JP5233351B2 - LED lighting unit, LED lighting device, and LED lighting unit connector - Google Patents

Description

  The present invention relates to an illumination unit (hereinafter referred to as an LED illumination unit) using an LED (light emitting diode), an LED illumination device, and an LED illumination unit connection connector, in particular, their structure, connection of an LED circuit of the LED illumination unit. And its pattern wiring.

  A conventional LED lighting device supplies power to an LED lighting unit used as a light source portion of the device from a DC (direct current) power source via a cable harness and a connector mounted on an LED mounting surface of the LED lighting unit. ing. In order not to impair the design of the LED lighting device, it is not preferable to connect the cable harness in a state that is visible to the user of the device. Further, when the connector is disposed at the left end or the right end of the LED lighting unit, the cable harness must be disposed at the left side or the right side of the LED lighting unit, which is a design limitation.

  Further, even when the connector is arranged at the center of the LED lighting unit, it is necessary to arrange the connector in a certain direction from the pin arrangement of the connector. Accordingly, when the LED lighting unit is incorporated into the LED lighting device, it is necessary for an operator or the like to perform attachment while recognizing the direction of the lighting unit, and workability is lacking.

  In general LED lighting units, a constant current circuit may be disposed on the LED mounting surface of the LED lighting unit in order to obtain a constant luminous flux by keeping the LED driving current constant. However, this method requires an area for mounting a constant current circuit on the LED mounting surface, and may hinder the realization of a small-sized LED lighting unit having a high luminous flux at a low price.

In addition, in order to physically guide the arrangement direction of the conventional LED illumination unit in a predetermined direction, the LED illumination device using electrodes having different shapes (see Patent Document 1) and the LED circuit of the conventional LED illumination unit in a predetermined direction An LED light source (see Patent Document 2) that uses a rectifier diode or the like in order to supply a drive current is known.
Japanese Patent Laid-Open No. 2003-45224 Japanese Patent Application Laid-Open No. 2005-276979

  The present invention has been made to solve the above-described conventional problems, and is an LED lighting unit that can be mounted and fixed to an LED lighting device without identifying (consciously) the left and right directions of the line, and can be realized in a small size and at low cost. The purpose is to provide.

  Another object of the present invention is to provide a small and inexpensive LED lighting device. Another object of the present invention is to provide a connector for connecting an LED illumination unit that can easily attach and detach the LED illumination unit and can reliably hold the LED illumination unit.

The LED lighting unit according to the present invention includes an LED mounting substrate, a plurality of LEDs mounted on the upper surface of the substrate, and a pattern wiring that electrically connects the plurality of LEDs on the substrate to form an LED circuit. And a first connector for connecting a power source, which is disposed in the central portion in the longitudinal direction on the lower surface side of the substrate and is electrically connected to the LED circuit. The connector has a plurality of connection terminals, and the plurality of connection terminals are configured so that the polarity relationship of the drive voltage assigned to each of the connection terminals is point-symmetric with respect to the longitudinal center of the LED lighting unit. The plurality of LEDs are arrayed and mounted in a line on the upper surface of the substrate, and part of the pattern wiring of the LED circuit extends from the longitudinal center of the substrate to both ends of the substrate. With headed extending linearly are formed so as to cover continuously the top surface of the substrate between the LED adjacent, in that the LED circuit regardless Swiveling of the LED lighting unit can be turned on and driven Features.

  It is desirable that the pattern wiring covers 40% or more of the upper surface of the substrate. The pattern wiring desirably has irregularities on the surface. The pattern wiring desirably has a width equal to or greater than the width of the LED in the short direction of the substrate.

  Furthermore, it is desirable to have a cover disposed on the upper surface side of the substrate so as to cover the plurality of LEDs. It is desirable that the cover has a claw portion that can be locked and detached from a second connector fitted to the first connector. The maximum width of the cover is preferably 15 mmφ or less. It is preferable that the circuit formed on the upper surface of the LED mounting substrate does not include a constant current circuit.

  The plurality of LEDs are divided into a first group and a second group, and the LEDs in each group are connected in series to form an LED series circuit.

  In an example of the LED circuit, one end of the LED series circuit in the first group is connected to the first connection terminal of the first connector, and one end of the LED series circuit in the second group is the second of the first connector. The connection terminal and the third connection terminal are connected. The other end of the LED series circuit in the first group and the other end of the LED series circuit in the second group are connected, and the second connection terminal and the third connection terminal are arranged on both sides of the first connection terminal. The connection terminals are arranged in a line as a whole.

  In another example of the LED circuit, one end of the LED series circuit in the first group is connected to the first connection terminal and the second connection terminal of the first connector, and one end of the LED series circuit in the second group is The third connection terminal and the fourth connection terminal of the first connector are connected. The other end of the LED series circuit in the first group and the other end of the LED series circuit in the second group are connected, and the four connection terminals include a first connection terminal, a third connection terminal, The two connection terminals and the fourth connection terminals are arranged in the order corresponding to each corner of the quadrilateral.

The LED lighting device of the present invention is an LED lighting device comprising a single or a plurality of LED lighting units each having an LED circuit, and a support that supports the LED lighting unit, wherein the LED lighting unit is an LED. A mounting board; an LED circuit mounted on the upper surface of the board; and a first connector having a plurality of connection terminals for power connection disposed in a longitudinal central portion of the board; The plurality of connection terminals are arranged so that the polarity relationship of the drive voltage assigned to each of the connection terminals is point-symmetric with respect to the longitudinal center of the LED lighting unit, and the plurality of LEDs are arranged on the substrate. It is arranged and mounted on the upper surface in a line, and a part of the pattern wiring of the LED circuit extends in a line from the center in the longitudinal direction of the substrate toward both ends of the substrate. A is formed so as to cover continuously the top surface of the substrate between the LED adjacent the LED lighting unit, while being supported by the support regardless of the left and right direction of the first connector The LED circuit is driven to be lit.

  The support preferably has a second connector that can be connected regardless of the left-right orientation of the first connector. The second connector preferably includes a pair of spring portions extending in the longitudinal direction of the substrate, and the pair of spring portions abuts and presses against the lower surface of the LED lighting unit. The support may further include a power storage unit that stores a DC power source that supplies an LED driving current to the LED circuit.

The LED lighting unit connection connector of the present invention includes an LED mounting substrate, a plurality of LEDs mounted on the top surface of the substrate, and an LED circuit formed by electrically connecting the plurality of LEDs on the substrate. And a first connector having a plurality of connection terminals for power connection, which is disposed at a central portion in the longitudinal direction on the lower surface side of the substrate and is electrically connected to the LED circuit, The plurality of connection terminals are arranged so that the polarity relationship of the drive voltage assigned to each of the connection terminals is point-symmetric with respect to the longitudinal center of the LED lighting unit, and the plurality of LEDs are arranged on the substrate. A part of the pattern wiring of the LED circuit extends in a line from the central portion in the longitudinal direction of the substrate toward both ends of the substrate and is adjacent to the LED circuit. An LED lighting unit connection connector that is formed so as to continuously cover the upper surface of the substrate between the LEDs, and can be fitted to the connector of the LED lighting unit, and protrudes from the LED lighting unit toward the bottom surface It has a latch part which can lock and detach the part freely.

  As the latch portion, it is possible to provide a step portion on the side surface portion that can freely engage and disengage the claw portion. By providing a pair of spring portions extending to both sides along the longitudinal direction of the LED lighting unit at both ends, the pair of spring portions are in the state of being fitted to the connector of the LED lighting unit. It is desirable to abut against the bottom surface of the plate.

  According to the LED lighting unit of the present invention, the line-shaped LED lighting unit can be incorporated into the LED lighting device without discernment (consciousness) of the left and right sides. That is, it is not necessary to recognize the connection direction of the lighting unit and incorporate it into the LED lighting device, so that the mounting workability is improved. Therefore, the erroneous insertion of the connector does not occur, and the LED illumination unit can be easily attached and detached. Moreover, since the pattern wiring formed on the LED array line reflects the LED light, it can be brought close to line-like light emission, and the occurrence of light emission unevenness in the longitudinal direction of the substrate can be suppressed.

  It is preferable that the pattern wiring covers 40% or more of the upper surface of the substrate. Thereby, the illumination unit can be brought closer to the line-like light emission. The pattern wiring desirably has irregularities on the surface. Thereby, since the LED light can be diffused, the LED illumination unit can be brought closer to the line-like light emission. The pattern wiring desirably has a width equal to or greater than the width of the LED in the short direction of the substrate. Thereby, the LED illumination unit can be brought closer to the line-like light emission.

  According to the LED lighting device of the present invention, it is possible to incorporate the linear LED lighting unit into the LED lighting device without identifying (considering) the left and right of the line-shaped LED lighting unit. That is, it is not necessary to recognize the connection direction of the lighting unit and incorporate it into the LED lighting device, so that the mounting workability is improved. Therefore, the erroneous insertion of the connector does not occur, and the LED illumination unit can be easily attached and detached. It is desirable that part of the pattern wiring of the LED circuit extends in a line shape from both sides of the connector toward both ends in the longitudinal direction of the LED mounting substrate, and continuously covers the upper surface of the substrate between adjacent LEDs. . Thereby, since the pattern wiring formed on the LED array line reflects the LED light, it can be brought close to line-like light emission, and the occurrence of light emission unevenness in the longitudinal direction of the substrate can be suppressed.

  Further, the cover has a cover disposed on the upper surface side of the substrate so as to cover the plurality of LEDs, and the cover has a claw portion that can be locked and detached from the second connector. It is desirable to have a pair of spring portions extending in the direction, and the pair of spring portions abut against and press against the lower surface of the LED lighting unit. Thereby, even if it attaches an LED illumination unit in any direction on either side, it can support stably.

  In addition, if the DC power supply has a constant current operation function but does not have a constant current operation function on the LED lighting unit side, the LED mounting area of the lighting unit can be secured widely, and a plurality of LEDs can be arranged at an equal pitch. Can be mounted, and optically uniform illumination can be created. On the other hand, when the LED lighting unit side is provided with a constant current operation function but the DC power source is not provided with a constant current operation function, a generally inexpensive and general-purpose switching power supply is used as the DC power supply. be able to.

  Further, it is desirable that the DC power source can perform a constant current operation with an arbitrary voltage of DC24V to 48V. Thereby, even when the number of LEDs in series in the LED lighting unit is changed, a constant current can be passed, so that safety and stability can be ensured. In addition, it is desirable that the output current value can be set to the DC power source with a switch or the like.

  According to the LED lighting unit connection connector of the present invention, the LED circuit can be driven even if the LED lighting unit is connected in the left or right direction, so that the workability of mounting the LED lighting unit is improved. Further, the LED lighting unit connection connector has a pair of spring portions extending to both sides along the longitudinal direction of the substrate at both ends, and the pair of spring portions in the mating state with the LED lighting unit connection connector. Since it touches and presses the back surface of an LED lighting unit, the function which prevents fall of an LED lighting unit can be given.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this description, common parts are denoted by common reference numerals throughout the drawings.

<First Embodiment>
FIG. 1 is a perspective view showing a configuration of a partially cut-out state of a first embodiment of an LED lighting unit and an LED lighting device using the same according to the present invention. FIG. 2 is an exploded perspective view showing a configuration in which one LED lighting unit in FIG. 1 is taken out and partially cut away. FIG. 3 is a cross-sectional view showing a vertical cross-sectional structure of the LED illumination unit side connector and the power supply side connector in FIG. FIG. 4 is a perspective view showing an example of a coupling structure of the LED lighting unit side connector and the power source side connector in FIG. 1. FIG. 5 is a perspective view showing an example of the appearance of the first embodiment of the present invention. FIG. 6 is an equivalent circuit diagram illustrating an example of a connection relationship between the LED circuit and the LED illumination unit side connector in FIG. 2.

  The LED lighting device of the present embodiment supplies a plurality of LED lighting units 10 having LED circuits, a support (housing) 20 that supports the LED lighting units, and LED driving current to the LED circuits of the LED lighting units. DC power supply 30. The DC power source 30 may be an AC-DC power source that generates a DC voltage from a commercial AC power source. The housing 20 includes a second connector (power-side connector) 31 for supplying a DC voltage / current to the LED lighting unit 10 and a power storage unit 32 for storing the AC-DC power supply 30.

  Hereinafter, the configuration of each unit will be described.

  (LED lighting unit) The LED lighting unit 10 includes a substrate 11 for LED mounting, a plurality of LEDs 12 arranged in a line on the upper surface of the substrate, and a pattern wiring 13 formed on the substrate. An LED circuit in which a plurality of LEDs are electrically (in series) connected by pattern wiring, and a first connector for power connection (LED unit side) disposed at the center in the longitudinal direction on the lower surface (back surface) side of the substrate Connector) 14, a heat radiating plate 15 that is attached to the lower surface (back surface) side of the substrate, avoiding this LED unit side connector, and the upper surface of the substrate so as to cover the LEDs so that the LEDs are not touched directly And a translucent cover 16 disposed on the side.

  (AC-DC power supply) The AC-DC power supply 30 outputs DC 48 V or less in order to commercialize the product as a low-volt standard product with loose legal regulations. From the viewpoint of power supply efficiency, it is desirable to output a high voltage (around 48V). In this case, it is desirable to use one AC-DC power supply having a plurality of LED drive current supply terminals independent from each other, and supply the LED drive current from the AC-DC power supply to the LED circuits of the plurality of LED lighting units 10 respectively. .

  When the AC-DC power supply 30 is provided with a constant current operation function, the LED illumination unit side need not have a constant current operation function. In this case, a wide LED mounting area of the LED lighting unit can be secured, a plurality of LEDs can be mounted at an equal pitch, and optically uniform illumination can be created. Moreover, it is desirable that the LED lighting unit can perform a constant current operation at an arbitrary voltage of DC24V to 48V. Thereby, even when the number of LEDs in series in the LED lighting unit is changed, a constant current can be passed, so that safety and stability can be ensured. In addition, it is desirable that the output current value can be set to the AC-DC power supply with a switch or the like.

  On the other hand, when the LED lighting unit side is provided with a constant current operation function, the AC-DC power supply need not have a constant current operation function. In this case, a generally inexpensive and general-purpose switching power supply can be used as the AC-DC power supply.

  (Housing) The housing 20 is made of metal such as sheet metal or aluminum, and is molded through processes such as bending and pressing. Further, the housing has a structure for attaching the entire lighting device to a wall or ceiling, a structure for fixing an AC-DC power supply, and a structure for fixing a power supply side connector. The housing also stores a power cable (not shown) for connecting the AC-DC power supply and the commercial power supply, and a cable harness (not shown) for connecting the AC-DC power supply and the power supply side connector. Can do.

  (Substrate for LED Mounting) The substrate 11 for LED mounting is a long printed wiring board for mounting a plurality of LEDs 12 arranged in a line and mounting the LED illumination unit side connector 14. The number of LEDs can be changed according to the amount of luminous flux required for the LED lighting unit. Moreover, the pitch between adjacent LEDs can be freely changed.

  The LED mounting substrate 11 may be equipped with a constant current circuit for driving the LED at a constant current, but it is preferable to have the LED on the power source side. As a result, even when the LED light source unit 10 having a small substrate size, such as 15φ or less, is used as a design specification, a constant current circuit that drives the LED at a constant current is mounted when the amount of luminous flux required for the LED illumination unit is large. Area can be secured.

  (LED Circuit and Pattern Wiring) As shown in FIG. 6, a plurality of LEDs 12 are divided into a first group and a second group, and the LEDs 12 in each group are connected in series by a pattern wiring 13 to form an LED series circuit. Forming. At this time, one end of the LED series circuit in the first group is connected to the first connection pin 141, and one end of the LED series circuit in the second group is connected to the second connection pin 142 and the third connection pin 143. ing. The other end of the LED series circuit in the first group is connected to the other end of the LED series circuit in the second group. As for the arrangement of the connection pins 141, 142, and 143, the second connection pin 142 and the third connection pin 143 are located on both sides of the first connection pin 141 and are arranged in a line as a whole.

  A part of the pattern wiring 13 extends in a line shape from both sides of the LED lighting unit side connector 14 toward both ends in the longitudinal direction of the substrate, and is formed so as to continuously cover the upper surface of the substrate between adjacent LEDs. Has been. Each LED uses a surface-mount type LED chip in which a pair of connection terminals are located on both sides, and the pair of connection terminals are connected to pattern wirings on both sides of the LED by, for example, soldering.

  The pattern wiring 13 desirably covers 40% or more of the upper surface of the substrate, and more desirably covers 80% or more. As a result, the illumination unit can be brought closer to the line-like light emission and can have excellent heat dissipation. The pattern wiring desirably has fine irregularities on the surface. Thereby, since the LED light can be diffused, the LED illumination unit can be brought closer to the line-like light emission. The pattern wiring desirably has a width equal to or greater than the width of the LED in the short direction of the substrate. Thereby, the LED illumination unit can be brought closer to the line-like light emission.

  (LED lighting unit side connector) The LED lighting unit side connector 14 is arranged in the center of the LED lighting unit 10. This is for maintaining the symmetry of the position so that the LED lighting unit can be mounted even in the state where the LED lighting unit is reversed horizontally.

  The LED lighting unit side connector 14 has a plurality of connection terminals (in this example, three connection pins 141, 142, 143) in a pin arrangement that matches the power supply side connector 31, and one end of each connection pin is formed on the substrate. It penetrates from the back side to the top side and is connected to the LED circuit via the pattern wiring 13. For example, as shown in FIG. 6, these three connection pins 141, 142, and 143 are symmetrical with respect to the center of the LED illumination unit in the longitudinal direction of the LED circuit supply voltage assigned to each of them. Are arranged as follows. Accordingly, the LED lighting unit side connector can be connected from the power source side connector 31 for coupling (fitting) to the connector regardless of the left and right orientation of the LED lighting unit side connector 14, that is, the left and right orientation of the LED lighting unit. It is possible to supply an LED drive current to the LED circuit via a pin and drive the LED circuit to light. The LED lighting unit is assembled (attached) to the LED lighting device by coupling the two connectors.

  (Heat radiation plate 15) The heat radiation plate is made of a metal that has good heat radiation properties, such as a sheet metal or an aluminum plate, and can be obtained at low cost, and has a role of radiating heat generated by the LED. When the LED lighting unit has a size of 150 mm or more in the longitudinal direction, the heat radiating plate is formed so that the cross section is L-shaped, thereby maintaining the rigidity of the heat radiating plate. A hole for inserting the LED lighting unit side connector is opened at the center of the heat sink.

  (Cover) The cover 16 is made of, for example, a synthetic resin, and is disposed on the upper surface side of the substrate so as to cover the plurality of LEDs arranged and mounted on the upper surface of the substrate, so that the LEDs cannot be directly touched. To protect. By arranging a diffusing member on the inner surface of the cover 16 or making the inner surface of the cover 16 an appropriate shape, it is possible to have a diffusing effect or a lens effect on the LED light. The cover 16 has a hook structure and can be stored and latched in a latch portion 31 a provided in the socket portion of the power supply side connector 31. Thereby, even if it is used in a state where the LED lighting unit of the LED lighting device faces downward, it has a function of preventing the LED lighting unit from falling. As an example of the hook structure, for example, a claw portion 16a protrudes from the cover 16 to the side of the substrate. Further, when the LED lighting unit is detached from the LED lighting device, the latched state between the hook structure of the cover 16 and the latch portion 31a of the power supply side connector 31 is released. At this time, the claw portion 16a is bent by sandwiching the claw portion 16a of the cover with the finger of the user from both sides, and the latched state can be easily released. The hook structure can be provided as a separate part without being provided in the cover.

  (Power Supply Side Connector) The power supply side connector 31 is fixed to the housing 20, and a power supply cable (not shown) drawn from the AC-DC power supply 30 to a connection pin (not shown) protruding toward the power storage space. (Not shown) are connected. The arrangement of the connection pins of the power supply side connector 31 may be two rows or three rows as well as one row, and they are arranged symmetrically. For example, when arranged in a line, the first connection pin in the column direction is the positive electrode of the DC power supply, the second connection pin is the negative electrode of the DC power supply, and the third connection pin is the positive side of the DC power supply. Like the electrode plus, the arrangement is symmetrical. Alternatively, the first connection pin is a negative side electrode of the DC power supply, the second connection pin is a positive side electrode of the DC power supply, and the third connection pin is a symmetrical arrangement such as the negative side electrode of the DC power supply. To do. The number of connection pins of the power supply side connector 31 may be even or odd.

  On the LED illumination unit side of the power supply side connector 31, a socket portion that can be fitted to the LED illumination unit side connector 14 is disposed. The socket portion is configured to have symmetry so that the LED lighting unit side connector 14 can be fitted to the right and left sides.

  The socket part has a structure for latching a hook part provided in the LED lighting unit. As an example of this structure, the side surface portion has a step portion (latch portion 31a) that can freely engage and disengage the claw portion 16a protruding from the cover 16 of the LED lighting unit to the side of the substrate.

  Further, the socket part has a structure for preventing a drop after the LED lighting unit is attached. As an example of this structure, a pair of spring portions 31b extending to both sides along the substrate longitudinal direction are provided at both ends. Thus, in a state where the LED illumination unit connection connector 14 is fitted in the socket portion, the pair of spring portions 31b abut against the heat radiation plate 15 on the back surface side of the substrate of the LED illumination unit and press the cover 16 side.

  (Specific Example 1 of LED Circuit and Pattern Wiring) As shown in FIGS. 7A and 7B, a plurality of LEDs 12 are divided into a first group and a second group, and the LEDs of each group have a polarity orientation. Are arranged in the same direction on the line. The LEDs in each group are connected in series by a line pattern wiring to form an LED series circuit. One end of the LED series circuit in the first group is connected to the first connection pin 141, and one end of the LED series circuit in the second group is connected to the second connection pin 142 and the third connection pin 143. The other end of the LED series circuit in the first group and the other end of the LED series circuit in the second group are connected by two pattern wirings 13a and 13b formed in parallel on both sides along the longitudinal direction on the substrate. Has been. As for the arrangement of the connection pins 141, 142, and 143, the second connection pin 142 and the third connection pin 143 are located on both sides of the first connection pin 141 and are arranged in a line as a whole.

  (Specific Example 2 of LED Circuit and Pattern Wiring) As shown in FIGS. 8A and 8B, the plurality of LEDs 12 are divided into a first group and a second group, and the LEDs in the first group The LEDs in the second group are arranged so that the polarity direction is reverse on the line. And LED of each group is connected in series by the line-shaped pattern wiring, and forms the LED series circuit. One end of the LED series circuit in the first group is connected to the first connection pin 141, and one end of the LED series circuit in the second group is connected to the second connection pin 132 and the third connection pin 143. The other end of the LED series circuit in the first group and the other end of the LED series circuit in the second group are connected by a pattern wiring 13c formed on one side along the longitudinal direction on the substrate. As for the arrangement of the connection pins 141, 142, and 143, the second connection pin 142 and the third connection pin 143 are located on both sides of the first connection pin 141 and are arranged in a line as a whole.

  (Specific Example 3 of LED Circuit and Pattern Wiring) As shown in FIGS. 9A and 9B, a plurality of LEDs 12 are divided into a first group and a second group, and the LEDs of each group have a polarity orientation. Are arranged in the same direction on the line. The LEDs in each group are connected in series by a line-shaped pattern wiring to form an LED series circuit. One end of the LED series circuit in the first group is connected to the first connection pin 141 and the second connection pin 142, and one end of the LED series circuit in the second group is the third connection pin 143 and the fourth connection pin 144. It is connected to the. The other end of the LED series circuit in the first group and the other end of the LED series circuit in the second group are connected by one pattern wiring 13d formed on one side along the longitudinal direction on the substrate. The arrangement of the connection pins 141, 142, 143, and 144 corresponds to each corner of the square in the order of the first connection pin 141, the third connection pin 143, the second connection pin 142, and the fourth connection pin 144. Are arranged.

  (Assembly Method of LED Lighting Unit) The LED 12 and the LED lighting unit side connector 14 are mounted on the substrate 11 on which the pattern wiring 13 is formed in advance, and the substrate 11 is attached to the heat radiating plate 15 with a double-sided adhesive tape or an adhesive (not shown). Glue. Thereafter, the cover 16 is attached.

  (Manufacturing Method on the Case 20 Side) The AC-DC power supply 30 is mounted on the power storage unit 32 of the case 20 with screws or the like (not shown). Further, a power supply side connector 31 is attached, and a power supply line from a commercial power supply is attached to the AC-DC power supply 30 by soldering or a crimp terminal. Note that the mounting pitch of the power supply side connector 31 is larger than the length of the LED lighting unit 10 in the longitudinal direction. The pins of the power supply side connector 31 and the AC-DC power supply 30 are connected to the pins by soldering, crimping terminals or the like (not shown).

  As described above, according to the LED lighting unit 10 and the LED lighting device of the present embodiment, when the LED lighting unit 10 is assembled, the left and right sides of the LED lighting unit 10 can be incorporated without being recognized (conscious). Workability is improved. Therefore, erroneous insertion of the LED illumination unit side connector 14 does not occur, and the LED illumination unit 10 can be easily attached and detached. Moreover, since the pattern wiring 13 formed on the array line of the plurality of LEDs reflects the LED light, the pattern wiring 13 can be brought close to the line-like light emission, and the substrate can be mounted even if the LED illumination unit 10 is mounted in either the right or left direction. The occurrence of uneven light emission in the longitudinal direction can be suppressed. Moreover, since it is not necessary to connect from the AC-DC power supply 30 to the LED lighting unit 10 with a cable harness, it becomes difficult to receive design restrictions.

  (Example 1) In Example 1, only one LED lighting unit having a length of 30 cm in the longitudinal direction was attached to a support, and an LED lighting device having a light source portion having a length of about 30 cm was realized. In this case, by using twelve 1W class power LEDs, it was possible to obtain a luminous flux of about 500 lm in a lighted state.

  (Example 2) In the LED lighting device of Example 2, four LED lighting units each having a longitudinal length of 30 cm are attached to a support body in a linear arrangement (see FIG. 1), and the length of the light source portion. Realized an LED lighting device of about 1.2 m. In this case, by using twelve 1W class power LEDs for each LED lighting unit, a luminous flux of about 2000 lm can be obtained in a lighted state. This can obtain an illuminance equivalent to that of a fluorescent lamp equivalent to 40 W or a T5 tube, and can be used as an alternative.

  (Example 3) It is also possible to arrange LED lighting units having a length in the longitudinal direction of 30 cm in a plurality of rows. For example, four LED lighting units can be attached to a support in parallel arrangement to obtain the same illuminance as a fluorescent lamp or a T5 tube, and can be used as an alternative.

  The present invention is not limited to the above-described embodiments and examples, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. It goes without saying that it is a thing. For example, in each of the above-described embodiments and examples, the LED is not limited to a white type, and LEDs having various emission colors can be used and applied to an illumination device for illumination. Further, when the LED lighting unit is mounted on, for example, a car and DC 24V or the like can be directly supplied from a battery or the like, storing the DC power source in the LED lighting unit can be omitted.

  The present invention can be used as, for example, an illumination lamp for replacing a fluorescent lamp.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the structure of the state partly notched about 1st Embodiment of the LED lighting unit which concerns on this invention, and the LED lighting apparatus using the same. The disassembled perspective view which shows the structure of the state which took out one LED lighting unit in FIG. Sectional drawing which takes out the part of the LED illumination unit side connector in FIG. 1, and the power supply side connector, and shows a longitudinal cross-section structure. The perspective view which shows an example of the coupling structure of the LED illumination unit side connector and power supply side connector in FIG. The perspective view which shows an example of an external appearance about the 1st Embodiment of this invention. The equivalent circuit diagram which shows an example of the connection relation with the LED circuit in FIG. 2, and a LED illumination unit side connector. The equivalent circuit schematic and top view which show the specific example 1 of the LED circuit and pattern wiring in the 1st Embodiment of this invention. The equivalent circuit schematic and top view which show the specific example 2 of the LED circuit and pattern wiring in the 1st Embodiment of this invention. The equivalent circuit schematic and top view which show the specific example 3 of the LED circuit and pattern wiring in the 1st Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... LED illumination unit, 11 ... Board | substrate for LED mounting, 12 ... LED, 13 ... Pattern wiring, 14 ... 1st connector (LED unit side connector), 15 ... Heat sink, 16 ... Cover, 20 ... Support body ( (Casing), 30 ... DC power source, 31 ... second connector (power-side connector), 32 ... power storage unit.

Claims (17)

An LED mounting substrate; a plurality of LEDs mounted on the upper surface of the substrate; a pattern wiring that electrically connects the plurality of LEDs on the substrate to form an LED circuit; and a lower surface side of the substrate An LED lighting unit comprising a first connector for connecting a power source, which is disposed in a central portion in the longitudinal direction and electrically connected to the LED circuit,
The first connector has a plurality of connection terminals, and the plurality of connection terminals are symmetrical with respect to the longitudinal direction center of the LED lighting unit with respect to the polarity relationship of the drive voltage assigned to each of the plurality of connection terminals. Are arranged so that
The plurality of LEDs are arranged and mounted in a line on the upper surface of the substrate, and a part of the pattern wiring of the LED circuit is formed in a line from the longitudinal center of the substrate toward both ends of the substrate. And is formed so as to continuously cover the upper surface of the substrate between adjacent LEDs,
The LED illumination unit, wherein the LED circuit can be driven to light regardless of the left and right orientations of the LED illumination unit. The LED illumination unit according to claim 1, wherein the pattern wiring covers 40% or more of the upper surface of the substrate. The LED lighting unit according to claim 1, wherein the pattern wiring has an uneven surface. 2. The LED lighting unit according to claim 1, wherein the pattern wiring has a width equal to or larger than a width of the LED in a short direction of the substrate. The LED illumination unit according to claim 1, further comprising a cover disposed on an upper surface side of the substrate so as to cover the plurality of LEDs. 6. The LED lighting unit according to claim 5 , wherein the cover has a claw portion that can be locked and detached from a second connector fitted to the first connector. 6. The LED lighting unit according to claim 5, wherein a maximum width of the cover is 15 mmφ or less. The LED lighting unit according to claim 1, wherein the circuit formed on the upper surface of the LED mounting substrate does not include a constant current circuit. The plurality of LEDs are divided into a first group and a second group, and the LEDs in each group are connected in series to form an LED series circuit, and one end of the LED series circuit in the first group. Is connected to the first connection terminal of the first connector, one end of the LED series circuit in the second group is connected to the second connection terminal and the third connection terminal of the first connector, The other end of the LED series circuit in the first group is connected to the other end of the LED series circuit in the second group, and the second connection terminal and the third connection terminal are both sides of the first connection terminal. The LED lighting unit according to claim 1, wherein the connection terminals are arranged in a line as a whole. The plurality of LEDs are divided into a first group and a second group, and the LEDs in each group are connected in series to form an LED series circuit, and one end of the LED series circuit in the first group Is connected to the first connection terminal and the second connection terminal of the first connector, and one end of the LED series circuit in the second group is connected to the third connection terminal and the fourth connection terminal of the first connector. The other end of the LED series circuit in the first group and the other end of the LED series circuit in the second group are connected, the four connection terminals are the first connection terminal, The LED lighting unit according to claim 1, wherein the LED lighting unit is arranged corresponding to each corner of the square in the order of the third connection terminal, the second connection terminal, and the fourth connection terminal. An LED lighting device comprising a single or a plurality of LED lighting units each having an LED circuit, and a support that supports the LED lighting units,
The LED lighting unit has a first LED mounting board, an LED circuit mounted on the upper surface of the board, and a plurality of connection terminals for power supply arranged at a central portion in the longitudinal direction of the board. A plurality of connection terminals , and the plurality of connection terminals are arranged so that a polarity relationship of drive voltages assigned to each of the connection terminals is point-symmetric with respect to a longitudinal center of the LED lighting unit. The LEDs are arranged and mounted in a line on the upper surface of the substrate, and part of the pattern wiring of the LED circuit extends in a line from the longitudinal center of the substrate toward both ends of the substrate. It is formed so as to cover continuously the top surface of the substrate between the LED adjacent the LED lighting unit, supported by the support regardless of the left and right direction of the first connector LED illumination device state by said LED circuit is characterized in that it is driven lighted. The LED lighting device according to claim 11 , wherein the support includes a second connector that can be connected regardless of a left-right direction of the first connector. Said second connector has a pair of spring portion extending in the longitudinal direction of the substrate, wherein the said pair of spring portions, characterized in that the pressing in contact with the lower surface of the LED lighting unit Item 13. An LED illumination device according to Item 12 . The LED lighting device according to claim 11 , wherein the support further includes a power storage unit storing a DC power source for supplying an LED driving current to the LED circuit. An LED mounting substrate; a plurality of LEDs mounted on the upper surface of the substrate; a pattern wiring that electrically connects the plurality of LEDs on the substrate to form an LED circuit; and a lower surface side of the substrate A first connector having a plurality of connection terminals for connecting to a power supply, which is disposed in the central portion in the longitudinal direction and electrically connected to the LED circuit, and that can be fitted to the connector of the LED lighting unit. A unit connection connector,
The plurality of connection terminals are arranged so that the polarity relationship of the drive voltage assigned corresponding to each of them is point-symmetric with respect to the longitudinal center of the LED lighting unit,
The plurality of LEDs are arranged and mounted in a line on the upper surface of the substrate, and a part of the pattern wiring of the LED circuit is formed in a line from the longitudinal center of the substrate toward both ends of the substrate. And is formed so as to continuously cover the upper surface of the substrate between adjacent LEDs,
A connector for connecting an LED illumination unit, comprising: a latch portion that can freely engage and disengage a claw projecting from the LED illumination unit toward the bottom surface. 2. The LED lighting unit connection connector according to claim 1 , wherein a stepped portion capable of locking and releasing the claw portion is provided on a side surface portion as the latch portion. The LED lighting unit has a pair of spring portions extending at both ends along the longitudinal direction of the LED lighting unit, and the pair of spring portions are in the LED lighting unit in a fitted state with a connector of the LED lighting unit. The LED lighting unit connection connector according to claim 1 , wherein the LED lighting unit connection connector is pressed against the bottom surface of the unit.

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