JP2007048666A - Light source device, and illumination fixture using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device capable of carrying out changes of a pitch between light source parts and arranging the light sources in a mutually adhered state, and an illumination fixture using it. <P>SOLUTION: The illumination fixture is provided with the light source device L and a power supply device to supply an operation power supply to this light source device L, the light source device L is provided with six light source parts 1A to 1F which are individually provided with light emitting diodes 4A to 4F, and a mounting tool 2 to removably mount these light source parts 1A to 1F in a row state with right and left directions as an arrangement direction in a state that the respective irradiation direction is turned toward the front direction. The light source parts 1A to 1F mutually adjacent in the arrangement direction are electrically connected by using connecting wires 3B to 3F routed from sites which are not mutually opposed, and the light source part 1A and the light source part 1F are respectively connected to the power supply device by using the connecting wires 3A, 3G. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a light source device and a lighting fixture using the same.

  2. Description of the Related Art Conventionally, there has been provided a lighting fixture that uses a printed circuit board on which a light emitting diode having a small size and a long life is mounted as a light source device. Examples of such lighting fixtures include ceiling lights, floor lamps, wall surfaces, staircases, handrails attached to handrails, illuminated products for display at stores, and internally illuminated box letter signs. There is a line-type lighting fixture used for such as (for example, Patent Document 1).

A line-type lighting fixture such as Patent Document 1 includes a light source device that is a linear light source by mounting a plurality of light emitting diodes on a long printed circuit board, and an AC voltage from an AC power source such as a commercial power source. A power supply device is provided for supplying a predetermined DC voltage to the light source device by rectification and smoothing including a step-down.
Japanese Patent Laying-Open No. 2005-19299 (FIGS. 1 and 2)

  By the way, the light source device as described above has a plurality of light emitting diodes mounted on a single printed circuit board by soldering or the like. The pitch cannot be changed, and a desired light distribution may not be obtained depending on the installation location of the light source device.

  Thus, as a result of considering the above problems, the present inventor uses a light source unit in which light emitting diodes are mounted on a printed circuit board one by one, and a fixture for detachably attaching these light source units, thereby emitting light. The inventors have conceived a light source device capable of changing the pitch between the diodes by changing the pitch between the light source sections.

  However, in this light source device, the connection line for the feed wiring between the light source parts (that is, the connection line for connecting the light emitting diodes mounted on each printed circuit board) becomes an obstacle when changing the pitch between the light source parts. Therefore, the light source units cannot be arranged in a state where they are in close contact with each other (hereinafter referred to as a minimum pitch).

  The present invention has been made in view of the above points, and an object of the present invention is to provide a light source device that can change the pitch between the light source units and can arrange the light source units in close contact with each other. Is to provide lighting fixtures.

  In order to solve the above-described problem, in the invention of the light source device according to claim 1, the light source unit and the plurality of light source units are detachably attached in a row in a predetermined direction with each irradiation direction directed in the same direction. The light source parts which are equipped with a fixture and are adjacent to each other in the predetermined direction are electrically connected to each other using a feeding wire led out from a portion not facing each other.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the feeding wire is a curled cord.

  In the invention of the light source device according to claim 3, in addition to the configuration of claim 1 or 2, the fixture has a placement surface on which a plurality of light source portions are placed, and faces the placement surface of the fixture. The light source portion is provided with a holding portion for holding a power supply line from a power supply device that supplies operating power to the light source portion.

  According to a fourth aspect of the present invention, there is provided the light source device according to any one of the first to third aspects.

  The present invention includes a fixture for detachably attaching a plurality of light source units in a predetermined direction in a state in which the respective irradiation directions are directed in the same direction, so that the pitch between the light source units can be changed. In addition, since the light source parts adjacent in the predetermined direction are electrically connected using the feed wirings derived from the portions not facing each other, the feed wiring is connected to the light source part when the light source part is attached to the fixture. There is an effect that it becomes possible to attach to the fixture in a state where the light source portions are in close contact with each other.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description of the embodiment, the front side of the sheet of FIG. 1 is the front of the light source device L, the back of the page of FIG. 1 is the rear of the light source device L, and the right side of FIG. 1 is the left side of the light source device L.

  The lighting fixture of this embodiment is a lighting fixture for internal lighting used for, for example, an internally illuminated signboard, particularly an internally illuminated box character signboard, and a light source using light emitting diodes 4A to 4F as a light source as shown in FIG. The apparatus L is composed of a power supply device (not shown) that supplies operating power to the light source device L. The power supply device (not shown) is for uniformly lighting the light emitting diodes 4A to 4F of the light source device L. For example, the AC voltage from an AC power supply such as a commercial power supply is rectified and smoothed including a step-up / step-down voltage. An AC-DC converter that converts the voltage into a predetermined DC voltage, a constant current circuit that supplies a predetermined constant current to the light emitting diodes 4A to 4F of the light source device L based on the DC voltage of the AC-DC converter, and the like. . About such a power supply device, since a conventionally well-known thing can be used, description is abbreviate | omitted.

  As shown in FIG. 1, the light source device L has the light source units 1A to 1F individually having the light emitting diodes 4A to 4F and the plurality of light source units 1A to 1F in the same direction (forward direction). The fixtures 2 are attached in a row with the left-right direction as the arrangement direction in the state, and the light source portions 1A-1F adjacent in the arrangement direction (left-right direction) connect the connection lines 3B-3F derived from the portions not facing each other. The light source unit 1A that is electrically connected and the light source unit 1F that is the start end and the light source unit 1F that is the end are respectively connected to a high voltage side terminal and a low voltage side terminal of a power supply device (not shown) using connection lines 3A and 3G. It is connected. That is, the connection lines 3A and 3G are used as power supply lines for supplying operating power from the power supply device to the light source units 1A to 1F, and the connection lines 3B to 3F are used as feed wires for feeding and wiring between the light source units. It is used. In addition, in FIG.2 (d) and FIG.3 (d), the connection lines 3A-3G are abbreviate | omitted.

  First, the light source units 1A to 1F will be described. These light source units 1A to 1F are so-called LED modules formed by sealing the light emitting diodes 4A to 4F with a resin material or the like. The light emitting diodes 4A to 4F of the light source units 1A to 1F have connection lines 3A to 3G. It is electrically connected as follows. That is, as shown in FIG. 1, the cathode terminal (not shown) of the light emitting diode 4A and the anode terminal (not shown) of the light emitting diode 4B are electrically connected by the connection line 3B. The cathode terminal of 4B and the anode terminal of the light emitting diode 4C are connected by the connecting line 3C, and the cathode terminal of the light emitting diode 4C and the anode terminal of the light emitting diode 4D are connected by the connecting line 3D, and the cathode terminal of the light emitting diode 4D and the anode of the light emitting diode 4E. The terminal is electrically connected by the connection line 3E, and the cathode terminal of the light emitting diode 4E and the anode terminal of the light emitting diode 4F are electrically connected by the connection line 3F. Furthermore, one end side of the connection line 3A is connected to the anode terminal of the light emitting diode 4A, and one end side of the connection line 3G is connected to the cathode terminal of the light emitting diode 4F. As a result, as shown in FIG. 1, a series circuit of light emitting diodes 4A to 4F having a light emitting diode 4A as a starting end and a light emitting diode 4F as a terminal is formed.

  Since all of the light source units 1A to 1F connected in a straight line by the connection lines 3A to 3G have the same configuration, the light source unit 1A will be described below as an example. 1A to 1F will be described.

  As shown in FIGS. 3A to 3D, the light source unit 1 </ b> A is mounted as a wiring board 10 provided with a wiring pattern (not shown) for electronic components on the front side, and the wiring board 10 as an electronic component. A light emitting diode 4A, connection lines 3A and 3B electrically connected to an anode terminal and a cathode terminal of the light emitting diode 4A through a wiring pattern (not shown) of the wiring board 10, respectively, and a transparent diode for protecting the light emitting diode. The optical cover 11 is composed of a mold body 12 having a circular window hole 13a for sealing the wiring substrate 10 and the cover 11 and irradiating the light of the light emitting diode 4A to the outside. From the mold body 12, it is derived | led-out in the direction (left-right direction in Fig.3 (a)) orthogonal to the arrangement direction (up-down direction in Fig.3 (a)) of light source part 1A-1B.

  The wiring board 10 is a rectangular plate-shaped single-sided mounting board as shown in FIG. 3A, for example, and the anode and cathode terminals of the light emitting diode 4A and the connection lines 3A and 3B are electrically connected to the front side. A wiring pattern (not shown) for connection and a solder resist (not shown) that exposes only the soldering portion of the wiring pattern to prevent the solder from adhering to other than the soldering portion are formed. .

  The light-emitting diode 4A is, for example, a surface-mount type high-intensity white light-emitting diode, and the front surface is provided with an emission surface having an emission port 40, and the back surface is mounted with an anode terminal (not shown) and a cathode terminal (not shown) exposed. It is a surface. The light color of the light emitting diode is not limited to white, but may be red, purple, blue, green, yellow, orange, or the like. Further, a Zener diode or the like may be connected in parallel in the reverse direction to the light emitting diode 4A to protect the light emitting diode from a reverse voltage or a high voltage.

  The cover 11 is used to protect the emission surface of the light emitting diode 4A so as not to become dirty or damaged. For example, the cover 11 is made of a light-transmitting material such as acrylic resin and has substantially the same shape as the wiring substrate 10. It is formed to become.

  As shown in FIG. 3A, the mold body 12 is formed using a resin material having elasticity such as rubber, for example, and a main body portion 13 that entirely covers the wiring substrate 10 and the cover 11, and the main body portion 13. Are integrally provided with substantially cylindrical bush portions 14 and 14 for protecting the connecting wires 3A and 3B derived from.

  The main body portion 13 is formed in a substantially rectangular parallelepiped shape with a substantially square rear surface, and a substantially circular window hole 13a for irradiating the light of the light emitting diode 4A to the outside is formed in the center portion of the front surface. . Then, the connection lines 3A and 3B connected to the wiring board 10 are coaxially positioned from both side surfaces (left and right side surfaces in FIG. 3A) in a direction orthogonal to the arrangement direction in the main body portion 13. Has been derived to be.

  On the other hand, as shown in FIGS. 3B to 3D, a holding portion 15 for holding connection wires 3A and 3G mainly used for connection with the power supply device is provided on the rear surface portion of the main body portion 13. It has been. The holding portion 15 is formed in a groove shape having both ends opened, and has a wide width portion 15a having substantially the same width as the outer diameter of the connection lines 3A and 3G, and the connection lines 3A and 3G are fitted into the wide width portion 15a. And a narrow width portion 15b. Here, the width dimension of the narrow width portion 15b is slightly smaller than the outer diameter of the connection lines 3A and 3G, so that when the connection lines 3A and 3G are arranged in the wide width portion 15a, the connection line 3A. , 3G is prevented by the narrow portion 15b so that the connection lines 3A, 3G are not easily detached from the holding portion 15. Note that the connection lines held by the holding unit 15 are not limited to the connection lines 3A and 3G, and of course, the connection lines 3B to 3F may be held by the holding unit 15.

  The bush portion 14 protrudes from the side surface of the main body portion 13 so as to surround and protect the connection wires 3A and 3B led out from the main body portion 13 as described above, and a base portion 14a of the bush portion 14 is provided. It is used for attaching the light sources 1A to 1F to the fixture 2.

  The light source units 1A to 1F are configured by the above members, and a method for manufacturing these light source units 1A to 1F will be described below. First, the light emitting diodes 4A to 4F are surface-mounted by reflow soldering or the like on the wiring boards 10 of the light source units 1A to 1F, respectively. Then, the connection lines 3A to 3G are soldered to a wiring pattern (not shown) of the wiring board 10 of each light source unit 1A to 1F, and the light emitting diodes 4A to 4F are connected in series as described above. After the light emitting diodes and the connection lines are soldered to the wiring boards 10 of the light source units 1A to 1F in this way, the cover 11 is placed in front of the wiring board 10 so as to cover the emission surfaces of the light emitting diodes 4A to 4F. Deploy. In this state, the wiring board 10 and the cover 11 are individually placed in a mold for molding the mold body 12, and the mold body 12 is insert-molded to be linearly connected as shown in FIG. The light source portions 1A to 1F are obtained.

  Next, the fixture 2 for attaching the light source units 1A to 1F will be described. The fixture 2 is for detachably attaching the light source portions 1A to 1F in a predetermined arrangement direction in a desired pitch at a desired pitch. For example, a metal plate made of a material resistant to rust or impact such as stainless steel is substantially coated. It is formed by bending in a letter shape. More specifically, as shown in FIG. 2A, the fixture 2 includes a long rectangular plate-like bottom plate portion 20 having a placement surface on which the light source portions 1 </ b> A to 1 </ b> F are placed, and a bottom plate portion. 20 are integrally provided with side plate portions 21 and 21 that are vertically suspended at both ends in the short direction, and the outer shape of the bottom plate portion 20 is as shown in FIGS. 1 and 2C. The main body 13 of the mold body 12 is formed in such a size that eight pieces can be attached in the longitudinal direction.

  Moreover, as shown in FIG.2 (b), 15 notches 5A-5O for light source part attachment to the pair of side plate parts 21 of the fixture 2 are orthogonal to the arrangement direction of the light source parts (that is, in other words, Are opposed to each other in the longitudinal direction of the fixture 2 and are formed at equal intervals in the longitudinal direction of the side plate portion 21 (approximately half the length in the arrangement direction of the main body portions 13). The positions where the parts 1A to 1F are attached to the fixture 2 and the pitch between the light source parts can be freely set. The notches 5A to 5O are formed by fitting the circular fitting hole 5a having an inner diameter substantially the same as the outer diameter of the base portion 14a of the bush portion 14 and the base portion 14a of the bush portion 14 from the front of the side plate portion 21 into the fitting hole 5a. And a communication hole 5b for fitting with the communication hole 5b. The width dimension (the length dimension in the left-right direction) of the front end side of the communication hole 5b is set so that the base part 14a can be easily fitted into the notches 5A to 5O as shown in FIG. It is formed wider than. In addition, the width dimension (length dimension in the left-right direction) of the communication portion of the communication hole 5b with the fitting hole 5a is set slightly smaller than the outer diameter of the base portion 14a, thereby preventing the base portion 14a from coming off. ing.

  The light source device L includes the light source units 1A to 1F and the fixture 2, and the light source units 1A to 1F are attached to the fixture 2 as follows. That is, as shown in FIGS. 2C and 2D, the light source portions 1A to 1F are attached to the fixture 2 with the irradiation direction directed forward (that is, the window hole 13a of the mold body 12 forwarded). The base portions 14a and 14a of the pair of bush portions 14 and 14 of the mold body 12 are notched 5A to 5O and 5A to the opposite side plate portions 21 and 21 of the fixture 2 in a state facing each other. For example, as shown in FIG. 1, the light source unit 1A is inserted into the cutouts 5A and 5A, and the light source unit 1B is inserted into the cutouts 5C and 5C. The light source unit 1C is held in the cutouts 5E and 5E, the light source unit 1D is held in the cutouts 5G and 5G, the light source unit 1E is held in the cutouts 5K and 5K, and the light source unit 1F is held in the cutouts 5O and 5O. It can be attached to the fixture 2.

  Thus, when attaching light source part 1A-1F to the fixture 2, the width dimension of the communication site | part with the fitting hole 5a of the communication hole 5b is set a little smaller than the outer diameter of the base 14a. Thus, the light source portions 1A to 1F are prevented from coming off so as not to be easily detached from the fixture 2. On the other hand, as shown in FIGS. 3A to 3D, the mold bodies 12 of the light source units 1 </ b> A to 1 </ b> F have a line-symmetric shape with an axis passing through the center of the mold body 12 in the arrangement direction as an axis of symmetry. Therefore, when attaching the light source parts 1A to 1F to the fixture 2, there are two attachment directions, but it is preferable to attach the connection lines 3B to 3F so as not to straddle the fixture 2.

  According to the light source device L of the present embodiment described above, the light source unit 1A to 1F is provided with the fixture 2 that detachably attaches in rows in the arrangement direction with the respective irradiation directions directed in the forward direction. In addition to the advantage that the pitch between the parts can be changed, the adjacent light source parts 1A to 1F in the arrangement direction are connected to each other by connecting lines 3B to 3F derived from parts orthogonal to the arrangement direction, that is, parts that do not face each other. When connecting the light sources 1A to 1F to the fixture 2 in the arrangement direction, the connection lines 3B to 3F do not interfere with the mounting of the light sources 1A to 1F. There exists an advantage that it becomes possible to attach the light source parts 1A-1F to the fixture 2 with the minimum pitch.

  In addition, the attachment position to the fixture 2 of the light source parts 1A-1F shown in FIG. 1 is an example to the last, and the light source device L of this invention is not restricted to said example, For example, all the light source parts 1A- 1F may be arranged at a minimum pitch with respect to each other. In addition, the number of light source units of the light source device L is not limited to six, and may be increased or decreased according to the situation to be a suitable number. Furthermore, the fixture 2 is not limited to the above example, and the outer shape may be enlarged so that more light source parts can be attached. The shape is not limited to a linear one, but an arc shape. It may be a bent shape or a bent shape, and may be appropriately selected according to the usage form.

  By the way, the connection line 3A of the light source unit 1A serving as the start end and the connection line 3G of the light source unit 1F serving as the end are respectively connected to a high voltage side terminal and a low voltage side terminal of a power supply device (not shown). It is used as a power supply line for supplying operating power to 1F, but if the power supply device is arranged on the left end side of the fixture 2 in FIG. 1, a long electric wire must be used as the connection line 3G. However, when the connection line 3G is lengthened in this way, the connection line 3G is likely to be lifted.

  Therefore, when the connection line 3G becomes long and may be lifted in this way, the connection line 3G is attached to the holding part 15 provided on the rear surface part of the light source part facing the mounting surface of the fixture 2. It is sufficient to hold at least one place. If it does in this way, it will become possible to suppress floating of connecting line 3G and it can prevent connecting line 3G getting in the way at the time of installation of light source device L. In addition, since the holding portion 15 is provided in the mold body 12, it is not necessary to provide a separate cord keep or the like to prevent the connection line from floating. This is the same for the connection line 3A. Depending on the positional relationship between the power supply device and the fixture 2, either or both of the connection lines 3A and 3G are molded at appropriate locations in the molded body 12 of the light source units 1A to 1F. What is necessary is just to make it hold | maintain at the holding part 15. Note that such a holding portion 15 is not necessarily provided on the rear surface portion of the light source portion. For example, the holding portion 15 may be provided on the front surface portion or the side surface portion of the main body portion 13. By providing the holding portion 15 on the rear surface portion of the facing light source portion, the connection line can be concealed to some extent by the main body portion 13 and the fixture 2 of the light source portion, so that the appearance is improved.

  On the other hand, in the example shown in FIG. 1 above, as the connection wires 3B to 3F serving as the feed wiring, generally used insulation coated electric wires are used, but when using such an insulation coated electric wire, As shown in FIG. 1, when the pitch is increased as in the light source portions 1D and 1E and in the case of the minimum pitch as in the light source portions 1A and 1B, the short direction of the fixture 2 (perpendicular to the arrangement direction). The longer the connection line is made so that the protrusion amount of the connection line in the direction (that is, the width of the connection line from the fixture) changes greatly and the pitch between the light source parts can be increased, the distance between the light source parts When the pitch is set to the minimum pitch, the protruding amount of the connection line increases, and as a result, the light source device L may be increased in size.

  In order not to cause such a problem, as shown in FIG. 4, instead of the connection wires 3B to 3F, connection wires 3B ′ to 3F made of curled cords (also called spring cables) in which electric wires are wound in a coil shape. Use '. That is, since the curl cords can be expanded and contracted with respect to the winding direction, even when the pitch between the light source units is different, such as the light source units 1A and 1B and the light source units 1D and 1E shown in FIG. The protrusion amount of the connection line in the short direction (direction orthogonal to the arrangement direction) of the fixture 2 is not changed. Therefore, even if the connection lines are set long so that the pitch between the light source portions can be increased, the shorter direction of the fixture 2 (the direction orthogonal to the arrangement direction) than the connection lines 3B to 3F as shown in FIG. The amount of protrusion of the connection line to the light source can be suppressed, and thereby the increase in size of the light source device L can be suppressed.

It is a schematic front view of the light source device used for the lighting fixture of this invention. (A) is a side view of the fixture, (b) is the other side view of the fixture partially omitted, and (c) is a side view of a state in which the light source part is attached to the fixture. FIG. 6D is a side view of the other side with the light source unit attached to the fixture, partly omitted. (A) is a schematic front view of a light source part, (b) is a schematic side view of a light source part, (c) is a schematic rear view of a light source part, (d) is a light source part. It is the other schematic side view. It is a schematic front view which shows another example of the light source device used for the lighting fixture of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A-1F Light source part 2 Attachment 3A-3G Connection line 4A-4F Light emitting diode L Light source device

Claims (4)

  A light source unit and a fixture that removably attaches the plurality of light source units in a row in a predetermined direction with the respective irradiation directions directed in the same direction, and the light source units adjacent in the predetermined direction face each other. A light source device characterized in that the light source device is electrically connected using a feeding wire led out from a portion not to be used.   The light source device according to claim 1, wherein the feeding wire is a curled cord.   The fixture has a placement surface on which a plurality of light source portions are placed, and a power line from a power supply device that supplies operating power to the light source portion at a portion of the light source portion facing the placement surface of the fixture. The light source device according to claim 1, wherein a holding portion that holds the light source is provided.   A lighting apparatus comprising the light source device according to claim 1.

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