inserted through the opening of the spherical cover 6.
[0016]
With the above configuration, as shown in FIG. 6, for example, the adhesive is filled up to the hatched part of the base 1 so that the plate-shaped substrate 2 ′ and the plate-shaped substrate 2 ′ are inside. The cylindrical substrate 7 is fixed with an adhesive in a state where the base end side on which the LED elements 4 are not arranged is set up on the inner bottom surface of the base 1. Then, the spherical cover 6 is covered so as to cover the cylindrical substrate 7 from the opening, and the opening of the spherical cover 6 is fitted to the base 1 to constitute a lighting device.
[0017]
As described above, the circuit component 3 for lighting the LED element 4 was mounted inside the cylindrical substrate 7 having the outer diameter smaller than the inner diameter of the opening of the spherical cover 6 and having the LED element 4 disposed on the outer peripheral surface. Since the plate-shaped substrate 2 'is arranged so that the cylindrical substrate 7 can be inserted from the opening of the spherical cover 6, the circuit of the circuit component 3 and the LED element 4 can be easily incorporated in the cover. Can be. In addition, since the LED elements 4 are concentrated on the outer peripheral surface of the cylindrical substrate 7 and the plate-like substrate 2 ′ on which the circuit components 3 are mounted is arranged inside the cylindrical substrate 7, the arrangement is simplified by effective arrangement. A lighting device that can be easily assembled with a simple configuration can be obtained. Further, since the LED elements 4 are arranged on the outer peripheral surface of the cylindrical substrate 7, a large number of LED elements 4 can be mounted due to the large mounting surface, so that a lighting device with a large amount of light can be obtained and light can be transmitted through 360. An illuminating device that can radiate light uniformly is obtained.
[0018]
In the above embodiment, the light emitting element as the light source is described as an example of the LED element, but the present invention is not limited to this.
[0019]
Embodiment 3 FIG.
7 is an exploded view of a lighting device according to Embodiment 3 of the present invention, FIG. 8 is a diagram of a rectangular substrate 2a to 2c viewed from the side, and FIG. 9 is a diagram of combining rectangular substrates 2a to 2c into, for example, a triangle. FIG. 10 is a perspective view of a tubular substrate, FIG. 10 is a diagram showing a relationship between a circle and an equilateral triangle inscribed, and FIG. 11 is a configuration diagram showing FIG. 7 in an assembled state.
In FIG. 7, the same or corresponding parts as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In FIGS. 7 to 11 of the present embodiment, the same or corresponding portions are denoted by the same reference characters. Further, the circuit configuration of the LED element 4 and the circuit component 3 for lighting the LED element 4 according to the present embodiment is the same as the circuit configuration of FIG. Description is omitted.
[0020]
In FIG. 7, reference numerals 2a, 2b and 2c denote rectangular substrates, and the three rectangular substrates are formed on one side (for example, the front side) as shown in the side views of the rectangular substrates 2a to 2c in FIG. , The LED element 4 is disposed on the distal end side, and the LED element 4 is not disposed on the proximal end side. On the other surface (for example, the back surface), a circuit component 3 for lighting the LED element 4 is arranged on at least one of the three rectangular substrates.
[0021]
Then, as shown in the perspective view of FIG. 9, the three rectangular substrates 2a to 2c are combined such that the base ends of the rectangular substrates are aligned and the surface on which the LED elements 4 are arranged is outside, for example. It is formed in the shape of an equilateral triangle. Then, the LED elements 4 disposed on the rectangular substrates 2a to 2c formed in the shape of a regular triangular cylinder and the circuit components 3 disposed on at least one of the rectangular substrates 2a to 2c shown in FIG. A circuit is configured.
[0022]
When the three rectangular substrates 2a to 2c are formed in an equilateral triangle as described above, the insertion widths (D6) of the rectangular substrates 2a to 2c that can be inserted from the openings of the spherical cover 6 are as follows. This will be described with reference to the diagram shown in FIG. If a perpendicular line is drawn from ∠CAB of the equilateral triangle ABC, a detailed description is omitted, but a right triangle AOC and a similar right triangle COD are configured. In the right triangle AOC, according to Pythagoras's theorem, the length of OC is 1 / of the length of AC, so the length of AO is 3 1/2 × AC / 2, and ∠ of right triangle COD Since the CDO is 60 degrees, tan60 degrees = OC / OD, so that the length of the OD is AC / 2 × 3 1/2 . Accordingly, the diameter AD becomes AO + OD = 2AC / 3 1/2 .
[0023]
Here, assuming that the diameter AD is the inner diameter (D1) of the opening of the spherical cover 6 shown in FIG. 7 and the AC is the width (D6) of the rectangular substrate, the insertion width (D6) (insertion) of the rectangular substrate The width of the spherical cover 6 can be inserted from the opening of the spherical cover 6 if the equilateral triangle is formed by setting the width in the direction perpendicular to the direction to 3 1/2 / 2 or less of the inner diameter (D1) of the opening.
[0024]
In the above-described configuration, as shown in FIG. 11, for example, the adhesive is filled up to the hatched portion of the base 1, and the substrate formed into the cylindrical shape of the equilateral triangle is provided with the LED element 4. The base end side not facing the base 1 is fixed with an adhesive in a state of standing on the inner bottom surface of the base 1. Then, the spherical cover 6 is put over the opening so as to cover the equilateral triangular cylindrical substrate, and the opening of the spherical cover 6 is fitted to the base 1 to constitute a lighting device.
[0025]
As described above, the spherical cover 6 is constituted by three rectangular substrate pieces having a substrate width of not more than √3 / 2 of the inner diameter of the opening, and each of the three rectangular substrate pieces has a surface on one side (for example, The LED element 4 is disposed on the front surface side), and the circuit component 3 for lighting the LED element 4 is provided on at least one of three rectangular substrate pieces on the other surface (for example, the back side). The three rectangular substrate pieces are combined so that the surface on which the LED elements 4 are disposed is located outside, so that an equilateral triangular cylindrical substrate can be inserted through the opening of the spherical cover 6. Therefore, the circuit of the circuit component 3 and the LED element 4 can be easily incorporated in the cover. In addition, since the LED elements 4 are concentrated on the outside of the substrate formed in a regular triangular cylindrical shape, and the circuit components 3 are concentrated on the inside, the assembly is easy and easy to assemble with an effective arrangement. A lighting device is obtained. Further, since the LED elements 4 are arranged outside the substrate formed in the shape of a regular triangular cylinder, a large mounting surface allows a large number of LED elements 4 to be mounted. An illuminating device with a sufficient amount of light can be obtained, and an illuminating device capable of uniformly emitting light by 360 degrees is obtained.
[0026]
In the above embodiment, the three rectangular substrate pieces are combined so that the surface on which the LED elements 4 are arranged is on the outside and the surface on which the circuit components 3 for lighting the LED elements 4 are on is on the inside. Although a triangular cylindrical shape has been described above, the present invention is not limited to this, and may be a polygonal cylindrical shape other than a triangle.
[0027]
In the above embodiment, the light emitting element as the light source is described as an example of the LED element, but the present invention is not limited to this.
[0028]
Embodiment 4 FIG.
FIG. 12 is an exploded view of the configuration of a lighting apparatus according to Embodiment 4 of the present invention, FIG. 13 is a structural view showing an assembled state of FIG. 12, and FIG. 14 is a plan view of the plate-like substrates 2e and 2f of FIG. FIG. 4 is a diagram showing a state where the substrate is closed on the substrate 2d side.
In FIG. 12, the same or corresponding parts as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In FIGS. 12, 13, and 14 of the present embodiment, the same or corresponding portions are denoted by the same reference characters. Further, the circuit configuration of the LED element 4 and the circuit component 3 for lighting the LED element 4 according to the present embodiment is the same as the circuit configuration of FIG. Description is omitted.
[0029]
In FIG. 12, reference numeral 2d denotes a plate-like substrate to which the circuit component 3 for lighting the LED element 4 is attached, and reference numerals 2e and 2f denote plate-like substrates to which the LED element 4 is attached. The circuit shown in FIG. 3 is constituted by the circuit components 3 of the plate-like substrate 2d and the LED elements 4 of the plate-like substrates 2e and 2f. The insertion width (D7) (width in the direction perpendicular to the insertion direction) of the board 2d, 2e, 2f is narrower than the inner diameter (D1) of the opening of the spherical cover 6 so that the spherical cover 6 It can be inserted through the opening. 5 'is a lead wire for electrically connecting the plate-like substrate 2d to which the circuit component 3 is attached and the plate-like substrates 2e and 2f to which the LED elements 4 are attached, and 9 is a lead wire of the plate-like substrate 2d. The hinges provided on the distal end side, the plate-like substrates 2e and 2f on which the LED elements 4 are mounted are respectively pivoted on the hinges 9, and the plate-like substrates 2e and 2f are closed or opened around the hinge 9 as a fulcrum. Or have been able to. Reference numeral 10 denotes a spring for connecting the plate-shaped substrate 2d and the plate-shaped substrates 2e and 2f, respectively. The plate-shaped substrates 2e and 2f are each, for example, at about 90 degrees with respect to the plate-shaped substrate 2d by the force of the spring 10. It is designed to open up. The degree of opening of the plate-shaped substrates 2e and 2f to which the LED elements 4 are attached is designed or selected such that the spring is designed to have a desired degree of opening.
[0030]
In the above-described configuration, as shown in FIG. 13, for example, an adhesive is filled up to the hatched portion of the base 1, and the base end side of the plate-shaped substrate 2 d to which the circuit component 3 is attached is the base. 1 is fixed with an adhesive in a state of standing on the inner bottom surface. Since the plate-like substrates 2e and 2f to which the LED elements 4 mounted on the tip of the one plate-like substrate 2d are mounted are opened by the spring 10, the LED elements of the plate-like substrates 2e and 2f are opened. A force is applied with a finger or the like from the side of the mounting surface 4 to close the plate-like substrates 2e and 2f on which the LED elements 4 are mounted to the plate-like substrate 2d on which the circuit components 3 are mounted as shown in FIG. State. In this state, the spherical cover 6 is put over the opening, and when the finger is released, the plate-like substrates 2e and 2f are placed inside the spherical cover 6 by the force of the spring 10 as shown in FIG. Open to the desired degree. Then, the opening of the spherical cover 6 is fitted to the base 1 to form a lighting device.
[0031]
As described above, the plate-like substrate 2d, which is constituted by the three plate-like substrates having a width smaller than the inner diameter of the opening of the spherical cover 6, and to which the circuit component 3 for lighting the LED element 4 is attached. A hinge is provided on the tip side, and the plate-like substrates 2e and 2f on which the LED elements 4 attached to the hinge are attached are connected by springs 10, respectively. The plate-like substrates 2e and 2f are configured to open with a desired degree of opening. Then, the plate-like substrates 2e and 2f are inserted from the opening of the spherical cover 6 in a state of being closed to the plate-like substrate 2d side, and are opened in the cover 6 after the insertion. The lighting device which can incorporate the circuit of the LED device 4 and the LED device 4 can be obtained. In addition, when the lamp 1 is mounted on a socket or the like serving as a current supply unit with the base 1 facing upward, a lighting device that can emit more light downward can be obtained.
[0032]
In the above embodiment, the light emitting element as the light source is described as an example of the LED element, but the present invention is not limited to this.
[0033]
【The invention's effect】
As described above, the present invention has a cylindrical base, a spherical cover having an opening at one end, and the base being fitted to the opening, and a base end fixed to the base and a distal end side. A lighting device comprising a light source unit inserted into the spherical cover, wherein the light source unit is a plate-shaped substrate provided with a plurality of light emitting elements on a distal end side, and is disposed on a base end side of the substrate. Since the light emitting device is provided with a circuit component for lighting the light emitting device, a circuit of the light emitting device and a circuit component for lighting the light emitting device can be easily incorporated in the spherical cover. In addition, circuit components for lighting the light emitting element are intensively arranged in a portion hidden by the base on the base end side of one plate-shaped substrate, and a portion not hidden by the base, that is, the spherical cover side on the base facing the base. Since the light emitting elements are concentratedly arranged on both the front end surfaces of the plate-like substrate, a lighting device which is easy to assemble with a simple configuration by effective arrangement can be obtained.
[Brief description of the drawings]
FIG. 1 is an exploded view of a configuration of a lighting device according to a first embodiment of the present invention.
FIG. 2 is a configuration diagram showing FIG. 1 according to Embodiment 1 in an assembled state.
FIG. 3 is a circuit configuration diagram according to the first embodiment;
FIG. 4 is an exploded configuration diagram of a lighting device according to Embodiment 2 of the present invention.
FIG. 5 is a diagram illustrating a cylindrical substrate 7 according to a second embodiment.
FIG. 6 is a configuration diagram showing a partially cut-out state of an assembled state of FIG. 4 according to the second embodiment.
FIG. 7 is an exploded view of a configuration of a lighting device according to Embodiment 3 of the present invention.
FIG. 8 is a side view of the rectangular substrates 2a to 2c according to the third embodiment.
FIG. 9 is a perspective view of a substrate in which the rectangular substrates 2a to 2c according to the third embodiment are formed in a regular triangular cylindrical shape.
FIG. 10 is a diagram illustrating a relationship between a circle and an equilateral triangle inscribed in the third embodiment.
FIG. 11 is a configuration diagram showing an assembled state of FIG. 7 according to the third embodiment.
FIG. 12 is a configuration exploded view of a lighting device according to Embodiment 4 of the present invention.
FIG. 13 is a configuration diagram showing the assembled state of FIG. 12 according to the fourth embodiment.
FIG. 14 is a view showing a state in which plate-like substrates 2e and 2f according to Embodiment 4 are closed on the plate-like substrate 2d side.
[Explanation of symbols]
1 cap, 2, 2 ', 2a-2f plate-shaped board, 3 circuit parts, 4 LED element, 5, 5' lead wire, 6 spherical cover, 7 cylindrical board, 8 circuit pattern, 9 hinge, 10 spring.

Claims (2)

  1. A cylindrical base, a spherical cover having an opening at one end and the base fitted to the opening, and a light source unit having a base fixed to the base and a distal end inserted into the spherical cover. A lighting device comprising:
    The lighting device, wherein the light source unit includes: a plate-shaped substrate on which a plurality of light emitting elements are provided on a distal end side; and a circuit component disposed on a base end side of the substrate to turn on the light emitting elements. .
  2. A cylindrical base, a spherical cover having an opening at one end and the base fitted to the opening, and a light source unit having a base fixed to the base and a distal end inserted into the spherical cover. A lighting device comprising:
    The light source unit is arranged on a back surface of at least one of the rectangular substrate pieces and a tubular substrate obtained by combining a plurality of rectangular substrate pieces provided with a plurality of light emitting elements on the front side, and illuminates the light emitting elements. A lighting device, comprising: a circuit component for causing the lighting device to emit light.
JP2002297765A 2002-10-10 2002-10-10 Lighting device Pending JP2004134249A (en)

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JP2008264051A (en) * 2007-04-17 2008-11-06 Fujishoji Co Ltd Game machine
JP2010015982A (en) * 2008-06-04 2010-01-21 Teikin Kk Illumination device
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JP2011243512A (en) * 2010-05-20 2011-12-01 Birumen Kagoshima:Kk Led lighting tool
WO2011159002A1 (en) * 2010-06-15 2011-12-22 한국전기연구원 Sine wave constant current led driving circuit and a method thereof
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