TW202225596A - Luminaire - Google Patents

Abstract

The present invention provides a flexible substrate and a luminaire using the flexible substrate, whereby the degree of decrease in brightness toward the distal end is small when the product is made long, and the brightness of light emitter does not become uneven even when the product is cut. The luminaire of the present invention is such configured that, each unit has a first energization wiring that energizes a first outward wiring and a second return wiring via a first light emitting element, and a second energization wiring that energizes a first return wiring and the second return wiring via a second light emitting element, the power supplied from the front end to the first outward wiring is supplied to the first light emitting element by the first energizing wiring and returned to the second return wiring in each unit, the power supplied from the front end to the second outward wiring is once returned to the first return wiring in a reverse direction via the first energization part at the distal end, and then supplied to the second light emitting element by the second energizing wiring and returned to the second return wiring in each unit.

Description

lighting fixtures

The present invention relates to a lighting fixture arranged with light-emitting elements.

Conventionally, there has been known a product called linear lighting in which LED light-emitting bodies are arranged on a flexible substrate. This product is used for example in outdoor façade, indirect lighting and under-cabinet lighting, etc. Generally speaking, it is designed to fit the size of the installation part, and it can be cut between 50mm for the shorter length and 5m for the longer length. Any length can be used (for example, refer to Patent Document 1).

As shown in FIG. 3 , generally, the wiring 104 on the positive electrode side and the wiring 106 on the negative electrode side are arranged on the flexible substrate 102 one by one. (In some of the inventions, there is a lighting fixture with a structure in which the energizable capacitance is increased by using a plurality of flexible substrates 102 and additionally providing bypass wiring (for example, refer to Patent Document 2)). In these patent documents, generally, the power supplied from the front end 108 of the long side of the lighting fixture will first take the wiring 104 from the front end 108 to the positive side of the end 110 on the flexible substrate 102 as an outgoing path, and according to the distance The power supply side is closer to the order of supplying power to all the light emitting elements 112 (in this case, the resistance is included in the light emitting element 112 ) arranged in each cell 111 and turning them on.

The electric power for lighting the light-emitting element 112 of each unit 111 is returned to the front end portion through the wiring 106 on the negative side from the end 110 to the front end 108 as a return path. By this structure, the electric power system is conducted Into the unit 111 closer to the power supply side and the resistance of the wiring 104 belonging to the positive side of the outgoing path, the voltage will gradually lose, and only the unit 111 near the end of the long-side lighting fixture can supply power with a lower voltage .

(prior art literature)

(patent literature)

Patent Document 1: Japanese Patent Laid-Open No. 2013-118169

Patent Document 2: Japanese Patent Laid-Open No. 2011-090849

However, this type of lighting fixture is usually powered from the front end 108 of one long side of the fixture. Therefore, when it is used as a product with a length of, for example, 5 m or more, the wiring on the flexible substrate 102 for supplying power to the light-emitting element 112 is required. the voltage drop, so the end portion becomes darker than the front end.

In this regard, although the thickness of the wiring on the flexible substrate 102 can be increased, as shown in Patent Document 2, a bypass wiring can be provided to increase the capacitance that can be energized and improve the metal purity of the wiring. The resistance value is reduced, but the effect of reducing the brightness of the end portion is limited in products with a length of 5 m or more.

In addition, although a resistor is connected to the light-emitting element 112 , by connecting a resistor with a relatively large resistance at the front end and a resistor with a relatively small resistance at the end, the luminance can be technically uniformized. However, in this case, it is necessary to make the resistance of the front end constant, and when, for example, a 5 m luminaire is cut into five pieces per 1 m, the brightness of each luminaire becomes uneven.

For these reasons, it is difficult to develop a device that, even if set to a length of 5 m or more, the brightness of the end 110 is hardly lowered, and when cut to an arbitrary length, the flexible substrates 102 that are cut are aligned on each of the cut flexible substrates 102 . Each of the lighting fixtures having the light-emitting element 112 is a lighting product having the same brightness.

Therefore, for example, in the outer wall of a building with a height of 30m (equivalent to an 8-story building), when linear lighting is to be installed in the vertical direction, six lighting fixtures must be installed every 5m, and then the power supply to each lighting fixture must be installed. Holes are generally opened on the outer wall of the building according to each floor. Therefore, not only the problems of safety and construction, but also the economical burden is also large.

The object of the present invention is to provide a flexible substrate and a lighting device using the flexible substrate, the flexible substrate has a small decrease in luminance to the end when the product is made into a long shape, even if the flexible substrate is made into a long shape. The brightness of the light-emitting body does not become uneven when it is cut off.

The lighting fixture of the present invention is a kind of one in which the first outgoing wiring, the second outgoing wiring, the first returning wiring, and the second returning wiring are arranged from the front end to the end in the longitudinal direction, and a plurality of light-emitting elements are arranged, The lighting fixture is composed of:

A first energizing portion for energizing the second outgoing wiring and the first returning wiring is formed at the end;

A plurality of units are connected with a predetermined number of the first light-emitting element and the second light-emitting element as a group;

Each of the units includes: a first energization wire for energizing the first outgoing wire and the second return wire through the first light-emitting element; and a second energization wire for energizing the first outgoing wire through the second light-emitting element The return wiring and the aforementioned second return wiring are energized;

The power supplied from the front end to the first outgoing wiring is supplied to the first light-emitting element through the first current-carrying wiring in each of the units, and is returned to the second return wiring;

The electric power supplied from the front end to the second outgoing wiring is first returned to the first return wiring in the opposite direction through the first energizing portion at the end, and then supplied to each of the units through the second energizing wiring. to the second light-emitting element and backflow to the second return wiring.

In this way, the first outgoing wiring, the first energizing wiring, and the second return wiring belonging to the first wiring system, and the second outgoing wiring, the first energizing portion, the first The return wiring and the second return wiring can simultaneously supply power in the forward direction from the tip to the tip and power in the opposite direction from the tip to the tip. Therefore, when the product is made into an elongated shape, the degree of decrease in luminance to the end is small, and even if it is cut between cells and the size is changed to an arbitrary length, the luminance of the light-emitting body of each cut cell can be provided. Lighting fixtures that do not become uneven.

Furthermore, in the lighting fixture of the present invention, a connection point is formed between the aforementioned units.

In this way, by providing the connection point, the first current-carrying portion for short-circuiting the second outgoing wiring and the first returning wiring can be provided at the newly provided end that has been cut off. Thereby, even if it cuts between any cell, the effect of this invention can be maintained.

Furthermore, in the lighting fixture of the present invention, in the front end, a first lead wire for supplying power to the first outgoing wiring is connected to the first outgoing wiring;

A second energization portion for energizing the first outgoing wiring and the second outgoing wiring is formed on the front end side.

Thereby, electric power can be simultaneously supplied to both the 1st wiring system and the 2nd wiring system from the same wire.

According to the present invention, when the product is made into a long shape, the degree of decrease in luminance to the end is small, and even if it is cut, the luminance of the luminous body does not become uneven. That is, in a long flexible lighting fixture with a length of far more than 5m, the problem that the brightness of the terminal is reduced due to the voltage drop can be solved, and even if it is cut off between any units, the brightness of the luminous body will not change. unevenly.

Furthermore, by sealing the lighting fixture of the present invention with insulating softening resin, etc. and making it into a product, for example, it is possible to install a whole 30 m (equivalent to 8 m) without dividing the outer wall lighting of a high-rise building every 5 m. Floor height) lighting fixtures. Therefore, it is possible to remarkably improve safety, workability, and maintenance economy.

Moreover, even if it cuts any part, it can be used as a product without any doubt, and it is also economical.

2: Tape-and-reel light bar

4: Substrate

6: Flakes

8: Circuit

10: Wafer

11: Resistor body

12: Front end

14: Wire

14a: First wire

14b: Second wire

16: End

17: Unit

19, 19a1, 19b1, 19b2, 19c2: connection points

22: First route wiring

24: Second route wiring

26: First return wiring

28: Second return wiring

32: The first power-on wiring

34: Second power-on wiring

36: The second electrification department

38: The first electrification department

102: Flexible substrate

104: Wiring

106: Wiring

108: Front End

110: end

111: Unit

112: Light-emitting element

FIG. 1 is a perspective view showing a tape-and-reel light bar according to an embodiment.

FIG. 2 is a conceptual diagram showing the circuit configuration of the printed wiring built in the tape-and-reel light bar of the embodiment.

FIG. 3 is a conceptual diagram showing the construction of a conventional circuit.

Hereinafter, with reference to the drawings, a tape-and-reel light bar is taken as an example to describe the lighting fixture of the embodiment of the present invention. FIG. 1 is a plan view showing a tape-and-reel light bar 2 of the lighting apparatus according to the embodiment, and FIG. 2 is a plan view showing a circuit 8 built in the printed wiring of the tape-and-reel light bar 2 .

As shown in FIG. 1 , the tape-and-reel light bar 2 is a long-shaped product extending in one direction, and the tape-and-reel light bar 2 is provided with a substrate 4 , a sheet 6 , an LED chip 10 , and a resistor 11 , and is located in the The lead wire 14 is provided on the front end 12 side, and the distal end 16 side is opened.

Here, the substrate 4 is a flexible strip-shaped plate formed by FPC (Flexible Print Circuits). The substrate 4 is constituted by a buildup of a plurality of wiring layers to which printed wirings are applied.

The sheet 6 is an insulating film formed of, for example, synthetic resin, and covers the surface of the substrate 4 except for the portion where the LED chip 10 or the resistor 11 is mounted.

The LED chips 10 are light-emitting elements arranged in a row on the surface of the substrate 4 along the longitudinal direction at predetermined intervals. In addition, in the present embodiment, the LED chips 10 form a set of six, and the substrate 4 is formed by connecting each unit 17 on which a set of LED chips 10 is mounted. Furthermore, in FIG. 2 , an illustration of three units 17 is schematically shown.

The resistors 11 have a function of limiting the input current in order to drive the LED chip 10 normally, and are arranged in a row on the surface of the substrate 4 at predetermined intervals along the longitudinal direction, similarly to the LED chip 10 . In addition, in this embodiment, in each cell 17, the resistor body 11 which comprises a set of four is mounted.

In addition, a plurality of connection points 19 are provided at the boundary of each unit 17 in the direction orthogonal to the longitudinal direction. The connection point 19 is a point at which the wiring (the first outgoing wiring 22 , the second outgoing wiring 24 , the first return wiring 26 , and the second return wiring 28 described later) is exposed on the surface of the substrate 4 .

With the arrangement of the connection points 19, when the tape-and-reel light bar 2 is cut between the units 17, the wires 14 can be connected to the substrate 4 by solder or the like in the newly installed front end 12, and can be connected to the newly installed end 16. Short-circuit outgoing wiring and return wiring, etc.

Moreover, in the board|substrate 4, the some through-hole which is not shown in figure is formed. These through-holes are those that allow conduction between a plurality of wiring layers laminated in the substrate 4 .

In addition, in the present embodiment, although the substrate 4 connected with three units 17 is exemplified, the length from the front end 12 to the end 16 of the substrate 4 can be set as the shortest as the dimension length of a single unit 17, and the longest as Any length above 5m.

Furthermore, as shown in FIG. 2 , in the circuit 8 of the substrate 4 , the first outgoing wiring 22 , the second outgoing wiring 24 , and the first return wiring are arranged in a straight line from the front end 12 to the end 16 in the longitudinal direction. The wiring 26 and the second return wiring 28 .

In addition, in each unit 17, a first energization wire 32 and a second energization wire 34 are further arranged. Here, the first energization wiring 32 energizes the first outgoing wiring 22 and the second returning wiring 28 from the front end 12 side via the odd-numbered LED chips 10 (first light-emitting elements). Similarly, the second energization wiring 34 energizes the first return wiring 26 and the second return wiring 28 from the front end 12 side via the even-numbered LED chips 10 (second light emitting elements).

Furthermore, in the front end 12, the second current-carrying portion 36 for energizing the first outgoing wiring 22 and the second outgoing wiring 24 is connected to the connection points 19a1 and 19b1 by soldering or the like to be short-circuited, and in the end 16, the first The first energizing portion 38 to which the two outgoing wirings 24 and the first returning wirings 26 are energized is connected to the connection points 19b2 and 19c2 by soldering or the like and is short-circuited.

Next, the current flow in the circuit 8 will be described. First, when power is supplied from the first lead wire 14 a to the first outgoing wiring 22 , the power is branched to the first energizing wiring 32 at the point A. be diverted After power is supplied to the odd-numbered LED chips 10 (first light-emitting elements) from the front end 12 side and turned on, the power is supplied to the second return wiring 28 and returned to the second lead 14b.

The unshunted power will flow directly through the first outgoing wiring 22, but will be shunted to the first energizing wiring 32 at the point B of the second unit 17 from the front end 12 side, and will pass through the odd-numbered LED chips 10 (th. A light-emitting element), the second return wiring 28 is returned to the second wire 14b. The same operation is repeated for the third unit 17 from the front end 12 side.

On the other hand, when power is supplied from the first lead wire 14 a to the second outgoing wiring 24 via the second energizing portion 36 , the electric power first passes directly through the second outgoing wiring 24 and flows to the terminal 16 . Next, it is folded back at the end 16 through the first energizing portion 38 , and is returned to the first return wiring 26 from the end 16 toward the front end 12 .

Next, the electric power is branched to the second energization wiring 34 at the point D of the cell 17 on the side of the extreme end 16 . The branched power is supplied to the even-numbered LED chips 10 (second light-emitting elements) from the front end 12 side and turned on, then supplied to the second return wiring 28 and returned to the second lead 14b.

Although the unshunted power flows directly from the end 16 toward the front end 12 through the first return wiring 26, it is shunted from the end 16 side to the second current-carrying wiring 34 at the point E of the second unit 17, and passes through the first return line 26. The even-numbered LED chips 10 (second light emitting elements) and the second return wirings 28 are reflowed to the second wires 14b. The same operation is repeated for the third unit 17 from the end 16 side.

According to the invention of this embodiment, by arranging the first outgoing wiring 22, the first current-carrying wiring 32, and the second returning wiring 28 belonging to the first wiring system on the same circuit 8, and the The second outgoing wiring 24 , the first energizing portion 38 , the first returning wiring 26 , and the second returning wiring 28 can simultaneously supply power in the forward direction from the front end 12 to the end 16 , and simultaneously supply power from the front end 12 to the end 16 . The end 16 flows power in the opposite direction to the front end 12 . Therefore, it is possible to provide a lighting fixture which, when the product is made into an elongated shape, has a small reduction in luminance up to the end 16, and which can be provided even in a single When the cells 17 are cut and the size is changed to an arbitrary length, the brightness of the LED chips 10 of the cut cells 17 does not become uneven.

Furthermore, even if the tape-type light bar 2 is cut between any one of the units 17, the brightness of the light-emitting body will not become uneven, so the size of the product can be changed to any length, and it can be used as a borrower. Individual lighting fixtures separated by being cut off. Furthermore, even if it is cut in any part, it can be used as a product without hindrance, so it is also economical.

Furthermore, by sealing the tape-and-reel light bar 2 with insulating softening resin, etc. and making it into a product, for example, it is possible not to divide the lighting of the outer wall of a high-rise building every 5m, but to install it as a whole 30m (equivalent to 30m). Lighting fixtures on the 8th floor). Therefore, it is possible to remarkably improve safety, workability, and maintenance economy.

In addition, when the tape-and-reel light bar 2 is cut between the units 17 by the arrangement of the connection points 19 , the new unit 17 is prepared by connecting the wires 14 to the substrate 4 in the newly installed front end 12 . By connecting the connection point 19 of the end 16 and the newly installed unit 17 of the front end 12 of the newly installed unit 17 with solder, etc., the tape-and-reel light bar 2 can also be extended.

Although this method is commonly used in the conventional connection point 19, in the present invention, the first energizing portion 38 connecting the connection points 19b2 and 19c2 can be arranged in the newly established end 16, thereby enabling the second The outgoing wiring 24 and the first returning wiring 26 are short-circuited. Therefore, even if cutting is performed between any of the units 17 constituting the tape-and-reel light bar 2, the above-mentioned effects can be maintained.

Furthermore, in the front end 12, the connection points 19a1, 19b1 are connected, and the second current-carrying portion 36 is soldered or the like, whereby electric power can be simultaneously supplied from the same lead wire 14 to the first wiring system and the second wiring system. both sides of the system.

In addition, in the above-mentioned present embodiment, each unit 17 is not necessarily constituted by a set of six LED chips 10 , and four or eight LED chips 10 may be installed in the unit 17 . Likewise, the resistors 11 are not necessarily a set of four, and can also be built in the LED chip 10 .

In addition, in the above-mentioned present embodiment, although the case where the first energizing portion 38 and the second energizing portion 36 are soldered is exemplified, these cases may be short-circuited by energizing substances other than solder. For example, the first conducting portion 38 or the second conducting portion 36 may be a wire or a jig, and may be connected by a terminal or the like. In the case of replacing with a wire, for example, the first wire 14a whose front end is divided into two sides can be connected to the connection points 19a1 and 19b1 and used as the second energizing part 36 .

In addition, in the above-mentioned present embodiment, the substrate 4 may be inserted into the hollow tubular soft resin, or may be covered by the soft resin. Moreover, in the above-mentioned embodiment, although the surface of the substrate 4 is covered by the sheet 6 made of resin, the substrate 4 may not be covered by the sheet 6 .

In addition, in the above-described present embodiment, the wiring may be arranged only on one side of the substrate, or may be arranged on both sides of the substrate 4 . Furthermore, the wiring layer constituting the circuit 8 does not have to be a multiple layer, and may be a single layer.

In addition, in the above-mentioned present embodiment, although the unit 17 may be a single unit, four or more units may be connected.

In addition, in the above-mentioned embodiment, although the connection point 19 of the shape called an island (land) is illustrated, the shape of the connection point 19 is not limited to the shape shown in this embodiment. That is, the connection point 19 is not only used for the connection of the generally used wire 14, and when the size of the tape-and-reel light bar 2 is changed, the purpose of its setting is to use solder or the like to achieve the present invention afterwards. There is no short circuit between wirings, so it is not necessary to have the shape of an island, and electrodes, etc. may also be installed.

8: Circuit

10: Wafer

11: Resistor body

12: Front end

14: Wire

14a: First wire

14b: Second wire

16: End

17: Unit

19, 19a1, 19b1, 19b2, 19c2: connection points

22: First route wiring

24: Second route wiring

26: First return wiring

28: Second return wiring

32: The first power-on wiring

34: Second power-on wiring

36: The second electrification department

38: The first electrification department

Claims (3)

A lighting fixture is provided with a first outgoing wiring, a second outgoing wiring, a first returning wiring, and a second returning wiring from the front end toward the end in the longitudinal direction, and a plurality of light-emitting elements are arranged, the lighting Apparatus group composition: A first energizing portion for energizing the second outgoing wiring and the first returning wiring is formed at the end; A plurality of units are connected with a predetermined number of the first light-emitting element and the second light-emitting element as a group; Each of the units is provided with: a first energizing wire for energizing the first outgoing wire and the second return wire through the first light-emitting element; and a second energizing wire for energizing the first outgoing wire through the second light-emitting element The return wiring and the aforementioned second return wiring are energized; The electric power supplied from the front end to the first outgoing wiring is supplied to the first light-emitting element through the first current-carrying wiring in each of the aforementioned units, and is returned to the second return wiring, The electric power supplied from the front end to the second outgoing wiring is first returned to the first return wiring in the opposite direction through the first energizing portion at the end, and then supplied to each of the units through the second energizing wiring. to the second light-emitting element and backflow to the second return wiring. The lighting fixture according to claim 1, wherein a connection point is formed between the units. The lighting fixture according to claim 1 or 2, wherein, in the front end, a first lead wire for supplying electric power to the first outgoing wiring is connected to the first outgoing wiring, A second energization portion for energizing the first outgoing wiring and the second outgoing wiring is formed on the front end side.

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