JP5281382B2 - LED lamp - Google Patents

Description

  The present invention relates to an LED lamp that uses an LED as a light source and is suitable for use as an alternative to a fluorescent lamp.

  FIG. 7 shows an example of a conventional LED lamp in a cross-sectional view (see, for example, Patent Document 1). The LED lamp X shown in the figure includes a long rectangular substrate 91, a plurality of LEDs 92 mounted on the substrate 91, a tube 93 that accommodates the substrate 91, a terminal 94, and a circuit for lighting the LED 92. 95. On the substrate 91, wirings (not shown) connected to the plurality of LEDs 92 and the terminals 94 are formed. This LED lamp X is configured such that a plurality of LEDs 92 can emit light by fitting a terminal 94 into an insertion port of a socket of a general fluorescent lamp lighting fixture. Since the LED 92 has low power consumption and long life, if the LED lamp X is used as an alternative to a fluorescent lamp, improvements in cost and environment can be expected. The general-use fluorescent lamp luminaire is a luminaire widely used mainly for indoor general illumination. For example, in Japan, a commercial 100 V power source is used, and a straight-tube fluorescent lamp defined in JIS C7617 or A lighting fixture to which a ring-shaped fluorescent lamp defined in JIS C7618 is attached.

  In the conventional LED lamp X, the circuit 95 mounted on the substrate 91 is for converting alternating current supplied from a commercial power source into direct current and supplying it to the LED as a constant current. It is configured to include. Therefore, the circuit 95 having such a configuration is preferably provided in the vicinity of the terminal 94 which is a power supply unit, that is, in the vicinity of both ends of the LED lamp X.

  On the other hand, the circuit 95 is mounted on the back surface of the substrate 91 (the surface opposite to the surface on which the plurality of LEDs 92 are mounted). Considering the influence of heat generated by the LED 92, the plurality of power supply components constituting the circuit 95 are not arranged at positions overlapping the LED 92 as shown in FIG. 7, but are arranged in the longitudinal direction of the substrate 91 so as not to overlap the LED 92. It is preferable to dispose them at both ends in the longitudinal direction. That is, it is preferable that the plurality of power supply components are arranged separately in a region (power supply region) different from a region (light source region) where the plurality of LEDs 92 are arranged.

  However, if the plurality of power supply components are arranged in the power supply area (both ends of the substrate 91) as distinguished from the light source region in which the LEDs 92 are arranged, the LEDs 92 cannot be arranged in the vicinity of both ends of the substrate 91. As a result, the vicinity of both end portions of the substrate 91 becomes a non-light emitting region, which may cause a decrease in illumination quality of the fluorescent lamp X, which is not preferable.

Japanese Utility Model Publication No. 6-54103

  The present invention has been conceived under the circumstances described above, and in an LED lamp in which a plurality of power supply components are arranged in a power source region different from a light source region in which a plurality of LEDs are arranged, the illumination quality is improved. It is an object to prevent the decrease.

An LED lamp provided by the present invention includes a plurality of LEDs arranged in a light source region, a plurality of power supply components arranged in a power supply region, and a tubular shape for accommodating the plurality of LEDs and the plurality of power supply components. comprising a case, an auxiliary light source means for irradiating light to the outside from the range corresponding to the power region of the upper SL case, a plurality of LED is mounted on one surface of a first substrate, the The plurality of power supply components are mounted on both surfaces of the second substrate, and the case has a straight tube shape having a circular cross section. The first substrate and the second substrate have a thickness of the substrate. The first substrate is located at a position deviated in a radial direction from the central axis of the case, and the second substrate is located at the center more than the first substrate. that is located in the axis closer It is characterized.

According to such a configuration, by providing the auxiliary light source means, light is irradiated to the outside also from a range corresponding to the power supply region in the case. Thereby, the deterioration of the illumination quality resulting from the presence of the power supply region can be prevented. In addition, since the plurality of power supply components are mounted on both surfaces of the second substrate, the mounting efficiency of the power supply components is increased as compared with the case where the power supply components are mounted only on one surface of the second substrate. The area occupied by the substrate can be reduced. Thereby, the power source region can be narrowed, and the area of the light source region can be substantially ensured. Therefore, according to the LED lamp having the above configuration, the illumination quality can be improved. In addition, if the second substrate is located closer to the center axis of the case than the first substrate, the dimension in the width direction perpendicular to the center axis of the case is set for the second substrate. Than can be secured. Therefore, in the case where a certain occupied area is secured for the second substrate, the longitudinal dimension along the central axis of the case can be reduced, and the power supply region can be further narrowed. This is more suitable for improving the illumination quality of the LED lamp.

  In one embodiment of the invention, the auxiliary light source means comprises an additional LED arranged in the power supply area. In this case, preferably, the auxiliary light source unit is formed in a light introducing portion for introducing light from the additional LED into the inside, and a partial cylindrical shape along the inner surface of the case, and the light from the light introducing portion. And a light emitting member that emits light from the light emitting surface of the outer portion while proceeding.

  When the additional LED is arranged in the power supply region in this way, light can be efficiently delivered to the range corresponding to the power supply region in the case. In addition, when the light guide member having the above-described configuration is provided, light from the additional LEDs can be uniformly irradiated from the range corresponding to the power supply region in the case to the outside through the light guide member. This is suitable for preventing deterioration in illumination quality.

  In another embodiment of the present invention, the auxiliary light source means is formed in a partial cylindrical shape along the inner surface of the case and a light introducing portion for introducing light from at least one of the plurality of LEDs into the inside. And a light emitting member that emits light from the light emitting surface of the outer portion while advancing light from the light introducing portion. According to such a structure, the light from the existing LED can be irradiated uniformly from the range corresponding to the power supply region in the case to the outside through the light guide member. This is suitable for preventing deterioration in illumination quality.

  In a preferred embodiment of the present invention, the inner portion of the light emitting portion is a light reflecting surface that reflects light introduced from the light introducing portion toward the light emitting surface. According to such a configuration, the light traveling inside the light guide member can be reflected by the light reflecting surface and directed more efficiently to the light emitting surface.

In a preferred embodiment of the present invention, the plurality of power supply components include an AC / DC converter, and the AC / DC converter is mounted on a surface of the second substrate facing the central axis.

In a preferred embodiment of the present invention, the second substrate is disposed at both ends in the longitudinal direction of the first substrate.

  In a preferred embodiment of the present invention, the case is integrally formed with projecting pieces projecting inward so as to form a pair in a plane parallel to the central axis of the case. In the above, the radial movement relative to the case is restricted by the protruding piece.

  In a preferred embodiment of the present invention, the case is integrally formed with projecting pieces projecting inward so as to form a pair in a plane parallel to the central axis of the case. The movement with respect to the case is restricted by the protruding piece. In this case, preferably, the movement of the substrate on which the plurality of LEDs are mounted and the light guide member with respect to the case are restricted by the protruding pieces.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. For convenience of explanation, the upper and lower directions are specified with reference to FIG.

  1 to 3 show an example of an LED lamp according to the present invention. The LED lamp A1 of the present embodiment includes a light source substrate 1, a plurality of LED modules 2, a heat dissipation member 3, a power supply substrate 4, a plurality of power supply components 5, a case 6, an auxiliary light source means 7, and a pair of The base 8 is provided, and is used, for example, by being attached to a general fluorescent lamp luminaire as an alternative to a straight tube fluorescent lamp.

  The light source substrate 1 is made of, for example, a glass epoxy resin and is formed in a long rectangular shape. Wiring (not shown) is formed at appropriate positions on the surface of the light source substrate 1. The light source substrate 1 is laminated on a heat radiating member 3 described later, and is attached to the heat radiating member 3 using, for example, screws.

  The plurality of LED modules 2 are light sources of the LED lamp A 1 and are mounted on the upper surface 1 a of the light source substrate 1. These LED modules 2 are arranged so as to be arranged at a predetermined interval along the longitudinal direction of the light source substrate 1, and are connected in series by, for example, wiring (not shown). As shown in FIGS. 1 and 2, the plurality of LED modules 2 are disposed in the light source region 11 that is a position excluding both ends in the longitudinal direction of the light source substrate 1. As the LED module 2, for example, a white LED configured in a surface mount package type is preferably used.

  The heat dissipating member 3 is made of, for example, Al and has an elongated block shape extending along the longitudinal direction of the light source substrate 1. As clearly shown in FIG. 3, a plurality of concave portions 31 are formed on the surface of the heat radiating member 3, and have a shape having irregularities. The recess 31 is formed over substantially the entire length of the heat dissipation member 3 along the longitudinal direction of the light source substrate 1. These concave portions 31 can be formed by providing convex portions on a mold used when the heat radiating member 3 is formed.

  The power supply substrate 4 is made of, for example, glass epoxy resin and is formed in a long rectangular shape. Wiring (not shown) is formed at appropriate positions on the surface of the power supply substrate 4. The power supply substrate 4 is attached to the light source substrate 1 by a plurality of metal leads 41. For example, one end of the plurality of leads 41 is fixed to both longitudinal ends of the power supply substrate 4 by soldering, and the other end is a pad (not shown) provided on the upper surface 1 a of the light source substrate 1. Soldered to As a result, the power supply substrate 4 is spaced from the light source substrate 1 or the heat dissipation member 3. Note that the wiring of the light source substrate 1 and the wiring of the power supply substrate 4 are electrically connected via leads 41.

  The plurality of power supply components 5 function as a power supply circuit for lighting the LED module 2 and an auxiliary LED module 71 described later, and are mounted on both surfaces (upper surface 4 a and lower surface 4 b) of the power supply substrate 4. The plurality of power supply components 5 include an AC / DC converter 51 and other functional components 52 such as a capacitor and a resistor. The auxiliary LED module 71 is configured to be supplied. The AC / DC converter 51 occupies a larger space than the other components mounted on the power supply board 4.

  The plurality of power supply components 5 and the power supply substrate 4 on which these power supply components 5 are mounted are arranged in the power supply regions 12 located at both ends in the longitudinal direction of the light source substrate 1.

  The case 6 is for housing the light source substrate 1, the heat radiating member 3, and the power supply substrate 4, and as shown in FIG. 3, has a straight tubular shape having a circular cross section. On the inner surface of the case 6, a pair of projecting pieces 61 projecting inward are integrally formed. Each of the protruding pieces 61 is biased downward (in the radial direction) from the central axis O1 of the case 6 and protrudes in a plane parallel to the central axis O1, and extends in a direction along the central axis O1. Yes. The case 6 having such a configuration is made of a synthetic resin such as polycarbonate, and is integrally formed by extrusion molding.

  About the light source board | substrate 1 and the heat radiating member 3 of the said structure, the width dimension of the light source board | substrate 1 thru | or the heat radiating member 3, and the vertical dimension of the heat radiating member 3 so that it can accommodate below the protrusion piece 61 in FIG. Is stipulated. In the accommodated state shown in FIG. 3, the light source substrate 1 is restricted from moving in the direction perpendicular to the central axis O <b> 1 (upward in the drawing) with respect to the case 6 by the upper surface 1 a contacting the protruding piece 61. The lower part of the heat radiating member 3 is in contact with the inner surface of the lower part of the case 6.

  Here, the light source substrate 1 is located at a position deviated from the central axis O1 of the case 6 to the side opposite to the upper surface 1a, and the power supply substrate 4 is located near the central axis O1 of the case 6. Thus, since the power supply substrate 4 is located closer to the central axis O1 than the light source substrate 1, the width dimension of the power supply substrate 4 can be made larger than the width dimension of the light source substrate 1. The light source substrate 1, the heat dissipation member 3, and the power supply substrate 4 are accommodated in the case 6 by inserting the light source substrate 1 and the heat dissipation member 3 into the case 6 below the protruding piece 61 while sliding.

  The auxiliary light source means 7 is for irradiating light from the range corresponding to the power source region 12 in the case 6, and includes a plurality of auxiliary LED modules 71 and a light guide member 72. Here, the “range corresponding to the power supply region 12 in the case 6” is a portion of the case 6 that is located above the light source substrate 1 and substantially overlaps the power supply region 12 in the longitudinal direction of the case 6. Means range.

  The plurality of auxiliary LED modules 71 are mounted on the upper surface 1 a of the light source substrate 1. Specifically, these auxiliary LED modules 71 are arranged in the power source region 12 of the light source substrate 1 and are spaced apart from each other in the longitudinal direction of the light source substrate 1 at both ends in the width direction of the light source substrate 1. Are lined up. The auxiliary LED module 71 is smaller in size and power consumption than the LED module 2, and plays an auxiliary role as a light source of the LED lamp A1. As the auxiliary LED module 71, as in the LED module 2, for example, a white LED configured in a surface-mount package type is suitably used.

  The light guide member 72 is for efficiently guiding the light from the auxiliary LED module 71 to the case 6, and is made of a highly transparent member made of an acrylic resin such as PMMA (polymethyl methacrylate), for example. . The light guide member 72 is substantially cylindrical, and is disposed at a position corresponding to the power supply region 12 inside the case 6. The light guide member 72 is formed by, for example, injection molding using a mold, and has a light introducing portion 721 and a light emitting portion 722 as shown in FIGS. The peripheral surfaces of the light introducing portion 721 and the light emitting portion 722 are smooth mirror surfaces.

  The light introducing portion 721 is a portion that introduces light from the auxiliary LED module 71 into the light guide member 72, and an end surface at a position facing the auxiliary LED module 71 is a light incident surface 721 a. In the present embodiment, the light introduction part 721 has an appropriately bent shape, and is provided so as to be connected to both ends of the light emission part 722 in the circumferential direction. In addition, the peripheral surface other than the light incident surface 721a of the light introducing portion 721 is, for example, white-painted, and the inconvenience that light that has entered the light introducing portion 721 leaks to the outside is prevented.

  The light emitting portion 722 has a uniform partial cylindrical shape in the longitudinal direction along the central axis O1 of the case 6, and includes a light reflecting surface 722a formed at the inner portion and a light emitting surface 722b formed at the outer portion. And have. The light reflecting surface 722a is a surface for reflecting the light traveling through the light introducing portion 721 toward the light emitting surface 722b facing the light reflecting surface 722a. For example, white coating is applied. Has a light scattering reflection function. The light emitting surface 722 b is a surface for emitting the light reflected by the light reflecting surface 722 a toward the case 6, and is positioned so as to be in close contact with the inner surface of the case 6. The light reflecting surface 722a may be formed by forming a fine rough surface instead of the one formed by applying white paint. In this case, the fine rough surface is formed by, for example, forming a part of a mold for forming the light guide member 72 by embossing or performing a blasting process on a predetermined part after forming.

  About the light guide member 72 of the said structure, the dimension of each place is prescribed | regulated so that it can accommodate above the protrusion piece 61 of the case 6 in FIG. In the accommodated state shown in FIG. 3, the light guide member 72 has a direction perpendicular to the central axis O <b> 1 with respect to the case 6 (downward direction in the drawing) or the case 6 when the light introducing portion 721 contacts the protruding piece 61. The movement in the circumferential direction is restricted. The light guide member 72 is accommodated in the case 6 by inserting the light guide member 72 into the case 6 while sliding the light guide member 72 above the protruding piece 61.

  The pair of bases 8 is for supplying power from a commercial AC power source by being mounted on a socket of a fluorescent lamp lighting fixture. As shown in FIG. 2, the base 8 includes a bottomed cylindrical cover body 81, a resin block 82 accommodated and held in a hollow portion of the cover body 81, and two terminals 83. A recess 82 a is formed in the resin block 82, and the base 8 is attached to the heat dissipation member 3 by fitting the longitudinal end of the heat dissipation member 3 into the recess 82 a. Thereby, in LED lamp A1, the heat radiating member 3 is in the state supported by the pair of bases 8.

  A partially cylindrical gap is provided between the cover body 81 and the resin block 82, and both ends in the longitudinal direction of the case 6 are inserted into the gap when the base 8 is attached to the heat dissipation member 3. Yes. The terminal 83 is provided so as to penetrate the cover body 81 and the resin block 82. One end portion (outer end portion) of the terminal 83 is a portion that fits into the insertion port of the socket of the fluorescent lamp lighting device, and the other end portion of the terminal 83 is between the wiring of the light source substrate 1. Electrical continuity is achieved.

  Next, the operation of the LED lamp A1 having the above configuration will be described.

  When the LED lamp A1 is used, the LED module 2 and the auxiliary LED module 71 emit light by supplying power after fitting the terminal 83 of the base 8 into the socket of the fluorescent lamp lighting fixture. Can be made.

  As described above, the LED lamp A1 of the present embodiment includes the auxiliary light source means 7 for irradiating light from the range corresponding to the power source region 12 in the case 6. For this reason, when the LED lamp A <b> 1 is used, light is irradiated not only from the range corresponding to the light source region 11 in the case 6 but also from the range corresponding to the power source region 12 in the case 6. Therefore, in the LED lamp A1, it is possible to prevent a deterioration in illumination quality due to the presence of the power supply region 12.

  In the present embodiment, the auxiliary light source means 7 includes a plurality of auxiliary LED modules 71 and a light guide member 72. And since the some auxiliary | assistant LED module 71 is arrange | positioned in the power supply area | region 12 of the light source board | substrate 1, light can be efficiently reached to the range corresponding to the power supply area | region 12 in case 6. FIG. Further, by providing the light guide member 72, the light from the auxiliary LED module 71 can be uniformly irradiated from the range corresponding to the power supply region 12 in the case 6 to the outside via the light guide member 72. . This is suitable for preventing the deterioration of the illumination quality of the LED lamp A1.

  The light emitting portion 722 of the light guide member 72 is provided with a light reflecting surface 722a that reflects light from the auxiliary LED module 71 introduced through the light introducing portion 721 toward the light emitting surface 722b. For this reason, the light traveling inside the light guide member 72 is reflected by the light reflecting surface 722a and travels toward the light emitting surface 722b more efficiently. In addition, since the light reflection surface 722a has a light scattering reflection function, the amount of light emitted from the light emission surface 722b can be uniform. This is more suitable for preventing deterioration in illumination quality of the LED lamp A1.

  In the present embodiment, since the plurality of power supply components 5 are mounted on both surfaces (the upper surface 4a and the lower surface 4b) of the power supply substrate 4, for example, compared with the case where the power supply components 5 are mounted only on the upper surface 4a of the power supply substrate 4. Thus, the mounting efficiency of the power supply component 5 is increased, and the area occupied by the power supply substrate 4 can be reduced. Therefore, the size of the power supply board 4 in the longitudinal direction along the central axis O1 of the case 6 can be reduced. Thereby, the power source region 12 in the light source substrate 1 can be narrowed, and the area of the light source region 11 can be substantially ensured. According to the LED lamp A1 having such a configuration, it is possible to improve the illumination quality.

  The power supply substrate 4 is located closer to the central axis O1 of the case 6 than the light source substrate 1. Therefore, the width dimension of the power supply substrate 4 that is perpendicular to the central axis O <b> 1 of the case 6 can be secured larger than the width dimension of the light source substrate 1. Therefore, in the case where a certain occupied area is secured for the power supply substrate 4, the longitudinal dimension along the central axis O1 of the case 6 can be reduced, and the power supply region 12 can be further narrowed. This is more suitable for improving the illumination quality of the LED lamp A1.

  In the present embodiment, the light source substrate 1 is stacked on the heat dissipation member 3. For this reason, the heat generated when the LED module 2 and the auxiliary LED module 71 are turned on can be effectively released to the outside through the heat dissipation member 3, and the deterioration of the LED module 2 and the auxiliary LED module 71 can be prevented. it can. Moreover, since the heat radiating member 3 is extended along substantially the whole longitudinal direction of the case 6, it can function as a structural material of LED lamp A1. Therefore, according to the structure provided with such a heat radiating member 3, moderate rigidity can be ensured in the LED lamp A1.

  As described above, the pair of projecting pieces 61 are provided inside the case 6, and the projecting pieces 61 abut on the upper surface 1 a at both ends in the width direction of the light source substrate 1. Movement in the direction perpendicular to the central axis O1 of the case 6 (the radial direction of the case 6) is restricted. Further, when the pair of protruding pieces 61 abut on the light introducing portion 721 of the light guide member 72, the light guide member 72 is in a direction perpendicular to the central axis O <b> 1 of the case 6 (radial direction of the case 6) or the case 6. Is restricted from moving in the circumferential direction. Thereby, when the LED lamp A1 is assembled, the light source substrate 1 and the light guide member 72 can be positioned relative to the case 6 simply by inserting the light source substrate 1 and the light guide member 72 into the case 6. Therefore, the assembly work of the LED lamp A1 can be easily performed.

  4 to 6 show other examples of the LED lamp according to the present invention. In these drawings, elements that are the same as or similar to those in the above embodiment are given the same reference numerals as in the above embodiment, and description thereof will be omitted as appropriate.

  In the LED lamp A2 shown in FIGS. 4 and 5, the configuration of the auxiliary light source means 7 is different from the LED lamp A1 of the above embodiment. The LED lamp A2 does not include the auxiliary LED module 71, and is configured to guide light from the LED module 2 to a range corresponding to the power source region 12 in the case 6 via the light guide member 72. The light guide member 72 of the present embodiment is variously modified compared to the above embodiment.

  The light introduction part 721 of the light guide member 72 is for introducing light from the LED module 2 located at both ends in the longitudinal direction of the light source substrate 1 into the light guide member 72 and faces the LED module 2. The end surface to be used is a light incident surface 721a. The light introducing portion 721 is appropriately curved and is provided so as to be connected to one end portion in the longitudinal direction of the light emitting portion 722. 5, the light guide member 72 has a direction perpendicular to the central axis O1 with respect to the case 6 (downward direction in the figure) when the end surface in the circumferential direction of the light emitting portion 722 contacts the protruding piece 61. ) Or the circumferential movement of the case 6 is restricted.

  In the LED lamp A <b> 2 of the present embodiment, light from the existing LED module 2 can be uniformly irradiated from the range corresponding to the power supply region 12 in the case 6 to the outside via the light guide member 72. This is suitable for preventing deterioration of the illumination quality of the LED lamp A2. In addition, since it is not necessary to provide an additional LED in the LED lamp A2, simplification of a power supply circuit configured using a plurality of power supply components 5 can be expected.

  In LED lamp A3 shown by FIG. 6, the structure of the auxiliary light source means 7 differs from LED lamp A1 of the said embodiment. In LED lamp A3, arrangement | positioning of the some auxiliary | assistant LED module 71 differs from the said embodiment, and the light guide member 72 is not provided. In the present embodiment, the plurality of auxiliary LED modules 71 are mounted on the upper surface of the power supply board 4 and are arranged at predetermined intervals along the longitudinal direction of the power supply board 4 near both ends in the width direction of the power supply board 4. It is out.

  In the LED lamp A3 of the present embodiment, light from the auxiliary LED module 71 mounted on the power supply board 4 can be emitted from the range corresponding to the power supply region 12 in the case 6 to the outside. Further, the power supply substrate 4 is biased and positioned in a direction (upward in the drawing) in which light from the auxiliary LED module is mainly emitted to the outside of the case 6 as compared with the light source substrate 1. For this reason, the light emitted from the auxiliary LED module 71 efficiently reaches the range corresponding to the power source region 12 in the case 6.

  The LED lamp according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the LED lamp according to the present invention can be varied in design in various ways.

It is a perspective view which shows an example of the LED lamp which concerns on this invention. It is principal part sectional drawing in alignment with the II-II line of FIG. It is an expanded sectional view which follows the III-III line of FIG. It is sectional drawing similar to FIG. 2 which shows the other example of the LED lamp which concerns on this invention. It is an expanded sectional view which follows the VV line of FIG. It is a perspective view which shows the other example of the LED lamp which concerns on this invention. It is sectional drawing which shows an example of the conventional LED lamp.

Explanation of symbols

A1, A2, A3 LED lamp O1 (case) central axis 1 Light source substrate (first substrate)
2 LED module (LED)
3 Heat dissipation member 4 Power supply board (second board)
5 Power supply component 6 Case 7 Auxiliary light source means 8 Base 1a Upper surface (LED mounting surface)
4a Upper surface 4b (of the second substrate) Lower surface 11 (of the second substrate) Light source region 12 Power source region 41 Lead 51 AC / DC converter 61 Projection piece 71 Auxiliary LED module 72 Light guide member 81 Cover body 82 Resin block 83 Terminal 721 Light introducing portion 721a Light incident surface 722 Light emitting portion 722a Light reflecting surface 722b Light emitting surface

Claims (10)

A plurality of LEDs arranged in the light source region, a plurality of power supply components arranged in the power supply region, a tubular case for housing the plurality of LEDs and the plurality of power supply components ,
And an auxiliary light source means for irradiating light to the outside from the range corresponding to the power region of the upper SL case,
The plurality of LEDs are mounted on one surface of the first substrate, and the plurality of power supply components are mounted on both surfaces of the second substrate,
The case is a straight tube having a circular cross section,
The first substrate and the second substrate are arranged at an interval in the thickness direction of the substrate,
The first substrate is in a position deviated in a radial direction from the central axis of the case,
The LED lamp, wherein the second substrate is located closer to the central axis than the first substrate .   The LED lamp according to claim 1, wherein the auxiliary light source means includes an additional LED arranged in the power source region.   The auxiliary light source means is formed in a light-introducing portion for introducing light from the additional LED into the inside and a partial cylindrical shape along the inner surface of the case, and advances the light from the light-introducing portion to the outer portion. The LED lamp of Claim 2 provided with the light guide member which has the light-projection part radiate | emitted from a light-projection surface.   The auxiliary light source means is formed in a light introducing portion for introducing light from at least one of the plurality of LEDs into the inside, and a partial cylindrical shape along the inner surface of the case, and advances the light from the light introducing portion. The LED lamp according to claim 1, further comprising: a light guide member having a light emission part that emits light from a light emission surface of the outer portion while being made.   5. The LED lamp according to claim 3, wherein an inner portion of the light emitting portion is a light reflecting surface that reflects light introduced from the light introducing portion toward the light emitting surface. 6. The plurality of power supply components include an AC / DC converter,
The LED lamp according to claim 1, wherein the AC / DC converter is mounted on a surface of the second substrate facing the central axis . 7. The LED lamp according to claim 1, wherein the second substrate is disposed at both ends of the first substrate in the longitudinal direction . The case is integrally formed with protruding pieces that protrude inward so as to form a pair in a plane parallel to the central axis of the case,
The LED lamp according to claim 1, wherein the first substrate is restricted from moving in a radial direction with respect to the case by the protruding piece. The case is integrally formed with protruding pieces that protrude inward so as to form a pair in a plane parallel to the central axis of the case,
The LED lamp according to claim 3 or 4, wherein movement of the light guide member relative to the case is restricted by the protruding piece. The plurality of LEDs are mounted on a substrate,
The LED lamp according to claim 9, wherein movement of the substrate with respect to the case is restricted by the protruding piece.

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