JP6955711B2 - LED lighting device - Google Patents

Description

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

FIG. 39 shows an example of a conventional LED lamp in a cross-sectional view. The LED lamp 900 shown in the figure includes a long 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. It is provided with 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 emit light by fitting the terminal 94 into the insertion port of a socket for, for example, a fluorescent lamp 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 a substitute for an existing fluorescent lamp, improvement in cost and environment can be expected.

However, since the LED lamp 900 has terminals 94 arranged at both ends in the longitudinal direction, when a plurality of LED lamps 900 are connected so as to be lined up along the longitudinal direction, the joint portion between the LED lamps 900 emits light. It was impossible to make it. For this reason, when the LED lamps 900 are connected to form a long lighting device, dark parts that do not emit light are intermittently lined up along the longitudinal direction, which may give a complicated impression to the viewer.

Further, in the plurality of LED chips 92 arranged in a row, a steep brightness distribution is generated around the row, 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.

Jikkenhei 6-54103

The present invention has been conceived under the above circumstances, and includes a long LED lighting device having a better appearance, and LED lamps and LED lamps capable of realizing such an LED lighting device. The challenge is to provide a lamp case suitable for the above. Another object of the present invention is to provide an LED module and an LED lighting device capable of making the brightness uniform as the total amount of light increases.

The LED lamp provided by the first aspect of the present invention accommodates a plurality of LED modules arranged along the first direction and the plurality of LED modules, and the end portion in the first direction is open. A cylinder to be used and a plurality of end caps for sealing both ends of the cylinder in the first direction are provided, and each of the end caps diffuses light from the plurality of LED modules while transmitting the light. It is characterized in that it is formed so as to allow light to be emitted, and has an emitting 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, in which the cylinder 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 exit 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, in which each end cap is a diffuser that 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, in which the emission surface is a surface continuous with the outer peripheral surface of the diffusion cover. It is formed like this.

The 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, in which the plurality of LED modules are arranged at regular intervals. The distance between the LED module closest to the end cap and the end cap in the first direction among the plurality of LED modules is shorter than the constant interval.

The LED lamp provided by the sixth aspect of the present invention is the LED lamp provided by the fifth aspect of the present invention with the outer end surface of the end cap in the first direction and the first 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 of the first to third aspects of the present invention, wherein each of the end caps is along the first direction. A connecting plate that projects inward of the cylinder is provided, and the connecting plate is formed with a screw through hole that extends long in the first direction, and the end cap is inserted into the screw through hole. It is attached to the cylinder through the screw, and the exit 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 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 an inclined surface that inclines toward the exit surface and a second end cap having an inclined surface that inclines toward the outside in the first direction toward the exit surface. Includes.

The 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. It includes a male portion having an inclined surface that inclines so as to approach the exit surface, and a female portion having an inclined surface that inclines toward the outside in the first direction toward the exit surface.

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 caps of the two adjacent LED lamps among the plurality of LED lamps are facing each other in the first direction.

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 in the first direction of the end caps of the two adjacent LED lamps. 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, in which 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, in the LED lighting device provided by the tenth aspect of the present invention, between the end caps of the two adjacent LED lamps. A plate material in contact with the end cap is provided, and the plate material is formed so as 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, in which the plate material has a surface continuous with the exit 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 along the first direction. The LED lamps of the above are characterized in that the ends 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 of the above, two adjacent LED lamps are provided with the first end cap on one side in the first direction and the second end cap on the other side, respectively, and are adjacent to each other. It is characterized in that the inclined surface of the first end cap of one of the two LED lamps 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 adjacent to each other. The female portion of the end cap of one of the two LED lamps and the male portion of the end cap of the other LED lamp are in mesh with each other.

The lamp case provided by the eighteenth aspect of the present invention houses an LED lamp including a plurality of LED modules arranged along a first direction and a cylinder for accommodating the plurality of LED modules. In addition, a main body member having a pair of connecting portions at both ends in the first direction and a terminal member connected to any of the pair of connecting portions are provided, and the terminal member is the terminal member. It is characterized in that it is removable from a pair of connecting portions and has a wall surface 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, in which the connecting portion is formed with an elongated hole extending in the first direction. The terminal member is connected to the connecting portion via a bolt member through which the elongated hole is inserted.

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 and the lamp case. It is provided with 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 among the two or more lamp cases. It is characterized by.

The LED lighting device provided by the 21st aspect of the present invention is the LED lamp provided by any of two or more 1st to 6th aspects of the present invention arranged along the first direction. , The lamp case provided by the 18th or 19th genus surface of the present invention accommodating the plurality of LED lamps, and the two or more lamp cases adjacent to each other in the first direction. An intermediate member connected to both of the lamp cases is provided, and among the two or more LED lamps, the ends of the end caps of the two adjacent LED lamps in the first direction face each other. It is characterized by being.

The LED illuminating device provided by the 22nd aspect of the present invention is the LED illuminating device provided by the 21st 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 lighting device provided by the 23rd aspect of the present invention is the LED lighting device provided by the 22nd aspect of the present invention, in which the emission surfaces of the two adjacent LED lamps are continuous surfaces. ing.

The LED illuminating device provided by the 24th aspect of the present invention is the LED illuminating device provided by the 21st aspect of the present invention, in which the end caps of the two adjacent LED lamps are located between the end caps of the two adjacent LED lamps. A plate material in contact with the end cap is provided, and the plate material is formed so as to transmit and diffuse the light from the plurality of LED modules.

The LED lighting device provided by the 25th aspect of the present invention is the LED lighting device provided by the 24th aspect of the present invention, in which the plate material has a surface continuous with the exit surface of each of the end caps. ing.

The LED lighting device provided by the 26th aspect of the present invention accommodates the two or more LED lamps according to claim 7 and the two or more LED lamps arranged along the first direction. The lamp case provided by the 18th or 19th aspect of the present invention and the intermediate member connected to both of the two or more lamp cases adjacent to each other in the first direction. , And the ends of the end caps of the two adjacent LED lamps in the first direction of the plurality of LED lamps are in contact with each other.

The LED lighting device provided by the 27th 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 lamp case provided by the 18th or 19th aspect of the present invention accommodating the lamp and the two or more lamp cases adjacent to each other in the first direction. Of the two or more LED lamps, the two adjacent LED lamps each have the first end cap on one side in the first direction and 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. Is characterized by facing each other.

The LED lighting device provided by the 28th 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. The lamp case according to claim 18 or 19 for accommodating two or more lamps, and an intermediate member connected to both of two or more lamp cases adjacent to each other in the first direction among the two or more lamp cases. The female portion of the end cap of one of the two adjacent LED lamps and the male portion of the end cap of the other LED lamp are in mesh with each other.

According to such a configuration, since the joint between the LED lamps allows the light from the LED module to pass through, 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 LED lighting device having a better appearance.

The LED module provided by the 29th aspect of the present invention includes a strip-shaped substrate and a plurality of LED chips arranged on the substrate, and the plurality of LED chips are each of the substrate. A plurality of rows are arranged in the longitudinal direction and arranged at intervals in the lateral direction of the substrate, and the rows adjacent to each other among the plurality of rows are included in these rows. The plurality of LED chips are arranged in a staggered manner 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 29th aspect of the present invention, wherein the plurality of LED chips have a long rectangular light emitting surface in the thickness direction of the substrate. The plurality of light emitting units are included, and these 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 31st aspect of the present invention is the LED module provided by the 30th aspect of the present invention. They are lined up at regular intervals with short intervals.

The LED module provided by the 32nd aspect of the present invention is the LED module provided by the 29th aspect of the present invention, wherein the plurality of LED chips have a long rectangular light emitting surface in the thickness direction of the substrate. The plurality of light emitting units are included, and these plurality of light emitting units are arranged so that the short side of the light emitting surface is along the longitudinal direction of the substrate.

The LED module provided by the 33rd aspect of the present invention is the LED module provided by any of the 29th to 31st aspects of the present invention, and the plurality of rows are two rows.

The LED lighting device provided by the 34th aspect of the present invention includes the LED module provided by any of the 29th to 33rd aspects of the present invention and the substrate in the longitudinal direction of the substrate while supporting the substrate. It is provided with an elongated support member extending along the support member, and a diffusion cover connected to the support member, covering the plurality of LED chips, and diffusing light from the plurality of LED chips to be emitted to the outside. The diffusion cover includes a portion where the distance from the LED chip is the shortest in the longitudinal view of the substrate, and the degree of diffusing the light from the plurality of LED chips is larger 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 35th aspect of the present invention is the LED lighting device provided by the 34th aspect of the present invention, and the diffusion cover is from the LED chip in the longitudinal view of the substrate. The closer the distance is, the thicker it is formed.

The LED lighting device provided by the 36th aspect of the present invention is the LED lighting device 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 made of a material that diffuses the light from the LED chip more strongly than the material of.

The LED lighting device provided by the 37th aspect of the present invention is the LED lighting device provided by the 34th aspect of the present invention. In addition, it is composed of a diffuser member that diffuses the light from the plurality of LED chips.

The LED lighting device provided by the 38th aspect of the present invention is the LED lighting device provided by any of the 34th to 37th aspects of the present invention, and 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 the outer peripheral shape of the diffusion cover is elliptical with the LED chip as the center and the thickness direction of the substrate as the minor axis direction in the longitudinal direction of the substrate. be.

In such a configuration, the portion of the diffusion cover that is closer to the LED chip diffuses the light from the LED chip more strongly than the portion that is farther away 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 to occur between the portion far from the LED chip and the portion near the LED chip. Therefore, according to the second aspect of the present invention, the diffusion cover can further make the brightness uniform and improve the appearance at the time of light emission.

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

It is a main part perspective view which shows the LED lamp based on 1st Embodiment of this invention. It is an enlarged perspective view of the end cap shown in FIG. It is sectional drawing which follows the line III-III 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 connecting part of the LED lighting apparatus shown in FIG. It is a top view which shows another embodiment 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 connecting 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 of FIG. It is a top view which shows the connecting 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 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 into the lamp case shown in FIG. 15 and attached it to the ceiling. It is a figure which shows the state which built the LED lamp in the lamp case shown in FIG. 15, and attached a plurality of LED lamps side by side to the ceiling. FIG. 5 is a cross-sectional view taken along the line XVIII-XVIII of FIG. It is sectional drawing which follows the XIX-XIX line of FIG. It is an enlarged view of the main part of FIG. It is an enlarged plan view of a part of the lamp case shown in FIG. It is an enlarged bottom view of a part of the lamp case shown in FIG. FIG. 15 is an enlarged view of one end of the main body member shown in FIG. FIG. 15 is an enlarged view of the other end of the main body member shown in FIG. It is a figure which shows the connecting part of a plurality of lamp cases 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 apparatus provided with the LED module of FIG. It is sectional drawing of the main part of the LED lighting apparatus shown in FIG. 31. It is a top view of the LED module based on the 2nd Embodiment of this invention. It is a top view of the LED module based on the 3rd Embodiment of this invention. It is sectional drawing of the main part of the LED lighting apparatus based on 4th Embodiment of this invention. It is sectional drawing of the main part of the LED lighting apparatus based on 5th Embodiment of this invention. It is sectional drawing of the main part of the LED lighting apparatus based on 6th Embodiment of this invention. It is sectional drawing of the main part 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 LED lamps based on the first embodiment of the present invention. The LED lamp 501 of the present embodiment includes a tubular body 1 formed so as to extend long 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. It includes 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 by light from a plurality of LED modules 2 housed therein, and is used, for example, attached to a ceiling or the like to illuminate 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 supports a plurality of LED modules 2 and supplies electric power to the support member 11, 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, a 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 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. The base portion 113 and the 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 thereof. The outer portion 114 has a shape that covers 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, each outer portion 114 has a bulging 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 bulging portion 114b and recessed on 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 each 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 an arcuate 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 project inward in the y direction, and each has a surface that abuts on the locking surface 114d. The locking piece 12b is further provided with a portion that protrudes 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 while the locking piece 12b is fitted into the locking groove 114c on one side in the y direction. Is fixed to.

Each LED module 2 has a built-in LED chip, is configured to conduct with a wiring pattern (not shown) formed on the mounting surface 111a, and to emit light mainly in 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 closer ends of two adjacent LED modules 2 in the x direction is defined as the distance 81 between the LED modules 2. Of the plurality of LED modules 2, the LED module 2 located at the most end on one side in the x direction has only a distance 82 whose one end is shorter than the distance 81 from one end in the x direction of the support member 11. It is arranged so that it comes to a distant position. The LED module 2 located at the end of the other side of the plurality of LED modules 2 in the x direction is located at a position where the other end is separated from the other end of the support member 11 in the x direction by a distance of 82. It is arranged like this.

The end cap 3 is a component for preventing dust and the like from entering the inside of the cylinder 1, and is formed so as to block the end portion of the cylinder 1 in the x direction as shown in FIG. One side of the end cap 3 in the z direction has an arcuate outer circumference along the shape of the diffusion cover 12. FIG. 2 shows a perspective view of the end cap 3, and the outer circumference of the diffusion cover 12 is shown by a chain double-dashed line. The end cap 3 is installed so as not to form a gap between the end cap 3 and the diffusion cover 12, and as shown in FIG. 2, the end cap 3 has an exit surface 31 which is a surface continuous with the outer peripheral surface of the diffusion cover 12 and in the x direction. It includes a pair of protruding connecting plates 32. 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 surface of the base portion 113 of the bracket 112 as shown in FIG. Further, a screw through hole 32a penetrating in the y direction is formed in the pair of connecting plates 32, and the screw 13 is passed through the screw through hole 32a so that the pair of connecting plates 32 becomes the support 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 made of a transparent polycarbonate resin to which a diffusion material such as mercury chloride is added. Such an end cap 3 transmits the light from the LED module 2 while diffusing it. The ratio of the diffusing material in the end cap 3 is about the same as the ratio of the diffusing material in the diffusing cover 12.

In the present embodiment, the end portion 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 portion of the support member 11 on one side in the x direction. Further, the end portion of the end cap 3 attached to the other side of the tubular body 1 in the x direction on one side in the x direction is in close contact with the end portion of the support member 11 on the other side in the x direction. 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 distance 81 between the LED modules 2.

Each mount 4 is a component used when fixing the LED lamp 501 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 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 being attached to the ceiling or wall using screws.

The holder 42 is formed by, for example, 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 flexible portions 42b. It has a connecting portion 42c that connects the flexible portions 42b. The flexible portion 42b is shaped to support the locking piece 42a. When an external force is applied, the pair of flexible portions 42b can be elastically deformed in a direction in which the pair of locking pieces 42a are brought close to each other and separated 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 between them becomes smaller toward the upper side in the drawing in FIG.

The power conversion unit 5 has a function of converting, for example, commercial AC100V power into DC36V, 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 a plurality of electronic components 53 are mounted on the power supply board 52. The plurality of electronic components 53 include, 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 in which 12 LEDs connected in series with each other are paired. 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 installed mainly at the end in the x direction is incident on the end cap 3. Since the end cap 3 is made of a resin to which a 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 exit surface 31 in the z direction. Therefore, when the LED lamp 501 is installed on the ceiling and turned on, for example, the end portion of the LED lamp 501 in the x direction appears to be shining like the other parts to a person looking up from below.

FIG. 5 shows a part of the LED lighting device 601 configured by combining a plurality of the above-mentioned LED lamps 501 in a plan view. As shown in FIG. 5, in the LED lighting device 601, the plurality of LED lamps 501 are mounted on the ceiling or the wall so as to be arranged in a row 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 in order to show 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 distance between the LED modules 2 installed so as to sandwich the two end caps 3 is exactly 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 that has passed 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 from the exit surface 31 of the end cap 3 of the adjacent LED lamp 501 in the z direction. 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 exit surface 31 appears to be shining. Therefore, in the LED lighting device 601, the joint portion of the adjacent LED lamp 501 does not become dark. Therefore, by combining the LED lamps 501, it is possible to realize a long LED lighting device 601 that extends longer in the x direction and has a better appearance.

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

7 to 26 show other embodiments 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 those in the above embodiment.

FIG. 7 shows a part of the LED lighting device 602 configured by combining a plurality of the above-mentioned LED lamps 501 in a plan view. In the LED lighting device 602 shown in FIG. 7, a plate material 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 includes an emission surface 61 continuous with the emission surfaces 31 of the left and right end caps 3 in FIG. There is. The plate material 6 is formed of, for example, a transparent polycarbonate resin to which a diffusing material such as mercury chloride is added. The ratio of the diffusing material in the plate material 6 is about the same as the ratio of the diffusing material in the diffusing cover 12. Such a plate material 6 transmits the light from the LED module 2 that has passed through the end cap 3 while diffusing it. A part of the light diffused inside the plate member 6 is emitted from the emission surface 61 in the z direction.

Even in such an LED lighting device 602, since the plate material 6 seems to emit light as in the end cap 3, the joint portion of the adjacent LED lamp 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 formed between the left and right end caps 3 in FIG. It is preferable to select a plate material 6 having a thickness corresponding to the gap and fit it in the gap.

In the LED lighting device 601 as well, when a large number of LED lamps 501 are arranged in a row, a gap may occur between the ends of the adjacent LED lamps 501. In such a case, by using the plate material 6 in 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 on the outside of 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. 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 twice as long as the length of the support member 11 in the x direction of the end cap 3 in the x direction.

FIG. 8 shows a state near the end of the LED lamp based on 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 x-direction length of the diffusion cover 12, and has the same other configurations. FIG. 9 shows a view of the end cap 3 of the LED lamp 502 as viewed 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 mounted on the ceiling or the wall so as to be arranged in a row along the x direction. In FIG. 10, the distance between the LED lamps 502 is intentionally shown to be large for the sake of explanation.

The diffusion cover 12 in the present embodiment is formed so as to be longer in the x direction than the support member 11. Further, in the present embodiment, the end cap 3 is arranged inside the diffusion cover 12. The end cap 3 of the present embodiment is provided with 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 inward of the tubular body 1 along the x direction from the outer peripheral edge of the end cap 3. The outer peripheral surface of the umbrella portion 33 is integrated with the exit 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.

Further, the screw through hole 32a formed in the connecting plate 32 of the present embodiment is an elongated 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 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 such LED lamps 502 are connected, when a gap is formed between the LED lamps 502 as shown in FIG. 10, the end cap 3 is pulled out from the cylinder 1 to obtain the LED lamps 502. The gap can be closed with the umbrella portion 33. Since the umbrella portion 33 is a part of the end cap 3, the light from the LED module 2 is diffused and transmitted. Therefore, when the LED lighting device 603 is viewed from below in the z direction, the umbrella portion 33 appears to emit light. Therefore, the LED lighting device 603 is configured so that 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 based on the third embodiment of the present invention. The LED lamp 503 shown in FIGS. 11 and 12 is provided with 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 be farther from the exit 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 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 exit 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 the plurality of LED lamps 503 so that the inclined surface 31a and the inclined surface 31b are in contact with each other, but when arranging a large number of LED lamps 503, it is difficult to arrange them completely without gaps. In the present embodiment, even when a gap is formed between the end cap 3A and the end cap 3B, the inclined surface 31b appears to shine when the LED lighting device 604 is viewed from below in the z direction in FIG. Therefore, the LED lighting device 604 is configured so that 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 based on 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 the same as 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 so as to approach the exit surface 31 in the z direction toward the outside in the x direction. It is formed so as 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 portion 35 has an inclined surface 35a that is inclined so as to move away from the exit surface 31 in the z direction toward the outside in the x direction. The female portion 35 is formed so as to be recessed inward in the x direction as it approaches the exit surface 31 in the z direction so as to fit with the male portion 34, and is formed so as to be recessed inward in the x direction toward the center in the y direction. It is dented in.

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 portion 34 and the female portion of the end cap 3C attached to the ends of the connected LED lamps 504. 35 and 35 are designed to mesh with each other. It is desirable to install a plurality of LED lamps 504 so that the end caps 3Cs are in contact with each other, but when a large number of LED lamps 504 are arranged side by side, a gap may be formed between the end caps 3Cs. Even in such a case, what can be seen from the gap between the end caps 3Cs of the present embodiment is the inclined surface 35a, which looks shining like the exit surface 31. Further, the end cap 3C of the present embodiment is economical because it can be attached to both ends of the tubular body 1.

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

As shown in FIG. 15, the lamp case 650 includes a main body member 71, a connector accommodating portion 72, a terminal 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 the bolt member 75 as shown in FIG. The bolt member 75 is, for example, a male screw. 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 in one direction in the z direction, is formed so as to extend long in the x direction, and has a connecting portion 711 at one end in the x direction and a connecting portion 711 at the other end. It includes a connecting portion 712. 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 connecting portion 712 is formed with a pair of elongated holes 712a extending in the x direction. The elongated holes 711a and 712a have the same shape, and both of them allow the bolt member 75 to pass through. Further, the main body member 71 includes protrusions 713 protruding in the y direction from both side edges in the y direction. The protruding portion 713 has a shape having a groove extending long 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 but is exposed to the outside. The main body member 71 is fixed along the ceiling 750 when the protruding portion 713 comes into contact with the ceiling 750. Therefore, 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 71a is provided between the main body member 71 and the connector accommodating portion 72. The through hole 71a is used to pass a cable connecting 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 terminal 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 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 for fitting into the bolt member 75. A female screw corresponding to a 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 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 that is 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 elongated holes 711a and 712a in the x direction.

The outer plate portion 734 extends from the lower center of FIG. 20 of the plate portion 732 and the pair of inner wall portions 733, and is formed so as to appear as a frame shape in which the protruding portion 713 is extended in the z-direction view as shown in FIG. Has been done. The upright wall 735 stands up from both end edges of the outer plate portion 734 in the y direction and is formed along the both end edges of the projecting portion 713 in the y direction. As shown in FIG. 18, the position of the upper end portion in the drawing of the upright wall 735 in the z direction coincides with the position of the upper end portion of the protruding portion 713 in the z direction. The upright 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 protrusion 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-shape in cross section so as to overlap the outer periphery of the main body member 71. As shown in FIG. 25, the intermediate member 74 is a member used when connecting a plurality of lamp cases 650. The intermediate member 74 includes an edge portion 741 that fits into a groove provided in the protrusion 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 for fitting into the bolt member 75. 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 where they overlap with the elongated 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. 26.

When a plurality of lamp cases 650 are arranged in the x direction and mounted on the ceiling 750, when 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. A situation can occur in which it ends up. FIG. 26 shows a state in which the 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. Note that the LED lamp 501 is omitted in FIG. 26.

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 members 71, the positions of the bolt members 75 in the elongated holes 711a and 712a are shifted by shifting the positions of the bolt members 75. 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 is visible from the gap between the main body members 71 instead of the ceiling surface, deterioration of the appearance can be suppressed.

Further, the terminal member 73 can also be shifted in the x direction by shifting the position of the bolt member 75 in the elongated holes 711a and 712a. Therefore, even if the above-mentioned adjustment by the intermediate member 74 cannot cope with the problem, it can be dealt with by shifting the end members 73 of the lamp case 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-through hole 711b is provided instead of the elongated hole 711a. Other configurations are the same as those of the lamp case 650 shown in FIGS. 15 to 26. FIG. 27 shows a state when such lamp cases 650 are arranged side by side, as in FIG. 26. 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 intermediate member 74 can be connected to the connecting portion 711 by shifting the position of the bolt member 75 in the elongated hole 712a. , 712 can be attached. Further, 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-through hole 712b is provided instead of the elongated hole 712a. Other configurations are the same as those of the lamp case 650 shown in FIGS. 15 to 26. FIG. 28 shows a state when such lamp cases 650 are arranged side by side, as in FIG. 26. As shown in FIG. 28, even if there is a gap between the connecting portions 711 and 712 of the adjacent main body member 71, the intermediate member 74 can be connected to the connecting portion 711 by shifting the position of the bolt member 75 in the elongated hole 711a. , 712 can be attached. Further, 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. Further, it is also possible to make adjustments by shifting the terminal 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 freely redesigned.

For example, the number of LED modules 2 and the installation interval can be set as appropriate. In the above-described embodiment, the LED modules 2 are arranged at regular intervals, but even when the LED modules 2 are arranged irregularly, if the end cap 3 is 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-mentioned conditions. The LED module 2 located at the end in the x direction is located at the end in the x direction of the support member 11 so that the distance between the LED modules 2 is not extremely wide at the joint portion of the adjacent LED lamps 501 in the LED lighting device 601. It suffices if it is 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 adjacent LED lamps 501 to 504. In such a case, a gap may be generated between the adjacent lamp cases 650, but the intermediate member 74 having the same color as the main body member 71 can be seen from the gap between the lamp cases 650. Therefore, deterioration of the appearance can be prevented.

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

As shown in FIG. 29, the substrate 201 is made of, for example, glass epoxy, 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 shown, 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 so as to form two rows 202A and 202B along the longitudinal direction thereof. The light emitting unit 202 has an oblong light emitting surface 220 when one surface of the substrate 201 is viewed in the thickness direction. All the light emitting units 202 are arranged so 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 the rows 202A and 202B are arranged at equal intervals with an interval of 85 in the longitudinal direction of the substrate 201. The distance 85 is about the same size as the long side 220a of the light emitting surface 220. The rows 202A and 202B are offset 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 the present embodiment, the interval 85 is about 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, of course.

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

The LED chip 221 has, for example, a structure in which an n-type semiconductor layer and a p-type semiconductor layer and an active layer sandwiched between them are laminated. When the LED chip 221 is made of, for example, 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 a 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 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 is excited by blue light and emits yellow 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 on the side 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 is composed of 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 in a state of being mounted on the ceiling surface indoors, for example, and is elongated in the direction penetrating the paper surface in 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 in 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 recess 230a interposed therebetween.

The main body 230 is composed of a base plate 310 and a wing 320. The base plate 310 is formed in an elongated plate shape with the direction penetrating 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 ends of the base plate 310 in the y direction are bent downward in the z direction 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 the direction penetrating the paper surface of FIG. 31. Each bulging portion 311 is in contact with the wing portion 320.

The wing portion 320 is formed in an umbrella shape as a whole when viewed in the direction penetrating the paper surface of FIG. 31, and has a bottom plate portion 321, two wall portions 322, and a regulation portion 323 inside. The bottom plate portion 321 is parallel to the base plate 310. The two wall portions 322 stand upright 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 form a recess 230a for accommodating the LED unit 2. A holder 231 which is an elastic member is arranged on the wall portion 322 on one side, and a regulation member 323 is formed on the wall portion 322 on the other side. The regulating member 323 has a plate shape protruding from the wall portion 322 in the y direction, and is perpendicular to the wall portion 322. The regulating member 323 is installed, for example, over the substantially overall length of the wing portion 320 in the direction penetrating the paper surface of FIG. 31.

The holder 231 is formed by, for example, bending a metal plate, 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 away from the LED module 511 in the y direction. The flexible portion 231b is inclined so as to move away from the bottom plate portion 321 in the z direction and closer to the LED module 511 in the y 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 formed so as to be elastically bendable 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. A plurality of the holders 231 are installed so as to be lined up along the direction penetrating the paper surface of FIG. 31.

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

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, for example, aluminum. The base portion 241 has a U-shaped cross section, and a recess 410 for mounting the substrate 201 of the LED module 511 is formed on the outside of the bottom surface thereof. The recess 410 is recessed upward in the z direction, and the substrate 201 is fitted into the recess 410. The outer portion 242 has a shape that covers 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 emission 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 regulating portion 323.

Further, 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 in the z direction on the side opposite to the emission 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 emission direction of the LED module 511.

As shown in FIGS. 31 and 32, the diffusion cover 205 has an arcuate cross section extending in a direction penetrating the paper surface of the figure, and is made of, for example, a milky white resin that transmits light from the LED module 511 while diffusing it. As shown in FIG. 31, locking pieces 251,252 are formed on 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 a region centered directly below the LED module 511 in the z direction and having a constant width in the y direction. The width of the central portion 205a in the y direction is formed so as to be longer than the width of the light emitting portions 202 in the y direction arranged in a staggered arrangement. The central portion 205a corresponds to an example of a strong diffusion portion which is a main part of the present invention.

The power conversion unit 206 functions to convert, for example, commercial AC100V power to DC36V, 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 a plurality of electronic components 263 are mounted on it. 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 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 operations 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 units 202 arranged in a staggered manner form a light emitting region having a certain extent in the longitudinal direction and the lateral direction of the substrate 201. The 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.

Moreover, in the light emitting region, since the light emitting unit 202 constituting one row 202A is located between the light emitting units 202 forming the other row 202B, it is unlikely to overlap with the light from the other row 202B. As a result, the light emitting region including the two rows 202A and 202B is unlikely to generate a luminance distribution having a steep tendency, and forms a luminance distribution that gradually spreads in the lateral direction of the substrate 201.

That is, the light emitting region does not appear to shine in a linear manner, but appears to shine 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 staggered arrangement, it is possible to increase the total amount of light and to make the brightness uniform.

In the LED lighting device 611 of the present embodiment, the thicker the portion of the diffusion cover 205 is formed, the more the light is diffused and the light transmittance is lowered. Therefore, the central portion 205a of the diffusion cover 205 has a value having a smaller light transmittance than the other regions. For example, the light transmittance in the central portion 205a is about 75%, and the light transmittance in the other regions is about 85%.

The diffusion cover 205 is formed so that the distance from the LED module 511 is the smallest in the central portion 205a, and the distance from the central portion 205a in the y direction increases. Therefore, the intensity of the light from the LED module 511 reaching the central portion 205a is larger than the intensity of the light from the LED module 511 reaching the other region.

According to the LED lighting device 611, by reducing the light transmittance in the central portion 205a where the relatively strong light reaches, the light emitted from the central portion 205a and the light emitted from the other regions are about the same. Becomes the strength of. Therefore, in the LED lighting device 611, unevenness of the 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 dots or in rows 202A and 202B. Can be prevented. Therefore, according to the LED lighting device 611, the diffusion cover 205 can further make the brightness uniform and improve the appearance at the time of lighting.

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

In the LED module 512 based on the second embodiment shown in FIG. 33, the light emitting portions 202 of the rows 202A and 202B are arranged at equal intervals with an interval 86 in the longitudinal direction of the substrate 201. This interval 86 has a dimension shorter than the long side 220a of the light emitting surface 220. The rows 202A and 202B are offset 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 staggered arrangement at narrow intervals as compared with those according to the first embodiment, and the number is large. According to 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 so that the short side 220b of the light emitting surface 220 is along the longitudinal direction of the substrate 201. The light emitting portions 202 of the rows 202A and 202B are arranged at equal intervals in the longitudinal direction of the substrate 201 with an interval of 87. The rows 202A and 202B are offset 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 manner. According to such a configuration, the distance 87 between the light emitting units 202 in each of the rows 202A and 202B can be appropriately set according to the directivity of the LED chip, and the brightness can be made uniform. 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 be shorter than the short side 220b, of course. In such a case, the number of light emitting units 202 can be increased and the total amount of light can be increased.

In the LED lighting device based on 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 light emitted from the diffusion cover 205.

In the LED lighting device based on the fifth embodiment shown in FIG. 36, the diffusion cover 205 is formed so as to gradually increase in thickness from the end to the center in the y direction. Such a diffusion cover 205 becomes thicker as the distance from the LED module 511 is closer. This makes it possible to further suppress unevenness of the light emitted from the diffusion cover 205 when the LED lighting device is lit. Therefore, the appearance of the LED lighting device when it is lit 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 a milky white resin having a lower light transmittance than 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 case of 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 diffusion cover 205 at the portion where the diffusion member 250 is not provided is about 85%. The diffusion member 250 is made of, for example, the same milky white resin as the diffusion cover 205, and is formed so that the light transmittance at the central portion 205a on which the diffusion member 250 is stacked is about 75%. Even if the diffusion cover 205 provided with such a diffusion member 250 is used, it is possible to suppress unevenness of the light emitted from the diffusion 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 embodiment. The specific configuration of each part of the LED module and the LED lighting device according to the present invention can be freely redesigned.

For example, the LED module is not limited to the configuration in which the light emitting unit is mounted on the substrate, and the LED module may be configured in which the LED chip is directly mounted on the substrate. The substrate is not limited to an elongated strip shape, and may be a rectangular shape or a circular shape. 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 color light, or may be arranged in a plurality of rows in the longitudinal direction of the substrate. When an RGB color LED chip is used, the LED lighting device can also be applied as, for example, an electric 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 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 module 3A, 3B, 3C end cap 4 mount 5 power conversion Part 6 Plate material 11 Support member 12 Diffusion cover 12a, 12b Locking piece 13 Screw 31 Exit surface 31a, 31b Inclined surface 32 Connecting plate 32a Screw through hole 33 Umbrella part 34 Male part 34a Inclined surface 35 Female part 35a Inclined surface 41 Base metal fittings 41a Hole 42 Holder 42a Locking piece 42b Flexible 42c Connecting 51 Case 52 Power supply board 53 Electronic parts 54 Connector 61 Exit surface 71 Main body member 71a Through hole 72 Connector housing 73 Termination member 74 Intermediate member 74a Protruding part 75 Bolt member 111 Board 111a Mounting surface 112 Bracket 113 Base part 114 Outer part 114a Locking groove 114b Protruding part 114c Locking groove 114d Locking surface 711,712 Connecting parts 711a, 712a Long holes 712b, 712b Screw through holes 713 Protruding parts 731,732 Plate part 731a Protruding 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 Board 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 part 250 Diffuse member

Claims (3)

With a strip-shaped board
It is equipped with a plurality of LED chips arranged on the above board.
Each of the plurality of LED chips is arranged in the longitudinal direction of the substrate, and forms a plurality of rows arranged at intervals in the lateral direction of the substrate.
Columns each other adjacent to each other among the plurality of columns, the plurality of LED chips included in these columns that are the staggered offset in the longitudinal direction of the substrate, and the LED module,
An elongated support member extending along the longitudinal direction of the substrate while supporting the substrate,
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 light to the outside.
Is equipped with
The diffusion cover includes a central portion having the shortest distance from the LED chip in the longitudinal direction of the substrate.
The width of the central portion of the substrate in the lateral direction is formed to be longer than the width of the substrate in the lateral direction in which the plurality of LED chips are arranged in a staggered arrangement.
The central portion is formed to be thicker than the other portions of the diffusion cover.
The LED lighting device is characterized in that the central portion has a lower light transmittance than the other portions of the diffusion cover . The plurality of LED chips are included in a plurality of light emitting portions having a long rectangular light emitting surface in the thickness direction of the substrate.
The LED lighting device according to claim 1, wherein the plurality of light emitting units are arranged so that the long side of the light emitting surface is arranged along the longitudinal direction of the substrate. The LED lighting device according to claim 2, wherein in each of the above rows, the plurality of light emitting units are arranged at equal intervals at intervals shorter than the long side of the light emitting surface.

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