JP5880137B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device such as a downlight embedded in a ceiling or the like using a high-power light emitting diode (Power LED) as a light source.

  Conventionally, an illumination device such as a downlight has been used in which a substrate on which an LED (light emitting element) is mounted is incorporated in the illumination device (see, for example, Patent Document 1). In such a lighting device, the LED is fixed on the substrate by soldering and supplied with electricity. However, in recent years, the output of LEDs has been increased (higher power), and it is difficult to transfer the heat of LEDs to a heat radiating member (heat sink) even when an Al substrate having excellent heat transfer properties is used as the substrate. It has become to.

  For this reason, recently, COB (Chip On Board) type LEDs capable of directly mounting LEDs on heat radiating members have been used in lighting devices (see, for example, Patent Document 2). Such a COB type LED (hereinafter simply referred to as COB) has a power feeding portion on the front surface to dissipate heat from the back surface. Therefore, in a lighting device using a COB, electricity is supplied by directly soldering a power supply holder or a power supply wiring (hereinafter simply referred to as a wiring) to the front surface of the COB.

JP 2009-64637 A (see FIG. 1) JP 2011-113814 A (see FIG. 1)

  However, in the lighting device using the COB as described above, when mounting a plurality of COBs, a power supply holder is attached to each COB, wiring is connected to each power supply holder, or wiring is directly soldered to the COB. It was difficult to connect. Specifically, since the downlight generally has 5 to 20 COBs in a limited area (φ75 to 250 mm), the interval between adjacent COBs is narrowed. Therefore, it is difficult to attach a power supply holder for each COB or to secure a space for soldering the wiring directly to the COB.

  In addition, there are a large number of lighting devices using COB as described above even in a small space even when wiring can be connected to the COB via a power supply holder or directly when a plurality of COBs are mounted. Therefore, for example, work such as replacement of COB becomes very complicated.

  The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a lighting device that can easily mount a plurality of COBs and can easily perform operations such as replacement of COBs. To do.

  In order to solve the above problems, an illumination device according to the present invention includes a plurality of light emitting devices each including a substrate and a light emitting unit disposed on the substrate, and is disposed above the plurality of light emitting devices. A circuit board for supplying current to the plurality of light emitting devices, and a circuit board for supplying current to the light emitting devices. A lighting device comprising a plurality of cylindrical lens holders arranged in a number equal to the number of the light emitting devices, and a lens accommodated in a cylinder of the lens holder, wherein the lens holder is a lower end of the cylinder A plurality of claw portions protruding from the circuit board, the claw portions are inserted into the insertion hole from above the circuit board and protrude from the lower surface of the circuit board, and the lower surface or side end of the substrate of the light emitting device is The claw portion through the circuit board Thus it is supported and configured to be held below the circuit board.

  In the illumination device having such a configuration, the claw portion of the lens holder is inserted into the insertion hole of the circuit board to protrude from the lower surface of the circuit board, and the lower surface or the side end portion of the substrate is supported by the protruding claw portion. Thus, the light emitting device can be held via the circuit board for each lens holder. In the illumination device, since the lens holder also functions as a mounting member for the light emitting device, the position of the light emitting unit of the light emitting device can be accurately adjusted with respect to the position of the lens accommodated in the lens holder.

  Moreover, the illuminating device according to the present invention includes a heat radiating member arranged below the light emitting device, and the heat radiating member supports the lower surfaces or side end portions of the substrate of the light emitting device. And the lower surface of the substrate of the light emitting device is disposed in close contact with the upper surface of the heat radiating member. A configuration is preferable.

  In the lighting device having such a configuration, when the heat dissipation member is disposed below the plurality of light emitting devices, the tip of the claw portion of the lens holder protruding from the lower surface of the substrate of the light emitting device is disposed in the housing hole of the heat dissipation member. Since the lower surface of the substrate of the light emitting device can be brought into close contact with the upper surface of the heat radiating member, heat radiation can be performed with maximum efficiency.

  Moreover, the illumination device according to the present invention includes a flat lens cover disposed above the plurality of lenses, and the lens cover includes a plurality of through holes equal in number to the lenses, and the lens cover The through hole is formed smaller than the outer diameter of the lens, and the lens is fixed in the lens holder by the edge of the through hole of the lens cover being in contact with the peripheral end of the lens. It is preferable that

  In the illuminating device having such a configuration, when the lens cover is disposed above the plurality of lenses, the lens cover is disposed with the edge of the through hole of the lens cover contacting the peripheral end portion of the lens. It is possible to prevent wobbling in the holder and fix the position of the lens.

  In the illumination device according to the present invention, a pair of power supply terminals for supplying a current to the pair of electrodes included in the light emitting device is disposed around the through hole in the lower surface of the circuit board. It is preferable that the terminal is configured by an elastic member.

  In the lighting device having such a configuration, since the power supply terminal for supplying current to the light emitting device is formed of an elastic member, the light emitting device is disposed below the circuit board, and the power supply terminal of the circuit board is provided. When power is supplied by bringing the electrode of the light emitting device into contact with the light emitting device, the light emitting device is always pressed downward, and the light emitting device can be prevented from wobbling in the vertical direction. In addition, since the lighting device can supply power by bringing the electrode of the light emitting device into contact with the power supply terminal arranged on the circuit board, current can be supplied to a plurality of light emitting devices at once without stretching the wiring. Can be supplied.

  Further, the lighting device according to the present invention has a configuration in which each of the pair of power supply terminals is disposed at a point-symmetrical position with respect to the center of the through hole of the circuit board on the lower surface of the circuit board. It is preferable.

  In the lighting device having such a configuration, a pair of power feeding terminals for supplying a current to the light emitting device are arranged at point-symmetric positions with respect to the center of the through hole of the circuit board. When the light emitting device is arranged below and the power supply terminal of the circuit board is brought into contact with the electrode of the light emitting device to supply power, the light emitting device is always pressed downward with an equal force, and the light emitting device It is possible to more reliably prevent wobbling in the vertical direction.

  In the illumination device according to the present invention, the lens holder includes a plurality of columnar portions protruding from a lower end of the cylinder, and the circuit board is inserted through the plurality of columnar portions of the lens holder disposed above. And the plurality of columnar portions are respectively provided in a direction perpendicular to the direction of the claw of the claw portion at the lower end of the lens holder tube, and from above the circuit board to the insertion hole. It is preferable that the light emitting device is formed so as to come into contact with a side end portion of the light emitting device disposed below the circuit board when inserted.

  In the illumination device having such a configuration, the columnar portion of the lens holder is inserted into the insertion hole of the circuit board to protrude from the lower surface of the circuit board, and the protruding columnar portion is supported by the claw portion of the lens holder. By making contact with a side end portion different from the side end portion of the substrate of the light emitting device, it is possible to prevent positional deviation in the front-rear direction and the left-right direction of the light emitting device disposed below the circuit board.

  According to the illumination device of the present invention, since the light emitting device (COB) can be held by the lens holder, it is not necessary to prepare a separate holder for holding the light emitting device, and a plurality of light emitting devices can be easily provided. In addition, it is possible to easily perform operations such as replacement of the light emitting device. Moreover, according to the illuminating device, since the position of the light emitting device can be adjusted with respect to the position of the lens by the lens holder, the positional accuracy of both can be improved. According to the lighting device, the circuit board can supply current to the plurality of light emitting devices at once, so that a large number of wires are not stretched in a narrow space in the lighting device. Operations such as replacement can be easily performed.

It is a perspective view which shows the whole structure of the illuminating device which concerns on embodiment of this invention. It is a disassembled perspective view which shows the whole structure of the illuminating device which concerns on embodiment of this invention. It is a figure which shows the relationship of each member which comprises the illuminating device which concerns on embodiment of this invention, Comprising: It is a perspective view which shows the example using a coil connector as a terminal for electric power feeding. It is a figure which shows the relationship of each member which comprises the illuminating device which concerns on embodiment of this invention, Comprising: (a) is a side view which shows the state before combining a lens, a lens holder, a circuit board, and a light-emitting device, (b) ) Is a side view showing a state after combining a lens, a lens holder, a circuit board, and a light emitting device, and (c) is a diagram showing a relationship between a power feeding terminal of the circuit board and a substrate of the light emitting device. It is the A section enlarged view of (b). It is a figure which shows the relationship of each member which comprises the illuminating device which concerns on embodiment of this invention, Comprising: The side view which shows the state after combining a lens cover, a lens, a lens holder, a circuit board, a light-emitting device, and a heat radiating member, It is. It is a figure which shows the relationship of each member which comprises the illuminating device which concerns on embodiment of this invention, Comprising: It is a top view which shows the state which observed FIG.4 (b) from the bottom. It is a figure which shows the relationship of each member which comprises the illuminating device which concerns on embodiment of this invention, Comprising: It is a perspective view which shows the example which used the leaf | plate spring connector as a terminal for electric power feeding.

  Hereinafter, an illumination device according to an embodiment of the present invention will be described with reference to the drawings. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Further, in the following description, the same name and reference sign indicate the same or the same members in principle, and the detailed description will be omitted as appropriate.

  The lighting device 1 is a device such as a downlight that is installed in a ceiling or the like. Here, as shown in FIG. 1, the illumination device 1 includes a circuit board 10, a light emitting device 20, a heat dissipation member 30, a lens holder 40, a lens 50, and a lens cover 60. 1 and 2, the lighting device 1 is arranged such that a plurality of light emitting devices 20 are sandwiched between the circuit board 10 and the heat dissipation member 30, and the lens cover 60 and the circuit board 10 are arranged. A plurality of lens holders 40 that accommodate a plurality of lenses 50 are disposed therebetween.

As shown in FIG. 2, in the lighting device 1, the circuit board 10 and the heat dissipation member 30 are fastened by fastening members B ₁ and B ₂ , and the circuit board 10 and the lens cover 60 are fastened through the fastening member B _2. It is fastened by member B _3. Incidentally, the fastening member B ₂ described above, as shown in FIG. 2, also play a spacer function between the circuit board 10 and the lens cover 60.

  The circuit board 10 is a printed board for supplying current to the light emitting device 20. Here, the circuit board 10 is formed in a disk shape as shown in FIG. Although not shown, an external power source is connected to the circuit board 10 and, as will be described later, a plurality of light emission units via a plurality of power supply terminals 14 (see FIG. 3) arranged on the lower surface. It is comprised so that an electric current can be supplied to the apparatus 20. FIG. Further, as shown in FIG. 2, a plurality of holes having different shapes and sizes are formed in the circuit board 10 so as to be combined with other members. Specifically, the plurality of through holes 11 are formed. A plurality of insertion holes 12 and a plurality of insertion holes 13 are formed.

  The through hole (light emitting part hole part) 11 is for exposing the light emitting part 22 of the light emitting device 20 disposed below the circuit board 10. As shown in FIG. 2, the through hole 11 is formed in a circular shape above the light emitting unit 22 of the light emitting device 20 according to the shape of the light emitting unit 22. Further, as shown in FIG. 2, the number of through holes 11 is the same as the number of light emitting devices 20 (eight here).

  The insertion hole 12 (claw part hole part) is for inserting the claw part 41 of the lens holder 40. Here, as shown in FIG. 2, the insertion hole 12 is formed in a rectangular shape in accordance with the shape (see FIG. 6) when the claw portion 41 of the lens holder 40 is observed from the front. In addition, as shown in FIG. 2, the insertion hole 12 is formed in such a size that the collar portion 412 (see FIG. 4A) that is the tip of the claw portion 41 can be inserted. When the claw portion 41 is inserted into the insertion hole 12, the inclined portion of the collar portion 412 abuts on the edge of the insertion hole 12 and is inserted so as to slide at the inclined portion.

  As shown in FIG. 2, the insertion holes 12 are formed in the same number (four in this case) as the number of the claw portions 41 of the lens holder 40. Further, as shown in FIG. 2, the insertion hole 12 is formed around the through hole 11, and more specifically, in accordance with the position of the claw portion 41 of the lens holder 40 (see FIG. 6). When the light emitting device 20 is disposed below the light emitting device 20, the light emitting device 20 is formed so as to be positioned at the four corners.

  The insertion hole (columnar portion hole portion) 13 is for inserting the columnar portion 42 of the lens holder 40. Here, as shown in FIG. 2, the insertion hole 13 is formed in a circular shape in accordance with the shape of the columnar portion 42 of the lens holder 40 (see FIG. 6). Further, as shown in FIG. 2, the insertion holes 13 are formed in the same number (two in this case) as the number of the columnar portions 42 of the lens holder 40. As shown in FIG. 2, the insertion hole 13 is formed around the through hole 11, and more specifically, in accordance with the position of the columnar portion 42 of the lens holder 40 (see FIG. 6). The claw portion 41 is provided in a direction orthogonal to the direction in which the claw faces (the left-right direction in FIG. 6).

  As shown in FIG. 3, a plurality of power supply terminals 14 are arranged on the lower surface of the circuit board 10. The power supply terminal 14 is for supplying a current to the electrode 23 of the light emitting device 20. Here, as shown in FIG. 3, the power supply terminals 14 are disposed in pairs around the through holes 11 on the lower surface of the circuit board 10 at positions facing the pair of electrodes 23 (see FIG. 2) provided in the light emitting device 20. Has been. That is, when eight light-emitting devices 20 are used as shown in FIG. 2, a total of 16 power supply terminals 14 (eight pairs of power supply terminals 14) are arranged on the lower surface of the circuit board 10.

  Specifically, as shown in FIG. 3, the power supply terminal 14 is formed of an elastic member such as a coil connector at the portion connected to the electrode 23 of the light emitting device 20, and the tip is elastically deformed in the vertical direction. Is configured to do. Thereby, as shown in FIGS. 4A and 4B, when the light emitting device 20 is attached to the claw portion 41 of the lens holder 40, the lighting device 1 supplies power to the electrode 23 (see FIG. 2) of the light emitting device 20. A current is supplied to the light emitting device 20 in contact with the power terminal 14, and the substrate 21 of the light emitting device 20 is pressed downward by the elastic force of the power supply terminal 14 as shown in FIG. It becomes a state. At that time, each of the power supply terminals 14 is in a state of pressing the substrate 21 of the light emitting device 20 at two points around the through hole 11 as shown in FIG. In the lighting device 1 having such a configuration, when the light emitting device 20 is arranged below the circuit board 10 and the electrode 23 of the light emitting device 20 is brought into contact with the power feeding terminal 14 of the circuit board 10, Since the light emitting device 20 is always pressed downward, the light emitting device 20 can be prevented from wobbling in the vertical direction. Moreover, since the illuminating device 1 can supply electric power by bringing the electrode 23 of the light emitting device 20 into contact with the power supply terminal 14 disposed on the circuit board 10, a plurality of light emitting devices can be provided without stretching the wiring or the like. The current can be supplied to 20 at a time.

  In addition, as described above, the pair of power supply terminals 14 arranged for each light emitting device 20 has an upper left position that is point-symmetric with respect to the center X of the through hole 11 of the circuit board 10 as shown in FIG. And at the bottom right. In the lighting device 1 having such a configuration, when the light emitting device 20 is arranged below the circuit board 10 and the electrode 23 of the light emitting device 20 is brought into contact with the power feeding terminal 14 of the circuit board 10, Since the light emitting device 20 is always pressed downward with an equal force, the light emitting device 20 can be more reliably prevented from wobbling in the vertical direction.

  The light emitting device 20 is a light source of the lighting device 1. Specifically, as shown in FIG. 2, the light emitting device 20 includes a substrate 21, a light emitting unit 22 disposed on the substrate 21, and a pair of electrodes 23 and 23 disposed on the substrate 21. It consists of a COB type device. As shown in FIG. 2, the substrate 21 of the light emitting device 20 is formed in a rectangular shape and is formed of a material having excellent thermal conductivity such as ceramics or Al. Moreover, the light emission part 22 of the light-emitting device 20 is comprised by the single or several light emitting element (LED).

  As shown in FIG. 2, the light emitting device 20 is disposed below the circuit board 10 and above the heat radiating member 30 so as to be sandwiched between the two. In addition, as shown in FIG. 3, the light emitting device 20 is disposed so that the light emitting unit 22 faces the through hole 11 of the circuit board 10. Therefore, the lens 50 is disposed above the light emitting unit 22 of the light emitting device 20 through the through hole 11. Therefore, the light from the light emitting unit 22 of the light emitting device 20 is incident on the lens 50 through the above-described through hole 11. In addition, as shown in FIG. 1, the light emitting device 20 is disposed so that the lower surface thereof is in close contact with the upper surface of the heat radiating member 30, so that the heat generated in the light emitting device 20 can be radiated through the heat radiating member 30. It is configured.

  Further, as shown in FIGS. 4A and 4B, the light emitting device 20 is held below the circuit board 10 by being supported by the claw portion 41 of the lens holder 40 through the circuit board 10. It becomes a state. That is, since the claw portion 41 of the lens holder 40 is formed longer than the thickness of the circuit board 10 as shown in FIG. 4A, the claw portion 41 is inserted into the insertion hole 12 of the circuit board 10. Then, as shown in FIG. 4B, a portion of the claw portion 41 that exceeds the thickness of the circuit board 10 is in a state of protruding from the lower surface of the circuit board 10. Then, as shown in FIG. 4B, the light emitting device 20 is held below the circuit board 10 by supporting the lower surface and the side edge of the substrate 21 by the claw portion 41 of the protruding lens holder 40. It becomes the state. As shown in FIG. 4C, the substrate 21 of the light emitting device 20 is pressed from above by the power supply terminal 14 of the circuit board 10, and is fixed so as not to move upward. . That is, as shown in FIG. 4C, the light emitting device 20 is in a state where the position is fixed by being sandwiched from above and below by the tip of the power supply terminal 14 and the folded upper surface 41 a of the claw portion 41. .

  In addition, the state in which “the lower surface and the side end of the substrate 21 are supported by the claw portion 41” is more specifically, as shown in FIG. 4C, the claw portion 41 on the lower surface 21a of the substrate 21. This means that the folded upper surface 41 a contacts and the inner side surface 41 b of the claw portion 41 contacts the side end portion 21 b of the substrate 21. However, in the light emitting device 20, the folded upper surface 41a of the claw portion 41 is in contact with the lower surface 21a of the substrate 21, or the inner side surface 41b of the claw portion 41 is in contact with the side end portion 21b of the substrate 21. In any state, a state held below the circuit board 10 can be formed.

  Here, the relationship of each member in FIG.4 (c) is demonstrated concretely. First, since the claw portion 41 of the lens holder 40 is formed longer than the thickness e of the circuit board 10 as shown in FIG. 4C, when the lens holder 40 is inserted through the insertion hole 12, A portion f exceeding the thickness e protrudes from the lower surface of the circuit board 10. At this time, the lower surface of the circuit board 10 and the folded upper surface 41a of the claw portion 41 of the lens holder 40 are in a state separated by a distance a as shown in FIG. As shown in FIG. 4C, when the substrate 21 of the light emitting device 20 is supported by the claw portion 41 of the lens holder 40, the tip of the power supply terminal 14 in contact with the electrode 23 is pushed upward by a distance b. It is. On the other hand, when the light emitting device 20 is pushed upward, the tip of the power supply terminal 14 has a margin that can be pushed further upward by a distance c as shown in FIG. However, as described above, since the power supply terminal 14 is formed of an elastic member, the light emitting device 20 is pressed from above by the power supply terminal 14. Then, as shown in FIG. 4C, the position of the light emitting device 20 is fixed by being sandwiched between the tip of the power supply terminal 14 and the folded upper surface 41 a of the claw portion 41 from above and below. Therefore, it does not wobble up and down.

  The heat radiating member 30 radiates heat generated by the light emitting device 20. As shown in FIG. 2, the heat radiating member 30 is configured by a general heat sink. As shown in FIG. 1, the heat dissipating member 30 is disposed below the plurality of light emitting devices 20, and is disposed so as to sandwich the plurality of light emitting devices 20 together with the circuit board 10.

  As shown in FIG. 2, a plurality of accommodation holes 31 are formed in the heat radiating member 30 in order to be combined with other members. This accommodation hole (claw tip end hole) 31 is inserted into the insertion hole 12 of the circuit board 10 and has a flange 412 (see FIG. 4) that is the tip of the claw part 41 of the lens holder 40 protruding from the lower surface of the circuit board 10. 4 (a)). Here, the accommodation hole 31 is formed in a circular shape as shown in FIG. In addition, as shown in FIG. 2, the accommodation hole 31 is formed in a size that can accommodate the collar portion 412 (see FIG. 4A) that is the tip of the claw portion 41. Further, as shown in FIG. 2, the same number (32 in this case) of the receiving holes 31 as the number of the claw portions 41 of the lens holder 40 is formed.

  Then, as shown in FIG. 5, the lighting device 1 accommodates the collar portion 412 that is the tip of the claw portion 41 of the lens holder 40 in the accommodation hole 31, whereby the lower surface 21 a of the substrate 21 of the light emitting device 20. Is disposed in close contact with the upper surface of the heat dissipation member 30. In the lighting device 1 having such a configuration, the lower surface 21 a of the substrate 21 of the light emitting device 20 can be brought into close contact with the upper surface of the heat radiating member 30 when the heat radiating member 30 is disposed below the plurality of light emitting devices 20. , Heat dissipation can be performed as efficiently as possible.

  The lens holder 40 accommodates and holds the lens 50. As shown in FIG. 2, the lens holder 40 is formed in a cylindrical shape. The inner diameter of the cylinder of the lens holder 40 is configured to be the same as the outer diameter (the largest diameter portion) of the lens 50, and as shown in FIG. 4B, the lens 50 is accommodated in the cylinder. Yes. Further, the same number of lens holders 40 as the light emitting devices 20 and the lenses 50 (eight in this case) are provided. The plurality of lens holders 40 are arranged at positions corresponding to the through holes 11 of the circuit board 10 above the circuit board 10 as shown in FIG. More specifically, as shown in FIG. 4A, the lens holder 40 is disposed above the circuit board 10 at a position where the center of the lens holder 40 and the center of the through hole 11 coincide.

  Here, the lens holder 40 not only houses the lens 50 but also has a function of holding the light emitting device 20 below the circuit board 10. That is, as shown in FIG. 3, the lens holder 40 includes a plurality (here, four) of claw portions 41 protruding from the lower end of the cylinder. As shown in FIG. 4A, the claw portion 41 includes a straight rod-like column portion 411 and a flange portion 412 at the tip of the column portion 411. As shown in FIGS. 4 (a) and 4 (b), the claw portion 41 is inserted into the insertion hole 12 of the circuit board 10, and a part of the column portion 411 and the flange portion 412 are formed on the lower surface of the circuit board 10. Protrusively. When the claw portion 41 is inserted into the insertion hole 12, the inclined portion of the collar portion 412 abuts on the edge of the insertion hole 12 and is inserted so as to slide at the inclined portion. Then, as shown in FIG. 4C, the lens holder 40 supports the lower surface 21 a and the side end 21 b of the substrate 21 of the light emitting device 20 by the claw portions 41 protruding from the lower surface of the circuit board 10.

  Further, as shown in FIGS. 3 and 4A, the lens holder 40 includes a plurality (here, two) of columnar portions 42 protruding from the lower end of the cylinder. As shown in FIG. 3, the columnar portions 42 are respectively inserted into the insertion holes 13 (see FIG. 2) of the circuit board 10. Since the columnar part 42 is formed longer than the thickness of the circuit board 10 as shown in FIG. 4A, the columnar part 42 is inserted into the insertion hole 13 (see FIG. 3) of the circuit board 10. Then, as shown in FIG. 4B, a portion of the columnar portion 42 exceeding the thickness of the circuit board 10 is in a state of protruding from the lower surface of the circuit board 10.

  Further, as shown in FIG. 6, the columnar portion 42 is provided at a lower end of the tube of the lens holder 40 in a direction (here, up and down direction) orthogonal to a direction (here, left and right direction) of the claw portion 41. It has been. The “direction in which the claws 41 face the nails” means, more specifically, the direction in which the claws (the ridge portions 412) of the claws 41 face each other, as shown in FIG. When the columnar portion 42 is inserted into the insertion hole 13 of the circuit board 10, as shown in FIG. 6, the side end portion 21 b of the substrate 21 of the light emitting device 20 supported by the claw portion 41 of the lens holder 40. , 21b is formed at the lower end of the tube of the lens holder 40 so as to abut on the side end portions 21c, 21c different from those of the lens holder 40. The illuminating device 1 having such a configuration can prevent the positional deviation in the front-rear direction and the left-right direction of the light-emitting device 20 disposed below the circuit board 10.

  The lens 50 focuses the light from the light emitting device 20. As shown in FIG. 2, the number of lenses 50 is the same as the number of light-emitting devices 20, and is eight here. Further, as shown in FIG. 2, each of the lens holders 40 is accommodated in a cylinder of the lens holder 40. Further, as shown in FIG. 4A, the lens 50 is arranged such that the optical axis thereof coincides with the center X of the through hole 11 of the circuit board 10 and the center of the light emitting unit 22 of the light emitting device 20. Yes.

  The lens cover 60 supports the lens 50. Here, as shown in FIG. 2, the lens cover 60 is formed in a disc shape. The lens cover 60 is disposed above the lens 50 as shown in FIG. The lens cover 60 is formed with a plurality of through holes 61 as shown in FIG.

  The through hole 61 (lens hole) is for exposing the lens 50. Here, the through hole 61 is formed in a circular shape in accordance with the shape of the lens 50 as shown in FIG. Further, as shown in FIG. 2, the number of through holes 61 is the same as the number of lenses 50 (here, eight). Moreover, the through-hole 61 is formed smaller than the outer diameter of the lens 50 as shown in FIG. As shown in FIG. 5, the lighting device 1 having such a configuration has a through hole 61 of the lens cover 60 in the peripheral end portion 51 of the lens 50 when the lens cover 60 is disposed above the plurality of lenses 50. Since it arrange | positions, contacting an edge, it can prevent that each lens 50 shakes within the lens holder 40, and can fix the position of the lens 50. FIG. For example, if the lens 50 is fixed to the lens holder 40, the lens cover 60 may not be provided.

  In the lighting device 1 having the above-described configuration, the claw portion 41 of the lens holder 40 is inserted into the insertion hole 12 of the circuit board 10 to protrude from the lower surface of the circuit board 10, and the substrate 21 is projected by the protruding claw portion 41. By supporting the lower surface 21a or the side end portion 21b, the light emitting device 20 can be held via the circuit board 10 for each lens holder 40. Moreover, since the lens holder 40 functions also as an attachment member of the light-emitting device 20, the lighting device 1 accurately adjusts the position of the light-emitting unit 22 of the light-emitting device 20 with respect to the position of the lens 50 accommodated in the lens holder 40. be able to.

  Therefore, according to the illuminating device 1, since the light emitting device (COB) 20 can be held by the lens holder 40, it is not necessary to prepare a separate holder for holding the light emitting device 20, and a plurality of light emitting devices can be provided. 20 can be easily mounted, and work such as replacement of the light emitting device 20 can be easily performed. Moreover, according to the illuminating device 1, since the position of the light-emitting device 20 with respect to the position of the lens 50 can be adjusted by the lens holder 40, the positional accuracy of both can be improved. And according to the illuminating device 1, since the circuit board 10 can supply an electric current to the several light-emitting device 20 collectively, many wiring is not stretched in the narrow space in the illuminating device 10. FIG. Further, work such as replacement of the light emitting device 20 can be easily performed.

  Hereinafter, the assembly procedure of the illumination device 1 according to the embodiment of the present invention will be described with reference to FIG. 2 (refer to other drawings as appropriate). First, the assembly procedure of the lighting device 1 is as follows. The circuit board 10 is prepared, the claw portion 41 of the lens holder 40 is inserted into the insertion hole 12 of the circuit board 10, and the lens holder 40 is inserted into the insertion hole 13 of the circuit board 10. The plurality of lens holders 40 are arranged on the circuit board 10 through the columnar portion 42 (first step). When this first step is completed, the claw portion 41 and the columnar portion 42 are projected below the circuit board 10 (see FIG. 3).

  Next, the assembly procedure of the lighting device 1 is such that the lower surface 21 a and the side end portion 32 b of the light emitting device 20 are supported by the claw portions 41 of the lens holder 40 protruding from the lower surface of the circuit board 10, and the light emitting device is placed below the circuit board 10. 20 is attached (second step). When this second step is finished, the columnar portion 42 of the lens holder 40 protruding from the lower surface of the circuit board 10 is supported by the side end portions 21b and 21b of the substrate 21 of the light emitting device 20 supported by the claw portion 41 of the lens holder 40. Since they are in contact with different side end portions 21c and 21c (see FIG. 6), positional deviation of the light emitting device 20 is prevented.

Next, the assembling procedure of the lighting device 1 is to dispose the heat dissipating member 30 below the circuit board 10 and fasten the circuit board 10 and the heat dissipating member 30 by the fastening members B ₁ and B ₂ (third step). When this third step is completed, the tip of the claw portion 41 of the lens holder 40 is accommodated in the accommodation hole 31 of the heat dissipation member 30, and the lower surface 21 a of the substrate 21 of the light emitting device 20 is in close contact with the upper surface of the heat dissipation member 30. (See FIG. 5).

Next, the assembly procedure of the illuminating device 1 accommodates the lens 50 in the cylinder of the lens holder 40 (4th step). Note that the order of the fourth step and the third step may be reversed. Next, the assembly procedure of the illumination device 1, the lens cover 60 is disposed above the lens holder 40 and the lens 50, by a fastening member B _3, fastening the fastening member B ₂ on the lens cover 60 and the circuit board 10 (Fifth step). When the fifth step is completed, the edge of the through hole 61 of the lens cover 60 is in contact with the peripheral end 51 of the lens 50 (see FIG. 5), and the lens 50 is fixed in the cylinder of the lens holder 40. The The assembling procedure of the illuminating device 1 completes the illuminating device 1 shown in FIG. 1 by the above procedures.

  The lighting device according to the present invention has been specifically described above by the embodiments for carrying out the invention. However, the gist of the present invention is not limited to these descriptions, and is based on the descriptions in the claims. It must be interpreted widely. Needless to say, various changes and modifications based on these descriptions are also included in the spirit of the present invention.

  For example, in the lighting device 1 described above, the power supply terminal 14 is configured by a coil connector, but as shown in FIG. 7, a power supply terminal 14A formed of a leaf spring connector may be used. As shown in FIG. 7, the power supply terminal 14A is formed by bending a plate-like metal member. Therefore, the power feeding terminal 14A is configured to press the substrate 21 of the light emitting device 20 at four points around the through hole 11 when the light emitting device 20 is held below the circuit board 10 (see FIG. 4B). Has been. Therefore, the lighting device according to the modification using the power supply terminal 14 </ b> A presses the substrate 21 more evenly at the four points around the through hole 11 against the upper surface of the heat dissipation member 30. Can improve heat dissipation.

  Further, as shown in FIG. 1, the lighting device 1 described above has a total of eight light emitting devices 20, but is not particularly limited as long as the number of the light emitting devices 20 is two or more.

  In addition, as shown in FIG. 6, the lighting device 1 described above contacts the side end portions 21 c and 21 c of the substrate 21 of the light emitting device 20 when the columnar portion 42 is inserted into the insertion hole 13 of the circuit board 10. Although formed so as to contact, it does not necessarily need to be formed so as to contact the side end portions 21c, 21c. That is, the columnar portion 42 may be formed so as to have a predetermined distance from the side end portions 21 c and 21 c of the substrate 21 of the light emitting device 20 as long as the positional deviation of the light emitting device 20 can be prevented.

DESCRIPTION OF SYMBOLS 1 Illuminating device 10 Circuit board 11 Through-hole (hole part for light emission parts)
12 Insertion hole (hole for claw)
13 Insertion hole (hole for columnar part)
14, 14A Power supply terminal 20 Light-emitting device 21 Substrate 21a Lower surface 21b, 21c Side end 22 Light-emitting part 23 Electrode 30 Heat radiation member 31 Housing hole (hole part for claw part tip)
40 Lens holder 41 Claw portion 411 Column portion 412 Gutter portion 41a Folding upper surface 41b Inner side surface 42 Columnar portion 50 Lens 51 Peripheral end portion 60 Lens cover 61 Through hole (lens hole portion)
B ₁ , B ₂ , B ₃ fastening member

Claims (7)

  A light emitting device comprising: a substrate; and a light emitting unit disposed on the substrate;
A circuit that is disposed above the light emitting device and includes a through hole formed above the light emitting unit and a plurality of insertion holes formed around the through hole, and that supplies current to the light emitting device. A substrate,
  A cylindrical lens holder disposed above the circuit board;
  A lighting device comprising a lens housed in a tube of the lens holder,
  The lens holder includes a plurality of claw portions protruding from the lower end of the cylinder,
  The claw portion is inserted into the insertion hole from above the circuit board and protrudes from the lower surface of the circuit board.
  In the light emitting device, a lower surface or a side end portion of the substrate is supported by the claw portion via the circuit board and held below the circuit board. A plurality of light emitting devices including a substrate and a light emitting unit disposed on the substrate;
A through hole disposed above the light emitting unit and formed above the light emitting unit; and a plurality of insertion holes formed around the through hole; and A circuit board for supplying,
A plurality of cylindrical lens holders, the number of which is the same as the number of the light emitting devices, disposed above the circuit board;
A lighting device comprising a lens housed in a tube of the lens holder,
The lens holder includes a plurality of claw portions protruding from the lower end of the cylinder,
The claw portion is inserted into the insertion hole from above the circuit board and protrudes from the lower surface of the circuit board.
In the light emitting device, a lower surface or a side end portion of the substrate is supported by the claw portion via the circuit board and held below the circuit board. A heat dissipating member disposed below the light emitting device;
The heat dissipating member includes an accommodation hole that accommodates tips of the plurality of claws that support a lower surface or a side end of the substrate of the light emitting device,
By the tip of the plurality of claw portions in the accommodation hole of the heat radiating member is accommodated, according to claim 1, characterized in that the lower surface of the substrate of the light emitting device is disposed in close contact with the upper surface of the heat radiating member or The lighting device according to claim 2 . A flat lens cover disposed above the plurality of lenses;
The lens cover includes a plurality of through holes equal to the number of the lenses,
The through hole of the lens cover is formed smaller than the outer diameter of the lens,
The lighting device according to claim 2 , wherein the lens is fixed in the lens holder by an edge of a through hole of the lens cover being in contact with a peripheral end portion of the lens. Around the through hole on the lower surface of the circuit board, a pair of power supply terminals for supplying a current to the pair of electrodes included in the light emitting device is disposed,
The lighting device according to claim 1, wherein the power feeding terminal is formed of an elastic member. The lighting device according to claim 5 , wherein each of the pair of power supply terminals is disposed on a lower surface of the circuit board at a point-symmetrical position with respect to a center of the through hole of the circuit board. . The lens holder includes a plurality of columnar portions protruding from the lower end of the cylinder,
The circuit board includes an insertion hole through which the plurality of columnar portions of the lens holder disposed above are inserted,
The plurality of columnar portions are respectively provided in a direction perpendicular to the direction of the claw of the claw portion at the lower end of the tube of the lens holder, and when inserted into the insertion hole from above the circuit board, The lighting device according to any one of claims 1 to 6 , wherein the lighting device is formed so as to abut on a side end portion of the substrate of the light emitting device disposed below the circuit board.

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