CN203586134U - Light source for lighting and lighting device - Google Patents

Abstract

The utility model provides a light source for illumination, which can improve the insulation between a charging part on a substrate and a metal base. The light source for illumination comprises a strip-shaped housing (20), a strip-shaped first base (50) and a second base (60) made of metal accommodated in the housing (20), and disposed on the second base. 2 The substrate (11) on the base (60), the LED (12) arranged on the substrate (11), at the position overlapping the edge of the substrate (11) in the second base (60) , a first cutout portion (61) and a second cutout portion (62) formed by cutting out a part of the second base (60) are provided.

Description

Light source for lighting and lighting device

technical field

The utility model relates to a light source for lighting and a lighting device, in particular to a straight-tube LED lamp using a light emitting diode (LED: Light Emitting Diode).

Background technique

LED is highly efficient and has a long life, so it is expected to be a new light source in various lamps such as conventionally known fluorescent lamps and incandescent bulbs, and research and development of lamps (LED lamps) using LEDs are underway.

As an LED lamp, there is a straight-tube LED lamp (straight-tube LED lamp) instead of a straight-tube fluorescent lamp having electrode coils at both ends, or a bulb-shaped LED lamp (bulb-shaped LED lamp) instead of a bulb-shaped fluorescent lamp or an incandescent bulb. LED light), etc. For example, Patent Document 1 discloses a conventional straight-tube LED lamp.

Patent Document 1: Japanese Unexamined Patent Publication No. 2009-043447

Straight tube LED lamps include, for example, a long translucent case (straight tube, etc.), a pair of lamp caps provided at both ends of the translucent case in the longitudinal direction, and a metal base covered by the translucent case. , an LED module disposed on a metal base, a lighting circuit for lighting the LED module, and the like.

An LED module includes, for example, a substrate, a plurality of LEDs mounted on the substrate, metal wiring patterned on the substrate, connection terminals (connectors) provided on the substrate, and the like.

The substrate (module substrate) of the LED module is arranged on the metal base. In this case, when an excessive potential difference occurs between the charging portion (LED, metal wiring, connection terminal, etc.) on the substrate and the metal base, creeping discharge occurs to cause dielectric breakdown of the substrate.

Utility model content

The present invention is made to solve the above-mentioned problems, and an object of the present invention is to provide a light source for lighting and a lighting device capable of improving the insulation between a charging part on a substrate and a metal base.

In order to achieve the above object, one aspect of the light source for illumination of the present invention is characterized in that it comprises: a long light-transmitting casing; a long metal base covered by the light-transmitting casing; a substrate disposed on on the metal base; and a light-emitting element disposed on the above-mentioned substrate, and a cutout portion formed by cutting out a part of the metal base is provided at a position overlapping with an edge of the above-mentioned substrate in the metal base .

Moreover, in one aspect of the light source for illumination of this invention, the said board|substrate is arrange|positioned plurally adjacently, and the said notch part may be provided in the position which overlaps with the boundary part of the adjacent said board|substrate.

Moreover, in one aspect of the light source for illumination of this invention, the said notch part may be provided in the vicinity of the said light emitting element.

Furthermore, in an aspect of the light source for illumination of the present invention, a connection terminal provided on the substrate and electrically connected to the light emitting element may be further provided, and the notch may be provided near the connection terminal.

In addition, in an aspect of the light source for illumination of the present invention, it may be further provided with a lighting circuit for causing the light-emitting element to emit light, and the lighting circuit has a circuit board arranged adjacent to the board, and a circuit board mounted on the circuit board. In the circuit element, the cutout portion is provided at a position overlapping a boundary portion between the substrate and the circuit substrate.

Moreover, in one aspect of the light source for illumination of this invention, the said notch part may be the through-hole which penetrates the said metal base.

Moreover, in one aspect of the light source for illumination which concerns on this invention, the said notch part may be notched so that it may recede from the edge edge of the said metal base, and may be formed.

Moreover, in one aspect of the light source for illumination of this invention, the said translucent case may be a long cylindrical case, and the said metal base may be accommodated in the said case.

Moreover, one aspect of the illuminating device of this invention is equipped with any one of the light sources for illumination mentioned above, It is characterized by the above-mentioned.

The effect of utility model

According to the present invention, the insulation between the charging portion on the substrate and the metal base can be improved.

Description of drawings

Fig. 1 is an overview perspective view of a straight tube LED lamp according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the straight tube LED lamp according to the embodiment of the present invention.

Fig. 3 is an exploded top view of the straight tube LED lamp according to the embodiment of the present invention.

Fig. 4 is a perspective view of the LED module according to the embodiment of the present invention.

5A is a perspective view showing the peripheral structure of the base for power feeding in the straight tube type LED lamp according to the embodiment of the present invention (the state where the first base main body for power feeding is detached).

Fig. 5B is an exploded perspective view showing the peripheral structure of the base for power supply in the straight tube type LED lamp according to the embodiment of the present invention.

Fig. 6A is a perspective view showing a peripheral configuration of a base for non-power supply in the straight tube type LED lamp according to the embodiment of the present invention.

6B is a perspective view of the base for non-power feeding in the straight tube type LED lamp according to the embodiment of the present invention (the state where the first base body for non-power feeding is detached).

Fig. 7 is a partially enlarged side view of the straight tube LED lamp according to the embodiment of the present invention.

Fig. 8A is a cross-sectional view of the straight tube LED lamp according to the embodiment of the present invention at the line AA' of Fig. 7 .

Fig. 8B is a cross-sectional view of the straight tube LED lamp according to the embodiment of the present invention at the line BB' in Fig. 7 .

Fig. 8C is a cross-sectional view of the straight tube LED lamp according to the embodiment of the present invention at line CC' of Fig. 7 .

Fig. 9 is an enlarged perspective view of main parts of the straight tube LED lamp according to the embodiment of the present invention.

Fig. 10 is an overview perspective view of the lighting device according to the embodiment of the present invention.

Fig. 11 is a diagram showing a configuration of a modified example of the first base in the straight tube type lamp according to the embodiment of the present invention.

Fig. 12 is a perspective view showing a configuration of a modified example of the LED module in the straight tube lamp according to the embodiment of the present invention.

Explanation of reference signs

1 straight tube LED light

2 Lighting device

10, 10A LED module

11 Substrate

12 LEDs

12A LED components

12a package

12b LED chip

12c, 13 Sealing parts

14 Connecting terminals

20 shell

30 Lamp holders for power supply

31 Lamp holder body for power supply

31a The main body part of the lamp holder for the first power supply

31b The main body part of the lamp cap for the second power supply

32 power supply pin

33 wires

34, 44 screw

35 Convex

40 Lamp holders for non-power supply

41 The main body of the lamp holder for non-power supply

41a The main body of the first non-power supply lamp holder

41b The main part of the second non-power supply lamp holder

42 non-power supply pin

43 Connection parts

50 pedestal 1

51 1st wall

51a 1st protrusion

51b, 61, 71a 1st incision

52 Second wall

52a 2nd protrusion

52b, 62, 72a 2nd incision

53, 73 Bottom face

53a 1st bottom surface

53b 2nd bottom face

54 fixed part

55 force department

56, 57 protrusions

58 Convex

60 Second base

63 3rd incision

70 reflective parts

71 1st reflective wall

72 The second reflective wall

74, 75 through hole

80 lighting circuit

81 circuit substrate

82 circuit components

83 input socket

84 output socket

85 circuit housing

90 connector wire

91 Installation Department

92 Power supply line

100 lighting fixtures

110 socket

120 Appliance body

Detailed ways

Hereinafter, a light source for illumination and a lighting device according to an embodiment of the present invention will be described with reference to the drawings. In addition, embodiment described below shows a preferable specific example of this invention. Therefore, numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, and sequence of steps shown in the following embodiments are examples, and are not meant to limit the present invention. Therefore, among the constituent elements of the following embodiments, the constituent elements not described in the independent claims showing the highest concept of the present invention are described as arbitrary constituent elements.

In addition, each drawing is a schematic diagram, and is not necessarily strictly illustrated. In addition, in each figure, the same code|symbol is attached|subjected to the same component.

In the following embodiments, a straight tube type LED lamp will be described as an example of a light source for illumination.

[The overall structure of the lamp]

First, the structure of the straight tube type LED lamp 1 which concerns on embodiment of this invention is demonstrated using FIGS. 1-3. FIG. 1 is an overview perspective view of a straight tube LED lamp according to this embodiment. Fig. 2 is an exploded perspective view of the straight tube LED lamp of the present embodiment. Fig. 3 is an exploded plan view of the straight tube LED lamp of this embodiment.

The straight-tube LED lamp 1 of the present embodiment is a straight-tube LED lamp that replaces a conventional straight-tube fluorescent lamp, and is, for example, a 40-shaped straight-tube LED lamp having the same overall length as a straight-tube 40-shaped fluorescent lamp.

As shown in FIG. 1 , a straight-tube LED lamp 1 includes: an LED module 10 , a strip-shaped casing 20 for accommodating the LED module 10 , a A power supply cap (power supply side cap) 30 as a first cap provided at an end, and a non-power supply cap (non-power supply side cap) 40 as a second cap provided at the other end in the longitudinal direction of the housing 20 .

As shown in FIG. 2 , the straight tube LED lamp 1 further includes a heat sink (the first base 50 and the second base 60 ) on which the LED module 10 is arranged, and reflects the light emitted by the LED module 10 in a predetermined direction. The reflecting member 70 for lighting the LED module 10 , the lighting circuit 80 for lighting the LED module 10 , and the connector wire 90 for electrically connecting the components in the housing 20 . In addition, in the straight tube type LED lamp 1 of the present embodiment, the one-side power supply method in which the LED module 10 receives power supply only from one side of the base 30 for power supply is adopted.

Hereinafter, each component of the straight tube type LED lamp 1 will be described in detail with reference to FIG. 2 and FIG. 3 .

[LED Module]

As shown in FIGS. 2 and 3 , the LED modules 10 are elongated, and a plurality of them are arranged along the tube axis direction of the casing 20 . The plurality of LED modules 10 are adjacently arranged such that their longitudinal direction is the longitudinal direction of the case 20 . Specifically, the board|substrate 11 of the LED module 10 is arrange|positioned adjacently on the 2nd base 60. As shown in FIG. In addition, in this embodiment, four LED modules 10 (four substrates 11 ) are used.

Here, the detailed structure of each LED module 10 is demonstrated using FIG. 4. FIG. Fig. 4 is a perspective view of the LED module of this embodiment.

As shown in FIG. 4, the LED module 10 is a COB (Chip On Board: chip on board) type light-emitting module in which the LED chip is directly mounted on the substrate, and has a substrate 11, a plurality of LEDs (bare chips) 12, and The sealing member 13 which seals LED12, and the connection terminal 14 which receives the supply of the electric power for causing LED12 to emit light from the exterior of an LED module.

The board|substrate 11 is a mounting board|substrate (insulation board|substrate) for mounting LED12. In the present embodiment, a rectangular substrate elongated in the tube axis direction of the case 20 is used as the substrate 11 . The surface on which LED12 is mounted of the board|substrate 11 is a 1st main surface (front surface), and the surface opposite to this 1st main surface is a 2nd main surface (back surface). LED12 is mounted only on the 1st main surface of the board|substrate 11, and LED12 is not mounted on the 2nd main surface. In addition, as will be described later, the LED module 10 is placed on the second submount 60 such that the second main surface of the substrate 11 is in contact with the placement surface of the second submount 60 .

As the substrate 11 , a ceramic substrate made of alumina and/or aluminum nitride, a resin substrate made of resin, a metal-based substrate made of metal such as aluminum alloy, or a glass substrate made of glass can be used. As the resin substrate, for example, a glass epoxy substrate (CEM-3, FR-4, etc.) composed of glass fiber and epoxy resin, a substrate composed of paper phenol and/or paper epoxy resin (FR-1, etc.) can be used , or a flexible flexible substrate made of polyimide or the like. As the metal base substrate, for example, an aluminum alloy substrate, an iron alloy substrate, or a copper alloy substrate can be used.

Furthermore, if the length of the substrate 11 in the longitudinal direction (length of the long side) is L1 (mm) and the length of the substrate 11 in the short direction (length of the short side) is L2 (mm), then L1 = 100 mm to 600mm, L2 = 10mm ~ 40mm. In addition, the board|substrate 11 in this embodiment uses what L1=280mm, L2=15mm, and thickness 1.0mm.

LED12 is an example of a light emitting element, and is a semiconductor light emitting element that emits light with predetermined electric power. As shown in FIG. 4 , on the substrate 11 , a plurality of LEDs 12 are arranged in a line along the longitudinal direction of the substrate 11 . Each LED 12 is a bare chip emitting monochromatic visible light, and is die-bonded (die-bonded) to the substrate 11 via a die-contact material (die bonding material). For the plurality of LEDs 12 on the substrate 11, members with the same characteristics are used, for example, blue LED chips that emit blue light when energized. As the blue LED chip, it is possible to use a gallium nitride-based semiconductor light-emitting element made of, for example, an InGaN-based material and having a central wavelength of 440 nm to 470 nm.

Each LED 12 can be configured to be connected in series, in parallel, or a combination of series and parallel connections through metal wiring (not shown) or gold wires (not shown) formed on the substrate 11 .

The sealing member 13 is a phosphor-containing resin containing a phosphor as a light wavelength converter, and is a wavelength conversion member that converts (color converts) the wavelength of light from the LED 12 into a predetermined wavelength, and protects the LED 12 by sealing the LED 12 resin. Protect parts. In the present embodiment, the sealing member 13 is made of an insulating resin material containing phosphor particles as a wavelength converter. The phosphor particles in the sealing member 13 are excited by the light emitted from the LED 12 to emit light of a desired color (wavelength).

And the sealing member 13 is formed in linear form so that the some LED12 arrange|positioned in a row may be collectively sealed. In this embodiment, all LED12 is sealed together. Thus, since the sealing member 13 does not seal each LED12 but seals some LED12 collectively, white light can also be emitted from the sealing member 13 between adjacent LED12. Thereby, the phenomenon that the luminance becomes high only in the upper part of LED12 can be suppressed, and a bright spot (graininess) can be reduced.

As the sealing member 13 , for example, when the LED 12 is a blue LED, a phosphor-containing resin in which YAG (yttrium aluminum garnet)-based yellow phosphor particles are dispersed in a resin material such as silicone resin can be used to obtain white light. Thus, the yellow phosphor particles are excited by the blue light of the blue LED chip to emit yellow light, so the yellow light excited from the sealing member 13 and the blue light of the blue LED chip are diffused and mixed in the sealing member 13, Thus, white light is emitted from the sealing member 13 .

In the present embodiment, the sealing member 13 is made of a phosphor-containing resin in which predetermined phosphor particles are dispersed in a silicone resin, and can be formed by coating the surface of the substrate 11 with a dispenser. In this case, the shape of the sealing member 13 in a cross section perpendicular to the longitudinal direction of the sealing member 13 is a dome-shaped cross-sectional shape or a substantially semicircular shape. In addition, the sealing member 13 may contain a light-diffusing material such as silica. In addition, in order to improve color rendering, phosphor particles that emit fluorescence other than yellow, such as red phosphor particles, may be contained as needed.

The connection terminal 14 is an external connection terminal (connector) that receives DC power for causing the LED 12 to emit light, and is electrically connected to the LED 12 . The connection terminals 14 are provided at predetermined positions on the substrate 11 . In this embodiment, the connection terminals 14 are provided near the long sides of the substrate 11 on both ends in the longitudinal direction of the substrate 11 , and the two connection terminals 14 are located close to the length of one side of the substrate 11 based on the sealing member 13 . side.

Furthermore, the connection terminal 14 in this embodiment is configured as a socket type, and has a resin socket and a conductive pin for receiving DC power. The conductive pins are electrically connected to metal wiring formed on the substrate 11 . In addition, by attaching the attachment portion 91 of the connector wire 90 to the connection terminal 14 (receptacle), the connection terminal 14 is in a state capable of receiving power supply from the connector wire 90 . In addition, as the connection terminal 14 , not a resin socket but a metal wiring (metal electrode) patterned in a rectangular land shape can also be used.

In addition, although not shown, metal wiring is formed on the first main surface of the substrate 11 . The metal wiring is pattern-formed in a predetermined shape on the substrate 11 to electrically connect the LEDs 12 to each other or to connect the LEDs 12 to the connection terminals 14 . Moreover, in order to protect LED12, you may mount a protection element (zener diode) on the 1st main surface of the board|substrate 11. Furthermore, in order to improve the heat dissipation of the LED module 10 , a metal film or metal pattern for heat dissipation may be formed on the second main surface of the substrate 11 . Furthermore, in order to improve the insulating properties of the substrate 11 , an insulating film such as a white resist may be formed on the first main surface and the second main surface of the substrate 11 .

[case]

The case 20 is an example of an elongated translucent case, and is configured to cover the first base 50 and the second base 60 on which the LED module 10 is arranged. The housing 20 in the present embodiment is a straight tube having light transmissibility, and is a long cylindrical outer member (outer tube) having openings at both ends as shown in FIG. 2 . The housing 20 accommodates the LED module 10 , the first base 50 , the second base 60 , the lighting circuit 80 , and the like. In this embodiment, a cylindrical member is used for the housing 20 , but the cylindrical shape is not necessarily required, and a square cylindrical member may be used.

The housing 20 can be made of a translucent material, and a glass tube (glass shade) made of glass, a plastic tube made of resin, or the like can be used. For example, as the housing 20 , a glass tube made of soda lime glass having a silica (SiO ₂ ) of 70 to 72 [%], or a plastic tube made of a resin material such as polycarbonate can be used. In the present embodiment, as the case 20 , the same glass tube (total length: about 1167 mm) as that used for the straight tube 40-type fluorescent lamp is used.

In addition, a light diffusing portion having a light diffusing function for diffusing light from the LED module 10 may be provided in the housing 20 . Thereby, the light radiated from the LED module can be diffused when passing through the housing 20 . As a light-diffusion part, there exists a light-diffusion sheet, a light-diffusion film, etc. formed in the inner surface or the outer surface of the housing|casing 20, for example. Specifically, a milky-white light-diffusing film can be formed by adhering a resin containing a light-diffusing material (fine particles) such as silica and calcium carbonate, and/or a white pigment to the inner or outer surface of the housing 20 . As other light diffusing parts, there are lens structures provided inside or outside the housing 20 , or concave or convex parts formed in the housing 20 . For example, by printing a dot pattern on the inner or outer surface of the housing 20 or processing a part of the housing 20 , the housing 20 can also be provided with a light diffusing function (light diffusing portion). Alternatively, the case 20 can also be provided with a light-diffusing function (light-diffusing portion) by molding the case 20 itself using a resin material in which a light-diffusing material is dispersed, or the like.

[Lamp holder for power supply]

The power supply base (first base) 30 is a power receiving base that receives electric power for causing the LED 12 to emit light from the outside of the lamp, and supplies power to the LED module 10 . Furthermore, the base 30 for electric power feeding is locked to the socket of a lighting fixture, and is comprised so that an LED lamp may be supported. The base 30 for power feeding has a substantially cylindrical shape with a bottom, and is provided so as to cover one side of the case 20 in the longitudinal direction. The power supply base 30 in this embodiment is composed of a resin power supply base body 31 and a pair of power supply pins 32 as shown in FIG. 2 . The resin power supply base body 31 is made of polybutylene terephthalate. (PBT) or other synthetic resin, and the pair of power supply pins 32 are made of a metal material such as brass.

In addition, the base 30 for electric power feeding in this embodiment is comprised so that it can be divided into several along the axial direction of the base 30 for electric power supply. Specifically, the cap main body 31 for power supply is configured so that it can be decomposed into upper and lower halves by using a plane passing through the tube axis of the casing 20 as a dividing plane, and is composed of a first cap main body portion 31a for power supply and a second cap main body portion for power supply. 31b consists of these two components.

The pair of power supply pins 32 are pins for supplying electric power to the LED module 10 . Moreover, the power supply pin 32 is a power receiving pin which receives the electric power for lighting the LED12 of the LED module 10 from the external equipment, such as a lighting fixture. The pair of power supply pins 32 are configured to protrude outward from the bottom of the base body 31 for power supply. The power supply pin 32 is locked to the socket of the lighting fixture.

For example, by attaching the power supply base 30 to a socket of a lighting fixture, the pair of power supply pins 32 can obtain DC power from a power supply device (power supply circuit) built in the lighting fixture. The pair of power supply pins 32 are electrically connected to the lighting circuit 80 inside the casing 20 through the wire 33 , and the DC power received by the pair of power supply pins 32 is supplied to the lighting circuit 80 .

In addition, the power supply unit may be built in the straight tube type LED lamp 1 instead of being installed in a lighting fixture outside the lamp. In this case, the pair of power supply pins 32 receives AC power from, for example, a commercial 100V AC power supply and supplies it to the power supply device, and the AC power is converted into DC power by the power supply device.

Here, the peripheral structure of the base 30 for electric power feeding is demonstrated using FIG. 5A and FIG. 5B. Fig. 5A is a perspective view showing the peripheral structure of the base for power feeding in the straight tube type LED lamp of this embodiment, showing a state where the first base body part 31a for power feeding is detached. Fig. 5B is an exploded perspective view showing the peripheral structure of the cap for power feeding. In addition, the casing 20 is not shown in FIG. 5B .

As shown in FIGS. 5A and 5B , one end of the wire 33 is electrically and physically connected to the power supply pin 32 , and the other end of the wire 33 is electrically and physically connected to the lighting circuit 80 (output socket 84 ) by, for example, solder. , and the lighting circuit 80 is disposed on the second base 60 . Next, by attaching the circuit case 85 to the first wall portion 51 and the second wall portion 52 of the first base 50 , the lighting circuit 80 is covered with the circuit case 85 . After that, the first power feeding cap body 31a is fitted into the second power feeding cap body 31b after the power feeding pin 32 is attached to the groove of the second power feeding cap body 31b where the second base 60 is disposed. Thereafter, the first cap body portion 31 a for power feeding and the second cap body portion 31 b for power feeding are screwed and fixed with screws 34 . Accordingly, it is possible to attach the power supply cap 30 to one end portion of the case 20 in a state where the second base 60 is fixed to the power supply cap 30 .

In addition, as shown in FIGS. 5A and 5B , a pair of screen-shaped protrusions 35 are provided on the base main body 31 for power feeding (the second base main body part 31 b for power feeding). The pair of convex portions 35 are guide portions for guiding the lead wire 33 . That is, when the lead wire 33 is disposed in the lamp cap main body 31 for power supply, the pair of protrusions 35 are guided so as to limit the position of the wire winding (Japanese: 引き回し) of the lead wire 33 so that the lead wire 33 is not caught in the power supply. The joint portion of the cap body 31 (the connection portion between the first cap body portion 31 a for power feeding and the second cap body portion 31 b for power feeding) and the resin portion around the screw 34 . Specifically, the lead wire 33 is connected to the power supply pin 32 around the outer sides of the two convex portions 35 so as to be bent toward the side surface of the power supply base body 31 in the vicinity of the two convex portions 35 . As a result, the lead wire 33 is positioned outside the two protrusions 35, so when the first power supply cap main body 31a and the second power supply cap main body 31b are fitted to assemble the power supply cap main body 31, it is possible to avoid The lead wire 33 protrudes from the cap main body 31 for power feeding, and is sandwiched between the cap main body part 31a for power feeding and the cap main body part 31b for 2nd power feeding, or is wound around the screw 34 (screw hole). Thereby, it is possible to prevent the lead wire 33 from being disconnected or to prevent a gap from being generated in the base body 31 for power feeding.

[Lamp caps not for power supply]

The base 40 for non-power supply is locked to a socket of a lighting fixture, and is configured to support an LED lamp. The base 40 for non-power supply is configured in a substantially cylindrical shape with a bottom, and is provided so as to cover the other end portion of the case 20 in the longitudinal direction. The non-power supply lamp cap 40 in this embodiment is composed of a non-power supply lamp cap main body 41 and a non-power supply pin 42 as shown in FIG. Made of metal materials such as brass.

In addition, the base 40 for non-power feeding in this embodiment is comprised so that it can be divided into several along the axial direction of the base 40 for power feeding similarly to the base 30 for power feeding. Specifically, the base body 41 for non-power supply is configured such that the plane passing through the tube axis of the casing 20 can be decomposed into upper and lower halves, and the first base body part 41a for non-power supply and the second base body part 41a for non-power supply are formed. The cap main body 41b is composed of two members.

The non-power supply pin 42 is configured to protrude outward from the bottom of the base body 41 for non-power supply. The non-power supply pin 42 is locked to the socket of the lighting fixture.

Here, the peripheral configuration of the base 40 for non-power feeding will be described using FIGS. 6A and 6B . Fig. 6A is a perspective view showing a peripheral configuration of a base for non-power feeding in the straight tube type LED lamp of the present embodiment. FIG. 6B is a perspective view of the base for non-power supply, showing a state where the first base body part 41a for non-power supply is detached.

As shown in FIGS. 6A and 6B , after attaching the non-power supply pin 42 to the second base 60 through the L-shaped metal connection member 43 , it is disposed on the first base 50 via the reflection member 70 . The second base 60, and the non-power supply pin 42 is attached to the groove of the second non-power supply base body part 41b. Next, the first base body part 41a for non-power feeding is fitted into the second base body part 41b for non-power feeding. Thereafter, the first base body part 41 a for non-power supply and the second base body part 41 b for non-power supply are screwed and fixed with screws 44 . Thereby, the base 40 for non-power supply can be attached to the end part of the case 20 in the state which fixed the 2nd base 60 to the base 40 for non-power supply.

In addition, the base 40 for non-power supply may be provided with a grounding function, and the base 40 for non-power supply may be used as the base for grounding. In this case, the non-power supply pin 42 functions as a ground pin that is grounded via the lighting fixture, and is ground-connected to the metal second base 60 . Thereby, the second base 60 is grounded via the non-feeding pin 42 and the connection member 43 .

[base]

Both the first base 50 and the second base 60 are made of metal, function as a heat sink for dissipating heat generated by the LED module 10 , and serve as a base for placing and fixing the LED module 10 . It works by fixing the parts.

＜Plinth 1＞

As shown in FIG. 2 , the first base 50 is an elongated metal base extending in the longitudinal direction of the housing 20 and constitutes the outer shell of the heat sink. The first base 50 is formed by deforming a metal plate, for example, by bending or the like. In the present embodiment, the first base 50 is formed using a thin plate-shaped galvanized steel sheet.

The first base 50 has a long bottom portion 53 extending in the longitudinal direction of the housing 20 , and a first wall extending from the bottom portion 53 in a screen shape and extending in the longitudinal direction of the housing 20 . part 51 and the second wall part 52. In the present embodiment, the angle formed by the bottom surface portion 53 , the first wall portion 51 and the second wall portion 52 is approximately 90° in a cross-sectional view of the first base 50 .

The first wall portion 51 and the second wall portion 52 are provided at both ends of the bottom surface portion 53 in the short-side direction of the first base 50 (the width direction of the substrate 11 ) so as to sandwich the substrate 11 from the short-side direction. The substrate 11 of the LED module 10 is constructed in such a manner. That is, the first wall portion 51 faces one side surface of the substrate 11 , and the second wall portion 52 faces the other side surface of the substrate 11 . In this way, the substrate 11 of the LED module 10 is sandwiched between the first wall portion 51 and the second wall portion 52 .

In addition, a plurality of first protrusions 51 a protruding from the first wall 51 toward the second wall 52 are formed on the first wall 51 . Similarly, a plurality of second protrusions 52 a protruding from the second wall 52 toward the first wall 51 are formed on the second wall 52 . The first protruding portion 51 a and the second protruding portion 52 a are formed to fix the substrate 11 to the first base 50 and the second base 60 as described later.

Furthermore, the first base 50 has a first notch 51b formed in the vicinity of the first protrusion 51a, and a second notch 52b formed in the vicinity of the second protrusion 52a. In the present embodiment, the first notch portion 51 b is notched so as to straddle the first wall portion 51 and the bottom portion 53 (first bottom portion 53 a ), and is formed in a slit shape along the longitudinal direction of the first base 50 . . Similarly, the second notch portion 52 b is notched so as to straddle the second wall portion 52 and the bottom portion (first bottom portion 53 a ), and is formed in a slit shape along the longitudinal direction of the first base 50 . The first notch portion 51 b and the second notch portion 52 b are formed to facilitate press-fitting the LED module 10 (substrate 11 ) into the first base 50 .

The bottom surface 53 is bent so as to have a stepped portion, and has a first bottom surface 53 a supporting the second base 60 and the substrate 11 , and a second bottom surface 53 b provided with the fixing portion 54 .

The fixing portion 54 is formed to fix the first base 50 and the housing 20 as will be described later. As shown in FIG. 3 , three fixing portions 54 are provided in this embodiment. That is, the first base 50 and the casing 20 are fixed at three places.

In addition, a biasing portion 55 is formed on the second bottom surface portion 53 b of the first base 50 . The biasing portion 55 is configured to come into contact with the reflective member 70 to apply pressure to the reflective member 70 (second base 60 ). The urging part 55 is formed so that the LED module 10 may be sandwiched between the urging part 55 and the 1st protrusion part 51a and the 2nd protrusion part 52a as mentioned later. As shown in FIG. 3 , in this embodiment, eight biasing parts 55 are provided on the first base 50 .

In addition, a pair of protrusions 56 protruding toward the substrate 11 side from the first bottom surface portion 53 a are formed on the first base 50 . The pair of protrusions 56 are restricting portions that restrict movement of the second base 60 in the width direction. That is, by arranging the second base 60 between the pair of protrusions 56, the movement of the second base 60 in the width direction is restricted. As shown in FIG. 3 , in the present embodiment, a pair of protrusions 56 are provided at both ends in the longitudinal direction of the first base 50 . The protrusion 56 is formed by processing a part of the metal plate constituting the first base 50 . In addition, the pair of protrusions 56 are inserted into the pair of through holes 74 of the reflection member 70 . Thereby, the movement of the reflection member 70 can also be restricted.

In addition, a pair of protrusions 57 for positioning the second base 60 are formed on the first base 50 . As shown in FIGS. 6A and 6B , the pair of protrusions 57 are engaged with the third notch 63 of the second base 60 . Thus, the relative positions of the first base 50 and the second base 60 are determined. Furthermore, the movement of the second base 60 in the longitudinal direction can also be restricted by the protrusion 57 . As shown in FIG. 3 , a pair of protrusions 57 are provided at one end in the longitudinal direction of the first base 50 . The protruding portion 57 is formed by cutting out a part of the metal plate constituting the first base 50 . In addition, the pair of protrusions 57 are inserted into the pair of through holes 75 of the reflection member 70 . Thereby, positioning of the reflection member 70 can also be performed.

Moreover, as shown in FIG. 2 and FIG. 3 , a convex portion 58 for attaching the circuit case 85 to the first base 50 is formed on the first base 50 . The convex portion 58 is formed to project outward on each of the first wall portion 51 and the second wall portion 52 . In the present embodiment, the first wall portion 51 and the second wall portion 52 are partially deformed by cutting and protruding, thereby constituting the convex portion 58 .

＜Second Base＞

The second base 60 is a mid-plate heat sink arranged between the first base 50 and the LED module 10 . As shown in FIGS. 2 and 3 , like the first base 50 , the second base 60 is an elongated metal base extending in the longitudinal direction of the casing 20 . The second base 60 is preferably made of a high thermal conductivity material such as metal, and is an aluminum plate in this embodiment. The plate thickness of the second base 60 is configured to be larger than the plate thickness of the first base 50 . In addition, the second base 60 is configured to be longer than the first base 50 . That is, both ends of the second base 60 are respectively covered with the cap for power feeding 30 or the cap for non-power feeding 40 , and the second base 60 is attached to the cap for power feeding 30 and the cap for non-power feeding 40 as described above.

In addition, a first notch 61 and a second notch 62 are provided on the second base 60 . The first notch 61 and the second notch 62 are formed by notching a part of the second base 60 . In addition, the first notch portion 61 and the second notch portion 62 are provided at positions overlapping the edge of the substrate 11 of the LED module 10 .

As shown in FIG. 3 , the first notch portion 61 is provided at a position overlapping the boundary portion (boundary line) of the substrate 11 adjacently arranged on the second susceptor 60 . That is, the first notch 61 is formed to cover the boundary of the substrate 11 . In this embodiment, the 1st notch part 61 is provided in the vicinity of the LED12 which exists in the position closest to the 2nd base 60 among the LED12 in each LED module 10. As shown in FIG. In addition, as shown in FIG. 5B , the first notch portion 61 may be provided at a position overlapping the boundary portion between the adjacent circuit board 81 and the substrate 11 .

The first notch 61 in the present embodiment is a through hole penetrating the second base 60 , and is a track-shaped opening extending in the longitudinal direction of the second base 60 in plan view.

The second cutout portion 62 is provided near the connection terminal 14 of the LED module 10 . More specifically, the second cutout portion 62 is located below the connection terminal 14 and is formed by cutting away from the long edge of the second base 60 toward the inside of the base. Moreover, in this embodiment, the 2nd notch part 62 is formed so that it may recede inward from both long side edge.

In addition, the second base 60 is provided with a third notch 63 for locking the pair of protrusions 57 . The third notch portion 63 is formed by notching a part of the second base 60 . In the present embodiment, the third notch portion 63 is formed so as to recede from both long side edges toward the inside. Furthermore, the third notch 63 is provided at one end in the longitudinal direction of the second base 60 so as to correspond to the pair of protrusions 57 .

[Reflective parts]

The reflection member 70 is configured to reflect light emitted from the LED module 10 (LED 12 ) in a predetermined direction in order to improve the light extraction efficiency of the lamp. The reflective member 70 is made of an electrically insulating and light reflective material, and can be formed, for example, by bending an insulating reflective sheet made of a biaxially stretched polyester (PET) film or the like.

As shown in FIG. 2 , the reflective member 70 is processed into a U-shaped cross section and is composed of a first reflective wall portion 71 , a second reflective wall portion 72 , and a bottom portion 73 . The first reflective wall portion 71 , the second reflective wall portion 72 , and the bottom portion 73 are respectively extended along the longitudinal direction of the first base 50 . Light from the LED module 10 is reflected by the inner surfaces of the first reflective wall portion 71 and the second reflective wall portion 72 .

Furthermore, the first reflective wall portion 71 has a first notch portion 71 a provided at a position corresponding to the first protruding portion 51 a of the first wall portion 51 in the first base 50 . Similarly, the second reflective wall portion 72 has a second notch portion 72 a provided at a position corresponding to the second protruding portion 52 a of the second wall portion 52 in the first base 50 .

The first notch portion 71a and the second notch portion 72a are formed to avoid collision with the first protruding portion 51a and the second protruding portion 52a of the first base 50 so that the first reflective wall portion 71 and the second reflective wall portion The upper edge of 72 is notched facing downward. Accordingly, when the reflecting member 70 is placed on the first base 50 , the first protrusion 51 a and the second protrusion 52 a of the first base 50 protrude from the first reflection wall 71 and the second reflection wall 72 .

In addition, a pair of through-holes 74 are provided at both ends in the longitudinal direction of the reflection member 70 . The protrusion 56 of the first base 50 is inserted into the through hole 74 . Furthermore, a pair of through-holes 75 are provided at one end in the longitudinal direction of the reflection member 70 . The protrusion 57 of the first base 50 is inserted into the through hole 75 .

[Lighting circuit]

The lighting circuit 80 is an LED lighting circuit for controlling the lighting state of the LED 12 in the LED module 10 , and rectifies and outputs an input direct current in the present embodiment. As shown in FIG. 2 , the lighting circuit 80 includes a circuit board 81 and a plurality of circuit elements 82 mounted on the circuit board 81 .

The circuit board 81 is a printed board on which a predetermined wiring pattern (not shown) is formed for electrically connecting the mounted circuit elements 82 to each other, and for example, a glass epoxy board or the like can be used.

The circuit element 82 is an electronic component for turning on the LED 12 of the LED module 10 , and is, for example, a diode bridge circuit (rectification circuit) for full-wave rectifying input DC power, a fuse element, and the like. As the circuit element 82, resistors, capacitors, coils, diodes, transistors, and the like may be provided according to other needs.

In addition, the lighting circuit 80 includes an input socket 83 (input unit) that receives DC power from a pair of power supply pins 32 provided on the power supply cap 30 , and an output socket 84 (output unit) that outputs DC power to the LED module 10 . An input connector terminal electrically connected to a pair of power supply pins 32 via a wire 33 is inserted into the input socket 83 . In addition, an output connector terminal electrically connected to the LED module 10 via a wire (connector wire 90 ) is inserted into the output socket 84 . In addition, the input socket 83 and the output socket 84 are electrically connected to predetermined circuit elements 82 through wiring patterns formed on the circuit board 81 .

The lighting circuit 80 configured in this way is arranged on the first base 50 and is covered with a circuit case 85 . In the present embodiment, the lighting circuit 80 (circuit board 81 ) is placed on the second base 60 placed on the first base 50 . The circuit case 85 is made of insulating resin, protects the lighting circuit 80 and ensures insulation from other components. The circuit case 85 is formed with a locking hole that is locked by the protrusion 58 of the first base 50. As shown in FIGS. The circuit case 85 can be fixed to the first base 50 in the locking hole.

In addition, the lighting circuit 80 (circuit board 81 ) may be placed on the substrate 11 of the LED module 10 instead of on the second base 60 . In this case, what is necessary is just to increase the length of the board|substrate 11 by the amount by which the lighting circuit 80 is mounted. In addition, instead of using the circuit board 81 , the circuit board 11 of the LED module 10 may be used as a circuit board, and the circuit element 82 may be directly mounted on the board 11 . In this case, it is only necessary to provide the input socket 83 on the substrate 11, electrically connect the power supply pin 32 and the input socket 83 through the wire 33, and electrically connect the input socket 83 and the circuit element 82 through the wiring pattern on the substrate 11. Moreover, by forming a wiring pattern on the board|substrate 11, the output (rectified DC power) from the circuit element 82 can be supplied to LED12.

[connector wire]

The connector wire 90 electrically and physically connects adjacent LED modules 10 , and electrically and physically connects the LED modules 10 and the lighting circuit 80 .

As shown in FIG. 2 , the connector wire 90 has a pair of mounting parts (connector parts) 91 mounted on the connection terminal 14 of the LED module 10, and a conductive wire electrically connecting the pair of mounting parts 91, that is, for using The power supply line 92 passes through which the power supplied to the LED module 10 passes.

The mounting portion 91 is provided at both ends of the power supply line 92, and is composed of a substantially rectangular resin molded portion configured to fit into the connection terminal (socket) 14 of the LED module 10, and a socket provided on the resin molded portion. The conductive part is formed. In addition, the power supply line 92 can be comprised by the lead wire which covered the metal wire called a harness with resin. In the present embodiment, the connector wire 90 is configured to allow direct current power to pass through, and the power supply line 92 includes a positive voltage supply line for supplying a positive voltage and a negative voltage supply line for supplying a negative voltage.

In this embodiment, four strip-shaped LED modules 10 are arranged in the housing 20 , so four connector wires 90 are used. Specifically, one connector wire 90 for connecting the connection terminal 14 of the LED module 10 arranged on the power supply base 30 side to the output socket 84 of the lighting circuit 80 and the connection terminal for connecting the adjacent LED module 10 are used. 14 3 connector lines 90 connected to each other. Thus, DC power is supplied from the lighting circuit 80 to the LED module 10 via the connector wire 90 , and power is supplied from one LED module 10 to the other LED module 10 .

Regarding each connector wire 90, before being attached to the connection terminal 14, the shape of the power supply wire 92 is formed into a predetermined shape in advance so that the position of the power supply wire 92 relative to the substrate 11 (the height in the vertical direction of the main surface of the substrate 11 position) becomes a certainty. Specifically, power supply line 92 is deformed so as to be bent or bent in a direction horizontal to the first main surface of substrate 11 , and is not deformed in a direction perpendicular to the first main surface of substrate 11 . Thereby, deterioration of the light distribution characteristic due to the shadow of the connector wire 90 (power supply wire 92 ) can be suppressed. In addition, the power supply line 92 of each connector line 90 may be fixed to the substrate 11 by silicone resin or double-sided adhesive tape.

[Positional relationship of each component]

Next, the positional relationship among the LED module 10 , the first base 50 , the second base 60 , and the reflective member 70 when housed in the case 20 will be described in detail using FIGS. 7 , 8A, 8B, and 8C. and connection relationships. Fig. 7 is a partial enlarged side view of the straight tube LED lamp of this embodiment. Fig. 8A is a cross-sectional view of the straight tube LED lamp at the line AA' of Fig. 7, Fig. 8B is a cross-sectional view of the straight tube LED lamp at the line BB' of Fig. 7, and Fig. 8C is a cross-sectional view of the straight tube LED lamp at the line AA' of Fig. 7 A cross-sectional view of the straight tube LED lamp at the line CC'.

As shown in FIGS. 8A to 8C , the first protruding portion 51 a and the second protruding portion 52 a in the first base 50 are configured to be in contact with the first main surface side of the substrate 11 in the LED module 10 . Specifically, the first protruding portion 51 a and the second protruding portion 52 a are formed as locking claws that are locked on the first main surface side of the substrate 11 . Accordingly, movement of the substrate 11 in the LED module 10 in a direction perpendicular to the first main surface of the substrate 11 is restricted. That is, the LED module 10 is fixed to the first base 50 by the first protruding portion 51 a and the second protruding portion 52 a so as not to jump out (Japanese: 飞び出す) in the vertical direction of the substrate 11 .

With this configuration, even after the straight tube LED lamp 1 is mounted on a lighting fixture (that is, even if the LED module 10 is located on the ground side compared to the first base 50 ), the LED module 10 will It does not fall off from the 1st base 50 by the 1st protrusion part 51a and the 2nd protrusion part 52a. In this way, since the substrate 11 is pressed by the first protruding portion 51a and the second protruding portion 52a, the LED module 10 can be easily fixed to the first base 50 without using screws, adhesives, or the like. In addition, since the LED module 10 (substrate 11 ) can be fixed to the first base 50 by pressing the LED module 10 (substrate 11 ) into the first base 50 , it is possible to easily connect the LED module 10 and the first base 50 . Assemble.

The first protruding portion 51 a and the second protruding portion 52 a are formed by processing a part of the metal plate constituting the first base 50 . For example, it can form by embossing the 1st wall part 51 and the 2nd wall part 52 which consist of a metal plate, and protruding a part of a metal plate. Thereby, the LED module 10 can be fixed to the 1st base 50 with a simple structure, without using another component.

Furthermore, in the first protruding portion 51a and the second protruding portion 52a, in order to prevent the substrate 11 from falling off the first base 50 due to vibration or impact, etc., the substrate 11 on the first protruding portion 51a or the second protruding portion 52a The shape of the first main surface side is substantially flat so as to face the first main surface. On the other hand, the shape of the first protruding portion 51a or the second protruding portion 52a on the side opposite to the first main surface side is substantially tapered so that the base plate 11 is brought into contact with the first protruding portion 51a or the second protruding portion 52a. When the ground is inserted, it is easy to press the substrate 11 into the first protruding portion 51 a or the second protruding portion 52 a.

Furthermore, as shown in FIGS. 8A to 8C , on the bottom surface 53 of the first base 50 , a stepped portion is formed by a first bottom surface 53 a and a second bottom surface 53 b. This stepped portion forms a space region between the bottom surface portion 53 (second bottom surface portion 53 b ) of the first base 50 and the reflection member 70 , and the biasing portion 55 is provided using this space region.

The urging portion 55 is formed by processing a part of the metal plate constituting the first base 50 , and is configured as a leaf spring formed by cutting out the plate-shaped first bottom surface portion 53 a of the first base 50 . The urging part 55 configured in this way is configured to be in contact with the reflective member 70 , and presses the reflective member 70 (second base 60 ) by the urging force of the elastic force of the plate spring.

That is, the biasing portion 55 is configured to face the second main surface of the substrate 11 in the LED module 10 (that is, in the direction from the second main surface of the substrate 11 to the first main surface), and to face the first base. 50, the second base 60 and the reflecting member 70 apply force.

In this way, the substrate 11 of the LED module 10 is urged by the urging portion 55 , and pressed by the elastic force of the urging portion 55 . Thereby, the board|substrate 11 is clamped by the 1st protrusion part 51a, the 2nd protrusion part 52a, and the urging part 55 in the pressed state. That is, since the substrate 11 is pressed from both sides of the first main surface and the second main surface, the substrate 11 can be firmly held by the first susceptor 50 . In addition, since the biasing portion 55 is formed by processing a part of the first base 50 , it is possible to improve the holding performance of the substrate 11 with a simple configuration.

In addition, in this embodiment, as shown in FIG. 8C , the first notch 51b is formed near the first protrusion 51a, and the second notch 52b is formed near the second protrusion 52a. Thereby, when fixing the board|substrate 11 to the 1st base 50, it becomes easy to elastically deform the peripheral part of the 1st protrusion part 51a and the 2nd protrusion part 52a. Accordingly, the substrate 11 can be easily fitted into the first protrusion 51 a and the second protrusion 52 a of the first base 50 , and the substrate 11 can be easily fixed to the first base 50 .

Furthermore, as shown in FIGS. 7 and 8A , the fixing portion 54 is configured by deforming a part of the bottom portion 53 (second bottom portion 53 b ) of the first base 50 so as to protrude toward the inner surface of the housing 20 . An adhesive for adhering and fixing the fixing portion 54 and the housing 20 is filled between the fixing portion 54 of the first base 50 and the inner surface of the housing 20 . In this manner, the first base 50 can be fixed to the housing 20 by adhering the fixing portion 54 to the inner surface of the housing 20 with an adhesive. In addition, as an adhesive, for example, a silicone resin can be used.

As shown in FIGS. 8A to 8C , the second base 60 is sandwiched between the LED module 10 and the first base 50 , and the LED module 10 (substrate 11 ) is placed on the second base 60 . By fixing the LED module 10 to the first base 50 , the second base 60 is also fixed to the first base 50 .

In addition, the second base 60 is mounted on the first bottom surface portion 53a of the first base 50 via the reflective member 70, and the surface (back surface) of the second base 60 on the side of the first base 50 interposes the reflective member. 70 and is urged by the elastic force (urging force) of the urging portion 55 in the first base 50 .

In addition, the second submount 60 is arranged between the LED module 10 (substrate 11 ) and the first submount 50 in contact with the substrate 11 . Thereby, the heat generated by LED12 can be efficiently transmitted to the 2nd base 60 via the board|substrate 11. As shown in FIG.

Thus, in the present embodiment, the first base 50 made of an easy-to-work thin steel plate and the second base 60 made of aluminum with high thermal conductivity are used as the heat sink. Thereby, while fixing the LED module 10 etc. can be performed easily, the heat sink with favorable heat dissipation property can be realizable.

In addition, as shown in FIGS. 8A to 8C , the first reflective wall portion (first reflective surface portion) 71 and the second reflective wall portion (second reflective surface portion) 72 of the reflective member 70 are formed on the bottom portion of the first base 50 . 53 is formed at both ends in the short direction (width direction of the substrate 11 ), and is configured to sandwich the substrate 11 of the LED module 10 from the short direction of the substrate 11 . That is, the first reflective wall portion 71 faces one side surface of the substrate 11 , and the second reflective wall portion 72 faces the other side surface of the substrate 11 .

The first reflective wall portion 71 is located inside the first wall portion 51 of the first base 50 , and in this embodiment, the outer surface of the first reflective wall portion 71 is in surface contact with the inner surface of the first wall portion 51 . On the other hand, the second reflective wall portion 72 is located inside the second wall portion 52 of the first base 50 . The inner surface makes surface contact.

In addition, the reflection member 70 (bottom surface 73 ) is placed on the first bottom surface 53 a of the first base 50 , and the second base 60 and the substrate 11 are placed on the reflection member 70 (bottom surface 73 ). That is, the reflection member 70 is arranged between the first base 50 and the second base 60 . The bottom surface portion 73 of the reflection member 70 is biased by the elastic force of the biasing portion 55 of the first base 50 .

In addition, as shown in FIG. 7 , the height of the first wall portion 51 and the second wall portion 52 in the first base 50 and the height of the first reflective wall portion 71 and the second reflective wall portion 72 in the reflective member 70 are assumed to be equal to each other. They are substantially the same, but in this embodiment, since the heights of the first wall portion and the second wall portion 52 are constant, it is preferable to increase the height of the first wall portion 51 and the second wall portion 52 . By doing so, the shape of the portion that blocks light from the LED module 10 can be straightened (that is, the edges of the shadows generated by the first wall portion 51 and the second wall portion 52 can be straightened), so that a good color can be realized. Light distribution characteristics.

(characteristic constitution of the present utility model)

Next, the characteristic structure and operation effect of the straight tube type LED lamp 1 which concerns on this embodiment are demonstrated using FIG. 9. FIG. Fig. 9 is an enlarged perspective view of main parts of the straight tube type LED lamp of the present embodiment. In addition, although the adjacent part of the adjacent LED module 10 was shown in FIG. 9, one LED module 10 is not shown in figure.

The LED module 10 (substrate 11 ) is arranged on the second base 60 made of metal. In this case, if an excessive potential difference occurs between the charging portion (LED 12 , connection terminal 14 , metal wiring, etc.) on the substrate 11 and the second base 60 , a current will flow through the insulating surface and terminals of the substrate 11 . This is due to the fact that it flows locally from the charging portion on the substrate 11 to the second susceptor 60 . That is, creeping discharge occurs to cause dielectric breakdown of the substrate 11 . Also, in the lighting circuit 80 , when the circuit board 81 is placed on the second base 60 , if the charging part (circuit element 82 , metal wiring, etc.) on the circuit board 81 and the second base 60 If there is an excessive potential difference between them, creeping discharge may occur.

In particular, when a plurality of LED modules 10 (substrates 11 ) are arranged on the second base 60 , even if adjacent substrates 11 are arranged in contact with each other, gaps exist between adjacent substrates 11 . Therefore, due to the existence of the gap, the insulation distance between the charging portion on the substrate 11 and the second susceptor 60 is shortened, and creeping discharge occurs through the boundary portion of the adjacent substrate 11 . In addition, creeping discharge also occurs through the gap between the circuit board 81 and the substrate 11 .

Therefore, in this embodiment, as shown in FIG. 9 , a first notch 61 and a second notch 62 are provided at positions overlapping the edge of the substrate 11 of the LED module 10 in the second base 60 . .

In particular, the second base 60 is provided with a first notch 61 as a through hole at a position overlapping with a boundary portion of the adjacently arranged substrate 11 . And this 1st notch part 61 is provided in the vicinity of LED12 (LED12 mounted at the edge of the board|substrate 11) which exists in the position closest to the 2nd base 60. As shown in FIG. Thus, compared with the case where the first notch portion 61 is not provided, the insulation distance from the charging portion of the LED module 10 (especially the LED 12 mounted at the end of the substrate 11 ) to the second base 60 can be increased ( surface distance). Accordingly, occurrence of creeping discharge between the charging portion of the LED module 10 and the second base 60 can be suppressed.

In addition, in the second base 60 , a second notch 62 is provided at a position corresponding to the vicinity of the connection terminal 14 of the LED module 10 . Thereby, compared with the case where the 2nd notch part 62 is not provided, the insulation distance from the charging part (especially the connection terminal 14) of the LED module 10 to the 2nd base 60 can be lengthened. Accordingly, occurrence of creeping discharge between the charging portion of the LED module 10 and the second base 60 can be suppressed.

Furthermore, in the present embodiment, the second notch portion 62 is notched so as to recede from the long edge of the second base 60 toward the inside of the base. Accordingly, it is possible to effectively suppress the creeping discharge that occurs from the long side of the substrate 11 and enters the second susceptor 60 .

In addition, as shown in FIG. 5B , the first notch portion 61 may be provided at a position overlapping the boundary portion between the circuit board 81 and the substrate 11 . Thereby, the insulation distance from the charging part (circuit element 82 etc.) of the lighting circuit 80 to the 2nd base 60 can be lengthened compared with the case where the 1st notch part 61 is not provided. Accordingly, occurrence of creeping discharge between the charging portion of the lighting circuit 80 and the second base 60 can be suppressed.

As described above, according to the straight tube type LED lamp 1 in the present embodiment, the second base 60 is provided with a notch (the first notch) at a position overlapping the edge of the substrate 11 in the second base 60 . 61, the second notch part 62). Thereby, the generation|occurrence|production of creeping discharge between the charging part (LED12, the connection terminal 14, metal wiring, etc.) of the LED module 10 and the 2nd base 60 can be suppressed. Therefore, the insulation of the straight tube type LED lamp 1 can be improved.

(lighting device)

Next, the illuminating device 2 which concerns on embodiment of this invention is demonstrated using FIG. 10. FIG. Fig. 10 is an overview perspective view of the lighting device according to the present embodiment.

As shown in FIG. 10 , the lighting device 2 of this embodiment is a base light, and includes a straight tube LED lamp 1 and a lighting fixture 100.

As the straight tube type LED lamp 1 shown in FIG. 10, the straight tube type LED lamp 1 in the said embodiment is used as a light source for illumination. In addition, in this embodiment, as shown in FIG. 10, two straight tube type LED lamps 1 are used.

The lighting fixture 100 is electrically connected to the straight tube LED lamp 1 , and includes a pair of sockets 110 holding the straight tube LED lamp 1 , and a fixture body 120 to which the sockets 110 are attached. The tool body 120 can be formed, for example, by pressing an aluminum steel sheet or the like. In addition, the inner surface of the instrument main body 120 is a reflection surface which reflects the light emitted from the straight tube type LED lamp 1 in a predetermined direction (for example, downward).

The lighting fixture 100 configured in this way is attached to, for example, a ceiling or the like via a fixture. In addition, a power supply circuit and the like for controlling the lighting of the straight tube type LED lamp 1 are incorporated in the lighting fixture 100 . In addition, a translucent housing member may be provided so as to cover the straight-tube LED lamp 1 .

As described above, the straight tube type LED lamp 1 of this embodiment can be realized as a lighting device or the like.

(Modifications, etc.)

As mentioned above, although the light source for illumination and the illumination device which concerns on this invention were demonstrated based on embodiment, this invention is not limited to said embodiment.

For example, in the above-described embodiment, the first notch portion 61 is a through hole, but the present invention is not limited thereto. As the first notch portion 61 , a notch portion having a structure in which the second base 60 is moved back from the edge may be used like the second notch portion 62 .

In addition, in the above-mentioned embodiment, the second notch portion 62 is a notch portion having a structure in which the second base 60 is moved back from the edge, but the present invention is not limited thereto. For example, the second notch 62 may be a through hole like the first notch 61 .

In addition, the shape of the notch part (1st notch part 61, the 2nd notch part 62) is not limited to the shape of the said embodiment. For example, the plan view shape of the through hole may be rectangular, circular, or the like. In addition, the shape of the structure in which the end portion is opened is not limited to the rectangular shape, and may be a part of a circle or an ellipse.

In addition, in the above-described embodiment, only one first notch portion 61 and second notch portion 62 are provided at corresponding locations, but a plurality of notch structures may be provided. For example, the first notch part 61 may be made into a plurality of slits, and the second notch part 62 may be made into comb teeth.

In addition, in the above embodiment, the positions where the notches (first notches 61 , second notches 62 ) are provided are not limited to the vicinity of the LED 12 , the connection terminal 14 , or the circuit element 82 as long as they are in the vicinity of the charging unit. For example, notches may be provided in the vicinity of metal wiring patterned on the substrate 11 or the circuit substrate 81 , or circuit components (protection elements) on the substrate 11 .

In addition, in the above-mentioned embodiment, the heights of the first wall portion 51 and the second wall portion 52 in the first base 50 are constant, but the present invention is not limited thereto. For example, as shown in FIG. 11 , the heights of the first wall portion 51 and the second wall portion 52 may be lower in the vicinity of the connection terminal 14 than in other portions. Accordingly, it is possible to suppress the occurrence of creeping discharge between the connection terminal 14 and the first base 50 . In this case, the height difference between the first wall portion 51 and the second wall portion 52 repeats, and the shadows produced by the shapes of the upper edges of the first wall portion 51 and the second wall portion 52 appear concave and convex. Therefore, it is preferable that As shown in the figure, the heights of the first reflective wall portion 71 and the second reflective wall portion 72 in the reflective member 70 are made higher than the heights of the first wall portion 51 and the second wall portion 52 . Furthermore, it is preferable that when the heights of the first wall portion 51 and the second wall portion 52 are lowered in the vicinity of the connection terminal 14, as shown in this figure, the first wall portion 51 and the second wall portion The height of the wall 52 gradually becomes lower, and the heights of the first wall portion 51 and the second wall portion 52 are changed smoothly. Thus, even if the heights of the first wall portion 51 and the second wall portion 52 of the first base 50 are higher than the heights of the first reflective wall portion 71 and the second reflective wall portion 72 of the reflective member 70, it is possible to The shape of the portion that blocks light from the LED module 10 is a smooth line. Thereby, favorable light distribution characteristics can be realized.

In addition, in the above-mentioned embodiment, although the LED module has a COB type structure in which the LED chip is directly mounted on the board|substrate, it is not limited to this. For example, as shown in FIG. 12 , an SMD-type LED module 10A may be used. The SMD-type LED module 10A is configured by mounting an LED chip in a concave portion of a resin package (container) 12 a. (light-emitting element) 12b, and a packaged LED element (SMD-type LED element) 12A in which a sealing member (phosphor-containing resin) 12c is sealed in the concave portion, and a plurality of these are mounted on a substrate 11 on which metal wiring is formed. LED element 12A.

In addition, in the above-mentioned embodiment, the casing 20 has a non-divided cylindrical structure, but it may also be made into a divided type. For example, one elongated cylindrical case (peripheral) can be constituted by a translucent case and a base. In this case, a substantially semi-cylindrical translucent resin case can be used as the light-transmitting case covering the LED module 10 , and a semi-cylindrical metal base having a fin structure can be used as the base. Since the metal base is configured such that the surface opposite to the surface on which the LED module 10 is placed is exposed, heat from the LED module 10 can be directly dissipated from the metal base to the outside of the lamp. In addition, instead of a metal base, a resin base made of resin may be used as the base.

In addition, in the above-mentioned embodiment, the straight tube type LED lamp 1 adopts a single-side feeding method that receives power from only one side of the power feeding base 30 , but it may also use a double-side feeding method that receives power from both sides. In this case, what is necessary is just to provide the base 30 for power supply instead of the base 40 for non-power supply.

In addition, in the above-mentioned embodiment, the base 30 for power feeding and the base 40 for non-power feeding are made into split type bases which are divided into two, but they may be non-divided type bases which are not divided.

In addition, in the above-mentioned embodiment, at least one of the inner peripheral surface of the base body 31 for power supply and the base body 41 for non-power supply may be formed to abut against the end edge in the longitudinal direction of the casing 20 along the circumferential direction. Ring-shaped protrusions (ribs). Thereby, the movement of the casing 20 in the tube axis direction can be restricted. In addition, the intrusion of insects, dust, and moisture into the housing 20 can be suppressed, and deterioration of the appearance due to wiring short circuit, deterioration of electronic components in the housing 20, and dead remains of insects can be prevented.

In addition, in the above-mentioned embodiment, the LED module 10 is configured to emit white light through the blue LED chip and the yellow phosphor, but the present invention is not limited thereto. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with a blue LED chip to emit white light. In addition, as the LED chip, an LED chip emitting a color other than blue may be used. For example, in the case of using an LED chip that emits ultraviolet light, a structure in which phosphor particles of each color that emit light in three primary colors (red, green, and blue) are combined can be used as phosphor particles. Furthermore, wavelength conversion members other than phosphor particles can be used. For example, as wavelength conversion members, semiconductors, metal complexes, organic dyes, pigments, etc. that absorb light of a certain wavelength and emit and absorb light can be used. The material of the matter of light of different wavelengths.

In addition, in the above-mentioned embodiment, an LED was exemplified as a light-emitting element, but a semiconductor light-emitting element such as a semiconductor laser, or a light-emitting element such as an organic EL (Electro Luminescence) or an inorganic EL may also be used.

In addition, forms obtained by implementing various modifications conceived by those skilled in the art to each embodiment, and forms obtained by arbitrarily combining components and functions in each embodiment without departing from the gist of the present invention. Embodiments realized are also included in the present invention.

Industrial Applicability

The present invention is useful for lighting light sources using light-emitting elements such as LEDs, particularly straight-tube LED lamps, and can be widely used in lighting devices and the like.

Claims (9)

1. A light source for lighting, comprising: Elongated light-transmitting shell; The strip-shaped metal base is covered by the above-mentioned light-transmitting shell; a substrate disposed on the metal base; and a light emitting element disposed on the above-mentioned substrate, A notch portion formed by notching a part of the metal base is provided at a position overlapping the edge of the substrate in the metal base. 2. The light source for illumination as claimed in claim 1, A plurality of the substrates are adjacently arranged, The notch portion is provided at a position overlapping with a boundary portion of the adjacent substrates. 3. The light source for illumination as claimed in claim 1, The cutout portion is provided near the light emitting element. 4. The light source for illumination as claimed in claim 1, further comprising a connecting terminal provided on the above-mentioned substrate and electrically connected to the above-mentioned light-emitting element, The cutout portion is provided near the connection terminal. 5. The light source for illumination as claimed in claim 1, further comprising a lighting circuit for making the light-emitting element emit light, The lighting circuit has a circuit board disposed adjacent to the board, and circuit elements mounted on the circuit board, The notch is provided at a position overlapping a boundary portion between the substrate and the circuit substrate. 6. The light source for illumination according to any one of claims 1 to 5, The notch portion is a through hole penetrating the metal base. 7. The light source for illumination according to any one of claims 1 to 5, The notch portion is formed by notching so as to recede from the edge of the metal base. 8. The light source for illumination according to any one of claims 1 to 5, The above-mentioned light-transmitting shell is a long cylindrical shell, The metal base is housed in the casing. 9. A lighting device, comprising: A light source for illumination according to any one of claims 1 to 8.

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