JP2014067646A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of controlling light distribution of an LED and preventing adhesion of dust, etc. to the LED while suppressing reduction in transmissivity of light emitted from the LED.SOLUTION: A lighting device comprises a plurality of light-emitting units 500 including an LED 510 and a substrate 520, a base 410 on which the plurality of the light-emitting units 500 are mounted, and a light-transmitting cover 600 fixing to the base 410 and protecting the plurality of the light-transmitting units 500. The light-transmitting cover 600 is arranged so as to correspond to the plurality of the light-emitting units 500 respectively and cover each of the plurality of the light-emitting units 500, and includes a plurality of lens parts 610 which guide light emitted from the plurality of the light-emitting units 500 in a prescribed direction and a connection part 620 which connects the plurality of the lens parts 610.

Description

  The present invention relates to a lighting device using a semiconductor light emitting element.

  In recent years, semiconductor light emitting devices such as LEDs (Light Emitting Diodes) are expected to be a new light source for various lighting devices because of their small size, high efficiency, and long life, and research on LED lighting devices using LEDs as light sources. Development is underway.

  In such LED lighting devices, conventionally, a lens for controlling the light distribution from the LED is provided on the front surface of the LED, and dust or the like is attached to the LED on the front surface of the lens. A light-transmitting cover is provided for prevention (see, for example, Patent Document 1).

JP 2007-258114 A

  However, since the conventional LED lighting device includes a lens and a cover in the light irradiation direction of the LED in order to control the light distribution of the LED and prevent dust and the like from adhering to the LED, the light from the LED There is a problem that the transmittance of the liquid crystal decreases.

  That is, for example, when the transmittance of the lens is 0.9 and the transmittance of the cover is 0.9, the transmittance of light from the LED is reduced to 0.9 × 0.9 = 0.81. To do.

  The present invention has been made to solve the above-described problem, and controls the light distribution of the LED and prevents the adhesion of dust and the like to the LED while suppressing the decrease in the transmittance of light from the LED. An object of the present invention is to provide a lighting device that can perform the above-described operation.

  In order to achieve the above object, a lighting device according to one embodiment of the present invention includes a plurality of light-emitting units each including a semiconductor light-emitting element and a substrate over which the semiconductor light-emitting element is provided, and the plurality of light-emitting units are attached. A base and a cover fixed to the base and protecting the plurality of light emitting units, the cover covering each of the plurality of light emitting units corresponding to each of the plurality of light emitting units. And a plurality of lens portions that guide light emitted from the plurality of light emitting units in a predetermined direction, and a connecting portion that connects the plurality of lens portions.

  According to this, the cover that protects the light emitting unit of the illumination device includes a plurality of lens portions corresponding to each of the plurality of light emitting units, and a connecting portion that connects the plurality of lens portions. That is, the cover of the light emitting unit also serves as the lens of the light emitting unit. For this reason, according to the illumination device, since the single component having the two functions of the lens and the cover is provided instead of the two components of the lens and the cover, the light distribution of the LED is controlled and the dust on the LED is also controlled. It is possible to suppress a decrease in the transmittance of light from the LED while preventing such adhesion.

  The plurality of light emitting units are annularly arranged, the base has an opening formed at a central position of the plurality of light emitting units arranged in an annular shape, and the connecting portion is formed of the base. An opening may be formed at a position corresponding to the opening of the table.

  According to this, the opening part is formed in the center position of the some light emission unit arrange | positioned cyclically | annularly at a base and a connection part. For this reason, the heat which LED emits can be thermally radiated from the said opening part, and the fall of the luminous efficiency of LED by the said heat can be suppressed.

  In addition, it further includes a closing portion that closes a gap between the base and the cover, and the closing portion closes the gap between the base and the connecting portion. You may decide to arrange | position between these parts.

  According to this, since the illuminating device includes the closing portion that closes the gap between the base and the connecting portion, it is possible to prevent dust and the like from entering the cover from the gap and to the LED. It is possible to reliably prevent adhesion of dust and the like.

  Further, the connecting portion connects the plurality of lens portions arranged in an annular shape corresponding to each of the plurality of light emitting units arranged in an annular shape, and the closing portion is arranged in the annular shape. You may decide to be arrange | positioned cyclically | annularly between the said connection part and the said base on the inner side and the outer side of a some lens part.

  According to this, since the closing part is arranged annularly inside and outside the plurality of lens parts arranged annularly so as to surround the plurality of lens parts, the plurality of lens parts and the plurality of light emitting units are arranged. It is possible to prevent dust and the like from entering between.

  In addition, the closing portion is disposed on a protrusion formed on the connecting portion, and a lead wire for supplying power to the light emitting unit is disposed between the connecting portion and the base. A space may be formed.

  According to this, since a space for arranging the lead wire is formed between the connecting portion and the base, the lighting device can be manufactured by easily arranging the lead wire.

  In addition, the connecting portion has a flat shape, the lens portion has a shape protruding from the connecting portion, and the plurality of lens portions and the connecting portion are integrally formed. You may decide that

  According to this, since the plurality of lens portions and the connecting portion are integrally formed, the number of parts of the cover can be reduced, and the lighting device can be easily manufactured.

  According to the illuminating device according to the present invention, it is possible to control the light distribution of the LED and to prevent the light from being transmitted from the LED from being lowered while preventing dust and the like from adhering to the LED.

It is a figure which shows typically the external appearance of the illuminating device which concerns on embodiment of this invention. It is a figure which shows typically the external appearance of the illuminating device which concerns on embodiment of this invention. It is a figure which shows the structure of the lower part of the illuminating device which concerns on embodiment of this invention. It is a figure which shows the structure of the bulk which concerns on embodiment of this invention. It is a figure which shows the structure of the bulk which concerns on embodiment of this invention. It is a figure which shows the structure of the light emission unit which concerns on embodiment of this invention. It is a figure which shows the structure of the translucent cover which concerns on embodiment of this invention. It is a figure which shows the structure of the translucent cover which concerns on embodiment of this invention. It is sectional drawing which shows the lens part and connection part of the translucent cover which concern on embodiment of this invention. It is a figure which shows the structure of the obstruction | occlusion part which concerns on embodiment of this invention. It is a figure which shows the structure of the obstruction | occlusion part which concerns on embodiment of this invention. It is a figure which shows the positional relationship of the base of the umbrella which concerns on embodiment of this invention, and the connection part of a translucent cover.

  Hereinafter, an illumination device according to an embodiment of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are described as optional constituent elements that constitute a more preferable embodiment. Each figure is a schematic diagram and is not necessarily illustrated exactly.

(Embodiment)
First, the configuration of the illumination device 10 will be described.

  FIG.1 and FIG.2 is a figure which shows typically the external appearance of the illuminating device 10 which concerns on embodiment of this invention. Specifically, FIG. 1 is a perspective view when the illumination device 10 is viewed obliquely from below, and FIG. 2 is a plan view when the illumination device 10 is viewed from the side.

  Moreover, FIG. 3 is a figure which shows the structure of the lower part of the illuminating device 10 which concerns on embodiment of this invention. Specifically, (a) of FIG. 3 is a plan view when the illumination device 10 is viewed from below, and (b) of FIG. 3 is a case of being cut along the A1-A1 line of (a). It is sectional drawing of the lower part of the illuminating device 10 of.

  The lighting device 10 is an LED high ceiling light that is suspended from a high ceiling such as a factory, and is configured to have a brightness equivalent to, for example, a 400 W type. As illustrated in FIGS. 1 to 3, the lighting device 10 includes a round seat 100, a suspension pipe 200, a main body 300, a umbrella 400, a light emitting unit 500, a translucent cover 600, and closing portions 710 and 720.

  In the following description, the upper direction (Z-axis plus direction) shown in these drawings is set as the upper side, and the lower direction (Z-axis minus direction) is set as the lower side. Note that the definition of the above direction is not related to the direction in which the illumination device 10 is attached, and the illumination device 10 may be attached so that any direction is upward or downward.

  The circular seat 100 is an aluminum member connected to the ceiling. The lower part of the round seat 100 is formed in a cylindrical shape, and a suspension pipe 200 is inserted and fixed inside the lower part. The round seat 100 may be formed of a metal other than aluminum, a resin, or the like.

  The suspension pipe 200 is a cylindrical metal member for connecting the round seat 100 and the main body 300, and for example, a thin steel conduit tube is used. The suspension pipe 200 has an upper portion inserted into the lower portion of the round seat 100 and a lower portion inserted into the upper portion of the main body 300. The suspension pipe 200 may be formed of resin or the like instead of metal.

  The main body 300 is a main body portion of the lighting device 10 and is a member made of aluminum. The main body 300 has a hollow shape and has a built-in power supply circuit (not shown) for supplying power to the light emitting unit 500. Note that a control circuit other than a power supply circuit such as a dimming circuit that controls dimming of the light emitting unit 500 may be built in the main body 300.

  The main body 300 has a cylindrical portion formed at the top, and the suspension pipe 200 is inserted and fixed inside the top. The main body 300 may be formed of a metal other than aluminum, a resin, or the like.

  Further, the main body 300 has a flat plate-shaped bottom surface portion 310 formed in the lower portion thereof, and a cap 400 is attached to the lower surface of the bottom surface portion 310. A rectangular opening 311 is formed at the center of the bottom surface 310 at a position corresponding to an opening 411 (described later) of the cap 400. In addition, openings 320 are formed on the side surfaces of the main body 300 (four side surfaces in the present embodiment). Through the opening 311 and the opening 320, heat generated from the power supply circuit and the light emitting unit 500 built in the main body 300 is radiated.

  Casa 400 is an aluminum member having an upper surface attached to the lower surface of bottom surface portion 310 of main body 300. A light emitting unit 500 is attached to the umbrella 400, and a translucent cover 600 is attached so as to cover the light emitting unit 500.

  Further, between the umbrella 400 and the translucent cover 600, closed portions 710 and 720 that close the gap between the umbrella 400 and the translucent cover 600 are arranged. In addition, since the translucent cover 600 has translucency, the closure parts 710 and 720 are seen through from below.

  Further, the attachment of the bulk 400 to the main body 300 and the attachment of the light emitting unit 500 and the translucent cover 600 to the bulk 400 are performed by screws. These attachments are not limited to screwing, and may be fixed by an adhesive or the like.

  Here, detailed configurations of the umbrella 400, the light emitting unit 500, the translucent cover 600, and the closing portions 710 and 720 will be described below. First, the detailed structure of the cap 400 will be described.

  4A and 4B are diagrams showing the configuration of the umbrella 400 according to the embodiment of the present invention. Specifically, FIG. 4A is a plan view of the cap 400 when viewed from below. FIG. 4B is a cross-sectional view of the cap 400 taken along the line A2-A2 of FIG. 4A, and corresponds to the cross-section in FIG.

  The umbrella 400 is a member that holds the light emitting unit 500 and radiates heat generated from the light emitting unit 500. As shown in FIGS. 4A and 4B, the umbrella 400 includes a base 410 disposed on the upper portion and an outer peripheral portion 420 disposed on the outer periphery of the base 410. In addition, from the viewpoint of heat dissipation, the cap 400 is preferably formed of a material having high thermal conductivity such as aluminum, but may be formed of a material other than metal such as resin.

  The base 410 is a part to which a plurality of light emitting units 500 are attached. Specifically, twelve light emitting units 500 are annularly attached to the lower surface of the base 410. Note that the plurality of light emitting units 500 are arranged in an annular shape in the present embodiment, but they may be arranged in an annular shape other than the annular shape, or may be arranged in a random manner instead of an annular shape. The detailed configuration of the light emitting unit 500 will be described later.

  A circular opening 411 is formed at the center position of the plurality of light emitting units 500 arranged in a ring shape. That is, twelve light emitting units 500 are annularly arranged around the opening 411 so as to surround the opening 411. Note that the shape of the opening 411 is not limited to a circular shape, and may be an elliptical shape or a rectangular shape.

  The outer peripheral portion 420 is a curved plate-like portion formed so as to spread downward from the outer periphery of the base 410 so as to surround the light emitting unit 500. The outer peripheral part 420 has a function of radiating heat generated from the light emitting unit 500. That is, the heat generated from the light emitting unit 500 is radiated to the outside through the base 410 and the outer peripheral portion 420.

  Next, a detailed configuration of the light emitting unit 500 will be described.

  FIG. 5 is a diagram showing a configuration of the light emitting unit 500 according to the embodiment of the present invention. Specifically, FIG. 5A is a plan view when the light emitting unit 500 is viewed from below. FIG. 5B is a cross-sectional view of the light-emitting unit 500, and is an enlarged view showing a cross-section of the light-emitting unit 500 when cut along the line B2-B2 of FIG. 4A. Although the lead wire 530 is not arranged on the B2-B2 line, the lead wire 530 is shown for reference in FIG. 5B so that the arrangement position of the lead wire 530 can be easily understood.

  The light emitting unit 500 is a COB (Chip On Board) type LED module in which a plurality of bare chips (LED chips) are directly mounted on a substrate 520, and the plurality of bare chips are collectively sealed with a phosphor-containing resin. . As shown in FIG. 5, the light emitting unit 500 includes an LED 510 and a substrate 520 provided with the LED 510.

  The LED 510 is an example of a semiconductor light emitting element, and a plurality of LED chips that emit single-color visible light (66 LED chips in the present embodiment) are arranged. Specifically, the LED 510 is formed by covering a plurality of blue light emitting LED chips that emit blue light when energized with a resin containing yellow phosphor particles. The LED 510 is mounted on the lower surface of the substrate 520 surrounded by a side wall (sealing bank) made of white silicon.

  The LED 510 is not limited to the above configuration that emits white light by a blue light emitting LED chip and a resin containing yellow phosphor particles. For example, a resin containing red phosphor particles and green phosphor particles is used. Alternatively, it may be configured to emit white light by combining this with a blue light emitting LED chip. The LED 510 may use an LED chip that emits a color other than blue, or may use a wavelength conversion material other than phosphor particles. In addition, the number of LED chips included in the LED 510 is appropriately determined according to the setting output of the lighting device 10.

  The substrate 520 is a rectangular LED mounting substrate made of, for example, aluminum for mounting the LED 510. The substrate 520 is attached to the lower surface of the base 410 of the umbrella 400 with the LED 510 mounted on the lower surface. In addition, although the attachment to the base 410 of the board | substrate 520 is performed by screwing, the said attachment is not limited to screwing, You may decide to fix with an adhesive agent etc. A pair of lead wires 530 are soldered to the substrate 520.

  The lead wire 530 is an electric wire for supplying electric power to the LED 510 provided in the lighting device 10. Specifically, the lead wire 530 is composed of, for example, a core wire made of copper and an insulating resin film that covers the core wire, and electrically connects the power supply circuit built in the main body 300 and the LED 510. ing. Thereby, AC power is supplied from the commercial power source to the power supply circuit, and constant current power is supplied to the LED 510 via the lead wire 530, whereby the LED 510 emits light.

  Next, a detailed configuration of the translucent cover 600 will be described.

  6A and 6B are diagrams showing the configuration of the translucent cover 600 according to the embodiment of the present invention. Specifically, (a) in FIG. 6A is a plan view when the translucent cover 600 is viewed from above, and (b) in FIG. 6A is when the translucent cover 600 is viewed from below. It is a top view. 6B is a cross-sectional view of the translucent cover 600 when cut along the line A3-A3 in FIG. 6A (b), and corresponds to the cross section in FIG. 3 (b). .

  Moreover, FIG. 7 is sectional drawing which shows the lens part 610 and the connection part 620 of the translucent cover 600 which concerns on embodiment of this invention. Specifically, FIG. 7 is an enlarged view showing a cross section of the lens portion 610 and the connecting portion 620 when cut along the line B3-B3 in FIG. 6A (b).

  The translucent cover 600 is an acrylic resin cover that is fixed to the base 410 of the umbrella 400 and protects the plurality of light emitting units 500. As shown in FIGS. 6A to 7, the translucent cover 600 includes a plurality of lens portions 610 and a connecting portion 620 that connects the plurality of lens portions 610. That is, the translucent cover 600 is a lens-integrated cover.

  The lens unit 610 is a lens that controls the light distribution of the light emitted from the light emitting unit 500, and has a shape protruding downward from the connecting unit 620. Specifically, the lens unit 610 is disposed so as to cover each of the plurality of light emitting units 500 corresponding to each of the plurality of light emitting units 500, and guides light emitted from the plurality of light emitting units 500 in a predetermined direction. .

  In the present embodiment, twelve circular (hemispherical) lens portions 610 are provided corresponding to twelve circular light emitting units 500. In addition, the plurality of lens portions 610 are arranged in an annular shape (in the present embodiment, an annular shape) corresponding to each of the plurality of annular light emitting units 500. Note that the number, shape, and arrangement of the lens units 610 are not limited to the above, and the number, shape, and arrangement corresponding to the number, shape, and arrangement of the light emitting units 500 are configured.

  Since the acrylic resin has a high transmittance, the lens unit 610 is preferably formed of an acrylic resin. However, from the viewpoint of heat resistance, the lens unit 610 may be made of a material that is resistant to thermal deformation, such as polycarbonate. good.

  The connecting portion 620 is a portion having a flat plate shape (disk shape) that connects a plurality of lens portions 610 arranged in an annular shape. Here, although the connection part 620 may be comprised separately from the some lens part 610, it is preferable that the some lens part 610 and the connection part 620 are integrally formed.

  Further, an opening 621 is formed in the connecting portion 620 at a position corresponding to the opening 411 of the base 410. That is, the connecting portion 620 has a circular opening 621 at the center position of the plurality of lens portions 610 arranged in an annular shape. Note that the shape of the opening 621 is not limited to a circular shape, and may be an elliptical shape or a rectangular shape, but is preferably a shape corresponding to the opening 411 of the base 410.

  In addition, two grooves 622a and 623a are formed in the connecting portion 620. Specifically, the groove portions 622a and 623a are formed on the protruding portions 622 and 623 protruding upward from the connecting portion 620.

  The protrusion 622 is a protrusion formed outside the opening 621 and inside a plurality of lens portions 610 arranged in an annular shape. Specifically, the protrusion 622 is a protrusion having a rectangular cross section (a cross section taken along a plane parallel to the Z axis) and is formed in an annular shape so as to be rectangular when viewed from above. ing.

  The groove portion 622 a is a groove for positioning the closing portion 710 by inserting the closing portion 710, and is formed on the upper surface of the protruding portion 622. That is, the groove portion 622a is a groove having a rectangular cross section (a cross section when cut along a plane parallel to the Z axis), and is formed in an annular shape so as to be rectangular when viewed from above. Thus, the groove 622a is formed outside the opening 621 and inside the plurality of lens portions 610 arranged in an annular shape.

  The protruding portion 623 is a protruding portion formed outside the plurality of lens portions 610 arranged in an annular shape. Specifically, the protrusion 623 is a protrusion having a rectangular cross section (a cross section taken along a plane parallel to the Z axis) and is formed in an annular shape so as to be circular when viewed from above. ing.

  The groove portion 623 a is a circular groove for inserting the closing portion 720 and positioning the closing portion 720, and is formed on the upper surface of the protruding portion 623. That is, the groove portion 623a is a groove having a rectangular cross section (a cross section when cut along a plane parallel to the Z axis), and is formed in an annular shape so as to be circular when viewed from above. Thus, the groove part 623a is formed in the position outside the some lens part 610 arrange | positioned cyclically | annularly.

  Note that the shapes of the protrusions 622 and the grooves 622a are not limited to a rectangular shape when viewed from above, and may be circular when viewed from above. Further, the shape of the protrusion 623 and the groove 623a is not limited to a circular shape in a top view, and may be a rectangular shape in a top view. Further, the cross-sectional shapes of the protrusions 622 and 623 and the grooves 622a and 623a are not limited to a rectangular shape, and may be a triangular shape or a semicircular shape. In addition, even if the groove portions 622a and 623a are not provided, if the closing portions 710 and 720 can be positioned because the groove portions are formed on the base 410, the groove portion 622a and 623a may not be formed in the connecting portion 620. It doesn't matter.

  Next, a detailed configuration of the blocking portions 710 and 720 will be described.

  FIG. 8A is a diagram showing a configuration of the blocking unit 710 according to the embodiment of the present invention. Moreover, FIG. 8B is a figure which shows the structure of the obstruction | occlusion part 720 which concerns on embodiment of this invention.

  The blocking portions 710 and 720 are silicone resin packings that block gaps between the cap 400 and the translucent cover 600. Specifically, the blocking portions 710 and 720 are disposed between the base 410 and the connecting portion 620 so as to close a gap between the base 410 of the umbrella 400 and the connecting portion 620 of the translucent cover 600. Is done. More specifically, the blocking portions 710 and 720 are disposed between the protrusions 622 and 623 formed on the connecting portion 620 and the base 410. Note that the blocking portions 710 and 720 may be formed of a resin other than silicon.

  The closing part 710 is a packing arranged in an annular shape between the connecting part 620 and the base 410 inside the plurality of lens parts 610 arranged in an annular shape. Specifically, the closing portion 710 is disposed between the groove portion 622 a formed in the protruding portion 622 of the connecting portion 620 and the base 410.

  As shown in FIG. 8A, the closing portion 710 is a rectangular annular packing corresponding to the shape of the groove portion 622a. Specifically, the blocking portion 710 is a packing having a shape in which resin tubes are connected in an annular shape. Note that the closing portion 710 is not limited to a rectangular annular packing, and may be a circular annular or rod-shaped packing, or may be used by inserting the packing into the groove portion 622a.

  The closing portion 720 is a packing that is arranged outside the plurality of lens portions 610 arranged in an annular shape and between the connecting portion 620 and the base 410. Specifically, the closing portion 720 is disposed between the groove portion 623 a formed in the protrusion 623 of the connecting portion 620 and the base 410.

  As shown in FIG. 8B, the closing portion 720 is a circular annular packing corresponding to the shape of the groove portion 623a. Specifically, the closing portion 720 is a packing having a shape in which resin tubes are connected in an annular shape. Note that the closing portion 720 is not limited to a circular annular packing, and may be a rectangular annular or rod-like packing, or may be used by inserting the packing into the groove portion 623a.

  Next, a configuration in which the lead wire 530 is disposed between the base 410 of the umbrella 400 and the connecting portion 620 of the translucent cover 600 will be described.

  FIG. 9 is a diagram showing a positional relationship between the base 410 of the umbrella 400 and the connecting portion 620 of the translucent cover 600 according to the embodiment of the present invention. Specifically, FIG. 9 is an enlarged view showing a cross section of the base 410 and the connecting portion 620 when cut along the line B1-B1 in FIG.

  As shown in FIG. 9, a space for arranging a lead wire 530 for supplying power to the light emitting unit 500 is formed between the connecting portion 620 and the base 410.

  In other words, the connecting portion 620 is formed with projecting portions 622 and 623 that protrude upward, and the projecting portions 622 and 623 and the base 410 come into contact with each other, so that there is a space between the connecting portion 620 and the base 410. Is formed. And the lead wire 530 is arrange | positioned in the said space.

  As described above, according to the lighting device 10 in the present embodiment, the translucent cover 600 that protects the light emitting unit 500 includes the plurality of lens units 610 corresponding to each of the plurality of light emitting units 500, and the plurality of the plurality of lens units 610. And a connecting portion 620 that connects the lens portion 610. That is, the translucent cover 600 of the light emitting unit 500 also serves as the lens of the light emitting unit 500. For this reason, according to the illuminating device 10, since the translucent cover 600 which is one component which has two functions of a lens and a cover is provided instead of two components of a lens and a cover, the light distribution of LED510 is controlled. In addition, it is possible to suppress a decrease in light transmittance from the LED 510 while preventing adhesion of dust or the like to the LED 510.

  In addition, an opening 311, an opening 411, and an opening 621 are formed in the bottom portion 310, the base 410, and the connecting portion 620 at the center position of the plurality of light emitting units 500 arranged in an annular shape. For this reason, the heat generated by the LED 510 can be dissipated from the opening 311, the opening 411, and the opening 621. Further, the heat can be radiated to the outside by the opening 320 formed on the side surface of the main body 300. Thereby, the fall of the luminous efficiency of LED510 by the said heat | fever can be suppressed.

  Moreover, since the illuminating device 10 includes the blocking portions 710 and 720 that block the gap between the base 410 and the connecting portion 620, dust and the like are prevented from entering the translucent cover 600 from the gap. It is possible to prevent dust and the like from adhering to the LED 510.

  Further, since the blocking portions 710 and 720 are annularly arranged inside and outside the plurality of lens portions 610 arranged in an annular shape so as to surround the plurality of lens portions 610, the plurality of lens portions 610 and the plurality of lens portions 610 are arranged. It is possible to prevent dust and the like from entering the light emitting unit 500.

  Moreover, since the space for arrange | positioning the lead wire 530 is formed between the connection part 620 and the base 410, the lead wire 530 can be arrange | positioned easily and the illuminating device 10 can be manufactured.

  Moreover, since the several lens part 610 and the connection part 620 are integrally formed, the number of parts of the translucent cover 600 can be reduced and the illuminating device 10 can be manufactured easily.

  The lighting device 10 according to the embodiment of the present invention has been described above, but the present invention is not limited to this embodiment.

  That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in the above-described embodiment, the closing portions 710 and 720 are resin packing, but the closing portion 710 is not limited to the resin packing. For example, the closing portions 710 and 720 may be metal packing, or may be a portion having elasticity formed integrally with the translucent cover 600 or the base 410. Moreover, you may decide that the illuminating device 10 is not provided with any one or both of the obstruction | occlusion parts 710 and 720.

  In the above embodiment, the light emitting unit 500 has a COB type configuration in which an LED chip is directly mounted on the substrate 520. However, the present invention is not limited to this, and for example, a SMD (Surface Mount Device) type configuration is used. It doesn't matter. Here, the SMD type configuration means that an LED chip is mounted in a resin-molded cavity and a phosphor-containing resin is enclosed in the cavity, and the LED element is used. It is an LED module configured by mounting a plurality on a substrate.

  In the above embodiment, the LED is exemplified as the semiconductor light emitting element. However, a semiconductor light emitting element other than the LED, such as a semiconductor laser, may be used.

  INDUSTRIAL APPLICABILITY The present invention can be applied to an illuminating device or the like that can control the light distribution of an LED and can prevent a decrease in the transmittance of light from the LED while preventing dust and the like from adhering to the LED.

DESCRIPTION OF SYMBOLS 10 Illuminating device 100 Round seat 200 Hanging pipe 300 Main body 310 Bottom face part 311 and 320 Opening part 400 Casa 410 Base 411 Opening part 420 Outer part 500 Light emitting unit 510 LED
520 Substrate 530 Lead wire 600 Translucent cover 610 Lens portion 620 Connecting portion 621 Opening portion 622, 623 Protruding portion 622a, 623a Groove portion 710, 720 Closure portion

Claims (6)

A plurality of light emitting units each having a semiconductor light emitting element and a substrate provided with the semiconductor light emitting element;
A base to which the plurality of light emitting units are attached;
A cover fixed to the base and protecting the plurality of light emitting units;
The cover is
Corresponding to each of the plurality of light emitting units, a plurality of lens portions arranged to cover each of the plurality of light emitting units and guiding light emitted from the plurality of light emitting units in a predetermined direction;
An illuminating device having a connecting portion that connects the plurality of lens portions. The plurality of light emitting units are arranged in an annular shape,
The base has an opening formed at a central position of the plurality of light emitting units arranged in an annular shape,
The lighting device according to claim 1, wherein the connection portion has an opening formed at a position corresponding to the opening of the base. further,
A closing portion for closing a gap between the base and the cover;
The lighting device according to claim 1, wherein the closing portion is disposed between the base and the connecting portion so as to close a gap between the base and the connecting portion. The connecting portion connects the plurality of lens portions arranged in an annular shape corresponding to each of the plurality of light emitting units arranged in an annular shape,
The illuminating device according to claim 3, wherein the closing part is arranged inside and outside the plurality of lens parts arranged in an annular shape and arranged in an annular shape between the connecting part and the base. The blocking portion is disposed on a protrusion formed on the connecting portion,
The lighting device according to claim 3, wherein a space for arranging a lead wire for supplying power to the light emitting unit is formed between the connecting portion and the base. The connecting portion has a flat plate shape,
The lens part has a shape protruding from the connecting part,
The lighting device according to any one of claims 1 to 5, wherein the plurality of lens portions and the connecting portion are integrally formed.

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