JP2016035935A - LED lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a long LED lighting device which achieves better visual quality.SOLUTION: An LED lighting device includes: a substrate; LED light emitting parts; a control circuit part; a translucent cover; and a support medium including a third surface forming an inclined angle with a second surface of the substrate and a pair of side parts, which separate from each other in a shorter direction perpendicular to a longitudinal direction and extend along two sides extending in the longitudinal direction, the support medium formed in a manner such that at least parts of the control circuit part are covered by the side parts. The support medium is formed by a material that does not transmit light emitted from the LED light emitting parts.SELECTED DRAWING: Figure 31

Description

  The present invention relates to an LED lighting device that accommodates a plurality of LED chips and is used, for example, for indoor floor lighting or wall lighting.

  FIG. 39 is a sectional view showing an example of a conventional LED lamp. The LED lamp 900 shown in the figure includes a long rectangular substrate 91, a plurality of LED chips 92 arranged in a line on the substrate 91, a tube 93 that accommodates the substrate 91, a terminal 94, and an LED chip. And a circuit 95 for lighting 92. On the substrate 91, wirings (not shown) connected to the plurality of LED chips 92 and the terminals 94 are formed.

  The LED lamp 900 is configured such that a plurality of LED chips 92 can emit light by fitting the terminal 94 into an insertion port of a socket for fluorescent lamps installed on the ceiling or the like. Since the LED chip 92 has low power consumption and a long life, if the LED lamp 900 is used as an alternative to the existing fluorescent lamp, improvement in cost and environment can be expected.

  However, since the LED lamp 900 has terminals 94 disposed at both ends in the longitudinal direction, when a plurality of LED lamps 900 are joined together in the longitudinal direction, the joint portion between the LED lamps 900 emits light. It was impossible. For this reason, when LED lamp 900 is connected and a long illuminating device is comprised, the dark part which does not light-emit along the longitudinal direction will line up intermittently, and it may give a complicated impression to what to see.

  In addition, in the plurality of LED chips 92 arranged in a row, a steep luminance distribution is generated around the row, and it is easy to feel dazzling. This becomes more noticeable as the number of LED chips 92 increases. As a result, there is a problem that it is difficult to achieve both an increase in the amount of light and a uniform luminance.

Japanese Utility Model Publication No. 6-54103

  The present invention has been conceived under the circumstances described above, and accommodates a long-sized LED illumination device having a better appearance, an LED lamp capable of realizing such an LED illumination device, and an LED lamp. The problem is to provide a lamp case suitable for the above. It is another object of the present invention to provide an LED module and an LED lighting device that can achieve uniform brightness as the entire light quantity increases.

  The LED lamp provided by the 1st side surface of this invention accommodates the some LED module arranged along the 1st direction, and the said some LED module, and the edge part in the said 1st direction is opening. And a plurality of end caps that seal both ends of the cylinder in the first direction, and each end cap diffuses while transmitting light from the plurality of LED modules. And has an emission surface that emits light in a direction orthogonal to the first direction.

  The LED lamp provided by the 2nd side surface of this invention is an LED lamp provided by the 1st side surface of this invention, The said cylinder is the one side in the 2nd direction orthogonal to the said 1st direction. A support member having a mounting surface on which the plurality of LED modules are mounted, and a diffusion cover that covers one side of the support member in the second direction and diffuses light from the plurality of LED modules. And the emission surface is formed on one side in the second direction.

  The LED lamp provided by the third aspect of the present invention is the LED lamp provided by the first or second aspect of the present invention, wherein each of the end caps diffuses light from the LED module. Is formed of a transparent resin to which is added.

  The LED lamp provided by the fourth aspect of the present invention is the LED lamp provided by the second or third aspect of the present invention, wherein the emission surface is a surface continuous with the outer peripheral surface of the diffusion cover. It is formed as follows.

  The LED lamp provided by the fifth aspect of the present invention is the LED lamp provided by any one of the first to fourth aspects of the present invention, wherein the plurality of LED modules are arranged at regular intervals. The distance between the end cap and the end cap in the first direction among the plurality of LED modules is shorter than the predetermined interval.

  The LED lamp provided by the 6th side surface of this invention is an LED lamp provided by the 5th side surface of this invention, The outer end surface in the said 1st direction of the said end cap, The said 1st direction The distance between the end cap and the nearest LED module is half of the fixed interval.

  The LED lamp provided by the seventh aspect of the present invention is the LED lamp provided by any one of the first to third aspects of the present invention, wherein each of the end caps is along the first direction. A connecting plate protruding inward of the cylindrical body, the connecting plate being formed with a threading hole extending in the first direction; and the end cap being inserted into the threading hole. It is attached to the cylinder via a screw, and the emission surface can be accommodated in the cylinder.

  The LED lamp provided by the eighth aspect of the present invention is the LED lamp provided by any one of the first to sixth aspects of the present invention, wherein the plurality of end caps are external in the first direction. A first end cap having an inclined surface that is inclined so as to be farther from the exit surface, and a second end cap having an inclined surface that is inclined so as to be closer to the exit surface in the outward direction in the first direction; Is included.

  The LED lamp provided by the ninth aspect of the present invention is the LED lamp provided by any one of the first to sixth aspects of the present invention, wherein each of the end caps is outward in the first direction. The male part which has the inclined surface which inclines so that it may approach the said output surface, and the female part which has the inclined surface which inclines so that it is far from the said output surface in the outward in the said 1st direction are provided.

  The LED lighting device provided by the tenth aspect of the present invention is configured by arranging at least two or more LED lamps provided by the first to sixth aspects of the present invention along the first direction. The end portions of the end caps of the two adjacent LED lamps in the first direction among the plurality of LED lamps are directly facing each other.

  The LED lighting apparatus provided by the eleventh aspect of the present invention is the LED lighting apparatus provided by the tenth aspect of the present invention, in the first direction of the end caps of the two adjacent LED lamps. The ends are in contact with each other.

  The LED illumination device provided by the twelfth aspect of the present invention is the LED illumination device provided by the eleventh aspect of the present invention, in which the emission surfaces of the two adjacent LED lamps are continuous with each other. ing.

  The LED lighting apparatus provided by the thirteenth aspect of the present invention is the LED lighting apparatus provided by the tenth aspect of the present invention, wherein each of the above-mentioned end caps of the two adjacent LED lamps A plate member in contact with the end cap is provided, and the plate member is formed so as to diffuse while transmitting light from the plurality of LED modules.

  The LED illumination device provided by the fourteenth aspect of the present invention is the LED illumination device provided by the thirteenth aspect of the present invention, wherein the plate member has a surface continuous with the exit surface of each end cap. ing.

  The LED lighting device provided by the fifteenth aspect of the present invention is configured by arranging at least two or more LED lamps provided by the seventh aspect of the present invention along the first direction. Among the LED lamps, the end portions of the end caps of two adjacent LED lamps in the first direction are in contact with each other.

  The LED lighting device provided by the sixteenth aspect of the present invention is configured by arranging at least two or more LED lamps provided by the eighth aspect of the present invention along the first direction. Of the LED lamps, two adjacent LED lamps each include the first end cap on one side in the first direction and the second end cap on the other side, and are adjacent to each other. Of the two LED lamps, the inclined surface of the first end cap of one LED lamp and the inclined surface of the second end cap of the other LED lamp face each other.

  The LED lighting device provided by the seventeenth aspect of the present invention is configured by arranging at least two or more LED lamps provided by the ninth aspect of the present invention along the first direction, and the adjacent ones. Of the two LED lamps, the female part of the end cap of one LED lamp and the male part of the end cap of the other LED lamp are engaged with each other.

  A lamp case provided by an eighteenth aspect of the present invention accommodates an LED lamp comprising a plurality of LED modules arranged along a first direction and a cylindrical body that accommodates the plurality of LED modules. And a body member having a pair of coupling portions at both ends in the first direction, and a termination member coupled to any one of the pair of coupling portions. It is characterized by having a wall surface that is detachable with respect to the pair of connecting portions and is perpendicular to the first direction.

  The lamp case provided by the nineteenth aspect of the present invention is the lamp case provided by the eighteenth aspect of the present invention, wherein the connecting portion is formed with a long hole extending long in the first direction. And the said termination | terminus member is connected with the said connection part via the volt | bolt member which penetrates the said long hole.

  The LED lighting device provided by the twentieth aspect of the present invention is housed in two or more lamp cases provided by the eighteenth or nineteenth aspects of the present invention, the lamp case, and the first case. Two or more LED lamps arranged along the direction, and an intermediate member connected to both of the two or more lamp cases adjacent to each other in the first direction. It is characterized by.

  An LED lighting device provided by a twenty-first aspect of the present invention includes an LED lamp provided by any one of two or more first to sixth aspects of the present invention arranged along the first direction. A lamp case provided by two or more of the eighteenth or nineteenth metal surfaces of the present invention that accommodates the plurality of LED lamps, and two of the two or more lamp cases that are adjacent in the first direction. An intermediate member connected to both of the lamp cases, and of the two or more LED lamps, the end portions of the end caps of the two adjacent LED lamps in the first direction face each other. It is characterized by being.

  The LED lighting apparatus provided by the twenty-second aspect of the present invention is the LED lighting apparatus provided by the twenty-first aspect of the present invention, in the first direction of the end caps of the two adjacent LED lamps. The ends are in contact with each other.

  The LED illumination device provided by the twenty-third aspect of the present invention is the LED illumination device provided by the twenty-second aspect of the present invention, in which the emission surfaces of the two adjacent LED lamps are continuous with each other. ing.

The LED lighting apparatus provided by the twenty-fourth aspect of the present invention is the LED lighting apparatus provided by the twenty-first aspect of the present invention, wherein each of the above-mentioned end caps of the two adjacent LED lamps A plate material in contact with the end cap is provided,
The plate material is formed so as to diffuse while transmitting light from the plurality of LED modules.

  The LED illumination device provided by the twenty-fifth aspect of the present invention is the LED illumination device provided by the twenty-fourth aspect of the present invention, in which the plate member has a surface continuous with the exit surface of each end cap. ing.

  The LED lighting device provided by the twenty-sixth aspect of the present invention contains two or more LED lamps according to claim 7 arranged along the first direction, and 2 containing the two or more LED lamps. The lamp case provided by the above-described eighteenth or nineteenth aspect of the present invention, and an intermediate member connected to both of the two or more lamp cases that are adjacent to each other in the first direction. The end portions of the end caps of the two adjacent LED lamps of the plurality of LED lamps in the first direction are in contact with each other.

  The LED lighting device provided by the twenty-seventh aspect of the present invention includes two or more LED lamps provided by the eighth aspect of the present invention arranged along the first direction, and the two or more LEDs. Connected to both the two or more lamp cases provided by the eighteenth or nineteenth aspects of the present invention for housing the lamp and the two lamp cases adjacent in the first direction among the two or more lamp cases. Of the two or more LED lamps, two adjacent LED lamps each include the first end cap on one side in the first direction and the other side. The second end cap is provided, the inclined surface of the first end cap of one of the two adjacent LED lamps, and the other LED run. Of the inclined surface of the second end cap they are characterized in that facing each other.

  The LED lighting device provided by the twenty-eighth aspect of the present invention includes two or more LED lamps provided by the ninth aspect of the present invention arranged along the first direction, and the two or more LEDs. 20. Two or more lamp cases according to claim 18 or 19 for housing a lamp; and an intermediate member connected to both of the two or more lamp cases adjacent to each other in the first direction. Among the two adjacent LED lamps, the female part of the end cap of one LED lamp and the male part of the end cap of the other LED lamp are engaged with each other.

  According to such a configuration, since the joint between the LED lamps allows light from the LED module to pass through, the LED illumination device is less likely to have a dark portion along the longitudinal direction. For this reason, the LED lighting device provided by the first aspect of the present invention can be connected to realize a long LED lighting device with better appearance.

  An LED module provided by a twenty-ninth aspect of the present invention includes a strip-shaped substrate and a plurality of LED chips disposed on the substrate, each of the plurality of LED chips being of the substrate. A plurality of columns arranged in the longitudinal direction and spaced apart in the lateral direction of the substrate are formed, and adjacent columns among the plurality of columns are included in these columns. The plurality of LED chips are arranged in a staggered arrangement shifted in the longitudinal direction of the substrate.

  The LED module provided by the thirtieth aspect of the present invention is the LED module provided by the twenty-ninth aspect of the present invention, wherein the plurality of LED chips are oblong light emitting surfaces as viewed in the thickness direction of the substrate. The plurality of light emitting units are arranged so that the long side of the light emitting surface is along the longitudinal direction of the substrate.

  The LED module provided by the thirty-first aspect of the present invention is the LED module provided by the thirty-third aspect of the present invention, wherein, in each of the rows, the plurality of light emitting portions are longer than the long side of the light emitting surface. They are lined up at regular intervals with short intervals.

  The LED module provided by the thirty-second aspect of the present invention is the LED module provided by the thirty-ninth aspect of the present invention, wherein the plurality of LED chips are oblong light emitting surfaces in the thickness direction of the substrate. The plurality of light emitting units are arranged such that the short side of the light emitting surface is along the longitudinal direction of the substrate.

  The LED module provided by the thirty-third aspect of the present invention is the LED module provided by any one of the twenty-ninth to thirty-first aspects of the present invention, wherein the plurality of rows are two rows.

  An LED lighting device provided by a thirty-fourth aspect of the present invention includes an LED module provided by any one of the twenty-ninth to thirty-third aspects of the present invention and a longitudinal direction of the substrate while supporting the substrate. An elongated support member extending along the diffusion member, and a diffusion cover that is connected to the support member, covers the plurality of LED chips, diffuses light from the plurality of LED chips, and emits the light to the outside. The diffusion cover includes a portion where the distance from the LED chip is the smallest in the longitudinal direction of the substrate, and the degree of diffusion of light from the plurality of LED chips is higher than the average of the entire diffusion cover. It is characterized by having a strong strong diffusion part.

  The LED illumination device provided by the thirty-fifth aspect of the present invention is the LED illumination device provided by the thirty-fourth aspect of the present invention, wherein the diffusion cover is separated from the LED chip in the longitudinal direction of the substrate. The closer the distance is, the thicker the film is formed.

  The LED lighting apparatus provided by the thirty-sixth aspect of the present invention is the LED lighting apparatus provided by the thirty-fourth aspect of the present invention, wherein the strong diffusion part is a part of the diffusion cover other than the strong diffusion part. It is made of a material that diffuses light from the LED chip more strongly than the above material.

  The LED lighting apparatus provided by the thirty-seventh aspect of the present invention is the LED lighting apparatus provided by the thirty-fourth aspect of the present invention, wherein the strong diffusion portion is laminated on the main body of the diffusion cover and the main body. Further, it is constituted by a diffusion member that diffuses light from the plurality of LED chips.

  The LED illumination device provided by the thirty-eighth aspect of the present invention is the LED illumination device provided by any one of the thirty-fourth to thirty-seventh aspects of the present invention, wherein the LED chip is mainly in the thickness direction of the substrate. The diffusion cover has an elliptical shape in which the outer peripheral shape of the diffusion cover is centered on the LED chip and the thickness direction of the substrate is the minor axis direction when viewed in the longitudinal direction of the substrate. is there.

  In such a configuration, a portion near the LED chip in the diffusion cover diffuses light from the LED chip more strongly than a portion far from the LED chip, and transmits less light. Therefore, it is difficult for a difference in the intensity of light after passing through the diffusion cover between the part far from the LED chip and the part near the LED chip. Therefore, according to the second aspect of the present invention, the brightness can be further uniformed by the diffusion cover, and the appearance during light emission can be improved.

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

It is a principal part perspective view which shows the LED lamp based on 1st Embodiment of this invention. It is an expansion perspective view of the end cap shown in FIG. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which follows the IV-IV line of FIG. It is a top view which shows the LED lighting apparatus which combined the LED lamp shown in FIG. It is a figure which shows the connection part of the LED lighting apparatus shown in FIG. It is a top view which shows another Example of the LED lighting apparatus shown in FIG. It is sectional drawing which shows the LED lamp based on 2nd Embodiment of this invention. It is a top view of the end cap shown in FIG. It is sectional drawing which shows the LED lighting apparatus which combined the LED lamp shown in FIG. It is a top view which shows the connection part of the LED lighting apparatus which combined the LED lamp based on 3rd Embodiment of this invention. It is sectional drawing which follows the XII-XII line | wire of FIG. It is a top view which shows the connection part of the LED lighting apparatus which combined the LED lamp based on 4th Embodiment of this invention. It is sectional drawing which follows the XIV-XIV line | wire of FIG. It is a side view which shows an example of the lamp case in this invention. It is a figure which shows the state which integrated the LED lamp in the lamp case shown in FIG. 15, and was attached to the ceiling. It is a figure which shows the state which assembled the LED lamp in the lamp case shown in FIG. It is sectional drawing which follows the XVIII-XVIII line of FIG. It is sectional drawing which follows the XIX-XIX line | wire of FIG. It is a principal part enlarged view of FIG. It is the top view to which a part of lamp case shown in FIG. 15 was expanded. It is the bottom view to which a part of lamp case shown in FIG. 15 was expanded. It is the figure which expanded one edge part of the main-body member shown in FIG. It is the figure which expanded the other edge part of the main-body member shown in FIG. It is a figure which shows the connection part of the some lamp case in FIG. It is a figure for demonstrating the effect of the lamp case of this invention. It is a figure for demonstrating the 1st modification of a lamp case. It is a figure for demonstrating the 2nd modification of a lamp case. It is a top view of the LED module based on 1st Embodiment of this invention. It is sectional drawing which shows the light emission part of the LED module shown in FIG. It is sectional drawing of the LED lighting apparatus provided with the LED module of FIG. It is principal part sectional drawing of the LED lighting apparatus shown in FIG. It is a top view of the LED module based on 2nd Embodiment of this invention. It is a top view of the LED module based on 3rd Embodiment of this invention. It is principal part sectional drawing of the LED lighting apparatus based on 4th Embodiment of this invention. It is principal part sectional drawing of the LED lighting apparatus based on 5th Embodiment of this invention. It is principal part sectional drawing of the LED lighting apparatus based on 6th Embodiment of this invention. It is principal part sectional drawing of the LED lighting apparatus based on 7th Embodiment of this invention. It is sectional drawing which shows an example of the conventional LED lamp.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 4 show an LED lamp according to a first embodiment of the present invention. The LED lamp 501 of the present embodiment includes a cylindrical body 1 formed to extend in the x direction, a plurality of LED modules 2 housed in the cylindrical body 1, and an end cap attached to an end of the cylindrical body 1. 3, two mounts 4, and a power conversion unit 5. The LED lamp 501 is configured to mainly illuminate one side in the z direction with light from the plurality of LED modules 2 housed therein, and is used to illuminate a floor surface, for example, attached to a ceiling or the like. It is done.

  The cylinder 1 includes a support member 11 and a diffusion cover 12. As shown in FIG. 3, the support member 11 is for supplying power to the LED modules 2 while supporting the plurality of LED modules 2, and includes a substrate 111 and a bracket 112.

  The substrate 111 has a strip shape in which the x direction is the longitudinal direction and the y direction is the width direction, and is made of, for example, glass epoxy resin. The substrate 111 has a constant thickness in the z direction, and includes a mounting surface 111a on one side in the z direction. For example, 288 LED modules 2 are mounted on the mounting surface 111a, and a wiring pattern (not shown) for lighting these LED modules 2 is formed.

  As shown in FIG. 3, the bracket 112 includes a base portion 113 and a pair of outer portions 114. Base portion 113 and outer portion 114 are made of, for example, aluminum. The base portion 113 has a U-shaped cross section, and the substrate 111 is attached to the outside of the bottom surface. The outer portion 114 has a shape that covers substantially one side portion of the base portion 113 and the edge in the y direction of the substrate 111. The base portion 113 and the outer portion 114 are fastened by a plurality of screws 13.

  Each outer portion 114 is formed with a locking groove 114a that is recessed toward the other side in the z direction. The locking groove 114a is formed over substantially the entire length of each outer portion 114 in the x direction. Further, each outer portion 114 has a bulging portion 114b protruding in the y direction from the vicinity of one end portion in the y direction, and a locking groove 114c recessed in the other side in the z direction formed in each bulging portion 114b. And a locking surface 114d facing the bottom surface of the locking groove 114c. The bulging portion 114b, the locking groove 114c, and the locking surface 114d are formed over substantially the entire length of each outer portion 114 in the x direction.

  As shown in FIG. 1, the diffusion cover 12 has a strip shape with an arc cross section extending in the x direction, and is formed of, for example, a transparent polycarbonate resin to which a diffusion material such as mercury chloride is added. Such a diffusion cover 12 transmits the light from the LED module 2 while diffusing it. As shown in FIG. 3, the diffusion cover 12 includes a locking piece 12a at one end edge in the y direction and a locking piece 12b at the other end edge. The locking piece 12a and the locking piece 12b are formed so as to protrude inward in the y direction, and each have a surface that comes into contact with the locking surface 114d. The locking piece 12b further includes a portion protruding toward the other side in the z direction, and has a shape that fits into the locking groove 114c. The diffusion cover 12 is supported by pushing the locking piece 12a into the locking groove 114c on the other side in the y direction with the locking piece 12b fitted in the locking groove 114c on the one side in the y direction. Fixed to.

  Each LED module 2 incorporates an LED chip and is configured to be electrically connected to a wiring pattern (not shown) formed on the mounting surface 111a and to emit light mainly toward one side in the z direction.

  The plurality of LED modules 2 are mounted on the mounting surface 111a so as to be arranged at equal intervals along the x direction. In the present embodiment, as shown in FIG. 4, the distance between the adjacent end portions in the x direction of two adjacent LED modules 2 is defined as an interval 81 between the LED modules 2. Among the plurality of LED modules 2, the LED module 2 positioned at the extreme end on the one side in the x direction has a distance 82 shorter than the distance 81 from the one end in the x direction of the support member 11. It is arranged so as to be at a distant position. Among the plurality of LED modules 2, the LED module 2 positioned at the extreme end on the other side in the x direction has an end on the other side located at a distance 82 from the other end in the x direction of the support member 11. Are arranged as follows.

The end cap 3 is a component for preventing dust and the like from entering the inside of the cylindrical body 1 and is formed so as to seal an end portion in the x direction of the cylindrical body 1 as shown in FIG. One end of the end cap 3 in the z direction has an arcuate outer periphery so as to follow the shape of the diffusion cover 12. FIG. 2 is a perspective view of the end cap 3 and the outer periphery of the diffusion cover 12 is indicated by a two-dot chain line. The end cap 3 is installed so that no gap is generated between the end cap 3 and the end cap 3 as shown in FIG. And a pair of connecting plates 32 protruding. The pair of connecting plates 32 are formed so as to be parallel to each other while being separated in the y direction, and are in contact with the inner side surface of the base portion 113 of the bracket 112 as shown in FIG. Furthermore, the pair of connecting plates 32 are formed with screw through holes 32a penetrating in the y direction, and the screws 13 are passed through the screw through holes 32a, so that the pair of connecting plates 32 are connected to the support member 11. It is fixed. As shown in FIG.

The cap 3 has a certain thickness 83 in the x direction. This thickness 83 is, for example, about 1.5 mm.

  Similarly to the diffusion cover 12, the end cap 3 is formed of a transparent polycarbonate resin to which a diffusion material such as mercury chloride is added. Such an end cap 3 diffuses and transmits light from the LED module 2. The ratio of the diffusing material in the end cap 3 is approximately the same as the ratio of the diffusing material in the diffusion cover 12.

  In the present embodiment, the end portion on the other side in the x direction of the end cap 3 attached to one side in the x direction of the cylindrical body 1 is in close contact with the end portion on the one side in the x direction of the support member 11. Further, an end portion on one side in the x direction of the end cap 3 attached to the other side in the x direction of the cylindrical body 1 is in close contact with an end portion on the other side in the x direction of the support member 11. Furthermore, the distance 82 is set so that a length 84 obtained by adding the distance 82 and the thickness 83 shown in FIG. 4 is half of the interval 81 between the LED modules 2.

  Each mount 4 is a component used when the LED lamp 501 is fixed to a ceiling, a wall, or the like, and includes a base metal fitting 41 and a holder 42. The base metal fitting 41 is formed by, for example, drilling and bending a metal plate, and includes a hole 41a for passing a screw. As shown in FIG. 1, the hole 41 a is formed in a T shape that combines a long hole extending in the y direction and a long hole extending in the x direction. For this reason, the position of the base metal fitting 41 can be adjusted by the size of the hole 41a even after being attached to the ceiling or wall using screws.

  The holder 42 is formed, for example, by bending a metal plate, and as shown in FIG. 3, a pair of locking pieces 42a, a pair of flexible portions 42b, and a pair of possible pieces It has the connection part 42c which connects the bending part 42b. The flexible part 42b is configured to support the locking piece 42a. When an external force is applied to the pair of flexible portions 42b, the pair of locking portions 42b can be elastically deformed in a direction in which the pair of locking pieces 42a approach and separate from each other. The pair of locking pieces 42a is a portion that engages with the locking groove 114a of the support member 11, and is inclined so that the distance from each other decreases toward the upper side in FIG.

  The power conversion unit 5 performs a function of converting commercial AC 100V power into DC 36V, for example, and is accommodated in the support member 11. The power conversion unit 5 includes a case 51, a power supply substrate 52, and a plurality of electronic components 53. The case 51 has a U-shaped cross section, and is made of metal, for example. The power supply substrate 52 is fixed to the case 51, and a plurality of electronic components 53 are mounted thereon. The plurality of electronic components 53 are, for example, a transformer, a rectifier, and a transistor for constant current control. A connector 54 extends from the power converter 5. This connector 54 is connected to, for example, a connector provided on the ceiling or wall where the LED lamp 501 is installed.

  In the present embodiment, two power conversion units 5 are provided, and power is supplied to 144 LED modules 2 from one power conversion unit 5. These 144 LED modules 2 are divided into 12 groups in which 12 connected in series with each other are taken as one set. These groups are connected in parallel. As a result, each LED chip in each LED module 2 is supplied with DC power having a voltage of about 3 V and a current of about 20 mA.

  Next, the operation of the LED lamp 501 will be described.

  In such an LED lamp 501, as shown in FIG. 4, light from the LED module 2 installed mainly at the end in the x direction is incident on the end cap 3. Since the end cap 3 is made of the resin to which the diffusing material is added as described above, the light incident on the end cap 3 is diffused, and a part thereof is emitted from the emission surface 31 in the z direction. For this reason, when the LED lamp 501 is installed and lit, for example, on the ceiling, the end of the LED lamp 501 in the x direction seems to be shining in the same manner as other portions from the person looking up from below.

  FIG. 5 is a plan view showing a part of an LED lighting device 601 configured by combining a plurality of the LED lamps 501 described above. As shown in FIG. 5, in the LED lighting device 601, the plurality of LED lamps 501 are attached to the ceiling or wall so as to be aligned in a line along the x direction. FIG. 6 is an enlarged view showing a joint portion between adjacent LED lamps 501, and the diffusion cover 12 is omitted to represent the inside of the LED lamp 501.

  As shown in FIG. 6, in the LED lighting device 601, the end caps 3 of the adjacent LED lamps 501 are in contact with each other, and the interval between the LED modules 2 installed across the two end caps 3 is just the interval 81. It is supposed to be. Since the end caps 3 of the adjacent LED lamps 501 are in contact with each other, the light passing through one end cap 3 is diffused by the other end cap 3. For this reason, in the LED lighting device 601, a part of the light emitted from the LED lamp 501 in the x direction is emitted in the z direction from the emission surface 31 of the end cap 3 of the adjacent LED lamp 501. Therefore, the LED lighting device 601 can effectively use the light from the LED module 2.

  As described above, since the end cap 3 scatters the light from the LED module 2 while transmitting it, the exit surface 31 appears to shine. For this reason, in the LED lighting device 601, the joint portion of the adjacent LED lamps 501 does not become dark. Therefore, by combining the LED lamps 501, it is possible to realize a long LED lighting device 601 with a better appearance that extends longer in the x direction.

  In the present embodiment, even in the joint portion between the adjacent LED lamps 501, the interval between the LED modules 2 is the same interval 81 as the other portions, so the joint portion does not become darker than the other portions. , Can look better.

  7 to 26 show another embodiment of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

  FIG. 7 is a plan view showing a part of an LED lighting device 602 configured by combining a plurality of the LED lamps 501 described above. The LED lighting device 602 shown in FIG. 7 is provided with a plate material 6 between end caps 3 of adjacent LED lamps 501, and other configurations are the same as those of the LED lighting device 601 shown in FIGS. 5 and 6. .

  As shown in FIG. 7, the plate 6 is sandwiched between the right end surface of the end cap 3 on the left side in the drawing in the x direction and the left end surface of the end cap 3 on the right side in the drawing. The plate 6 is formed so that the shape in the x-direction view matches the shape of the end cap 3 in the x-direction view, and includes an emission surface 61 that is continuous with the emission surfaces 31 of the left and right end caps 3 in FIG. Yes. The plate 6 is made of, for example, a transparent polycarbonate resin to which a diffusion material such as mercury chloride is added. The ratio of the diffusing material in the plate 6 is about the same as the ratio of the diffusing material in the diffusion cover 12. Such a plate member 6 diffuses and transmits the light that has passed through the end cap 3 out of the light from the LED module 2. Part of the light diffused inside the plate 6 is emitted from the emission surface 61 in the z direction.

  In such an LED lighting device 602 as well, the plate material 6 appears to emit light in the same manner as the end cap 3, so that the joint portion of the adjacent LED lamps 501 does not become dark. Therefore, the LED lighting device 602 is more attractive.

  In order to preferably realize the configuration shown in FIG. 7, when a plurality of types of plate materials 6 having different thicknesses in the x direction are prepared in advance and a gap is generated between the left and right end caps 3 in FIG. 7, It is preferable to select a plate material 6 having a thickness corresponding to the gap and fit it into the gap.

  In addition, also in the LED lighting apparatus 601, when arranging many LED lamps 501 in a line, the case where a clearance gap may arise between the edge parts of the adjacent LED lamp 501 may occur. In such a case, it is possible to prevent the joint portion of the LED lamp 501 from becoming dark by using the plate material 6 in the LED lighting device 602 together.

  In the above-described embodiment, the end cap 3 is installed outside the diffusion cover 12 so that the emission surface 31 is continuous with the outer peripheral surface of the diffusion cover 12, but the emission surface 31 is inside the diffusion cover 12. It is good also as a structure by which the end cap 3 is installed inside the diffusion cover 12 so that a surrounding surface may be contact | connected. In this case, the length of the diffusion cover 12 in the x direction is longer than the length of the support member 11 in the x direction by twice the thickness of the end cap 3 in the x direction.

  FIG. 8 shows a state in the vicinity of an end portion of the LED lamp according to the second embodiment of the present invention. The LED lamp 502 shown in FIG. 8 differs from the LED lamp 501 in the shape of the end cap 3 and the length of the diffusion cover 12 in the x direction, and the other configurations are the same. FIG. 9 shows a view of the end cap 3 in the LED lamp 502 as seen from the inside of the LED lamp 502. FIG. 10 shows a connecting portion of an LED lighting device 603 configured by combining a plurality of LED lamps 502. In the LED lighting device 603, the plurality of LED lamps 502 are attached to the ceiling or wall so as to be aligned in a line along the x direction. In FIG. 10, the interval between the LED lamps 502 is intentionally enlarged for the sake of explanation.

  The diffusion cover 12 in this embodiment is formed to be longer in the x direction than the support member 11. Further, in the present embodiment, the end cap 3 is disposed inside the diffusion cover 12. The end cap 3 of the present embodiment includes an umbrella portion 33 near the lower end in FIG. As shown in FIG. 8, the umbrella portion 33 is formed so as to extend from the outer peripheral edge of the end cap 3 to the inside of the cylindrical body 1 along the x direction. The outer peripheral surface of the umbrella portion 33 is integrated with the emission surface 31. In the present embodiment, the exit surface 31 of the end cap 3 is in contact with the inner peripheral surface of the diffusion cover 12.

  Furthermore, the screw through hole 32a formed in the connecting plate 32 of the present embodiment is a long hole extending long in the x direction. Therefore, the end cap 3 can be moved in the x direction by the length of the screw through hole 32a. When the end cap 3 is pulled out of the cylinder 1 along the x direction, the outer peripheral surface of the umbrella portion 33 is exposed to the outside of the diffusion cover 12.

  In the LED lighting device 603 in which the LED lamps 502 are connected, when a gap is generated between the LED lamps 502 as shown in FIG. The gap can be closed with the umbrella 33. Since the umbrella part 33 is a part of the end cap 3, it transmits the light from the LED module 2 while diffusing it. For this reason, when the LED illumination device 603 is viewed from below in the z direction, the umbrella portion 33 appears to emit light. Therefore, the LED lighting device 603 has a configuration in which a dark place hardly occurs along the x direction.

  FIG. 11 and FIG. 12 show the state of the joint portion of the LED lighting device using the LED lamp according to the third embodiment of the present invention. The LED lamp 503 shown in FIGS. 11 and 12 includes an end cap 3A at one end in the x direction and an end cap 3B at the other end, and the other configurations are the same as those of the LED lamp 501.

  The end cap 3A is formed so as to be thicker in the x direction toward the lower side in the z direction in FIG. 12, and includes an inclined surface 31a. The inclined surface 31a is inclined so as to move away from the emitting surface 31 in the z direction toward the outer side in the x direction. The end cap 3B is formed so as to be thinner in the x direction toward the lower side in the z direction in FIG. 12, and includes an inclined surface 31b. The inclined surface 31b is inclined so as to approach the emitting surface 31 in the z direction toward the outer side in the x direction.

  In the LED lighting device 604 in which such LED lamps 503 are joined, the end cap 3A and the end cap 3B face each other at the joint portion as shown in FIGS. Although it is desirable to arrange a plurality of LED lamps 503 so that the inclined surface 31a and the inclined surface 31b are in contact with each other, it is difficult to arrange a plurality of LED lamps 503 without gaps completely. In the present embodiment, even when a gap is generated between the end cap 3A and the end cap 3B, when the LED lighting device 604 is viewed from below in the z direction in FIG. For this reason, the LED illumination device 604 has a configuration in which a dark place hardly occurs along the x direction.

  FIG. 13 and FIG. 14 show the state of the joint portion of the LED illumination device using the LED lamp according to the fourth embodiment of the present invention. The LED lamp 504 shown in FIGS. 13 and 14 includes an end cap 3 </ b> C instead of the end cap 3, and the other configuration is the same as the LED lamp 501.

  The end cap 3 </ b> C includes a male part 34 formed on one side in the y direction and a female part 35 formed on the other side in the y direction. The male part 34 has an inclined surface 34a that is inclined so as to approach the emitting surface 31 in the z direction toward the outside in the x direction. It is formed to bulge outward in the x direction as it approaches the exit surface 31 in the z direction, and bulges outward in the x direction toward the center in the y direction. The female part 35 has an inclined surface 35a that inclines so that the outer side in the x direction is farther from the emission surface 31 in the z direction. The female part 35 is formed so as to be recessed inward in the x direction as it approaches the emission surface 31 in the z direction so as to be fitted to the male part 34, and inward in the x direction toward the center in the y direction. Indented.

  In the LED lighting device 605 formed by arranging the LED lamps 504 in the x direction, as shown in FIGS. 13 and 14, the male part 34 and the female part of the end cap 3 </ b> C attached to the end of the LED lamp 504 to be connected. 35 mesh with each other. Although it is desirable to install a plurality of LED lamps 504 so that the end caps 3C are in contact with each other, a gap may be formed between the end caps 3C when a large number of LED lamps 504 are arranged. Even in such a case, it is the inclined surface 35 a that can be seen from the gap between the end caps 3 </ b> C of the present embodiment, and it looks shining similarly to the emission surface 31. Moreover, since the end cap 3C of this embodiment can be attached to both ends of the cylindrical body 1, it is economical.

  15 to 26 show an example of the lamp case according to the present invention. A lamp case 650 shown in FIG. 15 is a member used to fix the LED lamps 501 to 504 to the ceiling instead of the mount 4 in the above-described embodiment. In FIG. 15, an LED lamp 501 is shown for reference. FIG. 16 shows a state in which the LED lamp 501 is accommodated in the lamp case 650 and attached to the ceiling 750. Further, as shown in FIG. 17, an LED illumination device 606 configured by arranging a plurality of lamp cases 650 each containing an LED lamp 501 in the x direction is shown. Note that the LED lighting device 606 corresponds to the LED lighting device 601 in which the mount 4 is replaced with a lamp case 650.

As shown in FIG. 15, the lamp case 650 includes a main body member 71, a connector housing portion 72, a termination member 73, and an intermediate member 74. The terminal member 73 and the intermediate member 74 are attached to the main body member 71 via a bolt member 75 as shown in FIG. The bolt member 75 is a male screw, for example. It is assumed that the terminal member 73 and the intermediate member 74 are painted in the same color as the main body member 71.

  The main body member 71 has a U-shaped cross section that opens to one side in the z direction, is formed to extend long in the x direction, and has a connecting portion 711 at one end in the x direction and the other end. A connecting portion 712 is provided. As shown in FIG. 23, the connection portion 711 is formed with a pair of long holes 711a extending long in the x direction. As shown in FIG. 24, the connecting portion 712 is formed with a pair of long holes 712a extending long in the x direction. The shapes of the long holes 711a and 712a are the same, and both can pass the bolt member 75. The main body member 71 includes protrusions 713 protruding in the y direction from both side edges in the y direction. The protrusion 713 has a shape having a groove extending in the x direction. As shown in FIGS. 16 and 18, the protrusion 713 is exposed outside without entering the ceiling 750 when the lamp case 650 is attached to the ceiling 750. The main body member 71 is fixed along the ceiling 750 by the protrusions 713 coming into contact with the ceiling 750. For this reason, the lamp case 650 is attached to the ceiling 750 without being inclined with respect to the ceiling 750, and the LED lamp 501 can be preferably accommodated.

  As shown in FIG. 19, a through hole 71 a is provided between the main body member 71 and the connector housing portion 72. The through hole 71 a is used to pass a cable connecting the connector 54 and the power converter 5. The connector accommodating portion 72 accommodates the connector 54. The connector 54 is connected to a power supply device provided in the ceiling 750.

  The termination member 73 is formed by bending a metal plate, and is a member that can be attached to and detached from the connecting portion 711 and the connecting portion 712. As shown in FIGS. 18 and 20, the end member 73 includes plate portions 731 and 732 that are orthogonal to each other, a pair of inner wall portions 733, an outer plate portion 734, and standing walls 735 and 736.

  The plate portion 731 is formed in a rectangular shape as viewed in the z direction, and is a portion that is fixed to the connecting portions 711 and 712 of the main body member 71 via the bolt member 75. The plate portion 731 is formed with a pair of bulged portions 731a whose thickness in the z direction is thicker than the periphery. A pair of screw receiving holes that fit into the bolt member 75 are provided in the pair of bulging portions 731a. A female screw corresponding to the male screw formed on the bolt member 75 is formed in the pair of screw receiving holes.

  The plate portion 732 extends from the end portion of the plate portion 731 in the x direction, and is formed in a rectangular shape when viewed in the x direction. As shown in FIG. 20, the plate portion 732 is a portion that closes the end portion of the main body member 71 in the x direction, and has a wall surface 732a perpendicular to the x direction. The pair of inner wall portions 733 are formed so as to protrude in the x direction from both side edges of the plate portion 732 in the y direction. The length of the pair of inner wall portions 733 in the x direction is longer than the length of the long holes 711a and 712a in the x direction.

  The outer plate portion 734 extends from the lower end in FIG. 20 of the plate portion 732 and the pair of inner wall portions 733, and is formed so as to be seen as a frame shape in which the protruding portion 713 is extended in the z-direction view as shown in FIG. Has been. The standing walls 735 are formed so as to rise from both end edges in the y direction of the outer plate portion 734 and to extend along both end edges in the y direction of the projecting portion 713. As shown in FIG. 18, the position of the upper end portion in the figure of the standing wall 735 in the z direction coincides with the position of the upper end portion in the figure of the projecting portion 713 in the z direction. The standing wall 736 stands up so as to face the plate portion 732 from the end portion in the x direction of the outer plate portion 734. The standing wall 736 is connected to the standing wall 735 at both ends in the y direction. The standing walls 735 and 736 have an appearance such that the protruding portion 713 is extended.

  The intermediate member 74 is formed by bending a metal plate, and is a member that can be attached to and detached from the connecting portion 711 and the connecting portion 712. The intermediate member 74 is formed in a U-shaped cross section so as to overlap the outer periphery of the main body member 71. The intermediate member 74 is a member used when connecting a plurality of lamp cases 650 as shown in FIG. The intermediate member 74 includes an edge portion 741 that fits into a groove provided in the protruding portion 713.

  The intermediate member 74 includes two pairs of bulging portions 74a that have a thickness in the z direction that is thicker than the periphery. The two pairs of bulging portions 74a are provided with screw receiving holes that fit into the bolt members 75, respectively. These screw receiving holes are also provided with female screws corresponding to the male screws provided on the bolt member 75. As shown in FIG. 25, the two pairs of bulging portions 74a are provided at positions that overlap with the long holes 711a and 712a when the connecting portions 711 and 712 are joined together.

  Next, the operation of the lamp case 650 will be described with reference to FIG.

  When a plurality of lamp cases 650 are arranged in the x direction and attached to the ceiling 750, if the ends of the adjacent lamp cases 650 are brought into close contact with each other, a gap is generated between the ends of the other adjacent lamp cases 650. Can happen. FIG. 26 shows a state where the joint portion is looked up from the floor when a gap is generated between the main body members 71 of the adjacent lamp cases 650. In FIG. 26, the LED lamp 501 is omitted.

  In the present embodiment, as shown in FIG. 26, even when there is a gap between the connecting portions 711 and 712 of the adjacent main body member 71, by shifting the position of the bolt member 75 in the long holes 711a and 712a, The intermediate member 74 can be attached to the connecting portions 711 and 712. Furthermore, as shown in FIG. 26, since the intermediate member 74 can be seen from the gap between the main body members 71, not the ceiling surface, it is possible to suppress the deterioration of the appearance.

  Further, the terminal member 73 can also be shifted in the x direction by shifting the position of the bolt member 75 in the long holes 711a and 712a. For this reason, even if it cannot cope with the adjustment by the intermediate member 74 described above, it is possible to cope by shifting the terminal members 73 of the lamp cases 650 at both ends in the x direction.

  FIG. 27 shows a first modification of the lamp case 650. In this modification, a circular screw hole 711b is provided instead of the long hole 711a. Other configurations are the same as those of the lamp case 650 shown in FIGS. FIG. 27 shows a state in which such lamp cases 650 are arranged as in FIG. As shown in FIG. 27, even when there is a gap between the connecting portions 711 and 712 of the adjacent main body member 71, the intermediate member 74 is connected to the connecting portion 711 by shifting the position of the bolt member 75 in the long hole 712a. , 712. Furthermore, since the intermediate member 74 can be seen from the gap between the main body members 71 instead of the ceiling surface, deterioration of the appearance can be suppressed.

  FIG. 28 shows a second modification of the lamp case 650. In this modification, a circular screw hole 712b is provided instead of the long hole 712a. Other configurations are the same as those of the lamp case 650 shown in FIGS. FIG. 28 shows a state in which such lamp cases 650 are arranged as in FIG. As shown in FIG. 28, even when there is a gap between the connecting portions 711 and 712 of the adjacent main body member 71, the intermediate member 74 is connected to the connecting portion 711 by shifting the position of the bolt member 75 in the long hole 711a. , 712. Furthermore, since the intermediate member 74 can be seen from the gap between the main body members 71 instead of the ceiling surface, deterioration of the appearance can be suppressed. Furthermore, adjustment can be performed by shifting the end member 73 in the x direction.

  The LED lamp, the lamp case, and the LED lighting device according to the present invention are not limited to the above-described embodiments. The specific configuration of each part of the LED lamp and the LED lighting device according to the present invention can be varied in design in various ways.

  For example, the number of LED modules 2 and the installation interval can be set as appropriate. In the embodiment described above, the LED modules 2 are arranged at regular intervals. However, even if the LED modules 2 are irregularly arranged, the end cap 3 is configured to diffuse while transmitting light. The effect of the present invention occurs. Further, the positional relationship between the LED module 2 positioned at the end in the x direction and the end portion of the support member 11 in the x direction is not limited to the above-described conditions. The LED module 2 positioned at the end in the x direction is positioned at the end of the support member 11 in the x direction so that the distance between the LED modules 2 is not excessively widened at the joint portion of the LED lamps 501 in the LED lighting device 601. It only has to be mounted so as to approach.

  Further, in the LED lighting devices 602 to 605, a lamp case 650 may be adopted instead of the mount 4. In the LED lighting devices 602 to 605, it is assumed that a gap is generated between the adjacent LED lamps 501 to 504. In such a case, there may be a gap between the adjacent lamp cases 650, but the intermediate member 74 having the same color as that of the main body member 71 can be seen from the gap between the lamp cases 650. For this reason, deterioration of the appearance can be prevented.

  29 and 30 show an LED module according to the first embodiment of the present invention. The LED module 511 of this embodiment includes a substrate 201 and a plurality of light emitting units 202.

  As shown in FIG. 29, the substrate 201 is made of glass epoxy, for example, and is formed in a strip shape. The substrate 201 has, for example, a longitudinal dimension of approximately 200 mm and a lateral dimension of approximately 20 mm. Although not particularly illustrated, a wiring pattern for mounting a plurality of light emitting units 202 is formed on one surface of the substrate 201.

  As shown in FIG. 29, the plurality of light emitting units 202 are mounted on one surface of the substrate 201, and are arranged in two rows 202A and 202B along the longitudinal direction thereof. In a state where one surface of the substrate 201 is viewed in the thickness direction, the light emitting unit 202 has a light emitting surface 220 having a long rectangular shape. All the light emitting units 202 are arranged so that the long side 220 a of the light emitting surface 220 is along the longitudinal direction of the substrate 201. The light emitting portions 202 in each row 202A, 202B are arranged at equal intervals with an interval 85 in the longitudinal direction of the substrate 201. The interval 85 is approximately the same size as the long side 220 a of the light emitting surface 220. The rows 202A and 202B are shifted by a half pitch in the longitudinal direction of the substrate 201. Thereby, the several light emission part 202 is a staggered arrangement. In the present embodiment, the interval 85 is approximately the same as the long side 220a of the light emitting surface 220, but the interval 85 may of course be longer than the long side 220a.

  As shown in FIG. 30, the light emitting unit 202 includes an LED chip 221, metal leads 222 and 223 that are spaced apart from each other, wires 224, and a resin package 225.

  The LED chip 221 has a structure in which, for example, an n-type semiconductor layer and a p-type semiconductor layer and an active layer sandwiched therebetween are stacked. For example, when the LED chip 221 is made of a GaN-based semiconductor, the LED chip 221 emits blue light. The LED chip 221 is mounted on the lead 222. The upper surface of the LED chip 221 is connected to the lead 223 via the wire 224. The leads 222 and 223 are bonded to the wiring pattern on the substrate 201. The resin package 225 is for protecting the LED chip 221 and the wire 224. The resin package 225 is formed of, for example, an epoxy resin having translucency with respect to the light from the LED chip 221. For example, a fluorescent material that emits yellow light when excited by blue light is mixed in the resin package 225. As a result, the light emitting unit 202 emits white light. In the resin package 225, one surface opposite to the surface facing the substrate 201 is a light emitting surface 220.

  FIG. 31 and FIG. 32 show an example of an LED lighting device including the LED module 511. The LED lighting device 611 of this embodiment includes a plurality of LED modules 511, a mount 203, a support member 204, a diffusion cover 205, and a power conversion unit 206. The LED lighting device 611 is used for the purpose of illuminating the floor surface, for example, in a state of being attached to an indoor ceiling surface, and is long in a direction penetrating the paper surface of the figure.

  As shown in FIG. 31, the mount 203 includes a main body 230 and a plurality of holders 231. The main body 230 has an elongated shape extending in a direction penetrating the paper surface of the figure, and is made of, for example, aluminum. The main body 230 is provided with a recess 230a. The recess 230a is for accommodating the LED module 511. The main body 230 has a curved surface having a curvature that is continuous with the concave portion 230a interposed therebetween.

  The main body 230 includes a base plate 310 and a wing 320. The base plate 310 is formed in a long and narrow plate shape with the direction passing through the paper surface of FIG. 31 as the longitudinal direction and the y direction as the width direction, and includes a plurality of bulging portions 311. Both end edges in the y direction of the base plate 310 are bent downward in the z direction in order to ensure rigidity. The plurality of bulging portions 311 are portions formed so as to protrude downward in the z direction, and are arranged so as to be separated from each other along a direction penetrating the paper surface of FIG. Each bulging part 311 is in contact with the wing part 320.

  The wing part 320 is formed in an umbrella shape as viewed in a direction penetrating the paper surface of FIG. 31, and has a bottom plate part 321, two wall parts 322, and a regulating part 323 inside. The bottom plate portion 321 is parallel to the base plate 310. The two wall portions 322 stand up in the z direction from both ends of the bottom plate portion 321 in the y direction. The bottom plate portion 321 and the two wall portions 322 constitute a recess 230 a for housing the LED unit 2. A holder 231, which is an elastic member, is disposed on the one side wall 322, and a regulating member 323 is formed on the other side wall 322. The restricting member 323 has a plate shape protruding in the y direction from the wall portion 322 and is perpendicular to the wall portion 322. For example, the regulating member 323 is installed over substantially the entire length of the wing portion 320 in a direction penetrating the paper surface of FIG.

  The holder 231 is formed by bending a metal plate, for example, and has a locking piece 231a, a flexible portion 231b, and a fixing portion 231c. As illustrated in FIG. 31, the locking piece 231 a is inclined so as to be farther from the LED module 511 in the y direction as it is farther from the bottom plate portion 321 in the z direction. The flexible portion 231b is inclined so as to approach the LED module 511 in the y direction as the distance from the bottom plate portion 321 increases in the z direction. The flexible portion 231b is configured to support the locking piece 231a at one end and to be connected to the fixing portion 231c at the other end, and is formed to be elastically curved and deformable. The fixing portion 231 c is a plate-like member provided so as to overlap the bottom plate portion 321, and is fixed to the wing portion 320 via a screw 331. Note that a plurality of the holders 231 are arranged along a direction penetrating the paper surface of FIG.

As shown in FIG. 31, the support member 204 is for supplying electric power to the plurality of LED modules 511 while supporting them. The plurality of LED modules 511 are supported by the support member 204 in a state of being aligned along the longitudinal direction.

  The support member 204 includes a base portion 241 and a pair of outer portions 242. Base portion 241 and outer portion 242 are made of, for example, aluminum. The base portion 241 has a U-shaped cross section, and a recess 410 for attaching the substrate 201 of the LED module 511 is formed outside the bottom surface of the base portion 241. The recess 410 is recessed upward in the z direction, and the substrate 201 is fitted therein. The outer portion 242 has a shape that covers substantially one side portion of the base portion 241 and the edge in the y direction of the substrate 201.

  Each outer portion 242 is formed with a locking groove 420. The locking groove 420 extends in a direction penetrating the paper surface of FIG. 31, and is recessed on the opposite side to the emitting direction of the LED module 511 in the z direction. The locking groove 420 on one side is a portion that engages with the locking piece 231 a of the holder 231. The other side locking groove 420 is a portion that engages with the restricting portion 323.

  In addition, a locking groove 421 is formed in one outer portion 242. The locking groove 421 extends in a direction penetrating the paper surface of FIG. 31, and is recessed on the opposite side to the emitting direction of the LED module 511 in the z direction. A locking groove 422 is also formed in the other outer part 242. The locking groove 422 also extends in a direction penetrating the paper surface of FIG. 31 and is recessed in the z direction on the opposite side to the emitting direction of the LED module 511.

  As shown in FIGS. 31 and 32, the diffusion cover 205 has an arcuate cross section extending in the direction penetrating the paper surface of the drawing, and is made of, for example, milky white resin that transmits light from the LED module 511 while diffusing. As shown in FIG. 31, locking pieces 251 and 252 are formed at both end edges of the diffusion cover 205. One locking piece 251 engages with the locking groove 421. The other locking piece 252 engages with the locking groove 422.

  As shown in FIG. 32, the central portion 205a of the diffusion cover 205 is an area having a certain width in the y direction, with the center just below the z direction of the LED module 511. The width in the y direction of the central portion 205a is formed to be longer than the width in the y direction in which the light emitting portions 202 are arranged in a staggered arrangement. The central part 205a corresponds to an example of a strong diffusion part that is a main part of the present invention.

  The power conversion unit 206 performs a function of converting commercial AC 100V power into DC 36V, for example, and is accommodated in the support member 204. The power conversion unit 206 includes a case 261, a power supply board 262, and a plurality of electronic components 263. The case 261 has a U-shaped cross section, and is made of metal, for example. Case 261 is used to fix power conversion unit 206 to base unit 241. The power supply board 262 is fixed to the case 261, and a plurality of electronic components 263 are mounted thereon. The plurality of electronic components 263 are, for example, a transformer, a rectifier, and a transistor for constant current control. A connector (not shown) extends from the power conversion unit 206. This connector is connected to a connector attached to the mount 203.

  In the present embodiment, a plurality of power conversion units 206 are provided, and power is supplied from one power conversion unit 206 to the light emitting units 202 of the plurality of LED modules 511. For example, each LED chip 221 is supplied with DC power having a voltage of about 3 V and a current of about 20 mA.

  Next, the operation of the LED module 511 and the LED lighting device 611 will be described.

In the LED module 511 of the present embodiment, a plurality of light emitting portions 202 arranged in a staggered manner form light emitting regions that expand to some extent in the longitudinal direction and the short direction of the substrate 201. Light from this light emitting region is irradiated while spreading to some extent not only in the longitudinal direction of the substrate 201 but also in the lateral direction.

  In addition, in the light emitting region, the light emitting units 202 constituting one column 202A are positioned between the light emitting units 202 constituting the other column 202B, and therefore do not easily overlap with the light from the other column 202B. As a result, the light emitting region including the two columns 202A and 202B is less likely to generate a sharply distributed luminance distribution, and forms a luminance distribution that gently spreads in a short direction of the substrate 201.

  That is, the light emitting region does not appear to shine in a concentrated manner in a linear shape, but appears to shine in a certain band. Therefore, the plurality of light emitting units 202 are not felt so dazzling. Therefore, according to the LED module 511, by arranging the plurality of light emitting units 202 in a staggered arrangement, the overall light quantity can be increased and the luminance can be made uniform.

  In the LED illumination device 611 of the present embodiment, the thicker the diffusion cover 205 is, the more light is diffused and the light transmittance is reduced. For this reason, the central portion 205a of the diffusion cover 205 has a smaller light transmittance than other regions. For example, the light transmittance in the central portion 205a is about 75%, and the light transmittance in other regions is about 85%.

  The diffusion cover 205 is formed such that the distance from the LED module 511 is the smallest at the central portion 205a, and the distance from the LED module 511 increases as the distance from the central portion 205a in the y direction increases. For this reason, the intensity of light from the LED module 511 reaching the central portion 205a is greater than the intensity of light from the LED module 511 reaching another area.

  According to the LED lighting device 611, by reducing the light transmittance in the central portion 205a where relatively strong light reaches, the light emitted from the central portion 205a and the light emitted from other regions are approximately the same. Of strength. For this reason, in the LED lighting device 611, unevenness of light emitted from the diffusion cover 205 at the time of lighting is suppressed, and it is visually recognized that the individual light emitting units 202 are arranged in a dotted manner or the rows 202A and 202B are formed. This can be prevented. Therefore, according to the LED illumination device 611, the luminance can be further uniformed by the diffusion cover 205, and the appearance at the time of lighting can be improved.

  FIGS. 33 and 34 show LED modules according to the second and third embodiments of the present invention, and FIGS. 35 to 10 show LED lighting devices according to the fourth to seventh embodiments of the present invention. 33 to 10, the same or similar components as those according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In LED module 512 based on 2nd Embodiment shown in FIG. 33, the light emission parts 202 of each row | line | column 202A, 202B are located in a line with the space | interval 86 at equal intervals in the longitudinal direction of the board | substrate 201. FIG. The interval 86 is shorter than the long side 220 a of the light emitting surface 220. The rows 202A and 202B are shifted by a half pitch in the longitudinal direction of the substrate 201. Accordingly, the plurality of light emitting units 202 are arranged in a staggered pattern at a narrower interval than that according to the first embodiment, and the number of the light emitting units 202 is increased. According to such a configuration, it is possible to further increase the total amount of light while achieving uniform luminance.

  In the LED module 513 based on the third embodiment shown in FIG. 34, all the light emitting units 202 are arranged so that the short side 220 b of the light emitting surface 220 is along the longitudinal direction of the substrate 201. The light emitting portions 202 in each row 202A, 202B are arranged at equal intervals with a distance 87 in the longitudinal direction of the substrate 201. The columns 202A and 202B are shifted by a half pitch in the longitudinal direction of the substrate 201, and the plurality of light emitting sections 202 are arranged in a staggered arrangement. According to such a configuration, the interval 87 between the light emitting units 202 in each column 202A, 202B can be set appropriately according to the directivity of the LED chip, and the luminance can be made uniform. In this embodiment, the interval 87 is considerably larger than the short side 220b of the light emitting surface 220, but the interval 87 may be shorter than the short side 220b. In such a case, the number of the light emitting units 202 can be increased, and the total light amount can be further increased.

  In the LED illuminating device based on 4th Embodiment shown in FIG. 35, the center part 205a of the spreading | diffusion cover 205 is formed in flat form. Even if such a diffusion cover 205 is used, unevenness of light emitted from the diffusion cover 205 can be suppressed.

  In the LED lighting device based on the fifth embodiment shown in FIG. 36, the diffusion cover 205 is formed so that the thickness gradually increases from the end toward the center in the y direction. Such a diffusion cover 205 is thicker as the distance from the LED module 511 is closer. Thereby, it is possible to further suppress unevenness of light emitted from the diffusion cover 205 when the LED lighting device is turned on. Therefore, the appearance at the time of lighting of the LED lighting device can be improved.

  In the LED lighting device based on the sixth embodiment shown in FIG. 37, the diffusion cover 205 has a constant thickness, and its central portion 205a is formed of milky white resin having a light transmittance lower than that of other regions. The light transmittance in the region other than the central portion 205a of the diffusion cover 205 is about 85%, and the light transmittance in the central portion 205a is about 75%. Even if such a diffusion cover 205 is used, it is possible to suppress unevenness of light emitted from the diffusion cover 205 as in the above-described embodiment.

  In the LED lighting device based on the seventh embodiment shown in FIG. 38, the diffusion cover 205 has a constant thickness, and a diffusion member 250 is provided so as to overlap the central portion 205a. The light transmittance of the portion of the diffusion cover 205 where the diffusion member 250 is not provided is about 85%. The diffusing member 250 is made of, for example, the same milky white resin as that of the diffusing cover 205, and is formed so that the light transmittance at the central portion 205a on which the diffusing member 250 is stacked is about 75%. Even when the diffusion cover 205 including such a diffusion member 250 is used, unevenness of light emitted from the diffusion cover 205 can be suppressed. Further, when the diffusion member 250 is prepared separately from the diffusion cover 205, there is an advantage that the manufacture of the diffusion cover 205 itself is easy.

  In addition, the LED module and LED lighting apparatus which concern on this invention are not limited to embodiment mentioned above. The specific configuration of each part of the LED module and the LED lighting device according to the present invention can be varied in design in various ways.

  For example, the LED module is not limited to the configuration in which the light emitting unit is mounted on the substrate, and may have a configuration in which the LED chip is directly mounted on the substrate. The substrate is not limited to an elongated strip shape, and may be rectangular or circular. The plurality of light emitting units may be arranged in a staggered arrangement of three or more rows.

  The plurality of LED chips may emit RGB light, and may be arranged in a plurality of rows in the longitudinal direction of the substrate. When RGB color LED chips are used, the LED illumination device can be applied as, for example, an electric bulletin board or an image display device.

The LED illumination device is not limited to the LED module of the first embodiment, and the LED module of the second or third embodiment can also be applied.

501, 502, 503, 504 LED lamp 601, 602, 603, 604, 605, 606 LED lighting device 650 Lamp case x direction y direction z direction 1 cylinder 2 LED modules 3A, 3B, 3C end cap 4 mount 5 power conversion Part 6 Plate member 11 Support member 12 Diffusion cover 12a, 12b Locking piece 13 Screw 31 Output surface 31a, 31b Inclined surface 32 Connecting plate 32a Screw through hole 33 Umbrella portion 34 Male portion 34a Inclined surface 35 Female portion 35a Inclined surface 41 Base fitting 41a Hole portion 42 Holder 42a Locking piece 42b Flexible portion 42c Connection portion 51 Case 52 Power supply board 53 Electronic component 54 Connector 61 Outgoing surface 71 Main body member 71a Through hole 72 Connector housing portion 73 Termination member 74 Intermediate member 74a Swelling portion 75 Bolt member 111 Substrate 111a Mounting surface 112 Bracket 113 Base part 114 Outer part 114a Locking groove 114b Swelling part 114c Locking groove 114d Locking surface 711,712 Connection part 711a, 712a Long hole 712b, 712b Threading hole 713 Projection part 731,732 Plate part 731a Swelling part 732a Wall surface 733 Inner wall portion 734 Outer plate portion 735, 736 Standing wall 741 Edge portion 750 Ceiling 511-513 LED module 611 LED lighting device 201 Substrate 202 Light emitting portion 202A, 202B Row 220 Light emitting surface 220a Long side 220b Short side 221 LED chip 204 Support member 205 Diffusion cover 205a Central part 250 Diffusion member

Claims (9)

A rectangular substrate having a first surface and a second surface;
A plurality of LED light emitting units arranged along the longitudinal direction on the first surface of the substrate;
A control circuit unit disposed on the second surface side of the substrate and electrically connected to the plurality of LED light emitting units;
A first cover portion extending in the longitudinal direction and facing the first surface of the substrate to cover the plurality of LED light emitting portions; and connected to the first cover portion and orthogonal to the longitudinal direction And a second cover portion that covers the LED light emitting portion together with the first cover portion at both longitudinal ends of the first cover portion, and transmits light emitted from the LED light emitting portion. A translucent cover,
A pair of sides provided with a third surface having an inclination angle with respect to the second surface of the substrate and spaced apart in a short direction perpendicular to the longitudinal direction and extending along two sides extending in the longitudinal direction A support formed by covering at least a part of the control circuit part with the side part,
Have
The LED lighting device, wherein the support is made of a material that does not transmit light emitted from the LED light emitting unit.   2. The LED lighting device according to claim 1, wherein the pair of side portions of the support body sandwich the substrate when viewed in a direction perpendicular to the first surface of the substrate. The plurality of LED light emitting units includes a surface from which light is emitted, and a side surface that is connected to an outer edge of the surface and extends in a direction perpendicular to the surface.
The at least one part of the said side surface of these LED light emission parts is covered by the said one pair of side part of the said support body in the direction view parallel to the said surface of these LED light emission parts. LED illuminating device of description.   2. The at least part of the translucent cover protrudes more toward the emission direction of the light emitted from the LED light emitting part than the side part in a direction perpendicular to the first surface of the substrate. 4. The LED lighting device according to any one of 3 above.   The distance between the pair of side portions of the support body becomes longer from the LED light emitting portion toward the side on which the control circuit portion is formed in a direction perpendicular to the second surface. 5. The LED lighting device according to any one of 4 above.   6. The LED lighting device according to claim 1, further comprising: a power supply wiring electrically connected to the control circuit unit; and a connector connected to the power supply wiring.   The LED lighting device according to claim 1, wherein the control circuit unit includes a power conversion unit that adjusts power supplied to the plurality of LED light emitting units.   The LED illuminating device according to claim 1, wherein the translucent cover has a diffusion characteristic of diffusing light emitted from the LED light emitting unit.   9. The LED illumination device according to claim 1, wherein at least a part of the first cover portion of the translucent cover is curved with respect to the first surface of the substrate.

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