JP2015090784A - Illumination light source - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination light source having a simple structure in which components are firmly fixed.SOLUTION: An LED lamp 100 comprises: an LED module 110; a light guide member 120 comprising light guide parts 121 that are arranged on the light emission side of the LED module 110 and control the light distribution of emitted light; a front cover 130 including a first opening part 131b through which light emitted from the LED module 110 and passed through the light guide parts 121 is passed; and a case 150 that is fixed to the front cover 130 and covers the LED module 110 together with the front cover 130. The front cover 130 surrounds the light guide member 120 and holds the light guide member 120 so that the light guide parts 121 do not make contact with the LED module 110.

Description

  The present invention relates to an illumination light source.

  2. Description of the Related Art Conventional illumination light sources using LEDs (Light Emitting Diodes) are known in which a lens portion is provided on the light emission side from an LED in order to perform light distribution control of the light emitted from the LED (patent) Reference 1). Light emitted from the LED is radiated to the outside through the lens unit.

  This type of illumination light source is provided with a housing, an LED module attached to the housing, and a drive for driving the LED, in addition to a lens unit that controls light distribution of emitted light from the LED. Circuit.

  In the illumination light source shown in Patent Document 1, the lens and the LED module are positioned and held by the bottom surface of the lens (light guide unit) of the lens unit contacting the LED module. However, there is a possibility that the lens or the LED module may be damaged when the bottom surface of the lens comes into contact with the LED module.

  On the other hand, it is conceivable that a hole is provided in the LED module, and a leg portion inserted into a hole provided in the LED module is provided in the lens portion. By inserting the leg portion into the hole, the lens portion can be positioned and held with respect to the LED.

International Publication No. 2011-152038

  However, in the conventional illumination light source, it is necessary to provide a leg portion in the lens portion, and a hole into which the leg portion is inserted must be provided in the LED module. For this reason, the shape of the lens portion and the configuration of the LED module become complicated, and the cost increases.

  Therefore, the present invention provides an illumination light source in which components are firmly fixed with a simple configuration.

  In order to solve the above-described problems, a light source for illumination according to an aspect of the present invention includes a light emitting module and a light guide member that is disposed on a light emitting side of the light emitting module and controls light distribution of the emitted light. A cover member having an opening that allows light emitted from the light emitting module to pass through the light guide, and a housing that is fixed to the cover member and covers the light emitting module together with the cover member. The cover member is configured to surround the light guide member, and holds the light guide member so that the light guide unit and the light emitting module do not come into contact with each other.

  In the illumination light source according to one aspect of the present invention, a protrusion is formed on the inner surface of the cover member, and the cover member is configured to lock the light guide member with the protrusion. The optical member may be held.

  In the illumination light source according to one aspect of the present invention, the light guide member further includes a plate-like plate-like portion having a main surface, and the light guide portion faces the light emitting module from the main surface. The cover member may hold the light guide member by the protrusions engaging the plate-like part.

  In the illumination light source according to an aspect of the present invention, the plate-like portion further includes a contact surface that is a surface different from the main surface and contacts a part of the inner surface of the cover member, The cover member may hold the light guide member by sandwiching the plate-like portion between a part of the inner surface and the protrusion.

  In the illumination light source according to one aspect of the present invention, the opening includes an annular flange, the contact surface contacts the flange, and the cover member includes the flange and the flange. The light guide member may be held by sandwiching the plate-like portion with the protruding portion.

  In the illumination light source according to one aspect of the present invention, the plate-like portion includes a side peripheral portion configured to surround the main surface, and the side peripheral portion includes a step having the contact surface. You may have a part.

  Further, in the illumination light source according to one aspect of the present invention, the plate-like portion is disk-shaped, a part of a side surface of the plate-like portion is a first plane, and the cover member further includes: You may have a 2nd plane contact | abutted to the said 1st plane.

  In the illumination light source according to one aspect of the present invention, the casing may be a bottomed cylindrical body having a side wall portion and a bottom portion, and the bottom portion may include a connection portion having a screwing hole.

  In the illumination light source according to one aspect of the present invention, the connection portion is a cylindrical body that protrudes outward from the bottom portion, and the thickness of the connection portion increases as it approaches the bottom portion. Good.

  In the illumination light source according to one aspect of the present invention, the connection portion may be a cylindrical body that protrudes inward from the bottom portion.

  In the illumination light source according to one aspect of the present invention, the cover member may include a truncated cone-shaped cylindrical body part having an opening that is integral with the opening and has a diameter larger than that of the opening. Good.

  ADVANTAGE OF THE INVENTION According to this invention, the light source for illumination to which components were firmly fixed by simple structure can be provided.

It is a general-view perspective view which shows an example of the LED lamp which concerns on Embodiment 1 of this invention. It is a disassembled perspective view which shows an example of the LED lamp which concerns on Embodiment 1 of this invention. It is a cross-sectional perspective view which shows an example of the LED lamp which concerns on Embodiment 1 of this invention. It is a top view which shows an example of the light guide member which concerns on Embodiment 1 of this invention. It is a side view which shows an example of the light guide member which concerns on Embodiment 1 of this invention. It is sectional drawing which shows an example of the light guide member which concerns on Embodiment 1 of this invention. It is a perspective view which shows an example of the front cover which concerns on Embodiment 1 of this invention. It is sectional drawing which shows an example of the front cover which concerns on Embodiment 1 of this invention. It is a side view which shows an example of the housing | casing which concerns on Embodiment 1 of this invention. It is sectional drawing which shows an example of the housing | casing which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the positional relationship of the light guide part and LED module which concern on Embodiment 1 of this invention. It is sectional drawing which shows the positional relationship of the light guide member which concerns on Embodiment 1 of this invention, and the projection part of a front cover. It is a side view which shows an example of the housing | casing which concerns on the modification of Embodiment 1 of this invention. It is sectional drawing which shows an example of the housing | casing which concerns on the modification of Embodiment 1 of this invention. It is a general-view perspective view which shows an example of the illuminating device which concerns on Embodiment 2 of this invention. It is a disassembled perspective view which shows a part of illuminating device which concerns on Embodiment 2 of this invention. It is a general-view perspective view which shows an example of the irradiation direction of the LED lamp in the illuminating device which concerns on Embodiment 2 of this invention.

  Below, the light source for illumination and the illuminating device which concern on embodiment of this invention are demonstrated in detail using drawing. 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 arrangements, 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 mimetic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same structural member.

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

(Embodiment 1)
An illumination light source according to Embodiment 1 of the present invention includes a light emitting module, a light guiding member that is disposed on the light emitting side of the light emitting module and includes a light guiding unit that controls light distribution of the emitted light, and is emitted from the light emitting module. A cover member having an opening that allows light that has passed through the light guide portion to pass therethrough, and a housing that is fixed to the cover member and configured to cover the light emitting module together with the cover member. The light guide member is held so as to surround the member and the light guide unit and the light emitting module are not in contact with each other.

  First, the LED lamp which concerns on Embodiment 1 of this invention is demonstrated. The LED lamp according to the present embodiment is an example of an illumination light source that replaces a conventional light bulb shaped lamp.

[Overall configuration of LED lamp]
First, an example of the configuration of the LED lamp according to this embodiment will be described with reference to FIGS. FIG. 1 is an overview perspective view showing an example of an LED lamp according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view showing an example of the LED lamp according to Embodiment 1 of the present invention.

  The LED lamp 100 according to the present embodiment is a halogen bulb-type LED lamp (LED bulb) with a reflector, which is an alternative to the halogen bulb with a reflector. As shown in FIGS. 1 and 2, the LED lamp 100 includes an LED module 110, a light guide member 120, a front cover 130, a support base 140, a housing 150, and a drive circuit (not shown). .

  Hereinafter, each constituent member and connection form of the LED lamp 100 will be described in detail with reference to FIG. FIG. 3 is a cross-sectional perspective view showing an example of the LED lamp according to the embodiment of the present invention.

[LED module]
The LED module 110 is an example of a light emitting module having a light emitting element, and emits light of a predetermined color (wavelength) such as white. As shown in FIG. 3, the LED module 110 is placed on a support base 140 and emits light by electric power supplied from a drive circuit (not shown) housed in the housing 150.

  As shown in FIGS. 2 and 3, the LED module 110 includes a base 111 and a plurality of LED elements 112 mounted on the base 111. In the present embodiment, as shown in FIG. 2, three LED elements 112 are used.

  The base 111 is an LED mounting board for mounting the LED element 112. The base 111 is, for example, a ceramic substrate made of ceramics such as alumina, a resin substrate made of resin, or a metal base substrate that is insulation-coated with a metal as a base.

  As the base 111, for example, as shown in FIG. 2, a plate-like substrate having a substantially circular shape in plan view can be used. As the base 111, a plate-like substrate having a substantially rectangular shape in plan view may be used. Moreover, it is preferable to comprise the base 111 with a material with high heat conductivity.

  Although not shown, metal wiring for electrically connecting the plurality of LED elements 112 is patterned on the surface of the base 111. Further, the base 111 is formed with a pair of electrode terminals (feeding terminals) connected to the metal wiring. The pair of electrode terminals are electrically connected to the drive circuit by a pair of lead wires and the like, and receive DC power supplied to the LED element 112.

  The LED element 112 is a packaged SMD (Surface Mount Device) type LED element. The LED element 112 includes, for example, a container having a recess, an LED chip mounted in the recess, and a sealing member sealed in the recess.

  The LED chip is a semiconductor light emitting element that emits light with a predetermined power, and is a bare chip that emits monochromatic visible light. In this embodiment, a blue LED chip that emits blue light when energized is used. The blue LED chip is a semiconductor light emitting element configured by forming a semiconductor layer made of an InGaN-based material on a sapphire substrate, for example. Specifically, as the blue LED chip, a gallium nitride based semiconductor light emitting device having a central wavelength of 440 nm to 470 nm can be used.

  The sealing member is made of, for example, resin and is formed so as to seal the LED chip. For example, the sealing member is formed in a semispherical shape or a dome shape so as to cover the LED chip. In addition, you may form a sealing member so that the surface may become flat shape so that it may not protrude from a container.

  The sealing member is mainly composed of a translucent material. At this time, when it is necessary to convert the wavelength of the light of the LED chip into a predetermined wavelength, a wavelength conversion material is mixed into the translucent material. The sealing member in the present embodiment is a wavelength conversion member that includes a phosphor as a wavelength conversion material and converts the wavelength (color) of light emitted from the LED chip. As such a sealing member, for example, an insulating resin material (phosphor-containing resin) containing phosphor particles can be used. The phosphor particles are excited by light emitted from the LED chip and emit light of a desired color (wavelength).

  As a translucent resin material constituting the sealing member, for example, a silicone resin can be used. Further, as the phosphor particles to be contained in the sealing member, for example, when the LED chip is a blue LED chip, in order to obtain white light, for example, YAG (yttrium, aluminum, garnet) -based yellow phosphor particles are used. Can be used. Thereby, a part of blue light emitted from the LED chip is wavelength-converted into yellow light by the yellow phosphor particles contained in the sealing member. And the blue light which was not absorbed by the yellow fluorescent substance particle and the yellow light wavelength-converted by the yellow fluorescent substance particle are mixed, and white light radiates | emits from a sealing member.

  As described above, the LED module 110 is disposed between the light guide member 120 and the support base 140. The LED module 110 is held on the support base 140 by, for example, a module holding member (not shown) sandwiching the base 111.

[Light guide member]
The light guide member 120 is a member that guides light emitted from the LED module 110. The light guide member 120 in the present embodiment guides the light of the LED module 110 and radiates it outside the lamp.

  The light guide member 120 is disposed on the light emitting side of the LED module 110 and is made of a light transmissive material. As the translucent material, for example, a translucent resin material or a glass material can be used. Specifically, the light guide member 120 can be produced by processing and forming a translucent material into a predetermined shape.

  As shown in FIGS. 2 and 3, the light guide member 120 according to the present embodiment includes a light guide part 121 and a plate-like part 122.

  Here, a detailed configuration of the light guide member 120 will be described with reference to FIGS. 4A to 4C with reference to FIGS. 2 and 3. FIG. 4A is a plan view showing an example of a light guide member according to Embodiment 1 of the present invention. FIG. 4B is a side view showing an example of the light guide member according to Embodiment 1 of the present invention. FIG. 4C is a cross-sectional view showing an example of the light guide member according to Embodiment 1 of the present invention. 4C is a cross section passing through the center of the light guide 121 and a cross section orthogonal to the plate-like portion 122 (AA cross section shown in FIG. 4A).

  As shown in FIGS. 4B and 4C, the light guide 121 has a recess 121a. The plate-like portion 122 includes a first main surface 123, a second main surface 124, and a side peripheral portion 125. Note that the second main surface 124 of the plate-like portion 122 forms a part of the outline of the LED lamp 100.

  The light guide unit 121 controls the light distribution of the emitted light from the LED module 110. That is, the light guide unit 121 controls the light distribution characteristics of the emitted light. For example, the light guide unit 121 radiates light in a predetermined direction from the plate-like unit 122 by narrowing light emitted from the LED module 110.

  The light guide unit 121 extends from the main surface (first main surface 123) of the plate-shaped unit 122 toward the LED module 110. For example, the light guide unit 121 is configured to guide the light from the LED element 112 to the plate-like unit 122. Specifically, the light guide unit 121 is shaped so that once incident light reaches the boundary surface with the outside (air layer) (the outer surface of the light guide unit 121), the light is reflected to the inside at the boundary surface. It consists of That is, the outer surface of the light guide unit 121 is a reflective surface. At this time, part of the light incident on the light guide unit 121 is emitted to the outside of the light guide unit 121 as leakage light.

  The recess 121 a is a cylindrical recess configured to surround the LED element 112. As shown in FIG. 3, the recess 121 a is provided so that the light guide 121 covers the LED element 112. Thereby, the light from the LED element 112 can be efficiently incident on the light guide unit 121.

  The light guide unit 121 is provided to correspond to the number of LED elements 112. In the present embodiment, as shown in FIGS. 2 and 4A, three light guides 121 are provided so as to correspond to the three LED elements 112, respectively. Note that a plurality of LED elements 112 may correspond to one light guide unit 121.

  The plate-like part 122 is a flat part constituting a boundary plane with the outside of the lamp, and radiates light that has passed through the three light guide parts 121 to the outside of the lamp. That is, the plate-like portion 122 is an example of a light emitting portion that emits light to the outside of the lamp, and the second main surface 124 is a light emitting surface.

  The plate-like part 122 is plate-like. In the present embodiment, as shown in FIG. 4A, the shape of the plate-like portion 122 when viewed from above is substantially circular. That is, the plate-like portion 122 has a disc shape.

  The first main surface 123 is a main surface that faces the LED module 110 among the main surfaces of the plate-like portion 122. A light guide 121 is provided on the first main surface 123 so as to protrude toward the LED module 110.

  The second main surface 124 is a main surface opposite to the LED module 110 among the main surfaces of the plate-like portion 122. The second main surface 124 is a light emitting surface and faces the outside of the LED lamp 100. That is, the second main surface 124 is exposed to the outside of the LED lamp 100.

  The side periphery 125 is configured to surround the first main surface 123 and the second main surface 124. In other words, the side peripheral portion 125 is a portion corresponding to the side surface of the plate-like portion 122. Further, the side peripheral portion 125 has a step portion 126.

  As shown in FIGS. 4B and 4C, the side peripheral portion 125 includes a large-diameter portion 125a and a small-diameter portion 125b smaller than the diameter of the large-diameter portion 125a. That is, the step portion 126 is formed in the side peripheral portion 125 due to the difference in diameter between the large diameter portion 125a and the small diameter portion 125b.

  The surface surrounded by the large diameter portion 125a is the first main surface 123, and the surface surrounded by the small diameter portion 125b is the second main surface 124. Accordingly, the second main surface 124 is smaller than the first main surface 123.

  The step portion 126 has a contact surface 126a. The contact surface 126 a is a surface different from the first main surface 123 and contacts a part of the inner surface of the front cover 130. Specifically, as shown in FIGS. 4B and 4C, the contact surface 126a is the upper surface of the large-diameter portion 125a (the surface facing the first main surface 123).

  Further, as shown in FIG. 4B, the side periphery 125 is provided with a first plane 127. That is, a part of the side surface of the plate-like portion 122 is the first plane 127. The first plane 127 is in contact with the second plane 136 of the front cover 130.

  As shown in FIG. 3, the light guide member 120 is held by the front cover 130. The method by which the front cover 130 holds the light guide member 120 will be described in detail later.

  As described above, in the light guide member 120, the light incident on the light guide unit 121 from the LED module 110 (LED element 112) repeats internal reflection on the outer surface (boundary surface with the outside) of the light guide unit 121. It progresses toward the shape part 122. Most of the light is emitted from the plate-like portion 122 (second main surface 124) to the outside of the lamp, and the rest is emitted from the light guide portion 121 to the inside of the lamp as leakage light.

[front cover]
The front cover 130 is an example of a cover member configured to cover the LED module 110 together with the housing 150 and to surround the light guide member 120. The front cover 130 holds the light guide member 120 so that the light guide unit 121 and the LED module 110 do not contact each other. The front cover 130 forms part of the outline of the LED lamp 100.

  The front cover 130 is made of, for example, a light shielding material. For example, a resin material such as polybutylene terephthalate (PBT) can be used for the front cover 130. For example, the front cover 130 is integrally formed by resin molding using an insulating resin material such as PBT.

  As shown in FIGS. 2 and 3, the front cover 130 includes a cover main body 131 and a protrusion 134. The cover body 131 has a first opening 132 and a second opening 133.

  Here, a detailed configuration of the front cover 130 will be described with reference to FIGS. 5A and 5B with reference to FIGS. FIG. 5A is a perspective view showing an example of a front cover according to Embodiment 1 of the present invention. FIG. 5B is a cross-sectional view showing an example of the front cover according to Embodiment 1 of the present invention.

  FIG. 5B shows a cross section including the lamp axis. The lamp axis is the central axis of the LED lamp 100. Specifically, it is a line passing through the center of the circle when the LED lamp 100 is viewed in plan. For example, the central axis is a line passing through the centers of the first opening 132 and the second opening 133.

  As shown in FIGS. 5A and 5B, the cover main body 131 includes a cylindrical body 131a, a first opening 131b, and a second opening 131c. The cover body 131 has a funnel shape (a trumpet shape) and is configured such that the first opening 132 of the first opening 131b is smaller than the second opening 133 of the second opening 131c. The cylindrical portion 131a, the first opening 131b, and the second opening 131c are integrally formed.

  The cylinder part 131a is a truncated cone-like cylinder. Specifically, the cylindrical portion 131a is configured by a substantially cylindrical member whose inner and outer diameters gradually change from the first opening 131b side toward the second opening portion 131c side.

  The outer diameter of the cylindrical portion 131a on the second opening 131c side is substantially equal to the outer diameter of the casing 150 on the front cover 130 side. For example, the outer diameter of the cylindrical body 131a on the second opening 131c side is larger by the thickness of the housing 150 than the outer diameter of the second opening 131c. That is, as shown in FIG. 5B, a step is formed between the cylindrical body 131a and the second opening 131c.

  Thereby, as shown in FIG. 3, the step surface of the step (the lower end surface of the cylindrical portion 131 a) comes into contact with the end surface of the housing 150. The housing 150 can support the front cover 130 by the end surface of the housing 150 coming into contact with the lower end surface of the cylindrical portion 131a.

  In addition, a protrusion 134 is formed on the inner surface of the cylindrical portion 131a. The front cover 130 holds the light guide member 120 by the protrusions 134 engaging the light guide member 120. Specifically, as shown in FIG. 3, the front cover 130 holds the light guide member 120 by the projections 134 engaging the plate-like part 122.

  The first opening 131b is an opening outside the lamp. The first opening 131b is configured by a substantially cylindrical member. The first opening 131b allows the light emitted from the LED module 110 and passing through the light guide 121 to pass therethrough. That is, the light emitted from the LED module 110 and passing through the light guide 121 passes through the first opening 132 of the first opening 131b.

  In addition, the 1st opening 132 is block | closed with the light guide member 120 so that it may understand with reference to FIG.2 and FIG.3. Specifically, the first opening 131 b comes into contact with the side peripheral portion 125 of the plate-like portion 122 of the light guide member 120. As a result, the light guide member 120 closes the first opening 132.

  The first opening 131 b has an annular flange portion 135. The flange portion 135 contacts the light guide member 120. The front cover 130 holds the light guide member 120 by the flange portion 135 and the projecting portion 134 sandwiching the plate-like portion 122 of the light guide member 120. The protrusion 134 and the flange portion 135 will be described in detail later.

  As shown in FIGS. 5A and 5B, the first opening 131 b is provided with a second plane 136. The second plane 136 is a plane provided for positioning the light guide member 120 and abuts on the first plane 127 of the light guide member 120.

  In the present embodiment, the planar view shapes of the light guide member 120 and the front cover 130 are both substantially circular. For this reason, the light guide member 120 and the front cover 130 are rotatable about the lamp axis. Further, the light guide member 120 does not contact the LED module 110 and is held only by the front cover 130.

  On the other hand, in the present embodiment, the first plane 127 and the second plane 136 are in contact with each other, so that the rotation around the lamp axis is suppressed, and the light guide member 120 can be positioned in the rotational direction. Become. Thereby, the positional relationship between the light guide unit 121 and the LED element 112 can also be determined by arranging the LED module 110 at a predetermined position.

  The second opening 131c is an opening on the housing 150 side. The second opening 131c is configured by a substantially cylindrical member having a constant inner diameter and outer diameter. As shown in FIG. 3, the second opening 131c is a connection portion with the housing 150. Specifically, the outer peripheral surface of the second opening 131c and the inner peripheral surface of the housing 150 are in surface contact. ing.

  A locking portion 137 is provided in the second opening 131c. The locking portion 137 locks the second opening 131 c and the housing 150 by being locked to the locking portion 155 of the housing 150. Specifically, the locking portion 137 is a hole as shown in FIGS. 5A and 5B. The hole may be a through hole or a recess.

  On the other hand, the locking part 155 of the housing 150 is a convex part. The locking portion 137 and the locking portion 155 are locked to each other by inserting the locking portion 155 that is a convex portion into the locking portion 137 that is a hole.

  As described above, the front cover 130 is configured to surround the light guide member 120, and holds the light guide member 120 so that the light guide unit 121 and the LED module 110 do not come into contact with each other. The light guide member 120 has a first opening 132 and radiates light from the LED module 110 to the outside of the lamp from the first opening 132.

[Support stand]
The support base 140 (module plate) is a support member that supports the LED module 110. The support base 140 includes a flat plate portion 141 on which the LED module 110 is placed and a side wall portion 142 erected on the flat plate portion 141. As shown in FIGS. 2 and 3, the support base 140 is a cap-shaped member in which the flat plate portion 141 is a bottom portion and the side wall portion 142 is a peripheral portion. As shown in FIG. 3, the support base 140 is configured to close the second opening 133 of the front cover 130.

  The flat plate portion 141 has a disk shape and has a main surface that is a plane orthogonal to the lamp axis. The main surface of the flat plate portion 141 on the front cover 130 side is a mounting surface on which the LED module 110 is mounted. The placement surface is composed only of a flat surface having no recess. Thereby, since the support stand 140 can be processed easily, the support stand 140 can be produced at low cost.

  As shown in FIG. 2, the flat plate portion 141 is provided with a through hole. For example, the lead wire is inserted through the through hole from the housing 150 side toward the front cover 130 side (upward direction shown in FIGS. 2 and 3). The lead wire is an example of a cable for supplying power to the LED module 110.

  The side wall part 142 is provided around the flat plate part 141 so as to protrude from the flat plate part 141 toward the side opposite to the LED module 110. The side wall 142 is provided with a step as shown in FIG.

  As shown in FIG. 3, the support base 140 is connected to the housing 150 by the outer peripheral surface of the side wall portion 142 being in contact with the inner peripheral surface of the housing 150. Thereby, the heat of the LED module 110 conducted to the support base 140 can be conducted directly to the housing 150.

  Thus, the support stand 140 also functions as a heat radiating member (heat sink) for radiating heat generated by the LED module 110 (LED element 112). In order to efficiently conduct heat, the support base 140 is made of a metal material mainly composed of aluminum (Al), copper (Cu), iron (Fe), or the like, or a resin material having high thermal conductivity. It is preferable. In the present embodiment, for example, the support base 140 is made of aluminum.

[Case]
As shown in FIG. 3, the housing 150 is a bottomed cylindrical member configured to surround the support base 140. The housing 150 is thermally connected to the LED module 110 via the support base 140. The casing 150 is an outer member (outer casing), and the outer surface of the casing 150 is exposed outside the lamp (in the atmosphere). Specifically, the housing 150 forms an outline of the LED lamp 100 together with the plate-like portion 122 of the light guide member 120 and the front cover 130.

  Thereby, the housing | casing 150 functions also as a heat radiator. That is, the housing 150 can dissipate the heat of the LED module 110 conducted to the housing 150 through the support base 140 to the outside of the lamp.

  A front cover 130 is fixed to the housing 150. The housing 150 is configured to cover the LED module 110 together with the front cover 130. In other words, the housing 150 has a shape that covers the LED module 110 together with the front cover 130.

  The casing 150 is integrally formed by resin molding using, for example, an insulating resin material such as PBT.

  As shown in FIGS. 2 and 3, the housing 150 includes a side wall portion 151 and a bottom portion 152. The bottom portion 152 includes a connection portion 153 having a screw hole 154. The housing 150 includes a locking portion 155 and a protrusion 156 on the inner surface.

  Here, a detailed configuration of the housing 150 will be described with reference to FIGS. 6A and 6B with reference to FIGS. FIG. 6A is a side view showing an example of a housing according to Embodiment 1 of the present invention. FIG. 6B is a cross-sectional view showing an example of the housing according to Embodiment 1 of the present invention. FIG. 6B shows a cross section including the lamp axis.

  The side wall portion 151 is a cylinder configured to surround the bottom portion 152. The side wall portion 151 supports the front cover 130 and the support base 140. As shown in FIGS. 6A and 6B, the side wall 151 includes a first side wall 151a and a second side wall 151b.

  The first side wall portion 151a is constituted by a substantially cylindrical member having a constant inner diameter and outer diameter. As shown in FIG. 3, the first side wall portion 151 a is a connection portion between the front cover 130 and the support base 140. The inner surface of the first side wall portion 151 a is in surface contact with the outer peripheral surface of the second opening 131 c and is in surface contact with the outer peripheral surface of the side wall portion 142.

  The first side wall portion 151 a is configured such that the opening is closed by the support base 140. That is, the first side wall 151 a of the housing 150 is covered with the support base 140.

  Further, as shown in FIGS. 2 and 6B, the first side wall portion 151a is provided with a locking portion 155. The locking part 155 is a convex part, and locks into the locking part 137 that is a hole of the front cover 130 (second opening 131c).

  Specifically, the front cover 130 is pushed into the housing 150 by pushing the front cover 130 from above the housing 150 (the opening side of the housing 150) and the locking portion 155 is locked to the locking portion 137. Can be fixed. At this time, in order to smoothly insert the front cover 130, an inclination is provided on the upper surface of the locking portion 155 which is a convex portion.

  In addition, it is preferable that the 1st side wall part 151a is provided with the some latching | locking part 155. FIG. At this time, the plurality of locking portions 155 are preferably provided at rotationally symmetric positions with the center line of the front cover 130 as an axis. Similarly, the second opening 131c preferably includes a plurality of locking portions 137. Each of the plurality of locking portions 137 is provided at a position corresponding to the plurality of locking portions 155.

  Thereby, since the housing | casing 150 can be latched to the front cover 130 in multiple places, the front cover 130 can be fixed more firmly.

  The second side wall 151b is formed of a substantially cylindrical member whose inner and outer diameters gradually change from the bottom 152 side toward the first side wall 151a. The second side wall portion 151 b is erected on the bottom portion 152. As shown in FIGS. 3 and 6B, a plurality of protrusions 156 are provided on the inner surface of the second side wall 151b.

  The protruding portion 156 is formed in a rib shape so as to protrude inward from the inner surface of the second side wall portion 151b. In addition, the protruding portion 156 is formed in a step shape and has two different flat surfaces facing the first side wall portion 151a side. Of the two planes, the plane edge closer to the inner surface is in contact with the edge of the opening of the side wall 142 of the support base 140 as shown in FIG. Thereby, the protrusion 156 supports the support base 140.

  Of the two planes, another member such as a circuit holder may be in contact with the plane farther from the inner surface as necessary. When it is not necessary to provide a member such as a circuit holder in the LED lamp 100, the protrusion 156 may not be formed in a stepped shape.

  Here, the plurality of protrusions 156 are preferably provided at rotationally symmetric positions with the center line of the second side wall 151b as an axis. Thereby, since the housing | casing 150 can support the support stand 140 in multiple places, it can hold | maintain the support stand 140 more firmly.

  The bottom 152 has a disk shape. As shown in FIGS. 3 and 6B, the bottom portion 152 includes a connection portion 153.

  The connection portion 153 is a cylindrical body that protrudes outward from the bottom portion 152. The thickness of the connection portion 153 increases as the thickness approaches the bottom portion 152. Specifically, the outer diameter of the connection portion 153 gradually increases as the connection portion 153 approaches the bottom portion 152 so that the side view shape of the connection portion 153 becomes a flared shape.

  The connection part 153 has a screw hole 154. The screw hole 154 is a screw hole for connecting to an external connection member. For example, as the screwing hole 154, a screw shape such as M10 can be used. Alternatively, a screw shape such as M8 or M12 may be used.

  A cable or the like is inserted from the outside into the housing 150 through the screw hole 154. The inserted cable is connected to a drive circuit provided in the housing 150 and can supply power to the LED module 110.

  Thereby, since the thickness of the connection part 153 becomes large, the mechanical strength of the connection part 153 can be raised. Specifically, when the external connection member is screwed into the screw hole 154, the connection portion 153 can be prevented from being damaged. This is particularly effective when the casing 150 including the connecting portion 153 is made of resin. Further, when the connecting member is movable, the stress applied to the connecting portion 153 increases, and this case is also particularly effective.

[Positional relationship between light guide and LED module]
Next, the positional relationship between the light guide unit 121 and the LED module 110 will be described with reference to FIG. FIG. 7 is a cross-sectional view showing the positional relationship between the light guide unit and the LED module according to Embodiment 1 of the present invention. 7 is an enlarged view of a region including the LED element 112 and the light guide unit 121 in the cross section shown in FIG.

  In order to efficiently radiate light from the LED element 112 to the outside of the lamp, it is preferable that as much light as possible from the LED element 112 is incident on the light guide unit 121. That is, it is preferable that the LED element 112 and the light guide unit 121 are close to each other.

  For example, the LED element 112 only needs to be covered by the light guide unit 121. Specifically, most of the light emitted from the LED element 112 is made to contact the LED module 110 so that the LED element 112 is disposed in the recess 121a. Is incident on.

  However, the LED module 110 and the light guide unit 121 may be damaged by the light guide unit 121 coming into contact with the LED module 110. For example, when the light guide unit 121 is damaged, the amount of leaked light increases and the amount of light emitted outside the lamp decreases.

  On the other hand, as shown in FIG. 7, the light guide 121 does not contact the LED module 110. Specifically, an air gap exists between the light guide unit 121 and the LED module 110. For example, a gap exists between the LED element 112 and the LED module 110, and the portion of the light guide 121 that is closest to the LED element 112, that is, the portion that forms the recess 121a.

  In addition, it is preferable that any other part of the light guide part 121 does not contact the LED module 110. Moreover, it is preferable that the light guide part 121 does not contact at least the LED element 112.

  Further, a part of the LED element 112 may be located in the recess 121a. Thereby, the light from the LED element 112 can be efficiently incident on the light guide unit 121. The width of the gap between the light guide unit 121 and the LED module 110, that is, the distance from the tip of the light guide unit 121 (the location closest to the LED module 110) to the LED module 110 is, for example, 0.5 to 1.. 0 mm.

  As described above, in the LED lamp 100 according to the present embodiment, since the light guide unit 121 does not contact the LED module 110, it is possible to suppress the generation of scratches.

[Positional relationship between light guide member and front cover]
Next, the positional relationship between the light guide member 120 and the front cover 130 will be described with reference to FIG. FIG. 8 is a cross-sectional view showing the positional relationship between the light guide member and the LED module according to Embodiment 1 of the present invention. 8 is an enlarged view of a region including the protrusion 134 in the cross section shown in FIG.

  As shown in FIG. 8, the protrusion 134 is provided so as to protrude from the inner surface of the front cover 130. For example, the protrusion 134 has a support surface 134 a that abuts a part of the first main surface 123 of the light guide member 120. The support surface 134 a supports the light guide member 120 by contacting a part of the first main surface 123. The support surface 134a is a surface parallel to the opening surface (first opening 132) of the first opening 131b.

  Moreover, the protrusion part 134 has the inclined surface 134b. The inclined surface 134b is a surface inclined with respect to the opening surface (first opening 132) of the first opening 131b. When the light guide member 120 is inserted between the flange portion 135 and the support surface 134a, the light guide member 120 can be smoothly inserted by the inclined surface 134b. The light guide member 120 is inserted in the direction from the second opening 133 of the front cover 130 toward the first opening 132 (upward direction in FIG. 8).

  Thus, the front cover 130 holds the light guide member 120 by supporting the first main surface 123 of the plate-like portion 122 by the support surface 134 a of the protrusion 134.

  Further, the light guide member 120 is in contact with the flange portion 135. Specifically, the step portion 126 formed by the large diameter portion 125a and the small diameter portion 125b and the flange portion 135 are in contact with each other. More specifically, the contact surface 126 a of the stepped portion 126 is in contact with the first flange surface 135 a of the flange portion 135. The first flange surface 135a is a part of the inner surface of the front cover 130 and is a surface facing the support surface 134a. The light guide member 120 is held by the front cover 130 by the first flange surface 135a and the support surface 134a sandwiching the plate-like portion 122 (large diameter portion 125a).

  The light guide member 120 is held by the front cover 130 so as to close the first opening 131b. Specifically, the side peripheral surface of the small diameter portion 125 b is in surface contact with the second flange surface 135 b of the flange portion 135. For example, the upper end surface of the front cover 130 and the second main surface 124 of the light guide member 120 are flush with each other. Thereby, it can suppress that a foreign material etc. penetrate | invade into the inside of a lamp from the lamp exterior.

  In this way, the front cover 130 holds the plate-like portion 122 of the light guide member 120, so that the light guide portion 121 is held in a hollow state so that the light guide portion 121 does not contact the LED module 110. Is done. Moreover, since it is only necessary to fit the plate-like portion 122 between the projection portion 134 and the flange portion 135, the front cover 130 and the light guide member 120 can be firmly fixed with a simple configuration. In addition, since the projection part 134 and the flange part 135 can be integrally formed with the front cover 130, a mechanism for holding the light guide member 120 can be easily formed.

  For example, the front cover 130 preferably includes a plurality of protrusions 134. More preferably, the front cover 130 may include three or more protrusions 134. At this time, the plurality of protrusions 134 are preferably provided at rotationally symmetric positions with the center line of the front cover 130 as an axis.

  Thereby, since the front cover 130 can support the light guide member 120 at a plurality of locations, the light guide member 120 can be held more firmly.

[Summary]
As described above, the LED lamp 100 according to the present embodiment includes the LED module 110 and the light guide member 120 that is disposed on the light emission side of the LED module 110 and includes the light guide unit 121 that controls the light distribution of the emitted light. A front cover 130 having a first opening 131b that allows light that has been emitted from the LED module 110 and passed through the light guide 121 to pass therethrough, and is fixed to the front cover 130 so as to cover the LED module 110 together with the front cover 130 The front cover 130 is configured to surround the light guide member 120 and holds the light guide member 120 so that the light guide unit 121 and the LED module 110 do not come into contact with each other. To do.

  Thereby, since the light guide part 121 does not contact | abut with the LED module 110, the damage by the light guide part 121 and LED module 110 contacting can be prevented. In addition, since the front cover 130 holds the light guide member 120, it is not necessary to perform processing for positioning the light guide member 120 on the LED module 110, so that the light guide member 120 can be held with a simple configuration. Thus, according to the present embodiment, it is possible to provide the LED lamp 100 in which components are firmly fixed with a simple configuration.

  In addition, a protrusion 134 is formed on the inner surface of the front cover 130, and the front cover 130 holds the light guide member 120 by the protrusion 134 engaging the light guide member 120.

  Thereby, the light guide member 120 can be held with a simple configuration in which the protrusion 134 is provided on the inner surface of the front cover 130. For example, the front cover 130 having the protrusions 134 can be easily manufactured by integral molding using a resin material.

  The light guide member 120 further includes a plate-like plate-like portion 122 having a first main surface 123. The light guide portion 121 extends from the first main surface 123 toward the LED module 110, and is arranged in front. The cover 130 holds the light guide member 120 by the protrusions 134 engaging the plate-like part 122.

  Thereby, since the projection part 134 latches the plate-shaped part 122, the fall of the taking-out efficiency of the light to the exterior of a lamp | ramp can be suppressed. For example, since it is not necessary to provide the light guide part 121 with a shape for locking to the protrusion part 134, the light from the LED element 112 is efficiently guided to the plate-like part 122. It can be shaped. Therefore, the light from the LED element 112 can be efficiently emitted to the plate-like portion 122 and the outside of the lamp.

  Further, the plate-like portion 122 further includes a contact surface 126a that is a surface different from the first main surface 123 and contacts a part of the inner surface of the front cover 130. The front cover 130 is a part of the inner surface. And the protrusion 134 hold the light guide member 120 by sandwiching the plate-like portion 122.

  As a result, a part of the inner surface of the front cover 130 and the protruding portion 134 sandwich the plate-like portion 122, so that the light guide member 120 can be held more firmly with a simple configuration.

  The first opening 131 b has an annular flange portion 135, the abutting surface 126 a abuts on the flange portion 135, and the front cover 130 has a flange portion 135 and a protruding portion 134 that form the plate-like portion 122. The light guide member 120 is held by pinching.

  Thereby, since the flange part 135 and the projection part 134 pinch | interpose the plate-shaped part 122, the light guide member 120 can be hold | maintained more firmly by simple structure. For example, the front cover 130 having the flange portion 135 and the protruding portion 134 can be easily manufactured by integral molding using a resin material.

  The plate-like portion 122 has a side peripheral portion 125 configured to surround the first main surface 123, and the side peripheral portion 125 has a stepped portion 126 having a contact surface 126a.

  Accordingly, the side circumferential portion 125 has the step portion 126, and the step portion 126 and the flange portion 135 come into contact with each other. For example, by appropriately adjusting the height of the step and the thickness of the flange portion 135, the light emission The surface (second main surface 124 of the plate-like portion 122) and the end surface (flange portion 135) of the front cover 130 can be flush with each other.

  Further, the plate-like portion 122 has a disk shape, a part of the side surface of the plate-like portion 122 is a first plane 127, and the front cover 130 is further in contact with the first plane 127. Have

  As a result, each of a part of the side surface of the plate-like portion 122 and the front cover 130 has a flat surface that comes into contact with each other. That is, since the first plane 127 and the second plane 136 are locked, the light guide member 120 is prevented from rotating with respect to the front cover 130, and the light guide member 120 can be positioned.

  The housing 150 is a bottomed cylindrical body having a side wall portion 151 and a bottom portion 152, and the bottom portion 152 includes a connection portion 153 having a screwing hole 154.

  Thereby, since the housing | casing 150 has the screwing hole 154, the LED lamp 100 can be firmly fixed by screwing a predetermined connection member.

  Further, the connecting portion 153 is a cylindrical body that protrudes outward from the bottom portion 152, and the thickness of the connecting portion 153 increases as it approaches the bottom portion 152.

  Thereby, since the thickness of the connection part 153 becomes so large that it approaches the bottom part 152, the mechanical strength of the connection part 153 can be raised. For example, this is particularly effective when the casing 150 having the connection portion 153 is made of resin. In addition, when the connecting member to be screwed into the screwing hole 154 is movable, the stress applied to the connecting portion 153 increases, and this case is also particularly effective.

  The front cover 130 includes a truncated cone-shaped cylindrical body 131a that is integral with the first opening 131b and has an opening having a larger diameter than the opening of the first opening 131b.

  Thereby, even when the diameter of the light guide member 120 and the diameter of the housing 150 are different, it is possible to appropriately hold the light guide member 120 and protect the LED module 110 (cover the LED module 110). Can do.

  In the present embodiment, the example in which the drive circuit for causing the LED module 110 to emit light is disposed in the housing 150 has been described, but the present invention is not limited thereto. For example, a drive circuit may be built in an external device, and the LED lamp 100 may receive power for causing the LED module 110 to emit light from the external device.

(Modification)
Below, the LED lamp which concerns on the modification of this Embodiment is demonstrated using FIG. 9A and 9B. FIG. 9A is a side view showing an example of a housing according to a modification of the present embodiment. FIG. 9B is a cross-sectional view showing an example of a housing according to a modification of the present embodiment. FIG. 9B shows a cross section including the lamp axis.

  The LED lamp according to the modification of the present embodiment is different from the LED lamp 100 in that a housing 250 is provided instead of the housing 150. Specifically, the shape of the bottom of the housing is different. Below, it demonstrates focusing on a different point from Embodiment 1. FIG.

  As shown in FIGS. 9A and 9B, the housing 250 includes a side wall portion 151 and a bottom portion 252. The side wall portion 151 is the same as that in the first embodiment, and thus the description thereof is omitted below.

  The bottom portion 252 has a disk shape. As shown in FIG. 9B, the bottom portion 252 includes a connection portion 253.

  The connection portion 253 is a cylindrical body that protrudes inward from the bottom portion 252. The connection part 253 is comprised from the substantially cylindrical member with a uniform outer diameter. As shown in FIG. 9B, the connection portion 253 has a screw hole 154. By increasing the thickness of the connection portion 253, the mechanical strength of the connection portion 253 can be increased. Therefore, it is possible to prevent the connection portion 253 from being damaged when a predetermined connection member is screwed into the screw hole 154.

  As described above, in the LED lamp according to the modification of the present embodiment, the connection portion 253 is a cylindrical body that protrudes inward from the bottom portion 252.

  Thereby, since the thickness of the connection part 253 can be enlarged, the mechanical strength of the connection part 253 can be raised. Therefore, it is possible to prevent the connection portion 253 from being damaged when a predetermined connection member is screwed into the screw hole 154. Moreover, since the connection part 253 protrudes inward, an LED lamp can be reduced in size compared with the case where it protrudes outward.

(Embodiment 2)
An illumination device according to Embodiment 2 of the present invention is an illumination device including the above-described illumination light source. For example, the illumination device according to the second embodiment includes the LED lamp 100 according to the first embodiment.

  First, an example of the structure of the lighting device according to this embodiment will be described with reference to FIGS. FIG. 10 is an overview perspective view showing an example of a lighting apparatus according to Embodiment 2 of the present invention. FIG. 11 is an exploded perspective view showing a part of the lighting apparatus according to Embodiment 2 of the present invention. FIG. 12 is an overview perspective view showing an example of the irradiation direction of the LED lamp in the illumination device according to Embodiment 2 of the present invention.

  As shown in FIGS. 10 and 11, the illumination device 300 according to Embodiment 2 includes the LED lamp 100, a connection member 310, and a main body 320. Here, an example in which the lighting device 300 includes a plurality of LED lamps 100 and a plurality of connection members 310 is shown, but the lighting device 300 may include one LED lamp 100 and one connection member 310. Good. Below, the example provided with the two LED lamps 100 and the two connection members 310 is demonstrated as an example.

  The LED lamp 100 is an example of a light source unit of the lighting device 300. Since the LED lamp 100 is the same as that of the first embodiment or its modification, the description thereof is omitted below.

  The connection member 310 mechanically connects the main body 320 and the LED lamp 100. The shape of the connection member 310 can be modified so that the position and orientation of the LED lamp 100 can be changed with the connection portion with the main body 320 as a fulcrum. That is, the connection member 310 is made of a flexible material and shape. The connection member 310 is made of, for example, a resin material or a metal material such as aluminum. Details of the connection member 310 will be described later.

  The main body 320 has a power source for supplying power to the LED lamp 100. For example, the main body 320 houses a power source (battery) and a drive circuit for causing the LED module 110 of the LED lamp 100 to emit light. The drive circuit and the LED module 110 are electrically connected by a cable 330 shown in FIG. As a result, the LED lamp 100 need not be provided with a drive circuit, and the LED lamp 100 can be downsized.

  For example, the main body 320 includes a cylinder having an opening and a side cover that covers the opening of the cylinder. For example, the cylinder and the side cover are screwed. By removing the side cover from the cylinder, the power supply and the drive circuit can be stored and taken out. Note that a handle (grip) or the like may be provided on the main body 320 in order to facilitate carrying.

  The cylinder of the main body 320 is made of, for example, a metal material such as aluminum. For example, the cylindrical body of the main body 320 is manufactured by drawing or extrusion, or pressing and welding. The cylindrical body of the main body 320 may be made of a resin material such as a copolymerized synthetic resin (ABS resin) of acrylonitrile, butadiene and styrene. For example, the cylindrical body of the main body 320 may be manufactured by integral molding using an ABS resin.

  The side cover of the main body 320 is made of a resin material such as plastic, for example. For example, the side cover of the main body 320 is manufactured by integral molding using a resin material. Or the side cover of the main-body part 320 may be comprised from metal materials, such as aluminum, for example.

  In addition, as the housing 150 of the LED lamp 100 according to the present embodiment, a housing having a screwing hole 154 is used instead of a housing having a screwed-type Edison type (E type) base. In the case of using a housing having an E-type base, there is a merit that the light source unit can be appropriately replaced. However, in recent years, long-life LED bulbs are becoming widespread, and the light source unit can be replaced. There is less need.

  On the other hand, by making the light source part replaceable, a member applied to the E-type such as a socket (socket) is required at the end of the connection member 310. As a result, the number of parts increases, which causes problems such as an increase in size and cost of the apparatus.

  On the other hand, the lighting device 300 according to the present embodiment does not require a receiving socket (socket) or the like, so that the number of parts can be reduced and a simple configuration can be realized. Can be achieved.

[Connecting member]
Next, details of the connection member 310 will be described with reference to FIG.

  As shown in FIG. 11, the connection member 310 includes an arm portion 311 and screwing portions 312 and 313. A cable 330 is inserted through the connection member 310.

  The arm portion 311 is an arm-shaped member that can change and fix the LED lamp 100 to a predetermined position and direction. For example, as shown in FIG. 11, the arm portion 311 is a movable flexible pipe, and specifically has a gooseneck structure. Specifically, by applying a force to the arm portion 311, the shape of the arm portion 311 (connection member 310) can be changed so as to arbitrarily change the position and direction of the LED lamp 100. When the application of force to the arm portion 311 is stopped, the shape of the arm portion 311 (connection member 310) is fixed, and the position and direction of the LED lamp 100 can be fixed.

  The screwing portion 312 is provided on the outer peripheral surface of one end portion of the arm portion 311. Specifically, the screwing portion 312 is a connection portion with the LED lamp 100 and is screwed into the screwing hole 154 of the housing 150. The connecting member 310 is connected to the LED lamp 100 by the screwing portion 312 being screwed into the screwing hole 154.

  For example, as the screwing portion 312, a screw shape such as M10 can be used. Alternatively, a screw shape such as M8 or M12 may be used.

  The screwing portion 313 is provided on the outer peripheral surface of the other end portion of the arm portion 311. Specifically, the screwing part 313 is a connection part with the main body part 320. Specifically, the connecting member 310 is connected to the main body 320 by being screwed into a screwing member (for example, a nut) provided in the main body 320 through the through hole of the main body 320. Connected to the unit 320.

  For example, as the screwing portion 313, a screw shape such as M10 can be used. Alternatively, a screw shape such as M8 or M12 may be used.

  As shown in FIG. 11, the connection member 310 has a pipe shape, and the cable 330 is inserted therein. The cable 330 is a cable for supplying power to the LED lamp 100 from a power source built in the main body 320. The ends of the cable 330 are electrically connected to the LED module 110 of the LED lamp 100 and the power source of the main body 320, respectively.

  Thus, since the cable 330 for supplying electric power to the LED module 110 is inserted into the connecting member 310, the insulation and maintainability of the cable 330 can be improved. That is, since the cable 330 is not exposed to the outside of the lighting device 300, it is not accidentally touched by a person, and an electric shock can be prevented. Further, since the cable 330 is not exposed, the appearance can be improved.

[Summary]
As described above, the lighting device 300 according to the present embodiment includes the LED lamp 100 (light source unit) described in the first embodiment, the main body 320 having a power source for supplying power to the LED lamp 100, and the main body. A connection member 310 that mechanically connects the portion 320 and the LED lamp 100, and the shape of the connection member 310 can change the position and orientation of the LED lamp 100 with the connection portion with the main body portion 320 as a fulcrum. Furthermore, it can be deformed.

  Thus, the connection member 310 that connects the LED lamp 100 and the main body 320 can change its shape. For this reason, the LED lamp 100 can be changed to a desired position and a desired direction.

  For example, by applying a force to the LED lamp 100 or the connecting member 310 that illuminates the front of the lighting device 300 as shown in FIG. 12A, the LED lamp 100 is connected as shown in FIG. The irradiation direction can be changed upward and to the right. Or as shown to (c) of FIG. 12, the irradiation direction of the LED lamp 100 can be changed into back and diagonally downward.

  Thus, by applying a force to the LED lamp 100 or the connection member 310, the irradiation direction of the LED lamp 100 can be changed to a desired direction. Specifically, the lighting device 300 can irradiate a desired direction such as forward, backward, rightward, leftward, upward, downward, or diagonal. In addition, since the illuminating device 300 is provided with the two LED lamps 100, it can irradiate a different direction simultaneously.

  Further, by applying a force to the LED lamp 100 or the connecting member 310, the irradiation position of the LED lamp 100 can be changed as shown in FIG. That is, according to lighting apparatus 300 according to the present embodiment, it is possible to irradiate a desired position. In addition, since the illuminating device 300 which concerns on this Embodiment is provided with the two LED lamps 100, it can irradiate a different position simultaneously.

  Thus, the illumination device 300 according to the present embodiment can freely change the irradiation position and the irradiation direction of the LED lamp 100, and can improve the convenience for the user. Moreover, since the main body 320 has a built-in power supply, it can be used as a lighting device even when power from the system power cannot be used, such as during a power failure. Therefore, lighting device 300 according to the present embodiment is useful as an emergency lamp.

  The connection member 310 has a gooseneck structure.

  Thereby, the LED lamp 100 can be easily changed to a desired position and a desired direction.

  The connection member 310 has a pipe shape, and a cable 330 for supplying power from the power source to the LED lamp 100 is inserted therein.

  As a result, the cable 330 is inserted through the connecting member 310 having a pipe shape, so that the cable 330 is not exposed to the outside. For this reason, the insulation and maintainability of the cable 330 can be improved.

  The lighting device 300 includes a plurality of LED lamps 100 and a plurality of connection members 310.

  Thereby, since the plurality of LED lamps 100 are provided, each of the plurality of LED lamps 100 can irradiate different directions and positions. Therefore, various directions and positions can be illuminated simultaneously as needed. In particular, in an emergency or the like, it is possible to irradiate a plurality of locations at the same time, so that convenience for the user can be further improved.

  In addition, although the connection member 310 showed about the example which is a gooseneck structure, it is not restricted to this. The connection member 310 may be formed of any shape and material as long as the position and direction of the light source unit (LED lamp 100) can be changed and fixed.

(Other variations)
The illumination light source and the illumination device according to the present invention have been described based on the above embodiment, but the present invention is not limited to the above embodiment.

  For example, in the above-described embodiment, the example in which the housing 150 includes the connection portion 153 having the screwing hole 154 has been described, but the present invention is not limited thereto. For example, the housing 150 may be a housing having a screw-type Edison type (E type) base. That is, as the casing 150 in the above embodiment, a casing having a cap of a light bulb shaped lamp can be used. Specifically, a housing having a base such as E12, E17, E27, or MR16 can be used as the housing 150.

  As a result, the LED lamp 100 can be mounted on various money receivers (sockets). Therefore, the LED lamp 100 can be used not only as an emergency lamp but also as an illumination lamp used on a daily basis. As described above, by using a housing having an E-type base, the number of parts increases, but it can also be used as a lighting source with very high versatility.

  Further, in the above embodiment, the connection portion 153 of the housing 150 may have a screw shape on the outer surface instead of the screw hole 154. In this case, for example, a screw shape may be formed on the inner surface of the end portion of the pipe-shaped connection member 310.

  Moreover, in said embodiment, although the plate-shaped part 122 of the light guide member 120 showed about the example which has the level | step-difference part 126, it is not restricted to this. In other words, the plate-like portion 122 of the light guide member 120 may have the large-diameter portion 125a without having the small-diameter portion 125b. In this case, a step is generated between the flange portion 135 of the front cover 130 and the second main surface 124 of the plate-like portion 122. That is, the upper end surface of the front cover 130 and the second main surface 124 are not flush with each other.

  Further, in the above-described embodiment, the example in which the protrusion 134 is in contact with the first main surface 123 of the light guide member 120 has been described, but the present invention is not limited thereto. For example, the protruding portion 134 may be locked to the side peripheral portion 125 of the light guide member 120. Specifically, the side circumferential portion 125 may be provided with a locking portion that is a hole. By inserting the protruding portion 134 into the locking portion that is a hole, the protruding portion 134 locks the locking portion. Thereby, the front cover 130 can hold the light guide member 120.

  In the above embodiment, the example in which the protrusion 134 and the flange 135 sandwich the light guide member 120 has been described, but the present invention is not limited thereto. For example, the side peripheral portion 125 of the light guide member 120 may abut on the inner surface of the cylindrical portion 131a of the front cover 130. In this case, the side peripheral portion 125 is not a surface orthogonal to the first main surface 123 and the second main surface 124 but has an inclined surface having the same inclination as the cylindrical body portion 131a. Thereby, the light guide member 120 can be clamped by the inner surface (inclined surface) of the cylindrical portion 131a and the protrusion 134.

  In the above embodiment, the protrusion 134 may be a ring-shaped protrusion along the inner surface of the front cover 130. That is, the protrusion 134 may be an annular protrusion having a flat surface along the opening surface of the first opening 131b. Thereby, even in the case of one protrusion, the light guide member 120 can be firmly fixed.

  Also, in the above embodiment. Although the front cover 130 has been shown as an example of a truncated cone-shaped cylinder, the present invention is not limited to this. For example, the front cover 130 may be a substantially cylinder having a constant inner diameter and outer diameter.

  Moreover, in said embodiment, although the example in which the planar view shape of the LED lamp 100 was substantially circular was shown, it does not restrict to this. For example, the LED lamp 100 may have a substantially rectangular shape in plan view. For example, the LED module 110, the light guide member 120, the front cover 130, the support base 140, and the housing 150 may have a substantially rectangular shape in plan view.

  Further, in the above-described embodiment, an example in which the second main surface 124 of the light guide member 120 is exposed to the outside of the lamp has been described, but the present invention is not limited to this. For example, the second main surface 124 may be covered with a translucent material such as a globe.

  In the above embodiment, the front cover 130 and the housing 150 are fixed by the locking portion 137 and the locking portion 155. However, the present invention is not limited to this. For example, the front cover 130 and the housing 150 may be fixed by an adhesive such as silicone resin or cement.

  In the above embodiment, the case where the LED module 110 is an SMD type LED module using a packaged LED element has been described, but the present invention is not limited thereto. The LED module 110 may be a COB (Chip On Board) type LED module in which a plurality of LED chips are directly mounted on a substrate, and the plurality of LED chips are collectively sealed with a phosphor-containing resin.

  Two or more substrates (LED modules 110) placed on the support base 140 may be arranged. In this case, metal wiring provided on each substrate may be connected by a lead wire or the like through the connection terminal.

  In the above embodiment, the LED module 110 is configured to emit white light by the blue LED chip and the yellow phosphor. However, the present invention is not limited to this. For example, in order to improve color rendering properties, a red phosphor and a green phosphor may be further mixed in addition to the yellow phosphor. Moreover, you may make it discharge | release white light by combining with a blue LED chip | tip using the fluorescent substance containing resin containing a red fluorescent substance and a green fluorescent substance, without using yellow fluorescent substance.

  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, a semiconductor light emitting element such as a semiconductor laser, a light emitting element such as an organic EL (Electro Luminescence), or an inorganic EL may be used.

  In the above embodiment, the LED module 110 is configured to emit white light, but is not limited thereto. For example, the LED module 110 may be configured to emit color light such as red or blue. By using the LED module which is such a color light source, the lighting effect can be improved.

  In the above embodiment, the LED lamp 100 is an example of a halogen bulb-type LED lamp that replaces the halogen bulb. However, the present invention is not limited to this. The LED lamp 100 can also be applied to lamps other than halogen bulbs.

  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.

DESCRIPTION OF SYMBOLS 100 LED lamp 110 LED module 111 Base 112 LED element 120 Light guide member 121 Light guide part 121a Concave part 122 Plate-like part 123 1st main surface 124 2nd main surface 125 Side peripheral part 125a Large diameter part 125b Small diameter part 126 Step Portion 126a Contact surface 127 First plane 130 Front cover 131 Cover body portion 131a Tubular portion 131b First opening 131c Second opening 132 First opening 133 Second opening 134, 156 Protruding portion 134a Support surface 134b Inclined surface 135 Flange portion 135a First flange surface 135b Second flange surface 136 Second plane 137, 155 Locking portion 140 Support base 141 Flat plate portion 142, 151 Side wall portion 150, 250 Housing 151a First side wall portion 151b Second side wall portion 152, 252 Bottom part 153, 253 Connection part 154 Screwing hole 300 310 connecting member 311 arm portion 312, 313 threaded portion 320 body portion 330 cable

Claims (11)

A light emitting module;
A light guide member that is disposed on the light emission side of the light emitting module and includes a light guide unit that controls light distribution of the emitted light;
A cover member having an opening through which light emitted from the light emitting module and passed through the light guide portion is passed;
A housing fixed to the cover member and configured to cover the light emitting module together with the cover member;
The light source for illumination which is comprised so that the said cover member may surround the said light guide member, and hold | maintains the said light guide member so that the said light guide part and the said light emitting module may not contact | abut. A protrusion is formed on the inner surface of the cover member,
The illumination light source according to claim 1, wherein the cover member holds the light guide member by the protrusions engaging the light guide member. The light guide member further includes a plate-like plate-like portion having a main surface,
The light guide portion extends from the main surface toward the light emitting module,
The illumination light source according to claim 2, wherein the cover member holds the light guide member by the protrusions engaging the plate-like portion. The plate-like portion further has a contact surface that is a surface different from the main surface and contacts a part of the inner surface of the cover member;
The illumination light source according to claim 3, wherein the cover member holds the light guide member by sandwiching the plate-like portion between a part of the inner surface and the protrusion. The opening has an annular flange.
The abutment surface abuts on the flange portion,
The illumination light source according to claim 4, wherein the cover member holds the light guide member by sandwiching the plate-like portion between the flange portion and the projection portion. The plate-like portion has a side peripheral portion configured to surround the main surface,
The illumination light source according to claim 5, wherein the side peripheral portion includes a step portion having the contact surface. The plate-like portion is disk-shaped,
A part of the side surface of the plate-like portion is a first plane,
The illumination light source according to claim 3, wherein the cover member further includes a second plane that abuts on the first plane. The housing is a bottomed cylinder having a side wall and a bottom,
The light source for illumination according to claim 1, wherein the bottom portion includes a connection portion having a screw hole. The connecting portion is a cylindrical body protruding outward from the bottom portion,
The illumination light source according to claim 8, wherein the thickness of the connection portion increases as the thickness approaches the bottom portion. The illumination light source according to claim 8, wherein the connection portion is a cylindrical body that protrudes inward from the bottom portion. The illumination light source according to any one of claims 1 to 10, wherein the cover member includes a truncated cone-shaped cylindrical body that is integral with the opening and has an opening having a larger diameter than the opening of the opening. .

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