JP2012074164A - Fluorescent lamp type led lamp and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lamp which can illuminate with wide light distribution, with a stable shape as a straight tube, and enabled to appropriately house and hold an LED module or the like.SOLUTION: The LED lamp includes: a printed board 40 with LEDs 41 mounted on one face; and a lamp body 21 structured of a tube 30 with translucency, in an inner wall 31 of the tube 30, a retaining means for retaining the printed board 40 with the LEDs 41 facing outside at a position nearer toward the inner wall side than a center of the tube 30 is provided.

Description

  Embodiments described herein relate generally to a fluorescent lamp type LED lamp and a lighting fixture.

  In a fluorescent lamp type LED lamp, an LED module is arranged at the center of a long tube. That is, when viewed from the side of the tube, the LED module is arranged at a position corresponding to the diameter. For this reason, light was not irradiated in the reverse direction with respect to the irradiation direction from an LED module, and there existed a problem in light distribution.

  Further, there is a possibility that a long tube or LED module may be bent, and a fluorescent lamp type LED lamp having a stable shape as a straight pipe has been demanded.

JP 2001-351402 A

  The present invention has been made as a solution to the above-described problems of the prior art, and its purpose is to enable illumination by wide light distribution and to have a stable shape as a straight tube, and to appropriately use an LED module or the like. It is providing the fluorescent lamp type LED lamp which can be accommodated and hold | maintained.

  The fluorescent lamp type LED lamp according to the present embodiment includes a printed circuit board having an LED provided on one surface; a tube having permeability, and the inner wall side of the tube is closer to the inner wall side than the center of the tube. The holding means for holding the printed circuit board with the LED facing outward at a position close to the lamp comprises a lamp provided on the inner wall of the tube.

  In the fluorescent lamp type LED lamp according to the present invention, the printed circuit board is disposed at a position closer to the inner wall side than the center of the tube, so that light is emitted from many surfaces of the wall portion of the tube. Enables illumination with wide light distribution. In addition, since the holding means for holding the printed circuit board with the LED facing the outside of the tube wall is provided, the bending of the tube can be restricted by the holding means, and the LED is provided in a stable shape as a straight pipe. The substrate can be held appropriately.

The front view which shows embodiment of the illuminating device which concerns on this invention. The perspective view which shows the principal part of the fluorescent lamp type LED lamp which concerns on this invention. 1 is a partially cutaway perspective view showing a fluorescent lamp type LED lamp according to the present invention. Sectional drawing of the direction orthogonal to the longitudinal direction of the tube in the fluorescent lamp type LED lamp which concerns on the 3rd Embodiment of this invention. Sectional drawing of the direction orthogonal to the longitudinal direction of the tube in the fluorescent lamp type LED lamp which concerns on the 4th Embodiment of this invention. Sectional drawing of the direction orthogonal to the longitudinal direction of the tube in the fluorescent lamp type LED lamp which concerns on the 5th Embodiment of this invention. Sectional drawing of the direction orthogonal to the longitudinal direction of the tube in the fluorescent lamp type LED lamp which concerns on the 6th Embodiment of this invention. The top view which shows 1st Embodiment of the printed circuit board used for each embodiment of the fluorescent lamp type LED lamp of this invention. The top view which shows 2nd Embodiment of the printed circuit board used for each embodiment of the fluorescent lamp type LED lamp of this invention. The top view which shows 3rd Embodiment of the printed circuit board used for each embodiment of the fluorescent lamp type LED lamp of this invention.

  In the fluorescent lamp type LED lamp according to the present invention, the holding means includes a support column that protrudes from the inner wall of the tube and supports the printed board surface on which the LED is not provided.

  The struts may be a single continuous member in the longitudinal direction or a plurality of struts that protrude in a boss shape.

  In the fluorescent lamp type LED lamp according to the present invention, the cross-sectional shape in the direction perpendicular to the longitudinal direction of the tube is a circle or an ellipse, or a shape obtained by cutting a part of the arc in the circle or ellipse and changing it to a flat plate It is characterized by that.

  The circular or elliptical cross-sectional shape includes not only a perfect circle or an ellipse, but also a shape imitating a circle or an ellipse by a plurality of planes, and a shape obtained by partially deforming the shape. Further, a plurality of tubes may be used, and the LEDs in the tubes may be irradiated with light in different directions.

  In the fluorescent lamp type LED lamp according to the present invention, the printed circuit board is provided with an identification unit that can identify front and rear when inserted into the tube.

  The identification means that can identify the front and back include all that prevents misidentification of the insertion direction of the printed circuit board, and changes the corner notch shape, size of the notch, number of notches, notch position, etc. Can be formed.

  Hereinafter, a fluorescent lamp type LED lamp and an illumination device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is a front view of a lighting device 10 according to the embodiment. A lighting circuit 18 that is a power supply source is provided in the fixture main body 11, and sockets 12 protrude from both ends of the housing of the lighting device 10. , 12 are provided. The fluorescent lamp type LED lamp 20 is provided with a base 24 having a feeding terminal 22 and a support terminal 23 projecting outwardly at both ends of a long and tubular lamp body 21.

  The lighting circuit 18 generates a direct current power source necessary for the fluorescent lamp type LED lamp 20 to light up, and supplies a voltage to the two receiving terminals 14 provided in one socket 12 via the power line 13. The feeding terminal 22 has two terminals corresponding to the two receiving terminals 14. When the power feeding terminal 22 and the two receiving terminals 14 are connected, the necessary power is supplied to the fluorescent lamp type LED lamp 20. The support terminal 23 is inserted into and engaged with the engagement hole 15 provided in the socket 12 on the side facing the receiving terminal 14. Thereby, the fluorescent lamp type LED lamp 20 is mounted and mounted on the instrument body 11.

  As shown in FIGS. 2 and 3, the fluorescent lamp type LED lamp 20 according to the second embodiment is configured using a resin tube 30. The cross-sectional shape in the direction orthogonal to the longitudinal direction of the tube 30 is circular and has a permeability. On the inner wall 31 of the tube 30, holding means for holding the printed circuit board 40 with the LED 41 facing outward is formed by extrusion molding at a position closer to the inner wall 31 side than the center of the tube 30. .

  The printed circuit board 40 has a long shape, and a plurality of LEDs 41 are mounted on one surface in a single row or a plurality of rows at a required interval. Each LED 41 is embedded with a phosphor.

  In the second embodiment, L-shaped first sandwiching plates 32, 32 are provided so as to extend in the center direction of the strings from two positions where the strings shorter than the diameter of the circular cross section intersect the inner wall 31. In parallel therewith, L-shaped second holding plates 33, 33 are provided. The second clamping plates 33 and 33 are provided on a circular chord shorter than the circular chord on which the first clamping plates 32 and 32 are provided. The front end portions 32a and 32a of the first clamping plates 32 and 32 are bent at right angles to the second clamping plates 33 and 33, and the distal end portions 33a and 33a of the second clamping plates 33 and 33 are the first clamping plates. It is bent at right angles to the 32 and 32 sides, and both face each other. The first clamping plates 32 and 32 and the second clamping plates 33 and 33 are formed continuously from one end of the tube 30 to the other end. The vicinity of the two long sides of the printed circuit board 40 is sandwiched between slits formed between the tip portions 32a and 32a and the tip portions 33a and 33a.

  On the diameter orthogonal to the above-mentioned circular chord, a single column 34 that is elongated in the longitudinal direction is formed continuously from one end of the tube 30 to the other end. The column 34 protrudes from the inner wall 31 close to the second sandwiching plates 33, 33, and the head 34 a comes into contact with one surface of the printed board 40 to support the printed board 40. The printed circuit board 40 abuts on the column 34 on the surface where the LED 41 is not provided, and when the printed circuit board 40 is supported, the printed circuit board 40 is kept flat.

  The first clamping plates 32 and 32, the second clamping plates 33 and 33, and the column 34 constitute a holding means. The holding means can be created by extrusion molding. The struts 34 may be a single member that is continuous in the longitudinal direction or a structure in which a plurality of struts protrude in a boss shape.

  The caps 24 fitted to both ends of the tube 30 have a bottomed cylindrical shape, and the power supply terminal 22 provided on the disc-shaped lid portion 25 penetrates from the outside to the inside. For example, as shown in FIG. 3, the leading end portion of the feed terminal 22 that penetrates extends to an end portion portion of the first clamping plates 32 and 32 in the tube 30, and the printed pattern of the printed circuit board 40, the connector, etc. The connection is made through appropriate means.

  In the tube 30, a plurality of printed circuit boards 40 are usually stored side by side, and the circuits of each printed circuit board 40 are connected by a connection tool such as a connector. In this case, when each printed circuit board 40 is supported by the column 34, each printed circuit board 40 is maintained in a flat state, which contributes to an appropriate connection. Moreover, that each printed circuit board 40 is maintained in a flat state means that light is emitted in the direction in which the LEDs 41 of each printed circuit board 40 are aligned, and an appropriate light distribution characteristic as a lighting fixture is realized.

  FIG. 4 shows a cross-sectional view in a direction perpendicular to the longitudinal direction of the tube 30 in the fluorescent lamp type LED lamp 20 according to the third embodiment. In the third embodiment, a configuration is adopted in which the second holding plates 33 and 33 in the second embodiment are removed, and the printed board 40 is held by the first holding plates 32 and 32 and the support posts 34. Also with this configuration, the same effect as in the second embodiment can be obtained.

  FIG. 5 shows a cross-sectional view in a direction perpendicular to the longitudinal direction of the tube 30 in the fluorescent lamp type LED lamp 20 according to the fourth embodiment. The shape of the tube 30 is changed to a flat plate 35 by cutting a part of the arc in a circular shape. A clamping piece 36 that clamps the printed circuit board 40 is formed at a portion close to the connecting portion between the flat plate 35 and the arc. This clamping piece 36 is long in the longitudinal direction like the first clamping plates 32, 32, and is formed by extrusion molding. The shape of the base 24 is formed in accordance with the cross-sectional shape. With this configuration, the same effect as that of the second embodiment can be obtained.

  FIG. 6 shows a cross-sectional view in a direction orthogonal to the longitudinal direction of the lamp body 21 in the fluorescent lamp type LED lamp 20 according to the fifth embodiment. The lamp body 21 is obtained by joining the flat plates 35 of the tube 30 of the fourth embodiment shown in FIG. 5 back to back. The shape of the base 24 is formed in accordance with the cross-sectional shape. Since the LED 41 in the tube 30 irradiates light in two directions that differ by 180 degrees, illumination with a wider light distribution is possible.

  FIG. 7 shows a cross-sectional view in a direction orthogonal to the longitudinal direction of the lamp body 21 in the fluorescent lamp type LED lamp 20 according to the sixth embodiment. In the tube 30, the flat plate 35 is formed on the diameter of a circle in the cross section of the tube 30. The shape of the base 24 is formed in accordance with the cross-sectional shape. Since the LED 41 in the tube 30 emits light in two directions different by 180 degrees, illumination by wide light distribution is possible without forming the flat plate 35 on a circular chord shorter than the diameter as shown in FIG.

  FIG. 8 is a plan view showing the first embodiment of the printed circuit board 40 used in each embodiment of the present invention. In the printed circuit board 40, a plurality of convex pieces 43 are formed at equal intervals on two sides (side on which the sandwiching plate 32 or the like is provided) in contact with the inner wall of the tube 30. The convex piece 43 has a wide root portion, is configured to be narrow toward the tip, and has a sawtooth shape inclined as a whole. The width W of the printed board 40 is configured to be slightly longer than the length of the chord in the tube 30 into which the printed board 40 is inserted.

  When the printed circuit board 40 having the above-described configuration is used, the convex piece 43 presses the inner wall 31 when the printed circuit board 40 is inserted into a predetermined position of the tube 30. Therefore, the printed circuit board 40 is appropriately fixed without being rattled after the insertion. It will be in the state.

  FIG. 9 is a plan view showing a second embodiment of the printed circuit board 40 used in each embodiment of the present invention. Instead of the sawtooth-shaped convex pieces 43, a plurality of square-shaped convex pieces 44 are formed at equal intervals. Also with this configuration, the same effect as that of the first embodiment can be obtained.

  In the embodiment shown in FIGS. 8 and 9, the convex piece 43 and the convex piece 44 can be formed by projecting horizontally from the side wall of the printed circuit board 40. Moreover, the convex piece 43 and the convex piece 44 can be formed by bending the tips thereof from the horizontal to the top or bottom. In this case, the tips of all the convex pieces 43 and the convex pieces 44 may be formed by bending the tip from the horizontal upward or downward, but alternately every predetermined number (for example, every other piece) from the horizontal. It may be formed by bending up and down.

  FIG. 10 is a plan view showing a third embodiment of the printed circuit board 40 used in each embodiment of the present invention. The printed circuit board 40 according to this embodiment includes an identification unit that can identify front and rear when inserted into a tube. In FIG. 10, two corners connected by one short side are greatly cut out to form a cutout portion 45, and the two corners connected by the other short side are cut out small to form a cutout portion. 46 is used as an identification means. In this case, for example, it is assumed that the tube 30 is inserted into the tube 30 as indicated by an arrow from the short side having the notch 45 greatly cut out. As a result, the printed circuit board 40 can be accurately inserted into the tube, and the printed circuit boards 40 are not erroneously connected or cannot be connected, thereby improving work efficiency.

  The printed circuit board 40 of the embodiment shown in FIG. 8 also includes identification means. That is, since the convex piece 43 is formed to be inclined, it is determined that the convex piece 43 and the side wall of the printed board 40 are inserted into the tube 30 as indicated by an arrow from the short side of the obtuse angle side. Can do. Although the printed circuit board 40 of the embodiment shown in FIG. 9 does not include an identification unit as it is, the interval between the convex pieces 43 is gradually changed along the longitudinal direction, or the width of the convex piece 43 is changed in the longitudinal direction. It can be used as a discriminating means by being gradually changed along. In either case, the same effects as those of the embodiment shown in FIG. 10 are obtained.

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Instrument body 20 Lamp 21 Lamp body 30 Tube 34 Prop

Claims (5)

A printed circuit board provided with LEDs on one side;
The tube inner wall is provided with holding means for holding the printed circuit board with the LED facing outward at a position closer to the inner wall side than the center of the tube. A fluorescent lamp-type LED lamp.   The fluorescent lamp type LED lamp according to claim 1, wherein the holding means includes a support column that protrudes from the inner wall of the tube and supports the printed circuit board surface on which the LED is not provided.   The cross-sectional shape in a direction perpendicular to the longitudinal direction of the tube is a circle or an ellipse, or a shape obtained by cutting a part of an arc in the circle or the ellipse and changing it to a flat plate. Fluorescent LED lamp. The fluorescent lamp type LED lamp according to any one of claims 1 to 3, wherein the printed circuit board includes an identification unit that can identify front and rear when the printed circuit board is inserted into the tube. An instrument body;
A socket disposed in the instrument body;
Power supply;
The fluorescent lamp type LED lamp of any one of Claims 1 thru | or 4 with which a nozzle | cap | die is supported by a socket, and receives electric power supply from an electric power supply source.

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