JP2012146468A - Lamp and lighting system - Google Patents

Abstract

An object of the present invention is to provide a lamp that can be easily attached to an existing lighting fixture and has excellent reliability.
An LED lamp, which is an example of a lamp, includes a base, a LED module that is a light emitting module attached to the base, and a socket that is attached to a socket to fix the LED lamp to a lighting fixture. A base 70 as a unit, a connection unit 40 that is directly connected to an AC power source and receives power from the AC power source, and a drive unit 50 that lights the LED module 20 using the power received by the connection unit 40. The base 70 and the connecting portion 40 are provided at different positions.
[Selection] Figure 1

Description

  The present invention relates to a lamp using a semiconductor light emitting element such as an LED (Light Emitting Diode) and an illumination device including the lamp, and more particularly to a straight tube LED lamp and an illumination device.

  In recent years, semiconductor light emitting devices such as light emitting diode (LED) devices have been used in various lamps as highly efficient and space-saving light sources. Specifically, it is used for various lamps as an LED module in which an LED element is mounted on a substrate and sealed with resin.

  Examples of LED lamps using such LED modules include straight tube type LED lamps (straight tube type LED lamps), ring type LED lamps (ring type LED lamps), and light bulb type LED lamps ( Bulb type LED lamp). For example, Patent Document 1 discloses a conventional straight tube type LED lamp.

JP 2009-43447 A

  The inventors of the present application have also studied various types of straight tube type LEDs. For example, straight tube LEDs as shown in FIGS. 9A and 9B have been studied. Fig.9 (a) is sectional drawing which shows an example of straight tube | pipe type LED. FIG. 9B is a cross-sectional view of a straight tube LED obtained by cutting FIG. 9A along the line B-B ′.

  As shown in FIGS. 9A and 9B, the straight tube type LED lamp 100 that the inventors of the present application are studying includes a straight tube 110 made of a long glass tube, and a straight tube 110. A plurality of line-shaped LED modules 120 provided inside and a pair of caps 150a and 150b provided at both ends of the straight pipe 110 are provided. The LED module 120 includes a long plate-shaped mounting substrate 121, a plurality of LED elements 122 mounted on the mounting substrate 121, and a sealing member 123 that seals the plurality of LED elements 122. Yes.

  In the LED lamp 100 having the above configuration, in order to light the LED element 122, it is necessary to receive DC power from the outside. Therefore, the LED lamp 100, for example, similarly to a conventional straight tube fluorescent lamp, inserts the caps 150a and 150b into the socket of the lighting fixture to fix the LED lamp 100 to the lighting fixture, and the LED element 122 through the cap 150a. It can comprise so that the electric power for making it light may be received.

  On the other hand, the conventional luminaire supplies power from an AC power source (typically an AC 100 V commercial power source; hereinafter the same) 160 to a socket via a ballast 170. That is, when the LED lamp 100 having the above configuration is to be attached to a conventional lighting fixture, the ballast 170 is bypassed, the AC power supply 160 and the socket are connected, and a conversion circuit for converting AC to DC is attached. Must be done.

  However, the ballast 170 installed in the conventional lighting fixture has a wide variety such as a start circuit such as a glow starter, a lighting circuit, an inverter, and the like, and a construction method for attaching the LED lamp 100 differs depending on the type. . Moreover, since there is little empty space inside the lighting fixture, it is extremely difficult to perform the above construction.

  Furthermore, if the base 150a serving as a connection terminal for receiving power also has a function of fixing the LED lamp 100 to the lighting fixture, there is a possibility that a contact failure or the like due to looseness of the base 150a or the like may occur. This is particularly noticeable when an LED element having a very long life as compared with a fluorescent lamp is used.

  Therefore, the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a lamp that can be easily attached to an existing lighting fixture and has excellent reliability.

  A lamp according to an embodiment of the present invention is attached to a lighting fixture that has a socket for holding the lamp and supplying power from an AC power source to the lamp. Specifically, a base, a light emitting module attached to the base, a fixing part attached to the socket and fixing the lamp to the lighting fixture, and a direct connection to the AC power source, the AC A connection unit that receives power from a power source and a drive unit that lights the light emitting module using the power received by the connection unit. And the said fixing | fixed part and the said connection part are provided in the different position.

  For existing lighting fixtures, it is extremely easy to carry out the work to connect the AC power supply and the connection part directly, regardless of what circuit is installed between the AC power supply and the socket. Can do. As a result, it becomes extremely easy to attach the lamp having the above configuration to an existing lighting fixture.

  Also, by arranging the fixed part and the connection part at different positions, for example, compared to the case where the base has two functions of the fixed part and the connection part, it is possible to effectively prevent contact failure and the like. can do.

  Furthermore, the lamp may comprise a straight tube. And the said straight pipe accommodates the said base in an inside, and the said fixing | fixed part may be attached to the both ends of a longitudinal direction. However, the present invention is not limited to a straight tube type lamp, but can be applied to other types of lamps such as an annular type.

  The light emitting module may be attached to a surface on one side of the base. And the said connection part is a surface of the other side of the said base, and may be attached to the longitudinal direction center part. Thereby, the cable length extended from AC power supply can be shortened.

  The fixing part may be made of metal and contact the base. This further improves the heat dissipation characteristics of the lamp.

  The drive unit may include a rectifier circuit that converts alternating current received by the connection unit into direct current. Thus, by providing the drive unit on the lamp side, only the durability corresponding to the life of the lamp needs to be given to the drive unit. As a result, as compared with the case where the drive unit is provided on the luminaire side, there is no need for additional construction accompanying the deterioration of the drive unit.

  A lighting device according to an aspect of the present invention includes the lamp described above, an AC power source that supplies power to the connection portion, and a lighting fixture that includes a socket that receives the fixing portion. Thereby, the illuminating device which used the existing lighting fixture effectively can be obtained.

  According to the present invention, it is an object to provide a lamp that is easy to attach to an existing lighting fixture and is excellent in reliability.

It is an external appearance perspective view which shows schematic structure of the LED lamp which concerns on embodiment of this invention. It is a longitudinal cross-sectional view which shows the internal structure of the LED lamp which concerns on embodiment of this invention. FIG. 3 is an enlarged cross-sectional view of FIG. 2 taken along the line III-III ′. It is a figure which shows an example of the circuit structure of the drive part which concerns on embodiment of this invention. It is an external appearance perspective view which shows schematic structure of the illuminating device which concerns on embodiment of this invention. It is a figure which shows schematic structure of the LED lamp which concerns on the modification 1 of this invention. It is a perspective view which shows schematic structure of the LED module which concerns on the modification 2 of this invention. It is a figure which shows schematic structure of the LED lamp which concerns on the modification 3 of this invention. It is a figure which shows an example of straight tube | pipe type LED. It is a figure which shows an example of the circuit structure of the conventional lighting fixture.

  Hereinafter, LED lamps and lighting devices according to embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
First, with reference to Fig.1 (a) and FIG.1 (b), the LED lamp 1 which concerns on embodiment of this invention is demonstrated. FIG. 1A and FIG. 1B are diagrams showing a schematic configuration of the LED lamp 1 according to the present embodiment, and are external perspective views in which a part on the light emitting side is cut away (FIG. 1A). ) And an external perspective view (FIG. 1B) in which a part of the non-light emitting side (the back side of FIG.

  As shown in FIG. 1A, an LED lamp 1 according to the present embodiment is a straight tube type LED lamp that is substantially the same shape as a straight tube fluorescent lamp, and includes a long tubular straight tube 10 and a plurality of straight tube types. LED module 20, a base 30 on which a plurality of LED modules 20 are placed, and a pair of caps 70 attached to both ends of the straight pipe 10. Moreover, as shown in FIG.1 (b), the LED lamp 1 is LED on the back side of the base 30 using the connection part 40 which receives alternating current power from the outside, and the electric power received by the connection part 40. A driving unit 50 for lighting the module 20 and a substrate (driving circuit mounting substrate) 60 on which the driving unit 50 is mounted are provided.

  Next, each component of the LED lamp 1 shown in FIGS. 1 (a) and 1 (b) will be described in detail with reference to FIGS. FIG. 2 is a side sectional view taken along a plane passing through the tube axis of the straight pipe 10 and perpendicular to the base 30. FIG. 3 is an enlarged cross-sectional view of the LED lamp 1 taken along the line III-III ′ of FIG. FIG. 4 is a diagram illustrating an example of a circuit configuration of the drive unit 50 according to the present embodiment.

  As shown in FIGS. 2 and 3, the straight pipe 10 is a long cylindrical body having openings at both ends, and has a circular cross-sectional shape. The straight tube 10 can be formed of a glass tube or a plastic tube.

  The straight tube 10 according to the present embodiment is composed of, for example, a glass tube having a Young's modulus of 70000 [MPa]. Specifically, it is composed of soda-lime glass containing 70 to 72 [%] silica (SiO2). The straight pipe 10 has the same dimensional standard as that of the straight pipe before sealing both ends used for manufacturing a fluorescent lamp specified in JIS (Japanese Industrial Standard). For example, a glass tube having a length of 1198 [mm], an outer diameter of 30 [mm], and a thickness of 0.7 [mm] can be used.

  Moreover, it is preferable that the outer surface or inner surface of the straight pipe 10 is subjected to diffusion treatment. For example, silica, calcium carbonate, or the like may be applied to the inner surface of the straight tube 10 such as a glass tube. Thereby, the light emitted from the LED module 20 can be diffused.

  Furthermore, the opening part 11 which exposes the connection part 40 is provided in the position which faces the connection part 40 of the straight pipe 10. The opening 11 according to the present embodiment is provided in the longitudinal center of the straight pipe 10. As a result, it is possible to connect the cable extending from the AC power supply (not shown) to the connecting portion 40.

  The LED module 20 is a line-shaped light emitting module, and is a long plate-shaped mounting substrate (LED mounting substrate) 21, a plurality of LED elements 22 mounted on the mounting substrate 21, and a plurality of LED elements 22. And a sealing member 23 for sealing.

  As the mounting substrate 21, a highly transparent ceramic substrate such as aluminum nitride or alumina, a resin substrate, a glass substrate, or the like can be used. The mounting substrate 21 is sized to be housed inside the straight pipe 10. That is, the width and thickness of the mounting substrate 21 are smaller than the inner diameter of the straight pipe 10. Further, the length of the mounting substrate 21 is shorter than the length of the straight pipe 10. In the present embodiment, a long ceramic substrate having a long side (length in the longitudinal direction) of 140 [mm], a short side (length in the short direction) of 7 [mm], and a thickness of 1 [mm]. Was used as the mounting substrate 21.

  The plurality of LED elements 22 are mounted in a line (straight or one-dimensional) along the longitudinal direction of the mounting substrate 21. The LED element 22 is a bare chip that emits monochromatic visible light, and is flip-chip mounted or wire bonded mounted on a wiring pattern (not shown) formed on the mounting substrate 21.

  For example, a blue LED chip that emits blue light is used as the LED element 22. More specifically, a gallium nitride based semiconductor light emitting element that is made of an InGaN based material and has a central wavelength of 440 nm to 470 nm can be used. In the present embodiment, 24 LED elements 22 are mounted on one LED module 20. In the present embodiment, an example of the LED element 22 is shown as the semiconductor light emitting element, but other semiconductor light emitting elements such as a semiconductor laser and an organic EL (Electro Luminescence) may be used.

  The sealing member 23 has a substantially semicircular dome shape with a cross section protruding upward, and is formed in a straight line so as to cover all the LED elements 22 on the mounting substrate 21 to seal the LED elements 22. , Protecting. The sealing member 23 is a phosphor-containing resin containing a phosphor that is a wavelength converter, and functions as a wavelength conversion layer that converts the wavelength of light from the LED element 22.

  As the sealing member 23, for example, when the LED element 22 is a blue LED, in order to obtain white light, YAG (yttrium, aluminum, garnet) phosphor material and yellow phosphor fine particles are dispersed in a silicone resin. A phosphor-containing resin can be used.

  2 and 3, the base 30 is a long substrate (LED module mounting substrate), and a plurality of LED modules 20 are placed on one surface (front surface), and the other side. The mounting substrate 60, the drive unit 50, and the connection unit 40 are placed on the surface (back surface).

  The base 30 also functions as a heat radiator for dissipating heat from the LED module 20. Therefore, it is preferable that the base 30 is made of a highly heat conductive material such as metal. In this embodiment, a long plate-like aluminum substrate made of aluminum having a Young's modulus of 70000 [MPa] was used.

  The connection unit 40 is a power receiving terminal that is directly connected to an AC power source (not shown) and receives power from the AC power source. The connection portion 40 according to the present embodiment is a male terminal exposed from the opening 11 provided in the straight pipe 10.

  The drive unit 50 lights the LED module 20 using the power received by the connection unit 40. For example, as shown in FIG. 4, the drive unit 50 according to the present embodiment includes a rectifier circuit that converts alternating current received by the connection unit 40 into direct current. Specifically, the rectifier circuit is configured by a diode bridge using four Zener diodes, converts the alternating current received at the connection unit 40 into direct current, and supplies the direct current to the LED module 20.

  The mounting substrate 60 is mounted on the back surface of the base 30 and in the center in the longitudinal direction of the base 30. The drive unit 50 and the connection unit 40 are mounted on the mounting substrate 60. The mounting substrate 60 can be made of the same material as the mounting substrate 21, for example.

  As shown in FIG. 2, the base (fixed portion) 70 includes a bottomed cylindrical base body and a pair of base pins protruding outward from the outer surface of the bottom of the base body. The base 70 is fixed to the reduced diameter portions at both ends of the straight pipe 10 with an adhesive or the like. The base 70 is attached to a socket of a lighting fixture and functions as a fixing portion that fixes the LED lamp 1 to the lighting fixture. The shape of the base 70 can be appropriately selected according to the lighting fixture to which the LED lamp 1 is mounted. For example, a G-type base or the like is used.

  The base 70 can be formed of metal or resin. For example, if the base 70 is formed of a metal having excellent thermal conductivity and is brought into contact with the end of the base 30 as shown in FIG. 2, the heat from the LED module 20 transmitted through the base 30 can be obtained. The heat can be radiated from both ends of the LED lamp 1.

  Next, with reference to FIG. 5, the illuminating device 2 provided with the LED lamp 1 which concerns on this Embodiment is demonstrated. FIG. 5 is a perspective view illustrating a schematic configuration of the illumination device 2 including the LED lamp 1. The lighting device 2 includes the LED lamp 1 according to the present embodiment and a lighting fixture 3.

  The luminaire 3 includes a pair of sockets 4 that receive the cap 70 and holds the LED lamp 1, an appliance body 5 to which the socket 4 is attached, a circuit box (not shown), and a rear surface of the appliance body 5 (typically Includes an AC power supply 80 installed on the back of the ceiling. Moreover, the inner surface of the instrument main body 5 is a reflecting surface that reflects light emitted from the LED lamp 1 in a predetermined direction (for example, downward). The circuit box houses therein a lighting circuit that supplies power to the LED lamp 1 when a switch (not shown) is turned on and does not supply power when the switch is turned off. The lighting fixture 3 is mounted on a ceiling or the like via a fixture.

  The lighting fixture 3 having the above-described configuration may be a conventional lighting fixture to which a conventional straight tube fluorescent lamp can be attached. However, prior to attaching the LED lamp 1 according to the present embodiment, the AC power source 80 and the socket 4 are electrically disconnected, and a harness 82 having a plug 81 attached to the tip is directly connected to the AC power source 80. Shall. Further, the plug 81 is arranged at a position where it can be attached to the connection portion 40 of the LED lamp 1 attached to the socket 4.

  The LED lamp 1 which concerns on this Embodiment is attached with respect to the lighting fixture 3 of the said structure. Specifically, the LED lamp 1 can be turned on by inserting the base 70 into the socket 4 to fix the LED lamp 1 to the lighting fixture 3 and connecting the plug 81 to the connecting portion 40.

  As described above, the construction for connecting the harness 82 to the AC power supply 80 is extremely simple regardless of what circuit (the ballast 170 in FIG. 10) is installed between the AC power supply 80 and the socket 4. be able to. As a result, it becomes extremely easy to attach the LED lamp 1 according to the present embodiment to an existing lighting fixture.

  Further, by causing the base 70 to function only as a fixed portion and making an electrical connection with the connecting portion 40 disposed at a position different from the base 70, poor contact due to loosening of the base 70 is effectively prevented. be able to. In addition, since the base 70 can have a simple structure, the range of materials can be selected and the manufacturing cost can be reduced. Further, since the base 70 is not energized, it is possible to use a member formed only of a metal such as aluminum as the base of the LED lamp 1. The LED lamp 1 to be configured is obtained. For this reason, for example, even when exposed to high heat, the base 70 of the LED lamp 1 exhibits high heat resistance, so that it can be fixed to the lighting fixture 3 even in the event of a fire. It is very useful.

  Furthermore, by providing the drive unit 50 on the LED lamp 1 side, only the durability corresponding to the life of the LED lamp 1 may be given to the drive unit 50. As a result, as compared with the case where the drive unit 50 is provided on the lighting fixture 3 side, there is no need for additional work accompanying the deterioration of the drive unit 50.

  The through-hole 83 for the connecting member (the harness 82 in this embodiment) between the AC power supply 80 and the LED lamp 1 to be guided to the outside of the lighting fixture 3 is conspicuous from the back side of the lamp and the like in order to prevent light shielding and deterioration in appearance. It is preferable to be located where there is not. Further, from the viewpoint of improving workability when the LED lamp 1 is attached to the luminaire 3, the through hole 83 is provided at the tip of the harness 82 of the AC power supply 80 (in this embodiment, connected to the drive circuit). The plug portion 81), which is a portion, has a dimension substantially equal to the outer diameter. The smaller the tip of the harness 82 is than the through hole 83, the smaller. There is a concern that the connection workability between the luminaire 3 and the LED lamp 1 is lowered. In the present embodiment, the connection member in which the harness 82 and the plug 81 are integrated is employed. However, the connection member is not particularly limited to the present embodiment. Any member may be used as long as it is suitable for the connection. Moreover, the length etc. are not specifically limited.

  Furthermore, it is preferable that a guide groove for guiding and arranging the connection member is provided in the vicinity of the through hole 83 and the lighting fixture 3 in which the connection member is arranged. The depth and arrangement state of the guide groove are not particularly limited, but from the viewpoint of improving workability, it is preferable that the guide groove is provided in parallel around the through-hole 83 of the luminaire 3 and at least on either side. .

  Further, even when an external impact such as vibration is applied to the LED lamp 1 due to a natural disaster or the like, in addition to the base 70, the lighting fixture 3 and the LED lamp 1 are connected by a connecting member such as a harness 82. Are connected to each other and the fixing strength of the LED lamp 3 with respect to the lighting fixture 3 is kept high, so that an effect such as drop suppression can be obtained.

  Note that the shape of the connection member such as the harness 82 is not particularly limited, and may be appropriately selected according to a desired input value such as for 100V or 200V. When the drive circuit input is multi-compatible such as 100 V or more and 200 V or less, it is preferable to adopt a structure in which both can be connected.

(Modification)
Next, the modification of the LED lamp 1 which concerns on embodiment of this invention is demonstrated below.

(Modification 1)
First, an LED lamp 1A according to Modification 1 of the present invention will be described with reference to FIGS. 6 (a) to 6 (c). FIG. 6A is a perspective view of an LED lamp 1A according to the first modification. FIG. 6B is a cross-sectional view of FIG. 6A taken along line YY ′. FIG. 6C is a cross-sectional view of FIG. 6A taken along the line ZZ ′.

  As shown in FIGS. 6A to 6C, the LED lamp 1A is attached to a metal casing 10A made of metal such as aluminum and the metal casing 10A instead of the straight tube 10 and the base 30. Cover 30 </ b> A. Since other configurations are common to the present embodiment, detailed description is omitted.

  As shown in FIG. 6B, the metal casing 10A has a substantially semi-cylindrical shape, and a base on which the LED module 20 according to the present embodiment is mounted on the surface covered with the cover 30A. Function as. Further, the semi-cylindrical portion of the metal casing 10A is exposed to the outside, and the heat generated by the LED module 20 is released from the exposed portion.

  Furthermore, as shown in FIG. 6C, a semi-cylindrical portion is scraped off to form a concave portion 11A at the center in the longitudinal direction of the metal casing 10A. And the connection part 40 which concerns on this Embodiment, the drive part 50, and the mounting board | substrate 60 are installed in this recessed part 11A.

  The cover 30A has a substantially semicylindrical shape and is made of a synthetic resin such as plastic. A cylindrical straight pipe is formed by joining the metal housing 10A and the cover 30A. In addition, a cap 70 according to the present embodiment is attached to both end portions of the metal casing 10A and the cover 30A.

(Modification 2)
In the present embodiment, an example of the COB type (Chip On Board) LED module 20 in which the LED element 22 (bare chip) is directly mounted on the mounting substrate 21 is shown. However, instead of the COB type LED module 20, a package type in which an LED chip is mounted in a cavity molded with a resin or the like and the inside of the cavity is sealed with a phosphor-containing resin, that is, a surface mount type (SMD: Surface) The LED module 20B of Mount Device) may be used.

  With reference to FIG. 7, an SMD type LED module 20B according to Modification 2 will be described. FIG. 7 is a perspective view of an LED module 20B according to the second modification. As shown in FIG. 7, the LED module 20 </ b> B according to the modified example 2 has a plurality of packages 21 </ b> B arranged in a row (straight line) in the longitudinal direction of the substrate 22 </ b> B (direction parallel to the tube axis direction of the straight tube 10) with a die attach agent or the like. Are arranged side by side.

  The package 21B is made of resin or the like, and the LED chip 23B is mounted in the cavity. The mounted LED chip 23B is covered with a phosphor-containing resin 24B. The plurality of packages 21B are electrically connected to each other by a wiring pattern, a wire, and the like, and are also electrically connected to the external terminal 25B.

(Modification 3)
In the present embodiment, an example of the straight tube type LED lamp 1 is shown. However, the present invention can also be applied to a circular tube type LED lamp 1C including a circular tube 10C instead of the straight tube 10. With reference to FIG. 8, LED lamp 1C which concerns on the modification 3 is demonstrated. FIG. 8 is a plan view of an LED lamp 1C according to Modification 3.

  As shown in FIG. 8, the LED lamp 1 </ b> C according to Modification 3 includes an annular tube 10 </ b> C. The circular tube 10C accommodates the LED module 20, the base 30, the drive unit 50, the mounting substrate 60, and the like according to the present embodiment inside, and exposes the connection unit 40 that protrudes inward.

  This LED lamp 1C is attached to a lighting fixture to which a conventional annular fluorescent lamp can be attached. Specifically, an arbitrary position different from the connection portion 40 of the circular tube 10C is held by a C-shaped ring (not shown) provided on the lighting fixture side, and is attached to the tip of the harness 82 extending from the AC power source (not shown). The attached plug 81 is connected to the connection unit 40.

  The present invention is not limited to the straight tube type LED lamp 1 according to the present embodiment and the circular LED lamp 1C according to the modification example 3, but also LED lamps of all shapes installed in existing lighting fixtures. Can be applied to.

  You may combine this Embodiment and the said modification, respectively.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The present invention can be widely used as a lamp and a lighting device installed in an existing lighting fixture.

1, 1A, 1C, 100 LED lamp 2 Lighting device 3 Lighting fixture 4 Socket 5 Appliance main body 10, 110 Straight tube 10A Metal housing 10C Circular tube 11 Opening portion 11A Recess 20, 20B, 120 LED module 21, 121, 60 Mounting Substrate 21B Package 22, 122 LED element 22B Substrate 23, 123 Sealing member 23B LED chip 24B Phosphor-containing resin 25B External terminal 30 Base 30A Cover 40 Connection unit 50 Drive unit 70, 150a, 150b Base 80, 160 AC power supply 81 Plug 82 Harness 83 Through hole 170 Ballast

Claims (6)

A lamp that is attached to a luminaire having a socket for holding the lamp and supplying power from the AC power source to the lamp,
The base,
A light emitting module attached to the base;
A fixing portion attached to the socket and fixing the lamp to the lighting fixture;
A connection unit that is directly connected to the AC power source and receives power from the AC power source;
Using the power received by the connection unit, and a drive unit for lighting the light emitting module,
The fixing part and the connection part are provided at different positions. The lamp further comprises a straight tube,
The lamp according to claim 1, wherein the straight pipe accommodates the base therein, and the fixing portions are attached to both ends in the longitudinal direction. The light emitting module is attached to one surface of the base,
The lamp according to claim 2, wherein the connection portion is a surface on the other side of the base and is attached to a central portion in the longitudinal direction. The lamp according to claim 1, wherein the fixing portion is made of metal and is in contact with the base. The lamp according to any one of claims 1 to 4, wherein the drive unit includes a rectifier circuit that converts alternating current received by the connection unit into direct current. The lamp according to any one of claims 1 to 4,
An illuminating device, comprising: an AC power source that supplies power to the connecting portion; and a lighting fixture that includes a socket that receives the fixing portion.

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