JP6281815B2 - Illumination light source and illumination device - Google Patents

Description

  The present invention relates to an illumination light source and an illumination device, for example, an illumination light source and an illumination device having a light emitting element such as a light emitting diode (LED).

  The LED is expected to be an alternative light source for various lamps such as fluorescent lamps and incandescent lamps which are conventionally known because of high efficiency and long life. In particular, product development of lamps using LEDs (LED lamps) has been actively promoted.

  As this type of LED lamp, for example, a straight tube type LED lamp (straight tube LED lamp) that replaces a straight tube fluorescent lamp is known (see Patent Document 1).

  Such a straight tube LED lamp includes a base provided at both ends of a long outer casing, an LED module, and a lighting circuit for lighting the LED module. The LED module includes, for example, a substrate and a plurality of LED elements mounted on the substrate.

JP 2009-043447 A

  However, the above-mentioned conventional straight tube LED lamp has a problem that the lead wire arranged in the outer casing is shaded.

  In the above conventional straight tube LED lamp, the base and the outer casing are assembled in a state in which the substrate disposed in the outer casing and the power supply pins are connected by lead wires. For example, in the straight tube LED lamp described in Patent Document 1, the circuit board and the male connector are connected by a lead wire in the outer casing.

  In order to efficiently perform lead wire connection work and assembly work, a lead wire longer than the length of the lead wire required after assembly is required. At this time, the surplus portion of the lead wire remains in the outer casing and may become a shadow when irradiated with light.

  Therefore, the present invention provides an illumination light source and an illumination device that can suppress a decrease in efficiency of assembly work and can suppress generation of shadows during light irradiation.

  In order to solve the above problems, an illumination light source according to one embodiment of the present invention includes a long substrate in which a light emitting element is disposed, a long housing in which the substrate is disposed, and the housing. A base having a base provided with a base provided at a longitudinal end of the body and a lead wire for electrically connecting the substrate and the base, wherein the base has a first through hole. A main body and a base pin fixed to the base body so as to be exposed to the outside of the base body, and the lead wire is inserted into the first through hole, and the base pin is disposed outside the base body. Connected to.

  In the illumination light source according to one aspect of the present invention, the base pin is provided with a second through hole, and the lead wire is further inserted into the second through hole and connected to the base pin. Also good.

  In the illumination light source according to one aspect of the present invention, the first through hole and the second through hole may be continuous in the through direction.

  In the illumination light source according to one aspect of the present invention, the base pin may be fixed so as to protrude only outward from the outer surface of the base body.

  In the illumination light source according to one aspect of the present invention, at least a part of the first through hole has an opening exposed to the inside of the base body, and a direction from the inside to the outside of the base body is a tip direction. It may be a taper hole.

  In the illumination light source according to one aspect of the present invention, the lead wire may be connected to the base pin by soldering.

  Moreover, the illuminating device which concerns on 1 aspect of this invention is an illuminating device provided with the said light source for illumination.

  ADVANTAGE OF THE INVENTION According to this invention, the efficiency fall of assembly operation can be suppressed and generation | occurrence | production of the shadow at the time of light irradiation can be suppressed.

It is a general-view perspective view which shows an example of the straight tube | pipe LED lamp which concerns on Embodiment 1 of this invention. It is a disassembled perspective view which shows an example of the nozzle | cap | die for electric power feeding which concerns on Embodiment 1 of this invention. It is sectional drawing which shows an example of the through-hole provided in the nozzle | cap | die main body which concerns on Embodiment 1 of this invention. It is sectional drawing which shows an example of the through-hole provided in the nozzle | cap | die main body which concerns on Embodiment 1 of this invention. It is sectional drawing which shows an example of the through-hole provided in the nozzle | cap | die main body which concerns on Embodiment 1 of this invention. It is a general-view perspective view which shows an example of the connection of the lead wire and electric power feeding pin which concern on Embodiment 1 of this invention. It is sectional drawing which shows an example of the connection of the lead wire and feed pin which concern on Embodiment 1 of this invention. It is a general | schematic perspective view which shows an example of the assembly operation | work of the housing | casing which concerns on Embodiment 1 of this invention, and a nozzle | cap | die for electric power feeding. It is a general | schematic perspective view which shows an example of the connection of the lead wire and electric power feeding pin which concern 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.

  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, a straight tube LED lamp, which is an embodiment of a light source for illumination, and a lighting device including the straight tube LED lamp are illustrated.

(Embodiment 1)
First, a straight tube LED lamp according to Embodiment 1 of the present invention will be described. The straight tube LED lamp according to the present embodiment is an example of an illumination light source that replaces a conventional straight tube fluorescent lamp.

[Overall configuration of straight tube LED lamp]
First, an example of the configuration of a straight tube LED lamp according to the present embodiment will be described with reference to FIG. FIG. 1 is a schematic perspective view showing an example of a straight tube LED lamp according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the straight tube LED lamp 1 is for power supply fixed to each of an LED module 10, a long casing 20, and an end portion in the longitudinal direction (tube axis direction) of the casing 20. A base 30 and a non-power supply base 40, and a lead wire 50 that connects the LED module 10 and the power supply base 30 are provided. The straight tube LED lamp 1 is, for example, a 40-shaped straight tube LED lamp, and the total length of the lamp is about 1200 mm.

  In FIG. 1, the X-axis direction is the short direction of the LED module 10. The Y-axis direction is the longitudinal direction of the LED module 10, that is, the tube axis direction of the housing 20. The Z-axis direction is a direction perpendicular to the main surface of the LED module 10.

  Hereinafter, each component of the straight tube LED lamp 1 will be described in detail.

[LED module]
First, the LED module 10 according to the present embodiment will be described.

  As shown in FIG. 1, the LED module 10 is a light source of the straight tube LED lamp 1 and is disposed in the housing 20. For example, the LED module 10 is arranged so that the end portion protrudes from the housing 20.

  The LED module 10 according to the present embodiment is a light emitting module of a surface mount (SMD: Surface Mount Device) type. The LED module 10 includes a substrate 11 and a plurality of LED elements 12 mounted on the substrate 11. Although not shown, the LED module 10 includes a lighting circuit for lighting a plurality of LED elements 12 and a metal wiring pattern-patterned in a predetermined shape for electrically connecting the plurality of LED elements 12 and the lighting circuit. With.

  The substrate 11 is a long substrate disposed in the housing 20. The substrate 11 is, for example, a rectangular substrate. The substrate 11 has a longitudinal direction (Y-axis direction in FIG. 1) parallel to the longitudinal direction of the straight tubular case 20, and a short side direction (X-axis direction in FIG. 1) is a short direction of the case 20. Are arranged in the housing 20 so as to be parallel to each other.

  The substrate 11 has a first main surface (front surface) and a second main surface (back surface) that face each other. As shown in FIG. 1, a plurality of LED elements 12 arranged in the longitudinal direction and metal wiring (not shown) for supplying power to the plurality of LED elements 12 are formed on the first main surface of the substrate 11. ) And are provided.

  The substrate 11 has, for example, a length of 1150 to 1200 mm (longitudinal direction), a width of 5 to 25 mm (short side direction), and a thickness of 0.3 to 2.0 mm. The substrate 11 is longer than the housing 20 in the longitudinal direction.

  Specifically, the substrate 11 is a mounting substrate for mounting the LED element 12. The substrate 11 is, for example, a resin substrate based on resin, a metal base substrate based on metal, a ceramic substrate made of ceramic, or a glass substrate made of glass.

  The resin substrate may be made of, for example, a glass epoxy substrate made of glass fiber and epoxy resin (CEM-3, FR-4, etc.), a substrate made of paper phenol or paper epoxy (FR-1 etc.), or polyimide. For example, a flexible substrate having flexibility. The metal base substrate is, for example, an aluminum alloy substrate, an iron alloy substrate, or a copper alloy substrate having an insulating film formed on the surface. In the present embodiment, a CEM-3 double-sided substrate is used as the substrate 11.

  One end of the substrate 11 in the longitudinal direction is covered with a power supply cap 30. The other end of the substrate 11 in the longitudinal direction is covered with a non-power feeding base 40. For example, the substrate 11 is arranged so that the end portion protrudes from the housing 20, and at least the protruding portion is covered with the power supply base 30.

  The board | substrate 11 is being fixed to the inner surface of the housing | casing 20 with the adhesive agent 60 (refer FIG. 5) at several positions, for example. The adhesive 60 is intermittently applied between the inner surface of the housing 20 and the second main surface (back surface) of the substrate 11 in order to bond and fix the housing 20 and the LED module 10. That is, the substrate 11 is fixed to the housing 20 by the adhesive 60 at a plurality of positions different from each other in the longitudinal direction of the substrate 11. The adhesive 60 may be continuously applied along the longitudinal direction of the housing 20.

  As the adhesive 60, it is preferable to use a material having a thermal conductivity of 1.0 W / m · K or more from the viewpoint of heat dissipation. Further, from the viewpoint of weight reduction, it is preferable to use a material having a specific gravity of 2 or less as the adhesive 60. For example, as the adhesive 60, an adhesive made of silicone resin or cement can be used.

  Instead of the adhesive 60, a double-sided tape having a thickness and a shape that can adhere to the second main surface of the substrate 11 and the inner surface of the housing 20 may be used. That is, any member that can fix the substrate 11 and the housing 20 may be used.

  The LED element 12 is an example of a light emitting element and is mounted on the substrate 11. In the present embodiment, the plurality of LED elements 12 are mounted so as to be arranged in a line along the longitudinal direction of the substrate 11. As shown in FIG. 1, each of the plurality of LED elements 12 is disposed apart from each other.

  The LED element 12 is a so-called SMD type light emitting element in which an LED chip and a phosphor are packaged. The LED element 12 includes a package, an LED chip disposed in the package, and a sealing member that seals the LED chip. The LED element 12 is, for example, a white LED element that emits white light.

  The package is a container formed of a white resin or the like, and includes an inverted frustoconical concave portion (cavity). The inner surface of the recess is inclined and configured to reflect light from the LED chip upward.

  The LED chip is mounted on the bottom surface of the recess of the package. The LED chip is a bare chip that emits monochromatic visible light, and is die-bonded to the bottom surface of the recess of the package by a die attach material (die bond material). The LED chip is, for example, a blue LED chip that emits blue light when energized.

  The sealing member is a phosphor-containing resin including a phosphor that is a light wavelength converter, and converts light emitted from the LED chip into a predetermined wavelength (color conversion). The sealing member protects the LED chip by sealing the LED chip. The sealing member is filled in the recess of the package, and is sealed up to the opening surface of the recess.

The sealing member includes a material selected based on the color (wavelength) of light emitted from the LED chip and the color (wavelength) of light required as a light source. For example, in order to obtain white light when the LED chip is a blue LED chip, a phosphor-containing resin obtained by dispersing YAG (yttrium, aluminum, garnet) -based yellow phosphor particles in a silicone resin is used as a sealing member. Can be used. As a result, the yellow phosphor particles are excited by the blue light of the blue LED chip to emit yellow light, so that the sealing member emits white light as a combined light of the excited yellow light and the blue light of the blue LED chip. Is released. The sealing member may contain a light diffusing material such as silica (SiO ₂ ).

  The LED element 12 configured in this way has two electrode terminals of a positive electrode and a negative electrode, and these electrode terminals and the metal wiring formed on the substrate 11 are electrically connected.

  The metal wiring (not shown) is a metal wiring for supplying predetermined power to each of the plurality of LED elements 12. The metal wiring is patterned in a predetermined shape. In the present embodiment, the straight tube LED lamp 1 employs a one-side power feeding method in which power is fed to all the LED elements 12 in the housing 20 from one side of the power feeding base 30 alone.

  For example, the metal wiring is connected to a pair of power supply pins 32 of a power supply base by two lead wires 50 (a pair of lead wires). For example, the end portion of the lead wire 50 is soldered to the metal wiring.

  The metal wiring is made of a metal having high conductivity such as copper (Cu), for example. Alternatively, the metal wiring may be nickel, aluminum, gold, or a laminated film or alloy made of two or more metals among these.

  The lighting circuit (not shown) is an LED lighting circuit for lighting the LED element 12 mounted on the LED module 10. The lighting circuit is composed of one or a plurality of circuit elements (circuit parts).

  For example, the lighting circuit adjusts and outputs a DC voltage input via the lead wire 50 to a predetermined polarity for causing the LED element 12 to emit light. The DC power output from the lighting circuit is supplied to the LED element 12 of the LED module 10 via, for example, a metal wiring formed on the substrate 11.

  A circuit element (not shown) is directly mounted on the substrate 11 using the substrate 11 of the LED module 10. The circuit element is, for example, a rectifier circuit, a detection resistor, or a fuse element. In addition, a resistor, a capacitor, a coil, a diode, a transistor, or the like may be used as necessary.

  Further, the lighting circuit may be provided on a substrate (circuit substrate) different from the substrate 11. In this case, the circuit board and the board 11 may be electrically connected with a lead wire or the like.

  In order to improve the light extraction efficiency of the LED module 10, a white paint (white resist) may be applied to the surface of the substrate 11. Since the white resist has high light reflectivity, the light extraction efficiency of the LED module 10 can be improved. Further, by forming the white resist, the insulating property (breakdown voltage) of the substrate 11 can be improved, and oxidation of the metal wiring can be suppressed.

[Case]
The case 20 is a long case in which the substrate 11 is disposed. Specifically, the housing 20 is a long translucent cover having translucency that covers a part of the LED module 10.

  For example, as illustrated in FIG. 1, the housing 20 is a long cylindrical body having openings at both ends. Specifically, the housing 20 is a straight tubular outer tube and is made of a transparent resin material or glass. The casing 20 is a cylinder whose cross section in the short direction (XZ cross section) is circular. Note that one end of the casing 20 in the longitudinal direction is covered with a power supply cap 30. Further, the other end portion of the casing 20 in the longitudinal direction is covered with a non-power feeding base 40.

  For example, the casing 20 is a glass bulb (clear bulb) made of silica glass that is transparent to visible light. In this case, the LED module 10 disposed in the housing 20 can be viewed from the outside of the housing 20.

  Specifically, the housing 20 is a glass tube (glass bulb) containing soda-lime glass having 70 to 72% silica as a main component and having a thermal conductivity of about 1.0 W / m · K. Alternatively, the housing 20 may be a plastic tube containing a resin material such as acrylic (PMMA) or polycarbonate (PC).

  In addition, in order to diffuse the light from the LED module 10, the housing | casing 20 may have a light-diffusion function. For example, a light diffusion sheet or a light diffusion film may be formed on the inner surface or the outer surface of the housing 20. Specifically, a milky white light diffusing film can be formed by attaching a resin containing a light diffusing material (fine particles) such as silica or calcium carbonate, or a white pigment to the inner surface or the outer surface of the housing 20. it can.

  Further, the light diffusing function may be realized by a lens structure provided inside or outside the housing 20, or a concave portion or a convex portion formed on the inner surface or the outer surface of the housing 20. For example, the light diffusion function can be realized by printing a dot pattern on the inner surface or the outer surface of the housing 20 or processing a part of the housing 20. Alternatively, the light diffusing function can be realized by molding the housing 20 itself using a resin material in which a light diffusing material is dispersed.

  Thus, by providing the housing 20 with the light diffusing function, it is possible to diffuse the light emitted from the LED module 10 when the light passes through the housing 20. For example, if the SMD type LED elements 12 are arranged apart from each other as in the present embodiment, there is a possibility that a light crushing feeling (luminance variation) may occur. On the other hand, by providing the housing 20 with a light diffusing function, it is possible to suppress the feeling of being crushed.

[Feeding cap]
The power supply base 30 is a power supply base for supplying power to the LED module 10. The feeding base 30 is provided at one end of the casing 20 or the substrate 11 in the longitudinal direction (Y-axis direction). The power supply cap 30 receives power for lighting the LED element 12 from the outside of the lamp.

  The power supply cap 30 is configured in a cap shape so as to cover one end of the casing 20 in the longitudinal direction. That is, the power supply cap 30 has a bottomed cylindrical shape and is provided so as to cover one end of the housing 20 in the longitudinal direction. For example, the power supply cap 30 is bonded to one end of the housing 20 with an adhesive. In the present embodiment, the power supply cap 30 is a cylinder having an opening on one side and a bottom on the other side.

  In addition, the adhesive agent used for adhesion | attachment with the nozzle | cap | die 30 for electric power feeding and the housing | casing 20 is a silicone resin, for example. For example, the adhesive used for bonding the power supply base 30 and the housing 20 is made of the same material as the adhesive 60 used for connecting the substrate 11 and the housing 20. At this time, one end portion of the substrate 11 protruding from the housing 20 and the power supply base 30 may be fixed with an adhesive.

  Below, the detailed structure of the nozzle | cap | die 30 for electric power feeding is demonstrated using FIGS. 2-3C. FIG. 2 is an exploded perspective view showing an example of the power supply cap according to the first embodiment of the present invention. 3A to 3C are cross-sectional views showing examples of through holes provided in the base body according to Embodiment 1 of the present invention.

  As shown in FIG. 2, the power supply base 30 includes a base body 31 and power supply pins 32.

  The base body 31 is provided at one end of the casing 20 in the longitudinal direction. For example, the base body 31 is a cylindrical base body and forms an outer shell of the power supply base 30. The base body 31 holds the power supply pin 32.

  Specifically, the base body 31 is a cylindrical base body having an opening and a bottom. The base body 31 according to the present embodiment has a bottomed cylindrical shape, and has a circular opening and a disc-shaped bottom.

  The base body 31 is made of a resin material such as polybutylene terephthalate (PBT). Here, the power supply cap 30 is produced, for example, by insert molding using a power supply pin 32 and a resin material. Note that the power supply base 30 can be manufactured by press-fitting the power supply pins 32 into the base body 31 that is a resin molded body.

  A through hole 33 is provided in the base body 31. The through hole 33 is an example of a first through hole through which the lead wire 50 is inserted. The through hole 33 is provided so as to penetrate the bottom of the base body 31. In order to insert each of the two lead wires 50, as shown in FIG. 2, the base body 31 is provided with two through holes 33.

  At least a part of the through hole 33 is a tapered hole having an opening exposed to the inside of the base body 31, and is a tapered hole having a direction from the inside to the outside of the base body 31 as a tip direction. Specifically, as shown in FIG. 3A, the through-hole 33 is composed of a tapered hole and a straight hole.

  The tapered hole has an opening inside the base body 31, and the diameter of the opening gradually decreases toward the outside of the base body 31. The tapered hole is, for example, an elliptical cylindrical through hole.

  The straight hole is a circular hole having an opening outside the base body 31 and having a substantially uniform diameter. Note that the tip of the tapered hole and the straight hole have substantially the same diameter. Further, the diameter of the straight hole is larger than the diameter of the lead wire 50.

  As described above, by providing the tapered hole inside the base body 31, the lead wire 50 can be smoothly inserted from the inside of the base body 31 to the outside. Further, by providing a straight hole outside the base body 31, the strength of the base body 31 can be increased as compared with the case of only the tapered hole.

  The through-hole 33 is integrally formed with the base body 31 by, for example, a molding method using a predetermined mold and a resin material. Alternatively, after forming the base body 31 using resin, the through-hole 33 may be formed using a cone or the like in the base body 31 that is a resin molded body.

  The base body 31 may be provided with a through hole 33a instead of the through hole 33, as shown in FIG. 3B. The through hole 33 a is a tapered hole having a tip in the direction from the inner side to the outer side of the base body 31. The diameter of the opening at the tip is larger than the diameter of the lead wire 50.

  As described above, by providing the tapered hole inside the base body 31, the lead wire 50 can be smoothly inserted from the inside of the base body 31 to the outside.

  Further, as shown in FIG. 3C, the base body 31 may be provided with a through hole 33 b instead of the through hole 33. The through hole 33b is a straight hole having a substantially uniform diameter. The diameter of the straight hole is larger than the diameter of the lead wire 50.

  Thus, by providing a straight hole in the base body 31, the thin portion of the base body 31 can be reduced compared to the case of a tapered hole, so that the strength of the base body 31 can be increased.

  Returning to FIG. 2, the power supply pin 32 is an example of a base pin, and is fixed to the base body 31 so as to be exposed to the outside of the base body 31. Specifically, the power supply pins 32 are a pair of conductive pins that receive power for causing the LED module 10 to emit light from an external device such as a lighting fixture.

  For example, the power feed pin 32 is made of a metal material such as brass. By attaching the power supply pin 32 to the receiving fixture of the lighting fixture, the power supply pin 32 can receive DC power from a power supply device built in the lighting fixture.

  The power supply pin 32 is provided so as not to penetrate the bottom of the base body 31. That is, the power supply pin 32 is provided so as to protrude only outward from the outer surface of the bottom portion of the base body 31. That is, the power feed pin 32 is not projected or exposed on the inner surface side of the base body 31 and is embedded in the base body 31.

  The power supply pin 32 may protrude or be exposed on the inner surface side of the base body 31. For example, the base body 31 can hold the power supply pin 32 firmly by projecting the power supply pin 32 toward the inner surface of the base body 31.

  A through hole 34 is provided in the power supply pin 32. The through hole 34 is an example of a second through hole through which the lead wire 50 is inserted. The through hole 34 is provided at a position continuous with the through hole 33 when the power supply pin 32 and the base body 31 are combined.

  As shown in FIG. 2, the power supply pin 32 includes an L-shaped portion 35 and a flat plate portion 36.

  The L-shaped portion 35 is a portion protruding outward from the base body 31. The L-shaped portion 35 is attached to a money receiver when the straight tube LED lamp 1 is attached to a lighting fixture. The L-shaped portion 35 includes a first flat plate portion that is substantially perpendicular to the bottom portion of the base body 31 and a second flat plate portion that extends substantially perpendicularly from one end of the first flat plate portion.

  The flat plate portion 36 is a third flat plate portion that extends substantially at right angles from the end portion of the L-shaped portion 35 (the other end of the first flat plate portion). The flat plate portion 36 is in contact with the outer surface of the base body 31. That is, the flat plate portion 36 is a connection portion with the base body 31 provided to increase the contact area between the power supply pin 32 and the base body 31. The flat plate portion 36 is embedded in the base body 31 so that a part thereof is exposed.

  The through hole 34 is provided in the flat plate portion 36. The through hole 34 is continuous with the through hole 33 provided in the base body 31 in the penetrating direction. The through hole 34 is integrally formed with the power supply pin 32 by a molding method using a predetermined mold and a metal material, for example.

  Note that the power supply cap 30 according to the present embodiment is a GX16t-5 cap (L-shaped pin cap) in a straight tube LED lamp conforming to “JIS C 7709-1”. It is.

[Non-powered cap]
The non-power supply base 40 is a non-power supply side base having a function of attaching the straight tube LED lamp 1 to a lighting fixture. As shown in FIG. 1, the non-power feeding base 40 is provided at the other end of the casing 20 or the substrate 11 in the longitudinal direction (Y-axis direction). That is, the non-power feeding base 40 is provided at the end opposite to the longitudinal end (one end) of the casing 20 where the power feeding base 30 is provided. Note that the non-power supply base 40 may ground (ground) a predetermined region of the LED module 10 via a lighting fixture.

  The non-power feeding base 40 is configured in a cap shape so as to cover the other end in the longitudinal direction of the housing 20. That is, the non-power feeding base 40 has a bottomed cylindrical shape and is provided so as to cover the other end portion in the longitudinal direction of the housing 20. For example, the non-power supply base 40 is bonded to the other end of the housing 20 with an adhesive. In the present embodiment, the non-power feeding base 40 is a cylinder having an opening on one side and a bottom on the other side.

  The adhesive used for bonding the non-power feeding base 40 and the housing 20 is, for example, a silicone resin. For example, the adhesive used for bonding the non-power feeding base 40 and the housing 20 is made of the same material as the adhesive 60 used for connecting the substrate 11 and the housing 20. At this time, the other end of the substrate 11 protruding from the housing 20 and the non-power feeding base 40 may be fixed with an adhesive.

  As shown in FIG. 1, the non-power supply base 40 includes a base body 41 and a non-power supply pin 42.

  The base body 41 is provided at the other end in the longitudinal direction of the housing 20. For example, the base body 41 is a cylindrical base body and forms an outer shell of the non-power feeding base 40. The base body 41 holds the non-power supply pin 42.

  Specifically, the base body 41 is a cylindrical base body having an opening and a bottom. The base body 41 according to the present embodiment has a bottomed cylindrical shape, and has a circular opening and a disk-shaped bottom.

  The base body 41 is made of a resin material such as polybutylene terephthalate. Here, the non-power supply base 40 is produced by insert molding using the non-power supply pin 42 and a resin material, for example. In addition, the non-power feeding base 40 can also be produced by press-fitting the non-power feeding pins 42 into the base body 41 which is a resin molded body.

  The non-power supply pin 42 is an example of a cap pin, and is fixed to the base body 41 so as to be exposed to the outside of the base body 41. The non-power supply pin 42 is an attachment pin for attaching the straight tube LED lamp 1 to a lighting fixture. For example, the non-feed pin 42 is a conductive pin having a T-shaped cross section made of a metal material such as brass.

  The non-power supply pin 42 is provided so as to protrude outward from the bottom of the base body 41. The non-power supply pin 42 is not exposed on the inner surface side of the base body 41 and is embedded in the base body 41. Note that the non-power supply pin 42 may be provided so as to penetrate the bottom of the base body 41. Specifically, the non-power supply pin 42 may protrude outward from the outer surface of the bottom portion of the base body 41 and may protrude from the inner surface of the bottom portion of the base body 41 toward the opening.

[Connection between lead wire and power supply pin]
Subsequently, a connection example between the lead wire 50 and the power supply pin 32 according to the present embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a schematic perspective view showing an example of the connection between the lead wire and the power feed pin according to Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view showing an example of the connection between the lead wire and the power feed pin according to Embodiment 1 of the present invention. FIG. 5 shows a cross section (YZ cross section) perpendicular to the main surface of the substrate 11 and passing through the through hole 33 provided in the base body 31.

  The lead wire 50 is a conducting wire for supplying power to the LED element 12 having one end connected to the power supply pin 32 and the other end connected to the substrate 11. Specifically, one end of each of the two lead wires 50 is connected to a power feed pin 32 that is a pair of conductive pins. Further, the other end of each of the two lead wires 50 is connected to the metal electrode of the substrate 11.

  The lead wire 50 is formed by twisting thin copper wires or the like, for example, and the surface is covered with an insulating member such as polyvinyl chloride or silicone rubber. Specifically, a conductive metal wire or the like is exposed at both ends of the lead wire 50, and a portion excluding both ends is covered with an insulating member. The lead wire 50 includes a metal exposed portion (both end portions) and a covering portion (portion excluding both ends).

  Note that a connection terminal may be provided at the end of the lead wire 50, and the lead wire 50 may be connected to the connection terminal provided on the substrate 11 instead of the metal electrode. The connection terminal is an external connection terminal (electrode terminal) that receives DC power for causing the LED element 12 to emit light from the outside of the LED module 10. Specifically, the connection terminal is a connector having a resin-type base and a conductive portion (pin) for receiving DC power. The conductive portion is connected to the lighting circuit through a metal wiring. Thus, the end portion of the lead wire 50 may be connected to the main surface of the substrate 11 by a connector.

  As shown in FIG. 4, the lead wire 50 is inserted into the through hole 33 and the through hole 34, and is connected to the power supply pin 32 outside the base body 31. Specifically, the lead wire 50 is soldered to the power supply pin 32 by the solder 70 outside the base body 31. More specifically, the lead wire 50 is soldered to the flat plate portion 36 of the power supply pin 32. At this time, the solder 70 electrically and physically connects the lead wire 50 and the power supply pin 32 so as to fill the through hole 34.

  The flat plate portion 36 is embedded in the base body 31 so that at least a part of the flat plate portion 36 is exposed. Specifically, a portion of the flat plate portion 36 where the through hole 34 is formed is exposed. By soldering the lead wire 50 to the exposed portion with the solder 70, the power supply pin 32 and the lead wire 50 can be electrically connected.

  As shown in FIG. 5, the through-hole 33 provided in the base body 31 and the through-hole 34 provided in the power feed pin 32 are continuous in the penetration direction. For example, the through-hole 33 is formed such that one opening surface of the through-hole 33 and one opening surface of the through-hole 34 coincide with each other, and the center line of the through-hole 33 and the center line of the through-hole 34 coincide with each other. And the through-hole 34 is provided.

  Therefore, the lead wire 50 inserted into the through hole 33 from the inside of the base body 31 is inserted into the through hole 34 as it is. Since the through hole 33 is tapered as shown in FIG. 5, the lead wire 50 can be smoothly inserted into the through hole 33 and the through hole 34.

[Assembly of housing and power supply cap]
Subsequently, an assembly example of the housing 20 and the power supply cap 30 according to the present embodiment will be described with reference to FIG. FIG. 6 is a schematic perspective view showing an example of assembling work between the casing 20 and the power supply cap 30 according to the first embodiment of the present invention.

  As shown in FIG. 6A, first, a power supply cap 30 and a housing 20 in which the LED module 10 is fixed are prepared. At this time, one end of the lead wire 50 is connected to the LED module 10. For example, one end of the lead wire 50 is soldered to a metal electrode provided on the main surface of the substrate 11.

  The length of the lead wire 50 may be such a length that the end portion is exposed from the through hole 33 and the through hole 34 when the housing 20 and the power supply base 30 are connected. For example, the length of the lead wire 50 is such that when the housing 20 and the power supply cap 30 are connected, the lead wire 50 passes through the through hole 33 and the through hole 34 from the connection point (metal electrode) on the LED module 10 to supply power. What is necessary is just to be substantially equal to the shortest path | route which reaches the connection point on the pin 32 (opening part of the through-hole 34).

  Next, as shown in FIG. 6B, the housing 20 is inserted into the power supply base 30. At this time, the housing 20 is inserted into the base body 31 so that the lead wire 50 passes through the through hole 33 and the through hole 34. At this time, since the through hole 33 is tapered as shown in FIG. 5, the lead wire 50 can be smoothly inserted.

  Then, the lead wire 50 coming out of the base body 31 from the through hole 34 and the power supply pin 32 are soldered using a soldering iron 80 and solder 81. Since the soldering work can be performed outside the base body 31, compared with the case of soldering inside the base body 31, the workable range is wide and the field of view is wide, so the working efficiency is very good.

  Note that when the lead wire 50 is soldered, the lead wire 50 is sufficiently drawn out of the base body 31 to reduce the excess of the lead wire 50 in the base body 31.

  Furthermore, as shown in (c) of FIG. 6, the surplus portion of the lead wire 50 is cut. Thereby, when attaching straight tube | pipe LED lamp 1 to a lighting fixture, it can suppress that the lead wire 50 which protruded on the outer side becomes obstructive.

  As described above, since the soldering can be performed outside the base body 31, the assembling work can be performed very efficiently. Furthermore, since the surplus portion of the lead wire 50 can be pulled out to the base body 31 side and cut, the length of the lead wire 50 remaining in the base body 31 can be shortened.

  When the lead wire 50 is connected inside the base body 31, the lead wire 50 needs to be long enough to be connected in a state where the power supply base 30 and the housing 20 are separated from each other. In contrast, in the present embodiment, the length of the lead wire 50 can be made substantially equal to the shortest path between the two connection points when the power supply base 30 and the housing 20 are connected. For this reason, the length of the lead wire 50 required at the time of an assembly can be shortened, and cost can be reduced.

[Effects, etc.]
As described above, the straight tube LED lamp 1 according to the present embodiment includes a long substrate 11 in which the LED elements 12 are disposed, a long housing 20 in which the substrate 11 is disposed, The power supply cap 30 provided at the end in the longitudinal direction of the housing 20 and a lead wire 50 that electrically connects the substrate 11 and the power supply cap 30 are provided. The power supply cap 30 has a through hole 33. It has a bottomed cylindrical base body 31 provided and a power supply pin 32 fixed to the base body 31 so as to be exposed to the outside of the base body 31, and the lead wire 50 is inserted through the through hole 33. The power supply pin 32 is connected outside the base body 31.

  As a result, the lead wire 50 is inserted into the through hole 33 and connected to the power supply pin 32 outside the base body 31, so that the connection work between the lead wire 50 and the power supply pin 32 is performed outside the base body 31. be able to. Therefore, compared with the case where it is performed inside the base body 31, the connection work between the lead wire 50 and the power supply pin 32 can be performed very efficiently.

  Further, since the lead wire 50 can be pulled out to the outside of the base body 31 through the through hole 33 before connecting to the power supply pin 32, the length of the lead wire 50 remaining inside the base body 31 is shortened. Can do. Therefore, the possibility that the lead wire 50 becomes a shadow when the LED element 12 emits light can be reduced, and the occurrence of a shadow at the time of light irradiation can be suppressed.

  Further, in the straight tube LED lamp 1 according to the present embodiment, the feed pin 32 is provided with a through hole 34, and the lead wire 50 is further inserted through the through hole 34 and connected to the feed pin 32.

  Thereby, since the lead wire 50 is further inserted through the through hole 34 provided in the power feed pin 32 and connected to the power feed pin 32, the lead wire 50 and the power feed pin 32 can be connected more firmly. it can.

  In the straight tube LED lamp 1 according to the present embodiment, the through hole 33 and the through hole 34 are continuous in the through direction.

  Thereby, since the through-hole 33 and the through-hole 34 are continuing, the lead wire 50 can be taken out from the inner side to the outer side of the base body 31 at a shorter distance. Therefore, since the length of the lead wire 50 can be further shortened, the cost can be reduced.

  In the straight tube LED lamp 1 according to the present embodiment, the power feed pin 32 is fixed so as to protrude only outward from the outer surface of the base body 31.

  Thereby, the space inside the base body 31 can be used effectively. For example, a large-sized circuit component or the like can be disposed inside the base body 31.

  Further, in the straight tube LED lamp 1 according to the present embodiment, at least a part of the through-hole 33 has an opening exposed to the inside of the base body 31, and the direction from the inside to the outside of the base body 31 is the tip direction. This is a tapered hole.

  Thereby, since a part of through-hole 33 is a taper hole, the lead wire 50 can be smoothly inserted through the through-hole 33. Therefore, the connection work of the lead wire 50 can be performed more efficiently.

  In the straight tube LED lamp 1 according to the present embodiment, the lead wire 50 is connected to the power supply pin 32 by soldering.

  As a result, the lead wire 50 can be easily and physically connected to the power feed pin 32 without requiring a component such as a connector.

(Modification of Embodiment 1)
Next, a power supply cap 30a according to a modification of the first embodiment of the present invention will be described with reference to FIG. FIG. 7 is a schematic perspective view showing an example of the connection between the lead wire and the power supply pin according to the modification of the first embodiment of the present invention.

  The power supply base 30a according to the modification of the first embodiment includes a base body 31a and power supply pins 32a. Compared to the first embodiment, the feeding pin 32a is different in that no through hole is provided.

  As shown in FIG. 7, the lead wire 50 is inserted through the through hole 33 and connected to the power supply pin 32a outside the base body 31a. Specifically, the lead wire 50 is soldered to the power supply pin 32 by the solder 70 outside the base body 31a.

  Here, an example in which the lead wire 50 is soldered to the flat plate portion 36a of the power supply pin 32a has been described, but the present invention is not limited thereto. The lead wire 50 may be soldered to the L-shaped portion 35a.

  The through hole 33 is provided so as to penetrate the bottom of the base body 31a. The through hole 33 is preferably provided in the vicinity of the power supply pin 32a. Thereby, the length of the lead wire 50 can be made shorter. The through hole 33 may be provided on the side surface of the base body 31a.

  As described above, in the straight tube LED lamp according to the modification of the present embodiment, the feed pin 32a may not be provided with a through hole. That is, a through hole may be provided only in the base body 31a.

  Thereby, the lead wire 50 is inserted into the through hole 33 and connected to the power supply pin 32a outside the base body 31a. Therefore, the connection work between the lead wire 50 and the power supply pin 32a is performed outside the base body 31a. be able to. Therefore, compared with the case where it is performed inside the base body 31a, the connection work between the lead wire 50 and the power feed pin 32a can be performed very efficiently.

  Furthermore, since the lead wire 50 can be pulled out of the base body 31a through the through-hole 33 before connecting to the power supply pin 32a, the length of the lead wire 50 remaining inside the base body 31a is shortened. Can do. Therefore, the possibility that the lead wire 50 becomes a shadow when the LED element 12 emits light can be reduced, and the occurrence of a shadow at the time of light irradiation can be suppressed.

(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 straight tube LED lamp 1 according to the first embodiment.

  FIG. 8 is a schematic perspective view showing an example of the illumination device 2 according to Embodiment 2 of the present invention. As illustrated in FIG. 8, the lighting device 2 according to the second embodiment is a base light, and includes a straight tube LED lamp 1 and a lighting fixture 200.

  The straight tube LED lamp 1 is the straight tube LED lamp 1 according to Embodiment 1, and is used as an illumination light source of the illumination device 2. In addition, the illuminating device 2 which concerns on this Embodiment is provided with the two straight tube | pipe LED lamps 1 as an example.

  The lighting fixture 200 includes a pair of metal receivers 210 electrically connected to the straight tube LED lamp 1 and holding the straight tube LED lamp 1, and a device main body 220 to which the metal receiver 210 is attached.

  The instrument main body 220 can be formed by, for example, pressing an aluminum steel plate. Further, the surface has a function of a reflecting surface that reflects light emitted from the straight tube LED lamp 1 in a predetermined direction (for example, downward).

  The lighting fixture 200 is mounted on a ceiling or the like via a fixture, for example. The lighting fixture 200 may include a circuit for controlling lighting of the straight tube LED lamp 1 or the like, and a cover member may be provided so as to cover the straight tube LED lamp 1. .

  As described above, in the lighting device 2 according to the present embodiment, the lead wire 50 is inserted into the through-hole 33 and connected to the power supply pin 32 outside the base body 31 as in the other embodiments. Therefore, the connection work between the lead wire 50 and the power supply pin 32 can be performed outside the base body 31. Therefore, compared with the case where it is performed inside the base body 31, the connection work between the lead wire 50 and the power supply pin 32 can be performed very efficiently.

  Further, since the lead wire 50 can be pulled out to the outside of the base body 31 through the through hole 33 before connecting to the power supply pin 32, the length of the lead wire 50 remaining inside the base body 31 is shortened. Can do. Therefore, the possibility that the lead wire 50 becomes a shadow when the LED element 12 emits light can be reduced, and the occurrence of a shadow at the time of light irradiation can be suppressed.

  Thus, according to the illuminating device 2 which concerns on this Embodiment, the fall of the working efficiency at the time of an assembly can be suppressed, and generation | occurrence | production of the shadow at the time of light irradiation can be suppressed.

(Other)
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 and modification, the connection between the power supply pin 32 and the lead wire 50 has been described, but the present invention is not limited to this. For example, the present invention can be applied to grounding on the non-power supply side. That is, the present invention can also be applied to a lead wire that connects the non-power supply base 40 and the LED module 10.

  Specifically, a through hole may be provided in the base body 41 of the non-power feeding base 40. Then, the lead wire that has passed through the through hole may be connected to the non-feed pin 42 outside the base body 41. At this time, one end of the lead wire is connected to the non-feeding pin 42, and the other end is connected to the metal wiring for grounding the substrate 11.

  Moreover, although the electric power supply pin 32 was provided in the outer side of the nozzle | cap | die main body 31, and showed the example which is not protruded inside in the said embodiment and modification, it does not restrict to this. The power supply pin 32 may penetrate the base body 31.

  In the above-described embodiment and modification, the example in which the lead wire 50 is connected by the flat plate portion 36 of the power supply pin 32 has been described, but the present invention is not limited thereto. For example, the power supply pin 32 may not include the flat plate portion 36, that is, the lead wire 50 may be connected to the L-shaped portion 35 of the power supply pin 32.

  In the above-described embodiment and modification, the lead wire 50 is shown as being soldered to the power supply pin 32, but the present invention is not limited to this. For example, the lead wire 50 may be connected to the power supply pin 32 using a conductive adhesive. The lead wire 50 may be connector-connected to the power supply pin 32 or a connection terminal electrically connected to the power supply pin 32.

  Moreover, in the said embodiment and modification, although the through-hole 33 and the through-hole 34 showed about the example which is circular in cross section, it is not restricted to this. The cross sections of the through hole 33 and the through hole 34 may be rectangular.

  In the above embodiment, the case where the LED module is an SMD type LED module using a packaged LED element has been described. However, the present invention is not limited to this. The LED module 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) arranged in the housing may be arranged in series or in parallel. In this case, metal wiring provided on each substrate may be connected via the connection terminal.

  Moreover, a housing | casing may be comprised by the elongate translucent cover which covers an LED module, and a base, for example. In this case, the LED module is placed on a base, for example. That is, the housing does not have to be an integral housing, and may be a housing that can be divided into a plurality of parts, such as a housing made of a translucent cover and a base.

  Moreover, although the said embodiment demonstrated the example in which a housing | casing and a nozzle | cap | die are cylinders, it is not restricted to this. For example, the casing and the base may be a rectangular tube having a rectangular bottom and opening.

  In the above embodiment, the base body is an example of a cylinder having a substantially uniform outer diameter and inner diameter, but is not limited thereto. For example, at least one of the outer diameter and the inner diameter of the base body may be non-uniform.

  Moreover, the edge part of a housing | casing may cover a nozzle | cap | die. That is, the outer diameter of the base may be smaller than the inner diameter of the end portion of the casing.

  Further, for example, in the above-described embodiment, a single-side power feeding method that feeds power to all LEDs in the housing from only one side of the power feeding base is adopted. However, both the bases on both sides use a G13 base and an L-shaped base. You may employ | adopt the both-sides electric power feeding system, such as. In this case, the power supply pin on one side and the power supply pin on the other side may be configured as one pin. Alternatively, the power supply pin on one side and the power supply pin on the other side may receive power from both sides as a pair of power supply pins. Further, the pair of power supply pins or non-power supply pins is not limited to a rod-shaped metal, and may be configured by a flat metal or the like.

  Furthermore, from the aspect of the power feeding method, the straight tube LED lamp according to the present invention includes, for example, the following variations. That is, one-sided feeding method composed of an L-shaped base on one side and a base having a non-feeding pin on the other side, a two-sided feeding method composed of an L-shaped base on both sides, These include a double-sided power feeding system configured with a G13 base and a one-sided power feeding system configured with a G13 base.

  In addition, the straight tube LED lamp according to the above embodiment is a system that receives DC power from an external power supply, but receives AC power from an external power supply by incorporating a power supply circuit (AC-DC converter circuit). It may be a method.

  In the above embodiment, the LED module 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, a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with this and a blue LED chip to emit white light. Moreover, you may use the LED chip which light-emits colors other than blue, for example, using the ultraviolet LED chip which emits the ultraviolet light which is shorter wavelength than the blue light which a blue LED chip emits, mainly by ultraviolet light You may comprise so that white light may be discharge | released by the blue fluorescent substance particle which is excited, and discharge | releases blue light, red light, and green light, green fluorescent substance particle, and red fluorescent substance particle.

  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 addition, it is realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, and forms obtained by making various modifications conceived by those skilled in the art to each embodiment. Forms are also included in the present invention.

1 Straight tube LED lamp (light source for illumination)
2 Illuminating device 10 LED module 11 Substrate 12 LED element 20 Housing 30, 30a Feed base 31, 31a, 41 Base body 32, 32a Feed pin (base pin)
33, 33a, 33b Through hole (first through hole)
34 Through hole (second through hole)
35, 35a L-shaped portion 36, 36a Flat plate portion 40 Non-feeding base 42 Non-feeding pin 50 Lead wire 60 Adhesive 70, 81 Solder 80 Soldering iron 200 Lighting fixture 210 Receipt 220 Appliance body

Claims (8)

A long substrate on which a light emitting element is arranged;
A long casing in which the substrate is disposed;
A base provided at an end in a longitudinal direction of the housing;
A lead wire for electrically connecting the substrate and the base;
The base is
A bottomed cylindrical base body provided with a first through hole;
A base pin fixed to the base body so as to be exposed to the outside of the base body;
The substrate is arranged such that an end portion thereof protrudes from the casing,
The lead wire is inserted into the first through hole,
One end of the lead wire is connected to the base pin outside the base body ,
The other end of the lead wire is an illumination light source connected to an end portion of the substrate protruding from the housing . The base pin is provided with a second through hole,
The illumination light source according to claim 1, wherein the lead wire is further inserted into the second through hole and connected to the cap pin. The illumination light source according to claim 2, wherein the first through hole and the second through hole are continuous in a through direction. The light source for illumination according to any one of claims 1 to 3, wherein the base pin is fixed so as to protrude only outward from an outer surface of the base body. 5. The taper hole according to claim 1, wherein at least a portion of the first through hole has an opening exposed inside the base body, and a tip direction is a direction from the inside to the outside of the base body. The light source for illumination according to item 1. The illumination light source according to claim 1, wherein the lead wire is connected to the base pin by soldering.   The housing is a cylinder,
  The substrate and the base body are each fixed to the casing with an adhesive.
  The light source for illumination according to any one of claims 1 to 6. Illumination device comprises an illumination light source according to any one of claims 1-7.

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