WO2014045523A1

WO2014045523A1 - Illuminating light source and illumination device

Info

Publication number: WO2014045523A1
Application number: PCT/JP2013/005025
Authority: WO
Inventors: 康一中村; 雅人松本; 高橋　健治
Original assignee: パナソニック株式会社
Priority date: 2012-09-24
Filing date: 2013-08-26
Publication date: 2014-03-27
Also published as: JPWO2014045523A1; CN204879985U

Abstract

Provided is a lamp (10) that is a straight tubular lamp having a cylindrically-shaped lamp housing and that comprises: an LED module (50) that is provided inside of the lamp housing and that comprises an LED (53) and a mounting substrate (52) having the LED (53) on the surface thereof; a translucent cover (20) that constitutes one portion of the lamp housing and that covers the surface of the mounting substrate (52); and a base (30) that constitutes another portion of the lamp housing and has the LED module (50) on the surface thereof. The translucent cover (20) is a notched cylindrical member comprising a main opening (21) that is notched along the lengthwise direction of one portion of a long cylinder. The base (30) holds the translucent cover (20) so as to block the main opening (21). One portion of the back surface of the base (30) constitutes the outer surface of the cylindrical structure of the lamp housing, another portion of the back surface of the base (30) is covered by the translucent cover (20), and another portion of the back surface of the base (30) has formed therein a groove (31) that holds the translucent cover (20).

Description

Lighting light source and lighting device

The present invention relates to an illumination light source and an illumination device, and, for example, to a straight tube type LED lamp using a light emitting diode (LED) and an illumination device including the same.

Since LEDs have high efficiency and long life, they are expected to be new light emitting elements in conventionally known light sources for illumination such as fluorescent lamps and incandescent lamps, and LEDs are used as illumination light sources (lamps) using LEDs. R & D on lamps is underway.

As an LED lamp, a straight tube type LED lamp (straight tube type LED lamp) replacing a straight tube fluorescent lamp having an electrode coil at both ends, or a bulb shape LED replacing a bulb fluorescent lamp or an incandescent lamp There is a lamp (bulb-shaped LED lamp) etc. For example, Patent Document 1 discloses a conventional straight tube LED lamp.

JP, 2009-43447, A

By the way, in the straight tube type LED lamp, an LED module including a mounting substrate and a plurality of LEDs mounted on the mounting substrate is used as a light source. And in the straight tube type LED lamp, a base for radiating the heat of the LED module, specifically the heat generated by the LED, is provided as a mounting base of the LED module. As a straight tube type LED lamp provided with such a base, there is a case where the base is installed in a cylindrical translucent cover (bulb) such as a glass tube, and an aperture is provided in the translucent cover to transmit light. There is a thing of the thing of the half split structure which makes a sex cover a half shape, and provides a base in the form which block | closes this opening. In the former straight tube type LED lamp, the casing (lamp case) of the straight tube type LED lamp is constituted only by the translucent cover, but in the latter straight tube type LED lamp, the base and the light transmission The lamp housing is constituted by two of the sexing covers. When the lamp casing is configured by the base, a part of the base can be exposed to the outside air, so that the heat dissipation efficiency of the LED module can be improved.

However, in the straight tube type LED lamp of the above-described half structure, since a part of the lamp housing is configured by the light shielding base such as a metal base, a portion of the lamp housing configured by the base Does not emit light from the LED module. Therefore, the straight tube type LED lamp of the half split structure has a problem that the light distribution angle is narrow.

Then, an object of the present invention is to provide an illumination light source and an illumination device having a wide light distribution angle in view of such problems.

In order to achieve the above object, it is an illumination light source having a cylindrical casing, and a light emitting module provided inside the casing and having a light emitting element and a substrate provided with the light emitting element on the surface And a translucent cover which constitutes a part of the housing and covers the surface of the substrate, and a base which constitutes the other part of the housing and is provided with the light emitting module on the surface. The translucent cover is a cutout cylindrical member having a main opening in which a part of a long cylinder is cut out in a longitudinal direction, and the base is configured to cover the main opening. The base, a part of the back of the base constitutes the outer surface of the cylindrical structure of the housing, and another part of the back of the base is covered with the light transmitting cover; A groove for holding the translucent cover is formed in another part of the back surface of the base. .

In one aspect of the illumination light source according to the present invention, the base may have a fin structure on part of the back surface.

In one aspect of the illumination light source according to the present invention, the groove may be formed of a fin that constitutes the fin structure.

Further, in one aspect of the illumination light source according to the present invention, the illumination light source further includes a base provided to close an opening of the end of the housing, and the groove fixes the base. It may be continuous with the screw hole.

In one aspect of the illumination light source according to the present invention, the translucent cover may be slidably held in the groove.

Further, in one aspect of the illumination light source according to the present invention, the circumferential end of the translucent cover may be fitted to the groove.

Further, in one aspect of the illumination light source according to the present invention, the end portion in the circumferential direction of the translucent cover protrudes below the substrate even when the translucent cover is viewed from the long direction. Good.

In one aspect of the illumination light source according to the present invention, the illumination light source has a long case, and is provided inside the long case, and a light emitting element and the light emitting element on the surface. A light emitting module having a provided substrate, a translucent cover which is a part of the elongated casing, which covers the surface of the substrate, and a surface which is another portion of the elongated casing The light emitting module is disposed, the base having a heat dissipation structure on the back surface, and a bottomed cylindrical cap for covering an end in the longitudinal direction of the elongated casing, the cap being the cap It is good also as having a venting structure for making outside air flow in into the above-mentioned heat dissipation structure via it.

Further, in one aspect of the illumination light source according to the present invention, the ventilation structure may be a ventilation port provided on a bottom surface of the mouthpiece.

Further, in one aspect of the illumination light source according to the present invention, the bottom surface of the base is configured by a first flat portion and a second flat portion including a plane whose normal direction is the longitudinal direction of the elongated case. And the first flat portion is provided with the vent disposed opposite to the side surface of the end portion of the base, and the second flat portion is connected to the external socket in a removable manner. And the first flat surface portion is retracted toward the longitudinal center of the long chassis in the longitudinal direction of the long chassis with respect to the second flat surface. It is also good.

Moreover, in one aspect of the illumination light source according to the present invention, the ventilation structure may be an opening in which a part of a cylindrical side surface of the mouthpiece is cut away.

In one aspect of the illumination light source according to the present invention, the heat dissipation structure may be a structure in which a plurality of heat dissipation fins extending in the longitudinal direction of the elongated casing are disposed adjacent to each other.

Further, in one aspect of the illumination light source according to the present invention, the ventilation structure is an uneven shape provided on a cylindrical side surface of the die corresponding to the uneven shape of the plurality of adjacent heat radiation fins. It is also good.

Further, a lighting device according to one aspect of the present invention includes the light source for illumination.

According to the present invention, it is possible to realize an illumination light source and an illumination device having a wide light distribution angle.

FIG. 1 is a perspective view of a lamp according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the lamp according to the first embodiment of the present invention. FIG. 3 is an enlarged perspective view of a part of the lamp according to the first embodiment of the present invention. FIG. 4 is a perspective view of the LED module according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view of a lamp according to a first embodiment of the present invention. FIG. 6 is a cross-sectional view of a lamp according to a modification of the first embodiment of the present invention. FIG. 7 is a perspective view showing the configuration of a straight tube type LED lamp according to a second embodiment of the present invention. FIG. 8 is an exploded perspective view of a straight tube type LED lamp according to a second embodiment of the present invention. FIG. 9 is a perspective view from the surface of an LED module and a base according to a second embodiment of the present invention. FIG. 10 is a front view and a side view of a mouthpiece main body according to a second embodiment of the present invention. FIG. 11A is an end perspective view of a straight tube LED lamp illustrating the function of the vent of the mouthpiece main body according to the second embodiment of the present invention. FIG. 11B is an end side view of a straight tube LED lamp illustrating the function of the vent of the mouthpiece main body according to the second embodiment of the present invention. FIG. 11C is a cross-sectional view of a long casing for explaining the function of the vent of the mouthpiece main body according to the second embodiment of the present invention. FIG. 12A is an end perspective view of a straight tube type LED lamp for explaining a ventilation structure of a mouthpiece main body according to a first modified example of the second embodiment of the present invention. FIG. 12B is a front view and a side view of a mouthpiece main body according to a first modified example of the second embodiment of the present invention. FIG. 13 is a perspective view of a lighting device according to a third embodiment of the present invention. FIG. 14A is a plan view of an LED module according to a modification of the first embodiment of the present invention. FIG. 14B is a cross-sectional view of an LED module according to a modification of the first embodiment of the present invention. FIG. 15A is a back view of a base showing a first modification of the heat dissipation structure of the straight tube LED lamp according to the second embodiment of the present invention. FIG. 15B is a rear view of a base showing a second modification of the heat dissipation structure of the straight tube LED lamp according to the second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below each show a preferable specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. The invention is specified by the claims. Therefore, among the components in the following embodiments, components not described in the independent claim showing the highest concept of the present invention are not necessarily required to achieve the object of the present invention, but are more preferable. It is described as constituting a form. Further, in the drawings, elements that represent substantially the same configuration, operation, and effect are denoted by the same reference numerals.

First Embodiment
First, a lamp 10 as a light source for illumination according to a first embodiment of the present invention will be described using FIGS. 1 to 3. FIG.

FIG. 1 is a perspective view showing the configuration of a lamp 10 according to the present embodiment. 2 is an exploded perspective view of the lamp 10 with the base 60 removed, and FIG. 3 is a portion of the lamp 10 with the base 60 removed (the end of the lamp 10 in the tube axial direction) Part) is an enlarged perspective view.

The lamp 10, as shown in FIGS. 1 to 3, is a long straight-tube LED lamp used as an alternative illumination of a conventional straight-tube fluorescent lamp (straight-tube fluorescent lamp). A cover 20, a base 30, an LED module 50, a base 60, and a lighting circuit (not shown) are provided. In the lamp 10, the base 30 and the light transmitting cover 20 constitute a long and cylindrical lamp housing (enclosure).

[Transparent cover]
The translucent cover 20 is a long cover member that constitutes the outer surface of the lamp housing, and protects the members provided on the base 30, that is, the LED module 50, the lighting circuit, and the like. The translucent cover 20 is a cutout cylindrical member having a main opening 21 formed by cutting out a part of a long cylinder along its long direction (direction parallel to the tube axis direction), for example, a substantially semi-cylindrical member Composed of shaped members. The inner surface and the outer surface of the translucent cover 20 have a shape in which a part of a true circle is cut away when viewed in the long direction. The main opening 21 is continuously formed in a range smaller than 180 ° centering on the central axis of the translucent cover 20 when viewed in the long direction. Therefore, the translucent cover 20 is continuously formed in a range of 180 ° or more centering on the central axis of the translucent cover 20 when viewed in the long direction. The inner surface and the outer surface of the translucent cover 20 may have a shape in which a part of an ellipse is cut off when viewed in the long direction.

The translucent cover 20 is made of a material that transmits the light emitted by the LED module 50 to the outside of the lamp. The translucent cover 20 is made of, for example, a transparent resin material or glass made of acrylic or the like, and can be formed by resin molding a desired transparent resin material.

The translucent cover 20 is, for example, a straight pipe (glass pipe) made of soda lime glass of 70 to 72 [%] of silica (SiO ₂ ), or a straight pipe (plastic) made of a resin material such as polycarbonate Tube) can be used.

[Base]
The base 30 is a long rectangular plate-like support base for holding (supporting) the LED module 50, and is configured to close the main opening 21 of the light-transmissive cover 20 so as to cover the light-transmissive cover 20. Integrated with When viewed from the longitudinal direction (direction parallel to the tube axis direction), the base 30 is transparent so that its surface is located between the central axis (circular axis) of the translucent cover 20 and the main opening 21. It is integrated with the light cover 20. The base 30 has substantially the same length as the entire length of the translucent cover 20 in the longitudinal direction. The translucent cover 20 may be fixed to the base 30 by an adhesive or the like.

In the present specification, the longitudinal direction of the base 30 refers to a direction parallel to the long side of the surface of the base 30 in plan view, and the short direction of the base 30 refers to the direction of the base 30. It points in a direction parallel to the short side when the surface is viewed in plan. In addition, a plane between the central axis of the translucent cover 20 and the main opening 21 passes the central axis of the translucent cover 20 and is parallel to the surface of the base 30. It points between the main opening 21 and a plane parallel to the main opening 21.

In the base 30, one surface (surface) is a mounting surface for mounting the LED module 50, and is covered with the light transmitting cover 20. Then, a part of the other surface (back surface, outer peripheral surface) of the base 30 is exposed to the outside of the lamp, and constitutes the outer surface of the lamp housing. On the other hand, the other part of the other surface (rear surface, outer peripheral surface) of the base 30 is covered with the translucent cover 20 and is not exposed to the outside of the lamp. The front and back surfaces of the base 30 are rectangular when viewed in plan.

The base 30 also functions as a heat sink (heat sink) for radiating the heat generated in the LED module 50. Therefore, the base 30 is preferably made of a high thermal conductivity material such as metal, and a long aluminum substrate made of aluminum can be used as the base 30. The base 30 may be made of resin.

The base 30 has a fin structure for improving the function as a heat radiating body, and on the back surface thereof, a plurality of fins 30a extending in the longitudinal direction are formed side by side in the lateral direction. When the base 30 is viewed in the longitudinal direction, the fins 30a are formed in a convex shape protruding in a direction away from the lamp tube axis (the central axis of the light transmitting cover 20) (outwardly of the lamp). When the base 30 is viewed in the longitudinal direction, the curvature of the arc formed by connecting the apexes of the plurality of fins 30 a substantially matches the curvature of the curvature of the outer surface of the translucent cover 20. Therefore, when the base 30 is viewed in the longitudinal direction, a perfect circle is formed by connecting the outer surface of the translucent cover 20 and the apexes of the plurality of fins 30 a. Thus, the openings of both ends (both ends in the tube axis direction) of the cylindrical member formed by integrating the translucent cover 20 and the base 30 with the cylindrical base 60 having a perfect circular opening. Can be capped.

In the base 30, a plurality of fins 30a extending not in the longitudinal direction but in the lateral direction may be formed along the longitudinal direction instead of the lateral direction.

A groove (slide rail) 31 extending in the longitudinal direction of the base 30 is formed on the back surface of the base 30 so as to sandwich the plurality of fins 30 a in the lateral direction of the base 30. The translucent cover 20 is slidably attached to the base 30 by inserting the circumferential end 22 into the groove 31. Therefore, the translucent cover 20 covers not only the surface of the base 30 but also a part of the back surface of the base 30.

When the base 30 is viewed from the longitudinal direction of the base 30, the base 30 has a tapered shape in which the width gradually narrows away from the lamp tube axis, and a part of the back surface of the base 30 is covered by the translucent cover 20. It is Therefore, when the base 30 is viewed from the longitudinal direction, both end portions 22 in the circumferential direction of the translucent cover 20 protrude downward of the mounting substrate of the LED module 50 so as to sandwich the base 30. .

The end portion 22 of the translucent cover 20 in the circumferential direction is attached to the groove 31 of the base 30 in a slidable state. However, a convex portion extending in the longitudinal direction of the translucent cover 20 may be provided on the inner surface of the translucent cover 20, and the convex portion may be slidably attached to the groove 31 of the base 30.

The groove 31 of the base 30 and the end 22 of the translucent cover 20 are configured such that the end 22 is fitted into the groove 31 as a claw. Such a configuration is configured such that the end 22 is bent in an L shape toward the back surface of the base 30 when the translucent cover 20 is viewed in the long direction, and the groove 31 is the end 22 It can be realized by being configured to engage.

At both end surfaces of the base 30 in the longitudinal direction, screw holes (tapping screw lower holes) 32 for screwing the base 60 to the base 30 are formed. The screw holes 32 are formed integrally with the grooves 31 simultaneously by drawing. Therefore, the screw hole 32 is continuous with the groove 31 and extends continuously in the longitudinal direction of the base 30. The continuous screw holes 32 and the grooves 31 are formed by the outermost fins 30 a of the fins 30 a aligned in the lateral direction, and are located below the substrate of the LED module 50 when the base 30 is viewed in the longitudinal direction. .

[LED module]
The plurality of LED modules 50 are light sources of the lamp 10 and are mounted side by side in the longitudinal direction of the base 30 on the surface of the base 30 so as to be covered by the translucent cover 20. The surface of the LED module 50 and the LED on the LED module 50 have a central axis (circular axis) of the translucent cover 20 and the main opening 21 of the translucent cover 20 when the translucent cover 20 is viewed from the long direction. Located in between. In other words, when the translucent cover 20 is viewed from the longitudinal direction, the height from the main opening 21 inside the translucent cover 20 is 0 or more when the translucent cover 20 is viewed from the longitudinal direction Also, the height is smaller than the height of the central axis of the translucent cover 20. At this time, the height from the main opening 21 is the distance from the main opening 21 (surface of the mounting substrate of the LED module 50) in the normal direction of the plane including the main opening 21 (the surface of the mounting substrate of the LED module 50). is there. Each of the plurality of LED modules 50 is fixed to the base 30 by an adhesive, a screw or the like. The detailed configuration of the LED module 50 will be described later.

The surface of the LED module 50 and the LEDs on the LED module 50 are located not in the lower half of the circular translucent cover 20 but in the upper half when the translucent cover 20 is viewed from the long direction, Instead of the main opening 21 of the light transmitting cover 20, the light transmitting cover 20 may be integrated with the light transmitting cover 20 so as to be located between the light transmitting cover 20 and the center of the light transmitting cover 20. That is, when the translucent cover 20 is viewed from the longitudinal direction, the height from the main opening 21 in the translucent cover 20 of the surface of the LED module 50 and the LED thereon is It may be higher than the height of the central axis and lower than the translucent cover 20.

Further, the fixing method of the LED module 50 to the base 30 may be fixing by means of claws, slide grooves, rivets, caulking or the like, in addition to fixing using an adhesive or a screw. For example, a tab, a rivet, a caulking, or the like may be provided on the base 30 to press the LED module 50 against the mounting surface of the base 30, or a slide groove for slidably holding the LED module 50 on the base 30 is used. It may be provided on the platform 30.

[Cap]
The pair of caps 60 have a substantially bottomed cylindrical shape, and form the outer surface of the lamp housing, and both ends of the integrated translucent cover 20 and the base 30 (both ends in the tube axial direction Section). And a pair of nozzle | cap | die 60 is covering the opening of the both ends of the cylindrical member (lamp housing | casing) formed by integrating the translucent cover 20 and the base 30. FIG. The base 60 on one side of the cylindrical member is provided with a pair of power reception pins 61, and the base 60 on the other side is provided with an earth pin 62.

The pair of power receiving pins 61 is a conductive pin made of a rod-like metal material. The pair of power receiving pins 61 is configured to be attached to the lighting device, and receives power for lighting the LEDs of the LED module 50 from a power supply device (lighting device) outside the lamp. DC power is supplied to the lighting circuit in the lamp through the pair of power receiving pins 61. The lighting circuit rectifies the input DC power and outputs a desired voltage for energizing the LED 53.

The earth pin 62 is a conductive pin made of a rod-like metal material. Similarly to the power receiving pin 61, the earth pin 62 is configured to be attached to the lighting apparatus. Therefore, if the connection portion (connection portion in the socket) with the ground pin 62 in the lighting apparatus is a ground terminal, the grounding pin 62 is at the ground potential when the lamp 10 is mounted on the lighting apparatus.

In the case where the lamp 10 is attached to the existing fluorescent lamp, the lamp and the ground pin 62 are not connected to ground, and the ground pin 62 is a mounting for attaching the lamp 10 to the lamp. Act as a pin. Therefore, the ground pin 62 does not have to be made of metal. Further, the number of earth pins 62 is not limited to one, and may be two.

As described above, the lamp 10 adopts the one-side power feeding system, and the power for lighting the LED module 50 is fed from the pair of power receiving pins 61 provided only at one end of the lamp 10 Is configured.

Next, the configuration of the LED module 50 will be described with reference to FIG.

FIG. 4 is a perspective view showing the configuration of the LED module 50. As shown in FIG.

As shown in FIG. 4, the LED module 50 is a surface mount device (SMD) light emitting module, and is a linear light source that emits light in a linear manner. The LED module 50 includes a mounting substrate 52, a plurality of LED elements 58 mounted in a line on the mounting substrate 52, wires 54, and electrode terminals 56.

The mounting substrate 52 is an LED mounting substrate for mounting the LED element 58, at least the surface of which is made of an insulating material, and is, for example, a long rectangular substrate. The mounting substrate 52 is made of, for example, a glass composite substrate (CEM-3 or the like), a glass epoxy substrate (FR-4 or the like), a substrate (FR-1 or the like) made of paper phenol or paper epoxy, or polyimide or the like. Flexible substrate can be used. As the metal base substrate, for example, an aluminum alloy substrate, an iron alloy substrate, a copper alloy substrate, or the like having an insulating film formed on the surface can be used. The top and bottom surfaces of the mounting substrate 52 are rectangular when viewed in plan.

The mounting substrate 52 is disposed on the surface of the base 30 such that the longitudinal direction is parallel to the longitudinal direction of the base 30, and the short direction orthogonal to the longitudinal direction is parallel to the short direction of the base 30. It will be set up. The substantially entire rear surface of the mounting substrate 52 is in contact with the front surface of the base 30.

In this specification, the longitudinal direction of the mounting substrate 52 refers to a direction parallel to the long side when the surface of the mounting substrate 52 is viewed in plan, and the short direction of the mounting substrate 52 is the direction of the mounting substrate 52. It points in a direction parallel to the short side when the surface is viewed in plan.

Assuming that the length of the long side of the mounting substrate 52 is L1 (mm) and the length of the short side is L2 (mm), the thickness of the mounting substrate 52 is, for example, 1.0 (L1 = 580 mm, L2 = 16 mm). mm) substrates can be used.

The plurality of LED elements 58 are directly mounted on the surface of the mounting substrate 52. The plurality of LED elements 58 are arranged in a line (in a straight line) in a line along the longitudinal direction of the mounting substrate 52.

The LED element 58 is a so-called SMD type light emitting element in which an LED chip and a phosphor are packaged, and is, for example, a white LED element that emits white light. The LED element 58 includes a package (cavity) 59, an LED 53 mounted on the bottom of a recess of the package 59, a sealing member 51 which is a phosphor-containing resin that fills the recess of the package 59 and seals the LED 53; Wiring and the like.

The package 59 is a container molded of non-light transmitting resin (white resin or the like), and includes a recess (cavity) having an inverted truncated cone shape. The inner side surface of the recess is an inclined surface, and is configured to reflect the light from the LED 53 upward.

Each of the LEDs 53 is an example of a light emitting element, and is a bare chip that emits monochromatic visible light, and is die-bonding mounted on the bottom surface of the recess of the package 59 by a die attach material (die bond material). As LED53, the blue light emission LED chip which light-emits blue light can be used, for example. As the blue light emitting LED chip, for example, a gallium nitride based semiconductor light emitting element having a center wavelength of 440 nm to 470 nm, which is made of an InGaN based material, can be used.

The sealing member 51 is a phosphor-containing resin containing a phosphor which is a light wavelength converter, and converts the wavelength of light from the LED 53 and seals the LED 53 to protect the LED 53. The sealing member 51 is filled in the recess of the package 59 and sealed up to the opening surface of the recess.

As the sealing member 51, for example, when the LED 53 is a blue LED, it is possible to use a phosphor-containing resin in which yellow phosphor particles of YAG (yttrium aluminum garnet) type are dispersed in a silicone resin. In this case, since the yellow phosphor particles are excited by the blue light of the blue LED to emit yellow light, white light is emitted from the sealing member 51 by the excited yellow light and the blue light of the blue LED. . The sealing member 51 may also contain a light diffusing material such as silica.

The wiring 54 is a metal wiring made of tungsten (W) or copper (Cu) or the like, and the surface is exposed to electrically connect the plurality of LED elements 58 with each other and electrically connect the LED elements 58 and the electrode terminals 56. It is patterned in a predetermined shape for connection.

The electrode terminal 56 is a power supply / reception unit (external connection terminal) that receives DC power from the outside and supplies DC power to the LED 53, and the surface is exposed and is electrically connected to the wiring 54. The direct current voltage received by the electrode terminal 56 is supplied to the LED 53, whereby the LED 53 emits light, and the LED 53 emits desired light.

In the LED modules 50 adjacent to each other, the electrode terminals 56 are electrically connected by connection wiring (not shown). Thereby, a plurality of LED modules 50 (LEDs 53) are connected in series. The connection wiring that connects the electrode terminals 56 to each other can be made of, for example, a conductive member such as a lead wire made of a conductive wire coated with an insulating film.

In the manufacture of the lamp 10 having the above configuration, first, a plurality of LED modules 50, lighting circuits, and the like are mounted on the surface of the base 30, and electrical connection is performed. Thereafter, both the end portions 22 in the circumferential direction of the translucent cover 20 are inserted into and hooked in the grooves 31 at both end portions in the short direction of the base 30, and then the translucent cover 20 is The translucent cover 20 is attached to the base 30 by sliding in the direction of the tube axis. And the nozzle | cap | die 60 is attached to the both ends of the pipe axis direction of the base 30 and the translucent cover 20 which were integrated. The translucent cover 20 may be fitted on the base 30 so as to be pushed from above the base 30 without sliding.

As described above, the lamp 10 of the present embodiment is a straight tube type lamp having a cylindrical lamp housing, and is provided inside the lamp housing, and the mounting board on which the LED 53 and the LED 53 are provided on the surface And an LED module 50 having Then, the lamp 10 further constitutes a part of the lamp housing, and the translucent cover 20 covering the surface of the mounting substrate 52 and the other part of the lamp housing, and the LED module 50 is provided on the surface. And a base 30 provided. The translucent cover 20 is a cutout cylindrical member having a main opening 21 in which a part of a long cylinder is cut out in the longitudinal direction, and the base 30 is transparent to close the main opening 21. The light cover 20 is held. Then, a part of the back surface of the base 30 constitutes the outer surface of the cylindrical structure of the lamp housing, and another part of the back surface of the base 30 is covered with the translucent cover 20, and the back surface of the base 30 A groove 31 for holding the translucent cover 20 is formed in the other part of the.

With such a configuration, as shown in (b) of FIG. 5, the groove 31 for holding the translucent cover 20 is provided on the back surface of the base 30, so a part of the translucent cover 20 (FIG. Part E) covers a part of the back surface of the base 30. Therefore, part of the light of the LED 53 that has entered the translucent cover 20 on the front surface side of the mounting substrate 52, that is, the region B above the LED 53, is guided through the translucent cover 20 to the back surface side of the mounting substrate 52 The light is also emitted from the translucent cover 20 in the area C below the LED 53. On the other hand, as shown in FIG. 5A, when the groove 31 for holding the translucent cover 20 is provided on the surface of the base 30, the light of the LED 53 is emitted from the back surface side of the mounting substrate 52. I will not. As a result, a light distribution angle D wider than the light distribution angle A of FIG. 5A can be realized by the configuration of FIG. 5B according to the present embodiment. In addition, FIG. 5 is sectional drawing in the plane orthogonal to the tube axis of the lamp | ramp in the state except a sealing member.

Moreover, since a part (part F of FIG. 5) of the base 30 is exposed to the outer surface as a part of the lamp housing, the heat of the LED module 50 is efficiently dissipated to the outside of the lamp through the base 30. Can.

Moreover, in the lamp | ramp 10 of this embodiment, the base 30 has a fin structure in the back surface.

With such a configuration, the heat of the LED module 50 can be dissipated to the outside of the lamp with high efficiency through the base 30.

Moreover, in the lamp | ramp 10 of this embodiment, the groove | channel 31 is formed of the fin 30a which comprises a fin structure.

With such a configuration, the screw holes 32 and the grooves 31 can be formed on the back surface of the base 30 using the fins 30a of the fin structure, so the base 30 can be miniaturized and the light distribution angle can be further expanded. be able to.

Further, the lamp 10 of the present embodiment further includes a base 60 provided so as to close the opening of the end portion of the lamp housing, and the groove 31 is continuous with a screw hole for fixing the base 60.

With such a configuration, the groove 31 can be formed integrally with the screw hole 32 using the groove for forming the screw hole 32 as the groove 31 for holding the light-transmissive cover 20. The groove 31 for holding the light cover 20 can be easily formed. Further, since it is not necessary to separately provide the screw holes 32 and the grooves 31 on the back surface of the base 30, the base 30 can be miniaturized and the light distribution angle can be further expanded. In addition, even if the base 30 is miniaturized as in the prior art, the number of fins 30 a and the surface area can be increased as much as the screw holes 32 and the grooves 31 are integrated. The heat of the heat can be dissipated to the outside of the lamp more efficiently.

Further, in the lamp 10 of the present embodiment, the translucent cover 20 is slidably held in the groove 31.

Further, in the lamp 10 of the present embodiment, the circumferential end of the translucent cover 20 is fitted with the groove 31. The circumferential end of the light transmitting cover 20 protrudes below the mounting substrate 52 when the light transmitting cover 20 is viewed in the longitudinal direction.

With such a configuration, the light-transmissive cover 20 can be easily attached to the base 30, so that the manufacture of the lamp 10 can be facilitated.

In the lamp 10 of the present embodiment, the groove 31 held by the end portion 22 in the circumferential direction of the light-transmissive cover 20 in the groove 31 is continuous with the screw hole 32, but as shown in FIG. The grooves that are continuous with 32 may be other grooves. The groove 31 may be formed so as to sandwich both the screw hole 32 and the plurality of fins 30a in the short direction of the base 30, as shown in FIG. 6, or to sandwich only the plurality of fins 30a. , Or may be formed so as to be sandwiched by the screw holes 32. FIG. 6 is a cross-sectional view in a plane orthogonal to the tube axis of the lamp in a state where the sealing member of the lamp 10 according to the present modification of the present embodiment is removed.

Second Embodiment
In the fin structure of the base 30 of the lamp 10 according to the first embodiment, generally, the fin shape runs in the longitudinal direction, there is no space into which the air necessary for cooling the fin enters, and convection is less likely to occur. And efficient exhaust heat may not be possible.

The present embodiment provides the structure of a straight tube type LED lamp having the configuration of the LED lamp according to the first embodiment and further having excellent heat dissipation. Hereinafter, the description of the configuration representing the features of the lamp 10 according to the first embodiment will be omitted, and the description will be given focusing on the features added to the lamp 10 according to the first embodiment.

First, the straight tube LED lamp 201 according to the present embodiment will be described.

[Whole composition of the lamp]
First, the configuration of the straight tube type LED lamp 201 according to the present embodiment will be described using FIGS. 7 to 10. FIG.

FIG. 7 is a perspective view showing the configuration of a straight tube type LED lamp according to a second embodiment of the present invention. 8 is an exploded perspective view of a straight tube type LED lamp according to a second embodiment of the present invention, and FIG. 3 is a view from the surface of the LED module and the base according to the second embodiment of the present invention FIG. 4 is a front view and a side view of a die according to a second embodiment of the present invention.

The straight tube type LED lamp 201 is a long straight tube type lamp used as an alternative illumination of a conventional straight tube fluorescent lamp (straight tube fluorescent lamp) as shown in FIGS. 7 and 8. The light transmitting cover 220, the base 230, the LED module 210, the

caps

240 and 250, and the lighting circuit (not shown). In the straight tube type LED lamp 201, the base 230, the

caps

240 and 250, and the light transmitting cover 220 constitute a long and cylindrical lamp housing (envelope). That is, by connecting the translucent cover 220 and the base 230, a tubular casing having openings at both ends is formed as an outer shell member (insertion pipe). A pair of

caps

240 and 250 are provided at both ends in the longitudinal direction (Y-axis direction) of the housing, and the LED module 210 and the like are accommodated in the housing. The straight tube LED lamp 201 is supported by the light fixture by attaching the

base

240 and 250 to the socket of the light fixture. The structure of the

caps

240 and 250, which is an essential part of the present invention, will be described later.

Although not shown, a connector for passing the power supplied to the LED module 210 and a lighting circuit for causing the LED module 210 to emit light are provided in the housing. Moreover, the straight tube | pipe type LED lamp 201 in this Embodiment employ | adopts the one-side electric power feeding system which electrically feeds with respect to the LED module 210 only from the nozzle | cap | die 240. FIG. That is, the straight tube LED lamp 201 receives power from a lighting fixture or the like only from the base 240.

Hereinafter, each component of the straight tube LED lamp 201 will be described in detail.

[Transparent cover]
The translucent cover 220 is an elongated cover member that constitutes the outer surface of the lamp housing, and protects the members provided on the base 230, that is, the LED module 210, the lighting circuit, and the like. The translucent cover 220 is formed of a cutout cylindrical member having a main opening 221 formed by cutting out a part of an elongated cylinder along the longitudinal direction (tube axis direction), for example, a substantially semi-cylindrical member Be done.

The translucent cover 220 is made of a material that transmits the light emitted from the LED module 210 to the outside of the lamp. The translucent cover 220 is made of, for example, a transparent resin material or glass made of acrylic or the like, and can be formed by resin molding a desired transparent resin material.

The translucent cover 220 is, for example, a straight pipe (glass pipe) made of soda lime glass of 70 to 72 [%] of silica (SiO ₂ ), or a straight pipe (plastic) made of a resin material such as polycarbonate Tube) can be used.

In addition, the translucent cover 220 may be provided with the light-diffusion part which has a light-diffusion function for diffusing the light from the LED module 210. FIG. Thereby, the light emitted from the LED module 210 can be diffused when passing through the translucent cover 220. Examples of the light diffusion portion include a light diffusion sheet or a light diffusion film formed on at least one of the inner surface and the outer surface of the translucent cover 220. Specifically, a milky white light diffusing film formed by adhering a resin or a white pigment containing a light diffusing material (fine particles) such as silica or calcium carbonate to at least one of the inner surface and the outer surface of the light transmitting cover 220 There is. As another light diffusion portion, a lens structure provided at least either inside or outside of the translucent cover 220, or a recess or a convex formed on at least one of the inner surface and the outer surface of the translucent cover 220 There is a department. For example, by printing a dot pattern on at least one of the inner surface and the outer surface of the translucent cover 220 or processing a part of the translucent cover 220, a light diffusing function (light It is also possible to have a diffusion section). In addition, the translucent cover 220 can be provided with a light diffusing function (a light diffusing portion) by molding the translucent cover 220 itself using a resin material or the like in which a light diffusing material is dispersed.

[Base]
As shown in FIGS. 7 and 8, the base 230 is a support base for holding (supporting) the LED module 210, and the base 230 is translucent so as to close the main opening 221 of the translucent cover 220. It is integrated with the cover 220. The inner portion of the base 230 on the translucent cover 220 side is a plate-like mounting portion 231 on which the LED module 210 is mounted. In the present embodiment, the mounting surface of the mounting portion 231, which is the surface of the base 230, is a long rectangular plane.

Moreover, the base 230 functions as a heat sink which radiates the heat generated by the LED module 210. Therefore, the rear surface of the base 230 is exposed to the outside of the straight tube type LED lamp 201. Specifically, a plurality of heat dissipating fins 232 are provided as a heat dissipating portion on an outer portion which is a back surface of the mounting surface of the base 230. The heat dissipating fins 232 are exposed to the outside of the straight tube LED lamp 201, and are provided so as to project outward from the mounting portion 231. A plurality of heat radiation fins 232 are arranged in parallel along the longitudinal direction (Y-axis direction) of the base 230. In the present specification, the longitudinal direction of the base 230 refers to a direction parallel to the long side of the surface of the base 230 in plan view, and the short direction of the base 230 refers to the direction of the base 230. It points in a direction parallel to the short side when the surface is viewed in plan.

Further, at both end portions in the short direction of the base 230, stepped portions are provided with which the edge portions on both sides in the circumferential direction of the translucent cover 220 are engaged. The translucent cover 220 and the base 230 can be engaged by sliding the translucent cover 220 on the base 230 in the longitudinal direction or fitting the translucent cover 220 from above the base 230.

The base 230 is preferably made of a high thermal conductivity material such as metal, and in the present embodiment, it is an extruded material made of aluminum. The base 230 may be made of resin. In this case, it is preferable to use a resin material having a high thermal conductivity.

The translucent cover 220 and the base 230 may be bonded by an adhesive if necessary.

[LED module]
The LED module 210 is a light source of the straight tube type LED lamp 201, and is fixed to the mounting portion 231 on the surface of the base 230 so as to be covered by the light transmitting cover 220. There are various fixing methods to the mounting portion 231, such as claws, slides, silicon, rivets, and caulking, as well as fixing with an adhesive or a screw.

The LED module 210 is a surface mount device (SMD) type light emitting module as shown in FIG. 9, and is a linear light source that emits light in a linear manner. The LED module 210 includes a mounting substrate 272, a plurality of LED elements 278 mounted in a line on the mounting substrate 272, wires 274, and electrode terminals 276. That is, the LED module 210 is provided in the inside of the long case formed of the light transmitting cover 220 and the base 230, and the LED element 278 which is a light emitting element and the mounting in which the LED element 278 is provided on the surface A light emitting module having a substrate 272.

The mounting substrate 272 is an LED mounting substrate for mounting the LED element 278, at least the surface of which is made of an insulating material, and is, for example, a long rectangular substrate. As the mounting substrate 272, for example, a flexible substrate having flexibility such as a glass epoxy substrate (CEM-3, FR-4, etc.), a substrate made of paper phenol or paper epoxy (FR-1, etc.), polyimide, etc. Or, a metal base substrate can be used. As the metal base substrate, for example, an aluminum alloy substrate, an iron alloy substrate, a copper alloy substrate, or the like having an insulating film formed on the surface can be used. The front surface and the back surface of the mounting substrate 272 are rectangular when viewed in plan.

In the mounting substrate 272, the longitudinal direction (Y-axis direction) is parallel to the longitudinal direction of the base 230, and the lateral direction (X-axis direction) orthogonal to the longitudinal direction is parallel to the lateral direction of the base 230 Thus, it is disposed on the surface of the base 230.

Each of the plurality of LED elements 278 is an example of a light emitting element, and is directly mounted on the surface of the mounting substrate 272. The plurality of LED elements 278 are arranged in a line (in a straight line) along the longitudinal direction of the mounting substrate 272.

The LED element 278 is a so-called SMD type light emitting element in which an LED chip and a phosphor are packaged, and is, for example, a white LED element that emits white light. The LED element 278 includes a package, an LED mounted on the bottom surface of the concave portion of the package, a sealing member which is a phosphor-containing resin that is filled in the concave portion of the package and seals the LED, metal wiring and the like. .

The package is a container molded of a non-light-transmitting resin (white resin or the like), and includes an inverted truncated cone-shaped recess (cavity). The inner surface of the recess is an inclined surface and is configured to reflect light from the LED upward. The package may be translucent, and light may be emitted widely from the side of the package.

Each LED is an example of a light emitting element, and is a bare chip that emits monochromatic visible light, and is die-bonded and mounted on a mounting substrate 272 at the bottom of the recess of the package by a die attach material (die bond material). As each LED, for example, a blue light emitting LED chip that emits blue light can be used. As the blue light emitting LED chip, for example, a gallium nitride based semiconductor light emitting element having a center wavelength of 440 nm to 470 nm, which is made of an InGaN based material, can be used.

In the plurality of LEDs, a p-side electrode and an n-side electrode for supplying current are formed on the top surface of the chip, and the p-side electrode and the n-side electrode are wire-bonded to the wiring 274, respectively.

The sealing member is a phosphor-containing resin containing a phosphor that is a light wavelength converter, and converts the wavelength of light from the LEDs and collectively seals all the LEDs on the mounting substrate 272 to protect the LEDs Do. The sealing member is filled in the recess of the package and sealed up to the opening surface of the recess. As the sealing member, for example, when the LED is a blue LED, it is possible to use a phosphor-containing resin in which yellow phosphor particles of YAG (yttrium aluminum garnet) type are dispersed in a silicone resin. In this case, since the yellow phosphor particles are excited by the blue light of the blue LED to emit yellow light, white light is emitted from the sealing member by the excited yellow light and the blue light of the blue LED. The sealing member may also contain a light diffusing material such as silica.

The wire 274 is a metal wire made of tungsten (W) or copper (Cu) or the like, and the surface is exposed to electrically connect the plurality of LED elements 278 with each other and electrically connect the LED element 278 and the electrode terminal 276. It is patterned in a predetermined shape for connection.

The electrode terminal 276 is a power supply / reception unit (external connection terminal) that receives DC power from the outside and supplies DC power to the LED. The surface of the electrode terminal 276 is exposed and is electrically connected to the wiring 274. The direct current voltage received by the electrode terminal 276 is supplied to the LED so that the LED emits light and the desired light is emitted from the LED. The two electrode terminals 276 are offset to one long side of the mounting substrate 272 with reference to the sealing member.

The number of the LED modules 210 mounted on the base 230 may be one or more. When a plurality of LED modules 210 are used, the LED modules 210 are aligned in the longitudinal direction of the base 230.

[Cap]
The base 240 is a power supply base for supplying power to the LED elements of the LED module 210. The cap 240 is also a cap for receiving power for receiving power from the external power supply of the straight tube LED lamp 201 for lighting the LED elements of the LED module 210.

As shown in FIGS. 7 and 8, the base 240 has a bottomed cylindrical shape that covers one of the ends in the longitudinal direction of the elongated casing formed of the translucent cover 220 and the base 230. It has become. The base 240 in the present embodiment is composed of a base main body 241 made of synthetic resin such as polybutylene terephthalate (PBT) and a feed pin 242 which is a pair of power receiving connection terminals made of a metal material such as brass. The pair of feed pins 242 are configured to protrude outward from the bottom of the base body 241. The power supply pin 242 is a pin that supplies power to light the LED element, and functions as a power reception pin that receives predetermined power from an external device such as a lighting fixture. For example, by attaching the base 240 to the socket of the lighting apparatus, the pair of power supply pins 242 receive power from the power supply device incorporated in the lighting apparatus. The feed pin 242 also functions as a connection terminal for detachably attaching to the socket of the lighting fixture.

The base 250 is a non-power supply base. That is, the base 250 has a function of attaching the straight tube type LED lamp 201 to a lighting fixture.

As shown in FIG. 7 and FIG. 8, the base 250 has a bottomed cylindrical shape that covers the other end of the long casing in the longitudinal direction, which includes the light transmitting cover 220 and the base 230. It has become. The base 250 in the present embodiment is composed of a base main body 251 made of a synthetic resin such as PBT and a single non-feed pin 252 made of a metal material such as brass. The non-feed pin 252 is configured to protrude outward from the bottom of the base body 251.

The base 250 may have a grounding function. In this case, the non-feed pin 252 functions as an earth pin, and the non-feed pin 252 and the base 230 are connected to ground, whereby the base 230 is grounded via the luminaire.

As described above, the straight tube type LED lamp 201 adopts the one-side power feeding method, and the power for lighting the LED module 210 is a pair of power provided at only one end of the straight tube type LED lamp 201. Power is supplied from the feed pin 242.

As shown in FIG. 10, the base body 241 has a cylindrical shape with a bottom, and in addition to the connection portion 245 for fixing the feed pin 242 in a protruding manner and the screw hole 244 for fixing the base 240 to the base 230, A vent 243 is provided in a plane whose normal direction is the longitudinal direction of the elongated case. With this configuration, the vent 243 has a venting structure for allowing the outside air to flow into the radiation fin 232 provided on the back surface of the base 230 via the base 240. Further, the surface provided with the vent hole 243 and the screw hole 244 is retracted in the positive direction of the Y axis with respect to the surface provided with the connection portion 245. That is, the bottom surface of the base 240 is configured by the first flat portion and the second flat portion including a plane whose normal direction is the longitudinal direction of the elongated casing formed of the light transmitting cover 220 and the base 230. Be done. The first flat surface portion is a surface provided with the screw holes 244 and the vent holes 243, and the second flat surface portion is a surface provided with the connection portion 245. The first flat portion is provided with a vent 243 disposed opposite to the end side surface of the base 230, and the second flat portion is provided with a feed pin 242 detachably connected to the external socket. ing. The second flat portion is retracted toward the center of the elongated case in the longitudinal direction of the elongated case with respect to the first flat portion.

In addition, although the front view and side view of the nozzle | cap | die main body 251 are abbreviate | omitted, compared with the structure of the nozzle | cap | die main body 241, only the structures of the connection part which carries out non-feed pin 252 is fixed. Therefore, the vent 253 provided in the mouthpiece main body 251 has the same function as the vent 243 described below. Hereinafter, the function of the vent 243 will be described in detail.

FIG. 11A is an end perspective view of a straight tube type LED lamp explaining the function of the vent of the mouthpiece main body according to the second embodiment of the present invention, and FIG. 11B is a sectional view of the second embodiment of the present invention. FIG. 11C is an end side view of the straight tube type LED lamp for explaining the function of the vent of the mouthpiece main body, and FIG. 11C is an elongated view for explaining the function of the vent of the mouthpiece main body according to the second embodiment of the present invention. Fig. 6 is a cross-sectional view of the case-like housing.

The heat generated by the LED module 210 is dissipated to the outside through the heat dissipating fins 232 provided on the back surface of the base 230. However, in the structure in which the vents 243 are not provided, in particular, between the heat dissipating fins 232. There is a problem that efficient exhaust heat can not be generated because air convection for releasing the hot air staying in the air to the outside hardly occurs.

On the other hand, in the case of the straight tube type LED lamp 201 having the air vent 243 according to the present embodiment, as shown in FIGS. 11A to 11C, the outside between the radiation fins 232 via the air vent 243. Cold air flows in. As a result, the hot air between the heat radiation fins 232 is pushed out to promote the convection of the air on the back surface of the base 230. Therefore, a wide light distribution angle can be realized, and efficient exhaust heat can be realized.

Furthermore, the straight tube type LED lamp 201 is attached to the socket of the luminaire by retracting the surface provided with the vent 243 in the positive direction of the Y axis with respect to the surface provided with the connection portion 245. In this case, a space for external cold air to flow between the air vent 243 and the socket is secured. Thus, air convection at the back of the base 230 is promoted, and efficient exhaust heat is realized.

In the present embodiment, although the structure in which the

vents

243 and 253 are provided in both the base 240 and the base 250 has been described, a straight tube LED in which the vent is provided in only one of the bases is described. Even lamps are included in the present invention.

Note that the mouthpiece

main bodies

241 and 251 may be configured to be capable of being disassembled into two upper and lower (in the XY plane).

In addition, the ventilation structure of the

caps

240 and 250 according to the present embodiment is not limited to the

vents

243 and 253 described above. Hereinafter, modifications of the ventilation structure of the

caps

240 and 250 according to the present embodiment will be described.

FIG. 12A is an end perspective view of a straight tube type LED lamp for explaining a ventilation structure of a mouthpiece main body according to a first modified example of the second embodiment of the present invention, and FIG. 12B is a second embodiment of the present invention. It is the front view and side view of the nozzle | cap | die main body which concerns on the 1st modification of embodiment.

The cap 260 illustrated in FIGS. 12A and 12B is, like the cap 240, a cap for feeding and a cap for receiving power. The mouthpiece 260 according to the present modification differs from the mouthpiece 240 according to the second embodiment in that the ventilation structure for allowing external cold air to flow into the radiation fins 232 differs, and the surface provided with the screw holes 264. And the surface on which the connection portion 265 for fixing the feed pin 262 is provided is the same. Hereinafter, the description of the same points as those of the base 240 according to the second embodiment will be omitted, and points different from the base 240 will be mainly described.

As shown in FIG. 12B, in the bottomed cylindrical base body 261, in addition to the connection portion 265 for projecting and fixing the feed pin 262 and the screw hole 264 for fixing the base 260 to the base 230, the base body 261. An opening 263 is provided in which a portion of the cylindrical portion of the With this configuration, the opening 263 has a ventilation structure to allow the outside air to flow into the radiation fin 232 provided on the back surface of the base 230 via the base 260.

Note that a front view and a side view of a base body of a non-power-feeding base that faces the base 260 and covers the other end of the long casing in the longitudinal direction formed of the translucent cover 220 and the base 230 Although illustration is omitted, compared with the structure of the mouthpiece main body 261, only the configuration of the connecting portion for fixing one non-feed pin fixedly differs. Therefore, the opening provided in the non-feed base body has the same function as the opening 263 described below. Hereinafter, the function of the opening 263 will be described.

In the case of the straight tube type LED lamp 201 having the opening 263, external cold air flows into the space between the radiation fins 232 via the opening 263. As a result, the hot air between the heat radiation fins 232 is pushed out to promote the convection of the air on the back surface of the base 230. Therefore, efficient waste heat is realized.

The shape of the opening 263 provided in the mouthpiece main body 261 may not be one opening in which the cylindrical side surface of the mouthpiece main body 261 is cut out in the lateral direction of the back face of the base 230 as described above. For example, by providing a plurality of slits (notches) on the cylindrical side surface of the mouthpiece main body 261 facing the concave portions between the adjacent heat radiation fins 232, the plurality of slits may be provided as openings provided in the mouthpiece main body.

Furthermore, the 2nd modification of the ventilation structure of the nozzle | cap | die which concerns on this embodiment is demonstrated. In the mouth ring 260 according to the first modification, the cylindrical side surface of the mouth ring main body 261 is partially cut away. However, even if such a notch is not provided, the shape of the portion of the cylindrical side surface of the mouthpiece main body covering the heat dissipating fins 232 may be a concavo-convex shape along the concavo-convex shape of the heat dissipating fins 232 facing each other. In other words, the uneven shape of the plurality of heat dissipating fins 232 and the uneven shape of the cylindrical side surface of the mouthpiece main body closely opposed to the plurality of heat dissipating fins 232 may be fitted. That is, the ventilation structure of the die may be made to correspond to the concavo-convex shape between the plurality of heat dissipating fins 232 and be provided as the concavo-convex shape provided on the cylinder side surface of the mouthpiece main body. With this structure, it is possible to allow external cold air to smoothly flow between the heat dissipating fins 232 from the above-described uneven shape of the die.

Third Embodiment
Next, an example in which the lamps according to the first and second embodiments of the present invention are applied to a lighting device will be described using FIG.

FIG. 13 is a perspective view showing a configuration of a lighting device according to a third embodiment of the present invention.

The illuminating device 100 which concerns on this embodiment is equipped with the lamp | ramp 10 which concerns on the said 1st Embodiment, or the straight tube | pipe type LED lamp 201 which concerns on 2nd Embodiment, and the lighting fixture 110, as shown in FIG. Such a lighting device 100 is mounted on a ceiling or the like via a fixture.

The lighting fixture 110 includes a pair of sockets 120 electrically connected to the lamp 10 and holding the lamps, a fixture body 130 to which the sockets 120 are attached, and a circuit box (not shown). The inner surface of the instrument body 130 is a reflective surface 131 that reflects the light emitted from the lamp in a predetermined direction (downward in FIG. 13). In addition, the circuit box accommodates the lighting circuit which supplies electric power to the said lamp | ramp, when the switch outside a figure is an ON state in the inside, and does not supply electric power in an OFF state.

As described above, since the lighting device 100 according to the present embodiment uses the lamp 10 according to the first embodiment or the straight tube LED lamp 201 according to the second embodiment, the light emission efficiency is lowered. And uneven brightness can be suppressed.

As mentioned above, although the light source for illuminations and the illuminating device of this invention were demonstrated based on embodiment, this invention is not limited to these embodiments. It is within the scope of the present invention to apply various modifications that those skilled in the art would think within the scope of the present invention. Moreover, you may combine each component in several embodiment arbitrarily in the range which does not deviate from the meaning of invention.

For example, in the first and second embodiments, an LED is illustrated as a light emitting element, but a semiconductor light emitting element such as a semiconductor laser, or an EL element such as organic EL (Electro Luminescence) or inorganic EL, other solid light emitting elements May be used.

In the first and second embodiments, although the feeding method is one-sided feeding method, G13 base and L-type base (L-shaped plate-shaped power reception with both bases using the power receiving pin as the receiving pin) It may be a double-sided feeding method such as a base having a pin). In this case, the power receiving pin on one side and the power receiving pin on the other side may be set to one pin, and the power receiving pin on one side and the power receiving pin on the other side both receive AC power from both sides as a pair of power receiving pins. Any configuration may be used. Further, the pair of power receiving pins and the ground pins are not limited to rod-like metal, and may be made of flat plate metal or the like.

Further, in the above embodiment, although one of the two bases 60 is one pin (one pin) and the other is two pins (two pins), the one-pin two-pin base structure is described. A two-pin / two-pin base structure may be adopted, in which each of the two 60 is a two-pin (two-pin). In addition, a G13 base can be used as a two-pin base. Further, as the base 60, it is also possible to use an L-shaped pin base of a straight tube type LED lamp conforming to JEL 801 standardized by the Japan Light Bulb Industry Association.

Moreover, in the said embodiment, although the nozzle | cap | die 60 was comprised so that direct current power might be received, you may comprise it so that alternating current power may be received. When the base 60 receives AC power, the lighting circuit built in the lamp 10 includes a circuit for converting AC power to DC power.

Although the SMD type LED module is used in the above embodiment, a COB (Chip On Board) type LED module 50a as shown in FIGS. 14A and 14B may be used. FIG. 14A is a plan view (top view) showing the configuration of the LED module 50a, and FIG. 14B is a cross-sectional view of the LED module 50a taken along line A-A 'of FIG. 14A. The COB type LED module 50a includes a mounting substrate 52, a plurality of LEDs 53 directly mounted in a line on the mounting substrate 52, a sealing member 51a for collectively sealing the plurality of LEDs 53, a wiring 54, and electrostatic protection An element 55, an electrode terminal 56, and a wire 57 such as a gold wire are provided. In the plurality of LEDs 53, a p-side electrode and an n-side electrode for supplying current are formed on the top surface of the chip, and the p-side electrode and the n-side electrode are wire-bonded to the wiring 54 by the wire 57. . The sealing member 51 a has a substantially semicircular dome shape with an upward convex cross section, and is formed linearly along the arrangement direction of the LEDs 53 so as to cover all the LEDs 53 on the mounting substrate 52. The electrostatic protection element 55 is, for example, a zener diode, and prevents the LED 53 having a low reverse withstand voltage from being destroyed by static electricity of the reverse polarity generated on the mounting substrate 52. The wiring 54 electrically connects the plurality of LEDs 53 and the electrostatic protection element 55. The linear (striped) sealing member 51 a is formed closer to one long side than a straight line passing the center of the mounting substrate 52 in the short direction. In addition, the sealing member 51 a is formed on the surface of the mounting substrate 52 without interruption from one end face in the longitudinal direction to the other end face opposed thereto. Further, the two electrode terminals 56 are offset to one long side of the mounting substrate 52 with reference to the sealing member 51 a. At this time, the sealing member 51a is supposed to collectively seal all the LEDs 53 on the mounting substrate 52, but a plurality of sealing members 51a are provided in an island shape on one mounting substrate 52, and a plurality of sealing members 51a Each may individually seal one or more LEDs 53.

In the lamp according to the second embodiment, the structure of the lamp according to the first embodiment, that is, a part of the back surface of the base constitutes the outer surface of the cylindrical structure of the casing, and the other surface of the base In the structure in which a part of the light shielding cover is covered with the light transmitting cover, the structure further has a ventilation structure for allowing the outside air to flow into the heat dissipation structure through the base. However, the lamp according to the present invention does not have the structure of the lamp according to the first embodiment, but includes the structure of the lamp according to the second embodiment, that is, the lamp having only the ventilation structure. As a result, the hot air between the heat dissipating fins is pushed out to promote the convection of air at the back of the base. Therefore, since efficient exhaust heat is realized, it is possible to increase the surface area of the light transmitting cover by an amount that can reduce the heat dissipation structure itself, and to increase the light distribution angle.

Moreover, in the said 1st Embodiment, although two LED modules are provided in the lamp | ramp, it does not restrict to this. For example, one LED module may be provided. In addition, the length and the shape of the mounting substrate of the LED module, or the number of LEDs to be mounted may be appropriately changed.

In the first embodiment, the plurality of fins are formed on the back surface of the base, but the back surface of the base may be flat.

Further, in the above embodiment, although the mounting substrate on which the LED is mounted is directly mounted in contact with the surface of the base, the insulating property is provided between the mounting substrate on which the LED is mounted and the surface of the base. Another substrate may be provided. At this time, as another substrate, a substrate similar to the mounting substrate can be used, and for example, a resin substrate such as a flexible substrate can be used.

In the first and second embodiments, the end face (circumferential end face) of the end of the light transmitting cover fitted with the groove of the base is continuous in the longitudinal direction, and forms one plane. The end of the light-transmissive cover is engaged with the groove of the base continuously in the longitudinal direction. By the way, since distortion (at the time of molding) is inherent in the translucent cover made of resin, when the translucent cover is slide-inserted into the base, the stress from the base causes the translucent cover to be broken or chipped Do. In particular, when the length of the light transmitting cover in the longitudinal direction is long as in the 110 type, a large amount of distortion is inherent at the time of resin molding, so this problem becomes remarkable. In addition, the shape of the light transmitting cover as viewed in the longitudinal direction exceeds a semicircle, and the main opening of the light transmitting cover is 180 centered on the central axis of the light transmitting cover as viewed in the long direction. In the case where the light transmission cover is continuously formed in a range smaller than °°, distortion of the light transmission cover is particularly high. On the other hand, by reducing the contact area at the fitting portion between the groove of the base and the end of the light transmitting cover, it is possible to relieve the stress that the light transmitting cover receives from the base. As a configuration for realizing this, the end of the light transmitting cover is formed in a claw shape by being interrupted in the longitudinal direction, and the unevenness whose height changes in the circumferential direction of the light transmitting cover is the end of the light transmitting cover The configuration formed on the end face of the lens can be considered. In this configuration, the convex portion (claws) of the end face of the end of the translucent cover is fitted with the groove of the base and is in contact with the surface of the groove of the base, but the end face of the end of the translucent cover The concave portion of the groove does not fit in the groove of the base and does not contact the surface of the groove of the base. As another configuration, it is conceivable that the width of the groove of the base is constant in the longitudinal direction, and the thickness of the end of the light-transmissive cover changes in the longitudinal direction. In this configuration, the thick portion at the end of the light transmitting cover is engaged with the groove of the base and is in contact with the surface of the groove of the base, but the thin portion at the end of the light transmitting cover is the base A gap is formed between the thin portion at the end and the groove of the base without fitting (contacting) with the groove. Further, as another configuration, it is conceivable that the thickness of the end portion of the translucent cover is constant in the longitudinal direction, and the width (opening width) of the groove of the base varies in the longitudinal direction. In this configuration, the narrow portion of the groove of the base is engaged with the end of the light-transmitting cover to be in contact with the end of the light-transmitting cover, while the wide portion of the groove of the base is light-transmitting A gap is formed between the wide part of the groove of the base and the end of the light-transmitting cover without fitting with the end of the sexing cover.

Also, for example, in the second embodiment, the heat dissipation structure disposed on the back surface of the base 230 extends in the longitudinal direction of the elongated casing configured of the translucent cover 220 and the base 230. Although a plurality of heat radiation fins 232 are arranged adjacent to each other, the heat radiation structure is not limited to this. The heat dissipation structure of the straight tube type LED lamp of the present invention may be the heat dissipation structure shown in FIG. 15A or FIG. 15B.

FIG. 15A is a rear view of a base showing a first modification of the heat dissipation structure of the straight tube LED lamp according to the second embodiment, and FIG. 15B is a straight tube LED lamp according to the second embodiment. It is a base stand rear view which shows the 2nd modification of the thermal radiation structure of this. FIG. 15A and FIG. 15B show the layout of the radiation fin that constitutes the heat radiation structure on the back of the base 233 and the base 234, respectively.

The heat dissipating structure shown in FIG. 15A is different from the heat dissipating structure having the heat dissipating fins 232 of the base 230 according to the second embodiment in that the heat dissipating fins extending in the longitudinal direction (Y-axis direction) of the base are predetermined. It has a structure divided at intervals. According to the above structure, external cold air can be made to flow into the radiation fin not only through the ventilation structure of the base 240 but also from the divided portion of the radiation fin, so that effective air convection can be achieved and more efficient discharge. Heat is realized.

In the heat dissipation structure shown in FIG. 15B, the heat dissipation structure on the back surface of the base 230 according to the second embodiment is composed of a plurality of heat dissipation fins 232 extended in the longitudinal direction (Y-axis direction) of the base. On the other hand, it is comprised by the several radiation fin extended in the transversal direction (X-axis direction) of a base. Moreover, each of the plurality of heat radiation fins is divided at a predetermined interval. According to the above structure, external cold air can be made to flow into the radiation fin through the ventilation structure of the mouth ring 240 and the divided portion of the heat radiation fin, and the outside cold air can be outside from the short direction of the base without passing through the ventilation structure of the mouth ring 240 It can be made to flow into the radiation fin. Thus, effective air convection is achieved, and more efficient exhaust heat is realized.

Further, for example, in the second embodiment, although the single-sided power feeding method in which power is supplied to all the LEDs in the casing from one side of only the base 240 or the base 260 is adopted, G13 base and L13 in which both bases are power receiving pins It does not matter as a both sides electric power feeding system, such as a shape base (a base with a flat plate-like receiving pin bent in L shape), or the like. In this case, the power receiving pin on one side and the power receiving pin on the other side may be one pin, or the power receiving pin on one side and the power receiving pin on the other side may both receive power as a pair of power receiving pins from both sides. I do not care. Further, the pair of power receiving pins and the ground pins are not limited to rod-like metal, and may be made of flat plate metal or the like.

From the aspect of the above power feeding system, the following variations can be mentioned, for example, in the straight tube type LED lamp according to the present invention. That is, a single-sided feed system in which one side is an L-shaped base and a other side has a base with an earth pin, and a double-sided feed system in which both sides are L-shaped bases, a single-sided power supply And a single-sided power supply system configured with a G13 cap, or the like.

The straight tube type LED lamp 201 according to the second embodiment receives DC power from an external power supply, but receives AC power from the external power supply by incorporating a power supply circuit (converter circuit). It may be a method.

Moreover, in the said embodiment, although it comprised so that white light might be emitted with a blue LED chip and yellow fluorescent substance, it is not restricted to this. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used to emit white light by combining it with a blue LED chip. In addition, an LED chip that emits a color other than blue may be used, for example, an ultraviolet LED chip that emits ultraviolet light having a shorter wavelength than blue light emitted by the blue LED chip, mainly by ultraviolet light. It may be configured to emit white light by blue phosphor particles that are excited to emit blue light, red light and green light, green phosphor particles and red phosphor particles.

In addition, an embodiment obtained by applying various modifications to those skilled in the art to each embodiment, and an embodiment realized by arbitrarily combining components and functions in each embodiment without departing from the scope of the present invention. Also included in the present invention.

DESCRIPTION OF REFERENCE NUMERALS 10 lamp 20 220 light transmitting cover 21 221 main opening 22 end 30 230 233 234 base 30 a fin 31 groove 32 244 264 screw hole 50 50 a LED module 51 51 a sealing

member

52, 272 Mounting board 53 LED
54, 274 Wiring 55

Electrostatic Protection Element

56, 276 Electrode Terminal 57

Wire

58, 278 LED Element 59

Package

60, 240, 250, 260 Base 61 Reception Pin 62 Arspin 100 Lighting Device 110 Lighting Fixture 120 Socket 130 Device Body 131 Reflective Surface 201 straight tube type LED lamp 231 mounting portion 232

heat radiation fin

241, 251, 261

base body

242, 262

feed pin

243, 253

air vent

245, 265 connection portion 252 non-feed pin 263 opening portion

Claims

An illumination light source having a cylindrical casing,
A light emitting module provided inside the housing and having a light emitting element, and a substrate provided with the light emitting element on its surface;
A translucent cover which constitutes a part of the housing and covers the surface of the substrate;
And a base on which the light emitting module is provided on the surface.
The translucent cover is a cutout cylindrical member having a main opening in which a part of an elongated cylinder is cut out in a longitudinal direction,
The base holds the translucent cover so as to close the main opening;
A part of the back surface of the base constitutes the outer surface of the cylindrical structure of the housing,
The other part of the back surface of the base is covered with the translucent cover,
A groove for holding the translucent cover is formed on another part of the back surface of the base.
The illumination light source according to claim 1, wherein the base has a fin structure on a part of the back surface.
The illumination light source according to claim 2, wherein the groove is formed by a fin that constitutes the fin structure.
The illumination light source further includes a base provided to close the opening of the end of the housing,
The illumination light source according to any one of claims 1 to 3, wherein the groove is continuous with a screw hole for fixing the base.
The illumination light source according to any one of claims 1 to 4, wherein the translucent cover is slidably held in the groove.
The illumination light source according to any one of claims 1 to 4, wherein an end portion in a circumferential direction of the translucent cover is fitted to the groove.
The illumination light source according to claim 6, wherein an end portion in a circumferential direction of the light transmitting cover protrudes below the substrate when the light transmitting cover is viewed in a long direction.
The base has a heat dissipation structure on part of the back surface,
A bottomed cylindrical cap for covering an end of the elongated case in the longitudinal direction;
The illumination light source according to claim 1, wherein the base has a venting structure for flowing outside air into the heat dissipation structure through the base.
The illumination light source according to claim 8, wherein the ventilation structure is a ventilation port provided on a bottom surface of the mouthpiece.
The bottom surface of the mouthpiece is configured of a first flat portion and a second flat portion including a plane whose normal direction is a longitudinal direction of the elongated case.
The first flat portion is provided with the vent disposed opposite to the end side surface of the base,
The second flat portion is provided with a connection terminal detachably connected to an external socket,
The illumination light source according to claim 9, wherein the first flat surface portion recedes toward the longitudinal center of the housing in the longitudinal direction of the housing with respect to the second flat surface portion.
The illumination light source according to claim 8, wherein the ventilation structure is an opening in which a part of a cylindrical side surface of the mouthpiece is cut out.
The light source for illumination according to claim 8, wherein the heat dissipation structure is a structure in which a plurality of heat dissipation fins extending in the longitudinal direction of the elongated casing are disposed adjacent to each other.
The light source for illumination according to claim 12, wherein the ventilation structure is a concavo-convex shape provided on a side surface of a cylindrical shape of the die corresponding to the concavo-convex shape of a plurality of adjacent heat radiation fins.
An illumination device comprising the illumination light source according to any one of claims 1 to 13.