JP2014175099A - Light source for lighting and lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light source for lighting which achieves waterproofness by a simple structure.SOLUTION: An LED bulb (a light source for lighting) 1 is attached to a socket 110 of a lighting fitting 100 and includes: a housing 20 having a first opening 20a and a second opening 20b; a globe 10 which is attached to the housing 20 so as to close the first opening 20a; a mouth piece 30 which is attached to the housing 20 so as to close the second opening 20b and is attached to the socket 110; and an LED light source (a light source part) 40 having an LED (a light emitting element) 41 and covered by the globe 10. At least a part of an outer surface of the housing 20 is a flat surface, and the flat surface contacts with an annular end part of an opening 111a of the socket 110 when the mouth piece 30 is attached to the socket 110.

Description

  The present invention relates to an illumination light source such as an LED bulb using a light emitting diode (LED) and an illumination device including the same.

  Semiconductor light emitting devices such as LEDs are expected to be light sources for various products because of their small size, high efficiency, and long life. Among these, LED bulbs (bulb-shaped LED lamps) are being actively developed as illumination light sources that replace the conventionally known bulb-type fluorescent lamps and incandescent bulbs (Patent Document 1).

  The LED bulb includes, for example, an LED light source having an LED, a globe that covers the LED light source, a drive circuit for driving the LED, an outer casing configured to surround the drive circuit, and an LED for emitting light. And a base for receiving electric power. The LED bulb configured as described above is used by mounting the base on the socket of the lighting fixture.

JP 2006-313717 A

  The above-mentioned LED bulb is usually fixed to the outer casing or the like mechanically, for example, by caulking or the like, and there may be a slight gap at the connection portion of the base. That is, when the base is screwed and connected to a part of the outer casing, there is a gap in the connection portion between the base and the outer casing, and the base is not completely sealed.

  Since there are electronic parts such as LED light source and drive circuit inside the LED bulb, if there is a gap in the connection part of the base, moisture (humidity) enters the inside of the LED bulb, and the LED light source and drive circuit And the like deteriorate.

  In addition, LED bulbs are not only used indoors in homes and various facilities, but may also be used in highly humid environments such as outdoors exposed to rain, around water, and refrigerators. In this case, the amount of moisture entering the inside of the LED bulb also increases, and the deterioration of the LED light source, the drive circuit, etc. becomes significant.

  Thus, in LED bulbs, the problem is how to prevent moisture from entering from the base.

  The present invention has been made to solve such problems, and an object of the present invention is to provide an illumination light source and an illumination device having a simple structure and excellent waterproofness.

  In order to achieve the above object, one aspect of an illumination light source according to the present invention is an illumination light source mounted on a socket of a lighting fixture, and a housing having a first opening and a second opening; A globe attached to the housing to close the first opening, a base attached to the housing to close the second opening, and attached to the socket; and a light emitting element, A light source section covered with the globe, wherein at least a part of the outer surface of the housing is a flat surface, and the flat surface is an opening of the socket when the base is attached to the socket. It contacts with the annular end part of this.

  In one aspect of the illumination light source according to the present invention, the illumination light source is attached to the socket by being rotated, and a normal line of the flat surface substantially coincides with a rotation axis of the illumination light source. May be.

  Further, in one aspect of the illumination light source according to the present invention, the housing includes a first housing portion having the first opening, a second housing portion having the second opening, and the first. A third housing portion connecting the housing portion and the second housing portion, wherein the first housing portion and the third housing portion have a cylindrical side wall, and the first housing The outer diameter of the part is larger than the outer diameter of the third casing part, and the first casing part includes the cylindrical side wall of the first casing part and the cylindrical side wall of the third casing part. An annular plate to be connected may be provided, and an outer surface of the annular plate may be the flat surface.

  Moreover, the aspect of the light source for illumination according to the present invention may further include a drive circuit disposed inside the housing.

  Moreover, one aspect of the lighting device according to the present invention is a lighting device including a lighting light source and a lighting fixture having a socket to which the lighting light source is mounted, wherein the lighting light source includes a first opening. And a housing having a second opening, a glove attached to the housing so as to close the first opening, and being attached to the socket so as to close the second opening A base having a light emitting element and covered with the globe, wherein the socket is disposed inside the socket casing and is electrically connected to the base. And at least a part of the outer surface of the housing is a flat surface, the socket housing has the opening, and the flat surface is an annular end of the opening. It is in contact with the part.

  Further, in one aspect of the illumination device according to the present invention, the illumination light source is attached to the socket by being rotated, and a normal line of the flat surface substantially coincides with a rotation axis of the illumination light source. Also good.

  In the lighting device according to the aspect of the present invention, the housing may include a first housing portion having the first opening, a second housing portion having the second opening, and the first housing. A third housing portion that connects the body portion and the second housing portion, and the first housing portion and the third housing portion have a cylindrical side wall, and the first housing portion The outer diameter of the first casing portion is larger than the outer diameter of the third casing portion, and the first casing portion connects the cylindrical sidewall of the first casing portion and the cylindrical sidewall of the third casing portion. The outer surface of the annular plate may be the flat surface.

  Moreover, the one aspect | mode of the illuminating device which concerns on this invention WHEREIN: The annular edge part of the said opening part of the said socket housing | casing is good also as a flat surface.

  Moreover, the one aspect | mode of the illuminating device which concerns on this invention WHEREIN: Furthermore, you may provide the drive circuit arrange | positioned inside the said housing | casing.

  According to the present invention, waterproofness can be secured with a simple configuration. Furthermore, according to the present invention, it is possible to ensure dust resistance.

It is a side view of the LED bulb which concerns on embodiment of this invention. It is sectional drawing of the LED bulb which concerns on embodiment of this invention. It is an external appearance perspective view of the illuminating device which concerns on embodiment of this invention. It is principal part sectional drawing of the illuminating device which concerns on embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an illumination light source and an illumination device according to embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangement positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements. Each figure is a schematic diagram and is not necessarily illustrated strictly.

  In the following embodiments, an LED bulb will be described as an example of an illumination light source.

(LED bulb)
First, the overall configuration of the LED bulb 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a side view of an LED bulb according to an embodiment of the present invention.

  As shown in FIG. 1, the LED bulb 1 according to the present embodiment includes a globe 10, a housing 20, a base 30, an LED light source 40, and a drive circuit 50. The LED bulb 1 includes an envelope formed by the globe 10, the housing 20, and the base 30.

  The LED bulb 1 in the present embodiment is a relatively small LED bulb that is used in a refrigerator or the like. For example, in the case of the E14 base, the total length of the lamp of the LED bulb 1 (the length from the top of the globe 10 to the bottom of the base 30) is about 63 mm, and the outermost diameter of the lamp (in this embodiment, the outermost of the globe 10). (Diameter) is about φ27 mm. In the case of the E12 base, the total length of the lamp of the LED bulb 1 is about 47 mm, and the outermost diameter of the lamp is about φ27 mm.

  Next, each component of the LED bulb 1 will be described in detail with reference to FIG. FIG. 2 is a cross-sectional view of the LED bulb according to the embodiment of the present invention.

  In FIG. 2, the alternate long and short dash line drawn in the vertical direction on the paper indicates the lamp axis J (center axis) of the LED bulb 1. In this embodiment, the lamp axis J coincides with the globe axis. ing. The lamp axis J is a rotation axis that is a rotation center when the LED bulb 1 is attached to the socket of the lighting device, and coincides with the rotation axis of the base 30.

[Glove]
As shown in FIG. 2, the globe 10 is a translucent cover that covers the LED light source 40, and is configured to extract light emitted from the LED light source 40 to the outside of the lamp. Therefore, the light from the LED light source 40 that has entered the inner surface of the globe 10 passes through the globe 10 and is extracted to the outside of the globe 10.

  The globe 10 is a hollow rotating body having an opening 11, and in the present embodiment, the globe 10 is configured in a substantially spherical shape in which the opening 11 is narrowed. The globe 10 is attached to the housing 20 so as to close the first opening 20a of the outer housing 20.

  The globe 10 may be transparent so that the internal LED light source 40 can be visually recognized, or the globe 10 may not be transparent by providing the globe 10 with a light diffusion function. When the globe 10 has a light diffusing function, for example, a milky white light diffusing film is formed by applying a resin or a white pigment containing a light diffusing material such as silica or calcium carbonate to the entire inner surface or outer surface of the globe 10. What is necessary is just to form.

  As a material of the globe 10, a glass material such as silica glass, or a resin material such as acrylic (PMMA) or polycarbonate (PC) can be used. In addition, as a shape of the globe 10, a glass bulb having a shape similar to that of a general light bulb type fluorescent lamp or incandescent lamp can be used. For example, the globe 10 may be an A shape, a G shape, an E shape, or the like as defined in JIS C7710.

[Case]
As shown in FIG. 2, the housing 20 is configured to surround a drive circuit 50 for driving the LED light source. The housing | casing 20 is an outer housing | casing which comprises the outermost shell of the LED light bulb 1, and the outer surface is exposed outside the lamp | ramp.

  The casing 20 is configured in a substantially cylindrical shape, and includes a first opening 20a that is an opening on the globe side and a second opening 20b that is an opening on the base side.

  The housing 20 in the present embodiment includes a first housing portion 21 having a first opening 20a, a second housing portion 22 having a second opening 20b, the first housing portion 21 and the second housing. It is comprised by the 3rd housing | casing part 23 which connects the body part 22. FIG.

  The first housing 21 includes a cylindrical side wall (first cylindrical side wall) 21a having the first opening 20a as one opening, and an annular plate (first circle) connected to the other opening of the cylindrical side wall 21a. Ring plate) 21b. The outer surfaces of the cylindrical side wall 21a and the annular plate 21b are exposed surfaces exposed to the outside of the lamp. The cylindrical side wall 21a and the annular plate 21b constitute a bent portion of the first housing portion 21.

  The cylindrical side wall 21a is formed in a cylindrical shape having the same cylinder axis as the lamp axis J and a constant thickness. The outer diameter and inner diameter of the cylindrical side wall 21a are constant along the direction of the lamp axis J. The cylindrical side wall 21a may not have a constant outer diameter and inner diameter, and may be tapered so that the inner diameter and the outer diameter gradually decrease toward the base 30 side.

  The annular plate 21b is formed in an annular (doughnut-like) plate shape. The outer surface of the annular plate 21b is a flat surface (a plane), and the normal line thereof substantially coincides with the lamp axis J. The outer peripheral edge of the annular plate 21 b is connected to the cylindrical side wall 21 a, and the inner peripheral edge of the annular plate 21 b is connected to the cylindrical side wall 23 a of the third housing part 23.

  As will be described later, the flat surface of the annular plate 21b is a surface that comes into contact with the annular end of the opening of the socket when the LED bulb 1 is attached to the socket of the lighting fixture.

  The globe 10 is attached to the first opening 20 a of the first housing portion 21, and the first opening 20 a is closed by the globe 10. The 1st housing | casing part 21 and the globe 10 can be fixed with adhesives, such as a silicone resin, for example.

  The 2nd housing | casing part 22 is comprised by the substantially cylindrical shape which makes the 2nd opening part 20b one opening. A base 30 is attached to the second opening 20 b of the second housing portion 22. In the present embodiment, since the entire second housing part 22 is covered by the base 30, the outer surface of the second housing part 22 is not exposed to the outside of the lamp.

  The second housing portion 22 is formed with a screwing portion for screwing with the base 30, and the base 30 is fixed to the second housing portion 22 by being screwed into the second housing portion 22. By fixing the base 30 to the second housing part 22, the second opening 20 b is closed by the base 30.

  The third housing part 23 is disposed between the first housing part 21 and the second housing part 22. One end of the third housing part 23 is connected to the first housing part 21, and the other end of the third housing part 23 is connected to the second housing part 22.

  The third housing portion 23 includes a cylindrical cylindrical side wall (second cylindrical side wall) 23a having a constant thickness and an annular plate-shaped annular plate (second annular plate) 23b. . The outer surfaces of the cylindrical side wall 23a and the annular plate 23b are exposed surfaces exposed to the outside of the lamp. The cylindrical side wall 23a and the annular plate 23b constitute a bent part of the third housing part 23.

  The cylindrical side wall 23 a has the same cylinder axis as the lamp axis J, and the outer diameter and inner diameter are constant along the direction of the lamp axis J. The cylindrical side wall 23a may not have a constant outer diameter and inner diameter, and may be tapered so that the inner diameter and the outer diameter gradually decrease toward the base 30 side.

  The outer surface of the annular plate 23b is a flat surface (plane), and the normal line thereof substantially coincides with the lamp axis J. The outer peripheral edge of the annular plate 23 b is connected to the cylindrical side wall 23 a, and the inner peripheral edge of the annular plate 23 b is connected to the second housing part 22.

  The casing 20 configured in this way is configured such that the maximum outer diameter of the cylindrical side wall 21a of the first casing portion 21 is larger than the maximum outer diameter of the cylindrical side wall 23a of the third casing portion 23. An annular plate 21b is provided between the large-diameter opening of the cylindrical side wall 21a and the small-diameter opening of the cylindrical side wall 23a. As described above, a jaw-shaped stepped portion is formed between the first housing portion 21 and the third housing portion 23 due to the difference in outer diameter between the first housing portion 21 and the third housing portion 23. The Further, the surface of the stepped portion becomes a flat surface of the annular plate 21 b in the first housing portion 21.

  In the present embodiment, since the outer diameters of the cylindrical side wall 21a and the cylindrical side wall 23a are constant, the outer diameter difference between the first housing part 21 and the third housing part 23 is also constant.

  The casing 20 configured as described above can be manufactured using an insulating resin material such as polybutylene terephthalate (PBT). That is, the 1st housing | casing part 21, the 2nd housing | casing part 22, and the 3rd housing | casing part 23 are integrally molded by resin molding.

[Base]
The base 30 is a power receiving unit that receives power for causing the LEDs of the LED light source 40 to emit light from outside the lamp. The LED bulb 1 can be attached to the lighting fixture by screwing the base 30 into the socket.

  The base 30 is supplied with, for example, commercial AC power. The base 30 in the present embodiment receives AC power through two contact points, and the power received by the base 30 is input to the drive circuit 50 via a lead wire.

  As shown in FIG. 2, the base 30 is attached to the housing 20 so as to close the second opening 20b. The base 30 in the present embodiment has a bottomed cylindrical shape made of metal, and includes, for example, a shell part (first conductive part) 31, an eyelet part (second conductive part) 32, a shell part 31, and an eyelet. It is comprised by the insulation part 33 which insulates from the part 32.

  On the outer peripheral surface of the shell portion 31, a screwing portion for screwing a socket of a lighting fixture to which the LED bulb 1 is mounted is formed. Further, on the inner peripheral surface of the shell portion 31, a screwing portion for screwing with the screwing portion of the second housing portion 22 of the housing 20 is formed.

  The insulating part 33 is made of, for example, black glass, and the eyelet part 32 is attached to the shell part 31 by the insulating part 33.

  The type of the base 30 is not particularly limited, but in the present embodiment, a screwed type Edison type (E type) base is used. Moreover, although it does not specifically limit about the size of the nozzle | cap | die 30, For example, E14 type or E12 type etc. are mentioned.

[LED light source]
The LED light source 40 is a light emitting module having a light emitting element such as an LED, and is a light source unit of the LED bulb 1. The LED light source 40 emits light of a predetermined color (wavelength) such as white by direct current power from the drive circuit 50. The LED light source 40 is covered with the globe 10 and is housed in the globe 10 in the present embodiment.

  As shown in FIG. 2, the LED light source 40 includes, for example, an LED 41 and a substrate 42 for mounting the LED 41. The number of LEDs 41 may be one or plural.

  The LED 41 is, for example, an SMD type LED element, and includes a resin container having a recess, an LED chip (bare chip) mounted in the recess, and a sealing member sealed in the recess.

  For example, a blue LED chip that emits blue light when energized can be used as the LED chip. As the sealing member, a transparent resin or a phosphor-containing resin can be used. In the case of a phosphor-containing resin, when obtaining white light from a blue LED chip, a translucent silicone resin containing YAG-based yellow phosphor particles can be used as the sealing member. As a result, part of the blue light emitted from the blue LED chip is converted into yellow light by the yellow phosphor particles contained in the sealing member, and the blue light and the yellow phosphor particles that are not absorbed by the yellow phosphor particles. The wavelength-converted yellow light is mixed into white light and emitted from the sealing member.

  The LED 41 may be an LED chip (bare chip). In this case, the sealing member (transparent resin or phosphor-containing resin) is formed so as to cover the LED 41.

  The substrate 42 is an LED mounting substrate in which metal wiring is patterned, and for example, a ceramic substrate, a resin substrate, or a metal base substrate can be used. The substrate 42 may be a circuit substrate for the drive circuit 50. In this case, the LED 41 is directly mounted on a circuit board on which circuit elements are mounted.

  The LED light source 40 configured in this way can be fixed to the housing 20, for example. Or you may arrange | position the LED light source 40 on the support stand (heat sink) etc. which are arrange | positioned in the housing | casing 20. FIG. In this case, the support base is preferably made of a metal such as aluminum in order to efficiently dissipate heat generated from the LED light source 40.

[Drive circuit]
A drive circuit 50 for driving the LED light source 40 is disposed inside the housing 20. The drive circuit 50 is a lighting circuit (power supply circuit) for lighting the LED light source 40, and supplies predetermined power to the LED light source 40 via a lead wire or the like. For example, the drive circuit 50 converts AC power supplied from the base 30 into DC power, and supplies the DC power to the LED light source 40.

  The drive circuit 50 includes a circuit board and a plurality of circuit elements mounted on the circuit board. The circuit board is, for example, a printed wiring board (PWB) in which a metal wiring such as a copper foil is patterned on one surface (solder surface). Circuit elements (circuit components) include, for example, capacitive elements such as electrolytic capacitors and ceramic capacitors, resistive elements such as resistors, rectifier circuit elements, coil elements, choke coils (choke transformers), noise filters, diodes, integrated circuit elements, etc. The semiconductor element or the like.

  The drive circuit 50 may be fixed to the housing 20, but may be fixed to a resin circuit holder (circuit case) separately disposed in the housing 20.

(Lighting device)
Next, the illuminating device 2 which concerns on embodiment of this invention is demonstrated using FIG.3 and FIG.4. FIG. 3 is an external perspective view of the illumination device according to the embodiment of the present invention. FIG. 4 is a cross-sectional view of a main part of the illumination device according to the embodiment of the present invention.

  The lighting device 2 according to the present embodiment is used, for example, by being mounted in a refrigerator. As shown in FIGS. 3 and 4, the LED bulb 1 and the lighting fixture (lighting fixture) are used. ) 100.

  The lighting fixture 100 has a socket 110 to which the LED bulb 1 is attached. As illustrated in FIG. 4, the socket 110 includes a socket housing 111 that forms an outer shell of the socket 110, and a connection portion 112 that is disposed inside the socket housing 111.

  The socket housing 111 is an outer housing of the socket 110, and can be made of, for example, an insulating resin material. The socket housing 111 is a rotating body having the lamp axis J as an axis, and is, for example, a bottomed cylindrical member whose side peripheral wall is configured in two steps.

  The socket housing 111 is configured to surround a part of the housing 20 of the LED bulb 1 and the base 30. Specifically, the socket housing 111 is configured to cover the third housing portion 23 and the base 30 in the exposed portion of the housing 20.

  The socket housing 111 has an opening 111a that constitutes an opening into which the LED bulb 1 is inserted. The end portion of the opening 111a is an annular end portion configured in an annular shape, and in the present embodiment, the annular end portion is an annular flat surface. The normal line of the flat surface of the annular end portion of the opening 111a substantially coincides with the lamp axis J.

  The connection portion 112 is made of a conductive member such as metal and is provided at the bottom of the socket housing 111. When the base 30 of the LED bulb 1 is inserted into the socket 110, the connection portion 112 contacts the base 30 at two contacts. Thereby, the connection part 112 and the nozzle | cap | die 30 are electrically connected.

  The connection portion 112 is in contact with the shell portion 31 of the base 30 and electrically connected thereto, and the second connection portion 112b is in contact with and electrically connected to the eyelet portion 32 of the base 30. It is constituted by.

  The first connection portion 112 a is formed so as to be screwed with the screw portion of the shell portion 31. That is, the LED bulb 1 is attached to the socket 110 by screwing the base 30 into the connection portion 112, and the first connection portion 112a and the shell portion 31 are brought into contact with each other to be conducted.

  Moreover, the 2nd connection part 112b is formed in the shape of a leaf | plate spring, for example, and the 2nd connection part 112b and the eyelet part 32 contact when the nozzle | cap | die 30 is screwed in the back | inner part of the 1st connection part 112a. Conduct.

  For example, AC power is supplied to the connection unit 112 from an external power supply outside the socket. Thereby, the AC power from the external power source is supplied to the base 30 of the LED bulb 1 through the connection portion 112.

  The LED bulb 1 can be mounted on the lighting fixture 100 by screwing the base 30 into the socket 110 along the lamp axis J with respect to the lighting fixture 100 configured as described above.

  In this case, when the annular end of the opening 111a of the socket housing 111 abuts on the surface of the stepped portion of the housing 20 of the LED bulb 1, the screwing of the LED bulb 1 into the lighting fixture 100 is completed.

  At this time, the annular end portion of the opening 111a of the socket housing 111 abuts on the outer surface (flat surface) of the annular plate 21b of the first housing portion 21 in the housing 20 of the LED bulb 1 in the circumferential direction. . That is, the annular end portion of the opening 111 a of the socket housing 111 is in contact with the surface of the jaw-shaped stepped portion of the housing 20.

  As described above, in the present embodiment, by screwing the cap 30 into the socket 110, the annular end portion of the opening 111 a of the socket housing 111 becomes the outer surface (flat surface) of the annular plate 21 b of the first housing portion 21. It is made to contact. That is, the annular end portion of the opening 111a of the socket housing 111 is pressed against the outer surface (flat surface) of the annular plate 21b of the first housing portion 21 by a tightening force when the base 30 is screwed into the socket 110. ing.

  As a result, a pressing force can be applied to the outer surface (flat surface) of the annular plate 21b by the annular end portion of the opening 111a, and therefore, between the opening 111a and the outer surface (flat surface) of the annular plate 21b. The opening 111a of the socket housing 111 and the housing 20 (first housing portion 21) of the LED bulb 1 can be brought into close contact with each other so that there is substantially no gap.

  As described above, moisture can be prevented from entering the socket 110 to which the base 30 is attached, so that moisture can be prevented from entering the housing 20 through the gap between the screwed portion of the base 30 and the housing 20. it can. Thereby, it can suppress that electronic components, such as the LED light source 40 and the drive circuit 50, deteriorate with moisture. Therefore, an LED bulb excellent in waterproofness can be realized.

  Furthermore, in this embodiment, since there is no gap between the opening 111a of the socket housing 111 and the outer surface (flat surface) of the annular plate 21b of the first housing portion 21, dust or minute particles are present in the socket 110. It is possible to suppress the entry of foreign matter. Thereby, it can suppress that an electrical malfunction generate | occur | produces between the connection part 112 of the socket 110, and the nozzle | cap | die 30. FIG. In addition, since dust and minute foreign matter can be prevented from entering the LED bulb 1, it is possible to suppress the occurrence of electrical problems in the LED light source 40, the drive circuit 50, and the like. Therefore, it is possible to realize an LED bulb that is excellent in dust resistance.

  As mentioned above, according to this Embodiment, it can be set as the LED bulb 1 and the illuminating device 2 which were excellent in waterproofness and dustproof property, and is reliable LED even when used in humid environments, such as a refrigerator. A light bulb and a lighting device can be realized.

  In the present embodiment, the normal line of the outer surface (flat surface) of the annular plate 21b of the first housing portion 21 is substantially coincident with the lamp axis J, that is, the LED bulb when the base 30 is screwed into the socket 110. 1 substantially coincides with the rotation axis.

  As a result, when the base 30 is screwed into the socket 110, the annular end of the opening 111 a of the socket casing 111 is brought into contact with the outer surface (flat surface) of the annular plate 21 b of the first casing 21. Can be made. Therefore, it is possible to eliminate a gap between the opening 111a and the outer surface (flat surface) of the annular plate 21b with a simple configuration.

  Moreover, in this Embodiment, not only the outer surface of the annular plate 21b of the 1st housing | casing part 21, but the cyclic | annular edge part of the opening part 111a is also a flat surface.

  Accordingly, the outer surface of the annular plate 21b and the annular end portion of the opening 111a can be brought into surface contact, so that moisture, dust, or the like is generated between the outer surface of the annular plate 21b and the annular end portion of the opening 111a. Intrusion can be further suppressed. Therefore, it can be set as the LED bulb 1 and the illuminating device 2 which were further excellent in waterproofness and dustproofness.

(Modification)
As mentioned above, although the LED electricity and the illuminating device which concern on this invention were demonstrated based on embodiment, this invention is not limited to these embodiment.

  For example, in the above embodiment, the LED light source 40 is configured to emit white light by the blue LED chip and the yellow phosphor, but is not limited thereto. For example, in order to improve color rendering properties, a red phosphor or a green phosphor may be further mixed in addition to the yellow phosphor. Moreover, it is also possible to use a phosphor-containing resin containing a red phosphor and a green phosphor without using a yellow phosphor, and to emit white light by combining this with a blue LED chip. it can. Note that the LED light source 40 may be configured to emit light other than white light.

  Moreover, in said embodiment, you may use the LED chip which light-emits colors other than blue as an LED chip. For example, when an ultraviolet light emitting LED chip is used, a combination of phosphor particles that emit light in three primary colors (red, green, and blue) can be used as the phosphor particles. Furthermore, a wavelength conversion material other than the phosphor particles may be used. For example, the wavelength conversion material absorbs light of a certain wavelength such as a semiconductor, a metal complex, an organic dye, or a pigment, and has a wavelength different from the absorbed light. A material containing a substance that emits light may be used.

  In the above embodiment, the LED is exemplified as the light emitting element. However, the semiconductor light emitting element such as a semiconductor laser or the other solid light emitting element such as an EL element such as an organic EL (Electro Luminescence) or an inorganic EL is used. Also good.

  In addition, the present invention can be realized by various combinations conceived by those skilled in the art for each embodiment, or by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention. This form is also included in the present invention.

1 LED bulb (light source for lighting)
2 lighting device 10 globe 11 opening 20 housing 20a first opening 20b second opening 21 first housing 21a, 23a cylindrical side wall 21b, 23b annular plate 22 second housing 23 third housing 30 base 31 shell part 32 eyelet part 33 insulating part 40 LED light source (light source part)
41 LED (light emitting element)
42 Substrate 50 Drive circuit 100 Lighting fixture 110 Socket 111 Socket housing 111a Opening portion 112 Connection portion 112a First connection portion 112b Second connection portion

Claims (9)

A light source for lighting to be mounted in a socket of a lighting fixture,
A housing having a first opening and a second opening;
A glove attached to the housing so as to close the first opening;
A base attached to the housing so as to close the second opening and attached to the socket;
Having a light emitting element, and comprising a light source section covered with the globe,
At least a part of the outer surface of the housing is a flat surface,
The flat surface is an illumination light source that abuts against an annular end of the opening of the socket when the base is mounted on the socket. The illumination light source is attached to the socket by rotating,
The illumination light source according to claim 1, wherein a normal line of the flat surface substantially coincides with a rotation axis of the illumination light source. The housing connects the first housing portion having the first opening, the second housing portion having the second opening, and the first housing portion and the second housing portion. A third housing part,
The first housing part and the third housing part have cylindrical side walls,
The outer diameter of the first housing part is larger than the outer diameter of the third housing part,
The first housing part has an annular plate that connects the cylindrical side wall of the first housing part and the cylindrical side wall of the third housing part,
The light source for illumination according to claim 1, wherein an outer surface of the annular plate is the flat surface. The illumination light source according to claim 1, further comprising a drive circuit disposed inside the housing. An illumination device comprising: an illumination light source; and a luminaire having a socket to which the illumination light source is attached,
The illumination light source is
A housing having a first opening and a second opening;
A glove attached to the housing so as to close the first opening;
A base attached to the housing so as to close the second opening and attached to the socket;
Having a light emitting element, and comprising a light source section covered with the globe,
The socket is
An outer socket housing,
A connection portion disposed inside the socket housing and electrically connected to the base;
At least a part of the outer surface of the housing is a flat surface,
The socket housing has the opening,
The flat surface is in contact with an annular end of the opening. The illumination light source is attached to the socket by rotating;
The illumination device according to claim 5, wherein a normal line of the flat surface substantially coincides with a rotation axis of the illumination light source. The housing connects the first housing portion having the first opening, the second housing portion having the second opening, and the first housing portion and the second housing portion. A third housing part,
The first housing part and the third housing part have cylindrical side walls,
The outer diameter of the first housing part is larger than the outer diameter of the third housing part,
The first housing part has an annular plate that connects the cylindrical side wall of the first housing part and the cylindrical side wall of the third housing part,
The lighting device according to claim 5, wherein an outer surface of the annular plate is the flat surface. The lighting device according to claim 5, wherein an annular end portion of the opening of the socket housing is a flat surface. Furthermore, the illuminating device of any one of Claims 5-8 provided with the drive circuit arrange | positioned inside the said housing | casing.

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