JP6711879B2 - LED lighting device - Google Patents

Description

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

FIG. 39 is a sectional view showing an example of a conventional LED lamp. The LED lamp 900 shown in the figure has an oblong rectangular substrate 91, a plurality of LED chips 92 arranged in a row on the substrate 91, a tube 93 for accommodating the substrate 91, a terminal 94, and an LED chip. And a circuit 95 for lighting 92. Wiring (not shown) connected to the plurality of LED chips 92 and terminals 94 is formed on the substrate 91.

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

However, since the terminals 94 are arranged at both ends in the longitudinal direction of the LED lamp 900, when a plurality of LED lamps 900 are connected so as to be aligned along the longitudinal direction, the joint portion between the LED lamps 900 emits light. It was impossible to make them. Therefore, when the LED lamp 900 is connected to form a long illumination device, dark portions that do not emit light are intermittently arranged along the longitudinal direction, which may give a complex impression to the viewer.

Further, in the plurality of LED chips 92 arranged in a line, a steep luminance distribution is generated centering on the line, and it is easy to feel dazzling. This becomes more remarkable as the number of LED chips 92 increases. As a result, it is difficult to achieve both an increase in the total amount of light and a uniform brightness.

Japanese Utility Model Publication No. 6-54103

The present invention has been conceived under the circumstances described above, and accommodates a long-sized LED lighting device having a better appearance, an LED lamp capable of realizing such an LED lighting device, and an LED lamp. The issue is to provide a lamp case suitable for Another object of the present invention is to provide an LED module and an LED lighting device capable of achieving uniform brightness as well as an increase in the total amount of light.

An LED lamp provided by the first aspect of the present invention accommodates a plurality of LED modules arranged along a first direction and the plurality of LED modules, and an end portion in the first direction is open. And a plurality of end caps closing both ends of the cylinder in the first direction, each end cap diffusing while transmitting light from the plurality of LED modules. It is characterized in that it is formed so as to have an emission surface that emits light in a direction orthogonal to the first direction.

The LED lamp provided by the second aspect of the present invention is the LED lamp provided by the first aspect of the present invention, wherein the tubular body is one side in a second direction orthogonal to the first 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 while transmitting the light. The emission surface is provided 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 is a diffusing material for diffusing 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. Is formed.

An LED lamp provided by the fifth aspect of the present invention is the LED lamp provided by any 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 closest to the end cap in the first direction among the plurality of LED modules and the end cap is shorter than the fixed interval.

An LED lamp provided by the sixth aspect of the present invention is the LED lamp provided by the fifth aspect of the present invention, wherein the end surface of the end cap on the outer side in the first direction and the first direction. In, the distance between the end cap and the closest LED module is half the fixed interval.

The LED lamp provided by the seventh aspect of the present invention is the LED lamp provided by any of the first to third aspects of the present invention, wherein each of the end caps extends along the first direction. The connecting plate is provided so as to project inward of the cylindrical body, and the connecting plate is formed with a screw through hole extending in the first direction. The end cap is inserted into the screw through hole. It is attached to the cylindrical body via the screw and the emitting surface can be housed in the cylindrical body.

An LED lamp provided by the eighth aspect of the present invention is the LED lamp provided by any of the first to sixth aspects of the present invention, wherein the plurality of end caps are outside in the first direction. A first end cap having a sloped surface that slopes away from the emission surface toward one side, and a second end cap that has a sloped surface that slopes toward the emission surface toward the outside in the first direction. Is included.

An LED lamp provided by the ninth aspect of the present invention is the LED lamp provided by any of the first to sixth aspects of the present invention, wherein each of the end caps is outward in the first direction. And a female part having an inclined surface inclined toward the outer side in the first direction and further inclined toward the outer side in the first direction.

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 in the first direction. Among the plurality of LED lamps, the end portions of the end caps of two adjacent LED lamps in the first direction face each other.

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

The LED lighting device provided by the twelfth aspect of the present invention is the LED lighting device provided by the eleventh aspect of the present invention, wherein the emission surfaces of the two adjacent LED lamps are continuous surfaces. ing.

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

The LED lighting device provided by the fourteenth aspect of the present invention is the LED lighting device provided by the thirteenth aspect of the present invention, wherein the plate member has a surface continuous with the emission surface of each of the end caps. 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 in the first direction, and the plurality of LED lamps are provided. Of the two adjacent LED lamps, the end portions of the end caps 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 in the first direction, and the plurality of LED lamps are provided. Of the LED lamps, the two adjacent LED lamps each have 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. One of the two LED lamps is characterized in that 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.

An LED lighting device provided according to a seventeenth aspect of the present invention is configured by arranging at least two or more LED lamps provided according to the ninth aspect of the present invention in the first direction, and adjoining each other. The female part of the end cap of one of the two LED lamps 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 including a plurality of LED modules arranged along a first direction and a tubular body accommodating the plurality of LED modules. In addition, the main body member having a pair of connecting portions at both ends in the first direction, and a terminating member connected to any one of the pair of connecting portions are provided. It is characterized in that it has a wall surface that is attachable to and detachable from the pair of connecting portions and that is perpendicular to the first direction.

A 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 an elongated hole extending in the first direction. The end member is connected to the connecting portion via a bolt member that is inserted through the elongated hole.

The LED lighting device provided by the twentieth aspect of the present invention is housed in the lamp case provided by two or more of the eighteenth or nineteenth aspect of the present invention, 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 that are adjacent to each other in the first direction among the two or more lamp cases. Is characterized by.

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

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

The LED lighting device provided by the twenty-third aspect of the present invention is the LED lighting device provided by the twenty-second aspect of the present invention, wherein the emission surfaces of the two adjacent LED lamps are continuous surfaces. 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 two caps is provided between the end caps of two adjacent LED lamps. A plate member that is in contact with the end cap is provided, and the plate member is formed to transmit and diffuse the light from the plurality of LED modules.

An LED lighting apparatus provided by a twenty-fifth aspect of the present invention is the LED lighting apparatus provided by the twenty-fourth aspect of the present invention, wherein the plate member has a surface continuous with the emission surface of each of the end caps. ing.

An LED lighting device provided by a twenty-sixth aspect of the present invention includes two or more LED lamps according to claim 7 arranged along the first direction and two or more LED lamps housing the two or more LED lamps. A lamp case provided by the eighteenth or nineteenth aspect of the present invention described above, and an intermediate member connected to both two lamp cases that are adjacent to each other in the first direction among the two or more lamp cases. Of the plurality of 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 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. A lamp case provided by two or more eighteenth or nineteenth aspects of the present invention that accommodates a lamp, and two lamp cases that are adjacent to each other in the first direction among the two or more lamp cases. The two adjacent LED lamps of the two or more LED lamps each include the first end cap on one side in the first direction and the other end lamp on the other side. The second end cap is provided, and the inclined surface of the first end cap of one of the two adjacent LED lamps and the inclined surface of the second end cap of the other LED lamp. And are facing each other.

The LED lighting device provided by the twenty-eighth aspect of the present invention is the LED lamp provided by two or more ninth aspects 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 accommodating a lamp; and an intermediate member connected to both of the two or more lamp cases that are adjacent in the first direction. The female part of the end cap of one of the two adjacent LED lamps and the male part of the end cap of the other LED lamp mesh with each other.

With such a configuration, since the joint between the LED lamps allows the light from the LED module to pass therethrough, the LED lighting device is less likely to have a dark portion along the longitudinal direction. Therefore, by connecting the LED lamps provided by the first aspect of the present invention, it is possible to realize a long-sized LED lighting device having a better appearance.

An LED module provided according to a twenty-ninth aspect of the present invention comprises a strip-shaped substrate and a plurality of LED chips arranged on the substrate, each of the plurality of LED chips being provided on the substrate. A plurality of columns arranged in the longitudinal direction and arranged at intervals in the lateral direction of the substrate are formed, and adjacent columns of the plurality of columns are included in these columns. It is characterized in that the plurality of LED chips are arranged in a zigzag arrangement that is displaced in the longitudinal direction of the substrate.

An LED module provided according to a thirtieth aspect of the present invention is the LED module provided according to the twenty-ninth aspect of the present invention, wherein the plurality of LED chips have an oblong rectangular light emitting surface in a thickness direction view of the substrate. Is included in the plurality of light emitting portions, and the plurality of light emitting portions are arranged such that the long sides of the light emitting surface are along the longitudinal direction of the substrate.

An LED module provided according to a thirty-first aspect of the present invention is the LED module provided according to the thirtieth aspect of the present invention, wherein in each of the columns, the plurality of light emitting units are arranged from a long side of the light emitting surface. They are arranged at equal intervals with a short interval.

An LED module provided according to a thirty-second aspect of the present invention is the LED module provided according to the twenty-ninth aspect of the present invention, wherein the plurality of LED chips have an oblong rectangular light emitting surface in a thickness direction view of the substrate. Are included in the plurality of light emitting portions, and the plurality of light emitting portions are arranged such that the short sides of the light emitting surface are along the longitudinal direction of the substrate.

An LED module provided according to the 33rd aspect of the present invention is the LED module provided according to any of the 29th to 31st aspects of the present invention, wherein the plurality of rows is two rows.

An LED lighting device provided according to the 34th aspect of the present invention is the LED module provided according to any of the 29th to 33rd aspects of the present invention, and the LED module provided in the longitudinal direction of the substrate while supporting the substrate. An elongated support member extending along, 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, and The diffusion cover includes a portion having the smallest distance from the LED chip in a longitudinal direction of the substrate, and the degree of diffusing 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 lighting device provided by the thirty-fifth aspect of the present invention is the LED lighting device provided by the thirty-fourth aspect of the present invention, wherein the diffusion cover is arranged in a longitudinal direction of the substrate and is away from the LED chip. The closer the distance is, the thicker the part is formed.

An LED lighting apparatus provided by the 36th aspect of the present invention is the LED lighting apparatus provided by the 34th aspect of the present invention, wherein the strong diffusion portion is a portion of the diffusion cover other than the strong diffusion portion. It is formed of a material that diffuses light from the LED chip more strongly than the above material.

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

An LED lighting apparatus provided by the 38th aspect of the present invention is the LED lighting apparatus provided by any of the 34th to 37th aspects of the present invention, wherein the LED chip is mainly in the thickness direction of the substrate. The diffusion cover is installed so as to be in the emission direction, and when viewed in the longitudinal direction of the substrate, the outer peripheral shape is an elliptical shape with the LED chip as the center and the thickness direction of the substrate as the minor axis direction. is there.

In such a configuration, a portion of the diffusion cover closer to the LED chip 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 intensity of light after passing through the diffusion cover to occur between a portion far from the LED chip and a portion near the LED chip. Therefore, according to the second aspect of the present invention, it is possible to further uniformize the brightness by the diffusion cover and improve the appearance at the time of light emission.

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 device which combined the LED lamp shown in FIG. It is a figure which shows the connection part of the LED illuminating device shown in FIG. It is a top view which shows another Example of the LED illuminating device shown in FIG. It is sectional drawing which shows the LED lamp based on 2nd Embodiment of this invention. FIG. 9 is a plan view of the end cap shown in FIG. 8. It is sectional drawing which shows the LED lighting device which combined the LED lamp shown in FIG. It is a top view which shows the connection part of the LED lighting device which combined the LED lamp based on 3rd Embodiment of this invention. It is sectional drawing which follows the XII-XII line of FIG. It is a top view which shows the connection part of the LED lighting device which combined the LED lamp based on 4th Embodiment of this invention. It is sectional drawing which follows the XIV-XIV line 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 built the LED lamp in the lamp case shown in FIG. 15, and was attached to the ceiling. FIG. 16 is a diagram showing a state in which LED lamps are incorporated 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 of FIG. It is a principal part enlarged view of FIG. It is a top view which expanded a part of lamp case shown in FIG. FIG. 16 is an enlarged bottom view of a part of the lamp case shown in FIG. 15. FIG. 16 is an enlarged view of one end of the main body member shown in FIG. 15. It is the figure which expanded the other end 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 emitting part of the LED module shown in FIG. It is sectional drawing of the LED lighting device provided with the LED module of FIG. It is a principal part sectional drawing of the LED illuminating device 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 a principal part sectional view of the LED lighting device based on 4th Embodiment of this invention. It is a principal part sectional view of the LED lighting device based on 5th Embodiment of this invention. It is a principal part sectional view of the LED lighting device based on 6th Embodiment of this invention. It is a principal part sectional view of the LED lighting device 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 according to the present embodiment has a tubular body 1 formed to extend in the x direction, a plurality of LED modules 2 housed in the tubular body 1, and an end cap attached to an end portion of the tubular body 1. 3, the two mounts 4, and the 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 inside, and is used, for example, for being mounted on a ceiling or the like and illuminating a floor surface. Be done.

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

The substrate 111 has a strip shape with the x direction as the longitudinal direction and the y direction as the width direction, and is made of, for example, glass epoxy resin. The substrate 111 has a constant thickness in the z direction and has 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 turning on 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. The base portion 113 and the outer portion 114 are made of aluminum, for example. The base portion 113 has a U-shaped cross section, and the substrate 111 is attached to the outside of the bottom surface thereof. The outer portion 114 has a shape that covers a substantially one side portion of the base portion 113 and the y-direction end edge 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, in each outer portion 114, a bulged portion 114b protruding in the y direction from the vicinity of one end in the y direction, and a locking groove 114c formed in each bulged portion 114b and recessed to the other side in the z direction. 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 extending in the x direction and having an arcuate cross section, and is made of, for example, a transparent polycarbonate resin added with a diffusion material such as mercury chloride. Such a diffusion cover 12 diffuses and transmits the light from the LED module 2. As shown in FIG. 3, the diffusion cover 12 includes a locking piece 12a at one end in the y direction and a locking piece 12b at the other end. The locking pieces 12a and the locking pieces 12b are formed so as to project inward in the y direction, and each has a surface that abuts on the locking surface 114d. The locking piece 12b further includes a portion that projects toward the other side in the z direction, and has a shape that fits into the locking groove 114c. The diffusion cover 12 pushes the locking piece 12a into the locking groove 114c on the other side in the y direction in a state where the locking piece 12b is fitted in the locking groove 114c on the one side in the y direction. Fixed to.

Each LED module 2 has a built-in LED chip, is electrically connected to a wiring pattern (not shown) formed on the mounting surface 111a, and is configured 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 ends of two adjacent LED modules 2 in the x direction is the interval 81 between the LED modules 2. Of the plurality of LED modules 2, the LED module 2 located at the end on the one side in the x direction has an end portion on one side that is shorter than the distance 81 from one end portion in the x direction of the support member 11 by a distance 82. It is arranged so as to come to a distant position. Of the plurality of LED modules 2, the LED module 2 located at the end on the other side in the x direction comes to a position where the end portion on the other side is separated from the other end portion of the support member 11 in the x direction by a distance 82. Are arranged as follows.

The end cap 3 is a component for preventing dust and the like from entering the inside of the tubular body 1, and as shown in FIG. 1, is formed so as to close the end portion of the tubular body 1 in the x direction. One side 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 shows a perspective view of the end cap 3 and also shows the outer periphery of the diffusion cover 12 by a chain double-dashed line. The end cap 3 is installed so that no gap is created between the end cap 3 and the diffusion cover 12. As shown in FIG. 2, the end cap 3 has an emission surface 31 that is a surface continuous with the outer peripheral surface of the diffusion cover 12, and the x-direction. And a pair of projecting connecting plates 32. The pair of connecting plates 32 are formed so as to be parallel to each other while being separated from each other in the y direction, and are in contact with the inner surface of the base portion 113 of the bracket 112, as shown in FIG. Further, 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 attached to the supporting member 11. It is fixed. As shown in FIG. 4, the end cap 3 has a constant thickness 83 in the x direction. The thickness 83 is, for example, about 1.5 mm.

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

In the present embodiment, the end of the end cap 3 attached to one side of the tubular body 1 in the x direction on the other side in the x direction is in close contact with the end of the support member 11 on the one side in the x direction. Further, the end portion on the one side in the x direction of the end cap 3 attached to the other side in the x direction of the tubular body 1 is in close contact with the end portion on the other side in the x direction of the support member 11. Further, the distance 82 is set so that the 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 fixing the LED lamp 501 to a ceiling or a wall, and includes a base metal fitting 41 and a holder 42. The base metal fitting 41 is formed, for example, by subjecting a metal plate to a drilling process and a bending process, and is provided with a hole portion 41a for inserting a screw. As shown in FIG. 1, the hole portion 41a is formed in a T shape in which a long hole extending in the y direction and a long hole extending in the x direction are combined. Therefore, the position of the base metal fitting 41 can be adjusted by the size of the hole 41a even after the base metal fitting 41 is attached to the ceiling or the wall with the screw.

The holder 42 is formed by bending a metal plate, for example, and as shown in FIG. 3, a pair of locking pieces 42a, a pair of flexible portions 42b, and a pair of flexible parts. It has the connection part 42c which connects the flexible part 42b. The flexible portion 42b is configured to support the locking piece 42a. When the external force is applied to the pair of flexible portions 42b, the pair of flexible portions 42b can be elastically deformed in a direction of moving the pair of locking pieces 42a toward and away from each other. The pair of locking pieces 42a are portions that engage with the locking grooves 114a of the support member 11, and are inclined so that the distance becomes smaller toward the upper side in the drawing in FIG.

The power conversion unit 5 has a function of converting, for example, commercial AC 100V power into DC 36V, and is housed in the support member 11. The power conversion unit 5 includes a case 51, a power supply board 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 board 52 is fixed to the case 51, and has a plurality of electronic components 53 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 conversion unit 5. The 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 from one power conversion unit 5 to 144 LED modules 2. These 144 LED modules 2 are divided into 12 groups each including 12 connected in series with each other. These groups are connected in parallel. As a result, DC power having a voltage of about 3 V and a current of about 20 mA is supplied to each LED chip in each LED module 2.

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 mainly installed at the end portion in the x direction enters 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 of the light is emitted from the emission surface 31 in the z direction. For this reason, when the LED lamp 501 is installed on a ceiling and turned on, for example, a person looking up from below may see that the end portion of the LED lamp 501 in the x direction also shines like other portions.

FIG. 5 is a plan view showing a part of an LED lighting device 601 configured by combining a plurality of the above-described LED lamps 501. As shown in FIG. 5, in the LED lighting device 601, a plurality of LED lamps 501 are attached to a ceiling or a 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 show the inside of the LED lamps 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 with the two end caps 3 interposed therebetween is exactly 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, light passing through one end cap 3 is diffused by the other end cap 3. Therefore, 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 utilize the light from the LED module 2.

As described above, since the end cap 3 transmits and scatters the light from the LED module 2, the emission surface 31 appears to shine. Therefore, in the LED lighting device 601, the joint portion between the adjacent LED lamps 501 does not become dark. Therefore, by combining the LED lamps 501, it is possible to realize a long-sized LED lighting device 601 that extends longer in the x direction and has a better appearance.

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

7 to 26 show another embodiment of the present invention. In these figures, the same or similar elements as those in the above embodiment are designated by the same reference numerals as 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 above-described LED lamps 501. In the LED lighting device 602 shown in FIG. 7, the plate member 6 is provided between the end caps 3 of the 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 member 6 is sandwiched between the right end surface of the end cap 3 on the left side in the drawing and the left end surface of the end cap 3 on the right side in the drawing in the x direction. The plate member 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 is provided with an emission surface 61 that is continuous with the emission surfaces 31 of the left and right end caps 3 in FIG. 7. There is. The plate member 6 is made of, for example, a transparent polycarbonate resin added with a diffusing material such as mercury chloride. The ratio of the diffusing material in the plate member 6 is approximately the same as the ratio of the diffusing material in the diffusion cover 12. The plate member 6 diffuses and transmits the light from the LED module 2 that has passed through the end cap 3. Part of the light diffused inside the plate member 6 is emitted from the emission surface 61 in the z direction.

In such an LED lighting device 602 as well, the plate member 6 appears to emit light as in the case of 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 becomes more attractive.

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

Also in the LED lighting device 601, when a large number of LED lamps 501 are arranged in a line, a gap may occur between the end portions of the adjacent LED lamps 501. In such a case, by using the plate member 6 of the LED lighting device 602 together, it is possible to prevent the joint portion of the LED lamp 501 from becoming dark.

In the above-described embodiment, the end cap 3 is installed outside the diffusion cover 12 so that the emission surface 31 is a surface continuous with the outer peripheral surface of the diffusion cover 12, but the emission surface 31 is inside the diffusion cover 12. The end cap 3 may be installed inside the diffusion cover 12 so as to be in contact with the peripheral surface. 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 near an end portion of an LED lamp according to the second embodiment of the present invention. The LED lamp 502 shown in FIG. 8 is different 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 of 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 the wall so as to be lined up in a line along the x direction. In addition, in FIG. 10, the interval between the LED lamps 502 is intentionally shown large for the sake of explanation.

The diffusion cover 12 in this embodiment is formed to be longer than the support member 11 in the x direction. Furthermore, in the present embodiment, the end cap 3 is arranged 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 tubular body 1 along the x direction. The outer peripheral surface of the umbrella portion 33 is integrated with the emitting surface 31. In the present embodiment, the emission surface 31 of the end cap 3 is in contact with the inner peripheral surface of the diffusion cover 12.

Further, the screw through hole 32a formed in the connecting plate 32 of the present embodiment is a long hole extending in the x direction. Therefore, the end cap 3 is movable in the x direction by the length of the screw through hole 32a. When the end cap 3 is pulled out to the outside of the tubular body 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 to each other, as shown in FIG. 10, when there is a gap between the LED lamps 502, by pulling out the end cap 3 from the cylindrical body 1, The gap can be closed with the umbrella portion 33. Since the umbrella portion 33 is a part of the end cap 3, it diffuses and transmits light from the LED module 2. Therefore, when the LED lighting device 603 is viewed from below in the z direction, the umbrella portion 33 appears to be emitting light. Therefore, the LED lighting device 603 has a configuration in which a dark place is unlikely to occur along the x direction.

11 and 12 show a state of a joint portion of an LED lighting device using an LED lamp according to the third embodiment of the present invention. The LED lamp 503 shown in FIGS. 11 and 12 has 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 similar to those of the LED lamp 501.

The end cap 3A is formed so as to become thicker in the x direction as it goes downward in the z direction in FIG. 12, and has an inclined surface 31a. The inclined surface 31a is inclined so as to move away from the emission surface 31 in the z direction toward the outside in the x direction. The end cap 3B is formed so as to become thinner in the x direction as it goes downward in the z direction in FIG. 12, and has an inclined surface 31b. The inclined surface 31b is inclined so as to approach the emitting surface 31 in the z direction toward the outside in the x direction.

In the LED lighting device 604 in which such LED lamps 503 are connected, the end cap 3A and the end cap 3B face each other at the joint portion, as shown in FIGS. 11 and 12. It is desirable to arrange a plurality of LED lamps 503 so that the inclined surfaces 31a and 31b are in contact with each other, but when a large number of LED lamps 503 are arranged, it is difficult to arrange them without any gap. In this embodiment, even when a gap is formed between the end cap 3A and the end cap 3B, when the LED lighting device 604 is viewed from the lower side in the z direction in FIG. 12, the inclined surface 31b looks shiny. Therefore, the LED lighting device 604 has a configuration in which a dark place is unlikely to occur along the x direction.

13 and 14 show a state of a joint portion of an LED lighting device using an 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 3C instead of the end cap 3, and the other configurations are similar to those of the LED lamp 501.

The end cap 3C includes a male portion 34 formed on one side in the y direction and a female portion 35 formed on the other side in the y direction. The male portion 34 has an inclined surface 34a that is inclined outwardly in the x direction so as to approach the emission surface 31 in the z direction. It is formed so as to bulge outward in the x direction as it approaches the emission surface 31 in the z direction, and bulges outward in the x direction toward the center in the y direction. The female portion 35 has an inclined surface 35a that inclines away from the emission surface 31 in the z direction toward the outside in the x direction. The female portion 35 is formed to be recessed inward in the x direction as it approaches the emitting surface 31 in the z direction so as to fit with the male portion 34, and the center in the y direction is inward in the x direction. It is recessed in.

In the LED lighting device 605 formed by arranging the LED lamps 504 in the x direction, as shown in FIG. 13 and FIG. 35 and 35 mesh with each other. It is desirable to install a plurality of LED lamps 504 so that the end caps 3C are in contact with each other, but when a large number of LED lamps 504 are arranged, a gap may occur between the end caps 3C. Even in such a case, it is the inclined surface 35a that can be seen from the gap between the end caps 3C of the present embodiment, and it can be seen as shiny as the emission surface 31. In addition, the end cap 3C of the present embodiment can be attached to both ends of the tubular body 1, which is economical.

15 to 26 show an example of the lamp case according to the present invention. The 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. Note that the LED lamp 501 is shown in FIG. 15 for reference. FIG. 16 shows a state in which the LED lamp 501 is housed in the lamp case 650 and attached to the ceiling 750. Further, as shown in FIG. 17, there is shown an LED lighting device 606 configured by arranging a plurality of lamp cases 650 each accommodating an LED lamp 501 in the x direction. 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 accommodating portion 72, a terminating member 73, and an intermediate member 74. The terminating 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, for example, a male screw. It is assumed that the end 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 in one side in the z direction, is formed to extend in the x direction, and has a connecting portion 711 at one end in the x direction and at the other end in the x direction. The connecting part 712 is provided. As shown in FIG. 23, the connecting portion 711 is formed with a pair of elongated holes 711a extending in the x direction. As shown in FIG. 24, the coupling portion 712 is formed with a pair of elongated holes 712a extending in the x direction. The long holes 711a and 712a have the same shape, and both of them can pass the bolt member 75. Further, the main body member 71 is provided with protrusions 713 protruding from both side edges in the y direction 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, when the lamp case 650 is attached to the ceiling 750, the protrusion 713 does not enter the inside of the ceiling 750 and is exposed to the outside. The main body member 71 is fixed along the ceiling 750 by the protrusion 713 contacting the ceiling 750. Therefore, the lamp case 650 is attached to the ceiling 750 without tilting with respect to the ceiling 750, and the LED lamp 501 can be preferably housed.

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

The terminal 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 terminating member 73 includes plate portions 731 and 732 orthogonal to each other, a pair of inner wall portions 733, an outer plate portion 734, and upstanding walls 735 and 736.

The plate portion 731 is formed in a rectangular shape when viewed in the z direction, and is a portion 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 bulging portions 731a whose thickness in the z direction is thicker than that of the periphery. The pair of bulging portions 731a is provided with a pair of screw receiving holes that fit into the bolt members 75. Female screws corresponding to the male screws formed on the bolt member 75 are 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 as 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 project 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 ends of the plate portion 732 and the pair of inner wall portions 733 in FIG. 20, and is formed so as to be seen as a frame shape in which the protruding portion 713 is extended in the z direction as shown in FIG. Has been done. The upright wall 735 is formed so as to stand up from both edges of the outer plate portion 734 in the y direction and extend along both edges of the protrusion 713 in the y direction. As shown in FIG. 18, the position of the upper end of the standing wall 735 in the z direction in the figure matches the position of the upper end of the protrusion 713 in the z direction in the figure. The standing wall 736 stands up from the end of the outer plate portion 734 in the x direction so as to face the plate portion 732. The upright wall 736 is connected to the upright wall 735 at both ends in the y direction. The upright walls 735 and 736 have an appearance as if 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 whose thickness in the z direction is thicker than that of the periphery. Each of the two pairs of bulging portions 74a is provided with a screw receiving hole that fits into the bolt member 75. Female screws corresponding to the male screws provided on the bolt member 75 are also provided in these screw receiving holes. As shown in FIG. 25, the two pairs of bulging portions 74a are provided at positions overlapping 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. It can happen. FIG. 26 shows a state in which a joint portion is looked up from the floor when a gap is formed between the main body members 71 of the adjacent lamp cases 650. The LED lamp 501 is omitted in FIG.

In the present embodiment, as shown in FIG. 26, even if 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. Further, as shown in FIG. 26, since the intermediate member 74, not the ceiling surface, can be seen from the gap between the main body members 71, deterioration of the appearance can be suppressed.

Further, the end member 73 can also be displaced in the x direction by displacing the position of the bolt member 75 in the elongated holes 711a and 712a. Therefore, even if the adjustment by the above-mentioned intermediate member 74 cannot cope, it is possible to deal with it 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 elongated hole 711a. Other configurations are similar to 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 if there is a gap between the connecting portions 711 and 712 of the adjacent main body member 71, the position of the bolt member 75 in the elongated hole 712a is shifted to move the intermediate member 74 to the connecting portion 711. , 712. Furthermore, since the intermediate member 74, not the ceiling surface, can be seen through the gap between the main body members 71, it is possible to suppress the deterioration of the appearance.

FIG. 28 shows a second modification of the lamp case 650. In this modification, a circular screw through hole 712b is provided instead of the elongated hole 712a. Other configurations are similar to those of the lamp case 650 shown in FIGS. In FIG. 28, similar to FIG. 26, a state in which such lamp cases 650 are arranged is shown. 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 position of the bolt member 75 in the elongated hole 711a is shifted to move the intermediate member 74 to the connecting portion 711. , 712. Furthermore, since the intermediate member 74, not the ceiling surface, can be seen through the gap between the main body members 71, it is possible to suppress the deterioration of the appearance. Furthermore, it is also possible to perform the adjustment 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 embodiments. The specific configuration of each part of the LED lamp and the LED lighting device according to the present invention can be modified in various ways.

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

Further, in the LED lighting devices 602 to 605, the 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 may occur between the adjacent LED lamps 501 to 504. In such a case, a gap may occur between the adjacent lamp cases 650, but the intermediate member 74 of the same color as the main body member 71 can be seen through the gap between the lamp cases 650. Therefore, it is possible to prevent the appearance from being deteriorated.

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 about 200 mm and a lateral dimension of about 20 mm. Although not shown in particular, a wiring pattern for mounting the 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 so as to form two rows 202A and 202B along the longitudinal direction thereof. When the one surface of the substrate 201 is viewed in the thickness direction, the light emitting section 202 has an elongated rectangular light emitting surface 220. All the light emitting units 202 are arranged such that the long side 220a of the light emitting surface 220 is along the longitudinal direction of the substrate 201. The light emitting portions 202 of each row 202A and 202B are arranged at equal intervals in the longitudinal direction of the substrate 201 with an interval 85. The space 85 is approximately the same as the long side 220a of the light emitting surface 220. The rows 202A and 202B are displaced from each other by a half pitch in the longitudinal direction of the substrate 201. As a result, the plurality of light emitting units 202 are in a staggered arrangement. In addition, 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 be longer than the long side 220a.

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

The LED chip 221 has a structure in which, for example, an n-type semiconductor layer, a p-type semiconductor layer, and an active layer sandwiched therebetween are laminated. When the LED chip 221 is made of, for example, a GaN-based semiconductor, it 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 joined to the wiring pattern on the substrate 201. The resin package 225 is for protecting the LED chip 221 and the wires 224. The resin package 225 is formed of, for example, an epoxy resin that has a property of transmitting light from the LED chip 221. The resin package 225 contains, for example, a fluorescent material that emits yellow light when excited by blue light. As a result, the light emitting unit 202 emits white light. One surface of the resin package 225 opposite to the surface facing the substrate 201 is a light emitting surface 220.

31 and 32 show an example of an LED lighting device including the LED module 511. The LED lighting device 611 of the present 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 illuminating the floor surface, for example, in a state where the LED lighting device 611 is mounted on the indoor ceiling surface, and is long in the direction of penetrating the paper surface of FIG.

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 plane of the drawing, and is made of, for example, aluminum. A recess 230a is provided in the main body 230. The recess 230a is for accommodating the LED module 511. The main body 230 has a curved surface with a curvature that is continuous with the recess 230a interposed therebetween.

The main body 230 is composed of a base plate 310 and wings 320. The base plate 310 is formed in an elongated plate shape having a longitudinal direction extending through the plane of FIG. 31 and a width direction extending in the y direction, and includes a plurality of bulging portions 311. Both end edges of the base plate 310 in the y direction are bent downward in the z direction in order to ensure rigidity. The plurality of bulging portions 311 are portions formed so as to project 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 portion 311 is in contact with the wing portion 320.

The wing portion 320 is generally formed in an umbrella shape when viewed in the direction of penetrating the paper surface of FIG. 31, and has a bottom plate portion 321, two wall portions 322, and a restriction portion 323 inside. The bottom plate portion 321 is parallel to the base plate 310. The two walls 322 stand in the z direction from both ends of the bottom plate 321 in the y direction. The bottom plate portion 321 and the two wall portions 322 form a recess 230a for housing the LED unit 2. A holder 231 that is an elastic member is arranged on the wall portion 322 on one side, and a regulating member 323 is formed on the wall portion 322 on the other side. The restriction member 323 is a plate-like member that protrudes from the wall portion 322 in the y direction and is perpendicular to the wall portion 322. The restriction member 323 is installed, for example, over substantially the entire length of the wing portion 320 in the direction of 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 shown in FIG. 31, the locking piece 231a is inclined so as to move away from the bottom plate portion 321 in the z direction, and further away from the LED module 511 in the y direction. The flexible portion 231b is inclined so as to move closer to 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 has a shape in which one end supports the locking piece 231a and the other end is connected to the fixed portion 231c, and is elastically curved and deformable. The fixing portion 231c is a plate-shaped member provided so as to overlap the bottom plate portion 321, and is fixed to the wing portion 320 via a screw 331. It should be noted that the holders 231 are installed so as to be lined up in a plurality along the direction of penetrating the paper surface of FIG.

As shown in FIG. 31, the support member 204 is for supporting the plurality of LED modules 511 and supplying electric power thereto. 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. The base portion 241 and the outer portion 242 are made of aluminum, for example. 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 a substantially one side portion of the base portion 241 and the y-direction end edge of the substrate 201.

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

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

As shown in FIGS. 31 and 32, the diffusion cover 205 has an arc-shaped cross section extending in a direction penetrating the plane of the drawing, and is made of, for example, a milky white resin that diffuses and transmits the light from the LED module 511. As shown in FIG. 31, locking pieces 251 and 252 are formed on both 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 constant width in the y direction with the center directly under the LED module 511 in the z direction. 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 units 202 are arranged in a staggered arrangement. The central portion 205a corresponds to an example of a strong diffusion portion that is a main part of the present invention.

The power conversion unit 206 has a function of converting, for example, 100 V commercial AC power to 36 V DC, and is housed 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. The case 261 is used to fix the power conversion unit 206 to the base unit 241. The power supply board 262 is fixed to the case 261, and has a plurality of electronic components 263 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 the connector attached to the mount 203.

In this 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, DC power having a voltage of about 3 V and a current of about 20 mA is supplied to each LED chip 221.

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, the plurality of light emitting units 202 arranged in a zigzag form a light emitting region having a certain extent in the longitudinal direction and the lateral direction of the substrate 201. The light from the light emitting region is irradiated while being spread to some extent not only in the longitudinal direction of the substrate 201 but also in the lateral direction.

Moreover, in the light emitting region, since the light emitting units 202 forming the one column 202A are located between the light emitting units 202 forming the other column 202B, it is difficult for the light from the other column 202B to overlap. As a result, in the light emitting region including the two columns 202A and 202B, it is difficult for the luminance distribution having a steep tendency to be generated, and the luminance distribution that is gradually spread in the lateral direction of the substrate 201 is formed.

That is, the light emitting region does not appear to be concentrated in a linear shape but to be spread in a band shape to some extent. Therefore, the plurality of light emitting units 202 do not feel so dazzling. Therefore, according to the LED module 511, by arranging the plurality of light emitting units 202 in a zigzag arrangement, it is possible to increase the total amount of light and achieve uniform brightness.

In the LED lighting device 611 of the present embodiment, the thicker the portion of the diffusion cover 205 is, the more light is diffused, and the light transmittance is reduced. Therefore, 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 smallest in 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. Therefore, the intensity of light from the LED module 511 that reaches the central portion 205a is higher than the intensity of light from the LED module 511 that reaches other regions.

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. Will be the strength of. Therefore, in the LED lighting device 611, unevenness of the light emitted from the diffusion cover 205 is suppressed at the time of lighting, and it is visually recognized that the individual light emitting portions 202 are arranged in dots and the rows 202A and 202B are formed. Can be prevented. Therefore, according to the LED lighting device 611, the diffusion cover 205 makes it possible to further uniformize the brightness and improve the appearance at the time of lighting.

33 and 34 show LED modules according to the second and third embodiments of the present invention, and FIGS. 35-10 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 of the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

In the LED module 512 according to the second embodiment shown in FIG. 33, the light emitting units 202 of the columns 202A and 202B are arranged at equal intervals in the longitudinal direction of the substrate 201 at intervals 86. The space 86 is shorter than the long side 220a of the light emitting surface 220. The rows 202A and 202B are displaced from each other by a half pitch in the longitudinal direction of the substrate 201. As a result, the plurality of light emitting units 202 are arranged in a zigzag pattern at a narrower interval than in the first embodiment, and the number thereof is larger. With such a configuration, it is possible to further increase the total amount of light while achieving uniform brightness.

In the LED module 513 based on the third embodiment shown in FIG. 34, all the light emitting units 202 are arranged such that the short sides 220b of the light emitting surface 220 are along the longitudinal direction of the substrate 201. The light emitting portions 202 of each row 202A and 202B are arranged at equal intervals in the longitudinal direction of the substrate 201 with an interval 87. The rows 202A and 202B are displaced from each other by a half pitch in the longitudinal direction of the substrate 201, and the plurality of light emitting units 202 are arranged in a staggered arrangement. With such a configuration, the interval 87 between the light emitting units 202 in each of the columns 202A and 202B can be appropriately set according to the directivity of the LED chip, and the brightness can be made uniform. In addition, in the present embodiment, the interval 87 is considerably larger than the short side 220b of the light emitting surface 220, but the interval 87 may of course be shorter than the short side 220b. In such a case, it is possible to increase the number of the light emitting units 202 and increase the total amount of light.

In the LED lighting device according to the fourth embodiment shown in FIG. 35, the central portion 205a of the diffusion cover 205 is formed in a flat plate shape. Even if such a diffusion cover 205 is used, it is possible to suppress unevenness of the light emitted from the diffusion cover 205.

In the LED lighting device according to the fifth embodiment shown in FIG. 36, the diffusion cover 205 is formed such that its thickness gradually increases in the y direction from the end to the center. Such a diffusion cover 205 is thicker in a portion closer to the LED module 511. This makes it possible to further suppress the unevenness of the light emitted from the diffusion cover 205 when the LED lighting device is turned on. Therefore, it is possible to improve the appearance of the LED lighting device when it is turned on.

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

In the LED lighting device according to the seventh embodiment shown in FIG. 38, the diffusion cover 205 has a constant thickness, and the 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 the diffusing cover 205, and is formed so that the light transmittance in the central portion 205a where the diffusing member 250 is stacked is about 75%. Even if the diffusing cover 205 including the diffusing member 250 is used, it is possible to suppress unevenness of light emitted from the diffusing cover 205. Further, when the diffusion member 250 is prepared separately from the diffusion cover 205, there is an advantage that the diffusion cover 205 itself can be easily manufactured.

The LED module and the LED lighting device according to the present invention are not limited to the above-described embodiments. The specific configurations of the respective parts of the LED module and the LED lighting device according to the present invention can be modified 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 be a configuration in which the LED chip is directly mounted on the substrate. The substrate is not limited to the elongated strip shape, and may have a rectangular shape or a circular shape. The plurality of light emitting units may be arranged in a staggered arrangement of three rows or more.

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

The LED lighting device is not limited to the LED module of the first embodiment, and the LED module of the second or third embodiment can 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 module 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 Light emitting surface 31a, 31b Inclined surface 32 Connection plate 32a Screw through hole 33 Umbrella part 34 Male part 34a Inclined surface 35 Female part 35a Inclined surface 41 Base metal fitting 41a hole 42 holder 42a locking piece 42b flexible portion 42c connecting portion 51 case 52 power supply substrate 53 electronic component 54 connector 61 emitting surface 71 main body member 71a through hole 72 connector accommodating portion 73 end member 74 intermediate member 74a bulging portion 75 Bolt member 111 Substrate 111a Mounting surface 112 Bracket 113 Base portion 114 Outer portion 114a Locking groove 114b Bulging portion 114c Locking groove 114d Locking surface 711, 712 Connecting portion 711a, 712a Long hole 712b, 712b Screw through hole 713 Projecting portion 731, 732 Plate part 731a Swelling part 732a Wall surface 733 Inner wall part 734 Outer plate part 735, 736 Standing wall 741 Edge part 750 Ceiling 511-513 LED module 611 LED lighting device 201 Substrate 202 Light emitting part 202A, 202B Row 220 Light emitting surface 220a long side 220b short side 221 LED chip 204 support member 205 diffusion cover 205a central portion 250 diffusion member

Claims (4)

A plurality of LED modules arranged along a first direction;
A tubular body that accommodates the plurality of LED modules and has an open end in the first direction;
A plurality of end caps closing both ends of the tubular body in the first direction,
Is equipped with
Each of the end caps is formed to transmit and diffuse light from the plurality of LED modules, and each of the end caps is a connection protruding inward of the tubular body along the first direction. Equipped with a board,
Each of the end caps is attached to the cylindrical body via the connecting plate ,
Each of the end caps has an emission surface that emits light in a direction orthogonal to the first direction,
The connecting plate is formed with a threaded hole extending in the first direction,
Each end cap is attached to the cylindrical body through the insertion has been threaded into the hole through the screw, and wherein the housing can der Rukoto in the tubular body the exit surface, LED lamp . The tubular body includes a support member having a mounting surface on which the plurality of LED modules are mounted on one side in a second direction orthogonal to the first direction, and one side in the second direction of the support member. And a diffusion cover for diffusing light from the plurality of LED modules while transmitting the light.
The LED lamp according to claim 1 , wherein the emission surface is formed on one side in the second direction. The LED lamp according to claim 1 or 2 , wherein each of the end caps is formed of a transparent resin to which a diffusing material that diffuses light from the LED module is added. At least two or more LED lamps according to any one of claims 1 to 3 are arranged side by side along the first direction,
Among the plurality of LED lamps, an end portion of the end caps of two adjacent LED lamps in the first direction are in contact with each other, the LED lighting device.

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