JP2011222514A - Led lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting apparatus that achieves uniform lighting by adjusting refraction angle for each of a plurality of LEDs with lens arranged on a substrate.SOLUTION: The LED lighting apparatus includes: an LED substrate 30 on which a plurality of LED light sources 31 are arranged; a housing plate 26 to which the LED substrate 30 is attached; a lighting cover lens unit 1 attached to the housing plate 26 in a manner allowing the LED substrate 30 to be accommodated; a light input element 22 protruded and formed at a position of the LED light sources 31 on one surface of the lighting cover lens unit 1; and deflection lens elements 5 to 18 protruded and formed on the other surface of the lighting cover lens unit 1 in a shape integrated with the light input element 22.

Description

  The present invention relates to an LED (Light Emitting Diode) illumination device. Specifically, the present invention relates to an LED illumination device using an LED light source arranged on an LED substrate.

Conventionally, what was described, for example in patent document 1 as this kind of LED lighting apparatus is known.
Specifically, in the LED lighting device described in Patent Document 1, a plurality of LEDs 101 are arranged on a substrate 102 as shown in FIG. A convex lens 103 for orienting the light emitted from the LED 101 is provided on each LED 101.

  In the LED illumination device having such a configuration, light emitted from the LEDs is distributed at a wide angle by the convex lenses provided on the individual LEDs arranged on the substrate.

  Moreover, as shown in FIG. 13, the outdoor illuminating lamp described in Patent Document 2 includes a plurality of optical modules with an optical module in which one LED light source 110 as a light source and one convex lens 111 are combined as one unit. Are configured as a unit.

  Furthermore, the mounting angle and the number of optical modules are adjusted so as to satisfy the target irradiation performance.

JP 2010-92700 A

JP 2009-245621 A

  However, in the LED illumination device described in Patent Document 1 described above, since the emitted light from each LED is equally refracted from each lens of the lens unit, the illuminance at the center is highest from the lens unit, The illuminance gradually decreases as it goes to the section. For this reason, there is a problem that uniform illumination cannot be performed on the irradiated surface when an attempt is made to widen the irradiation range.

  Moreover, in the outdoor illuminating lamp described in Patent Document 2 described above, since a convex lens is arranged in a curved shape with a predetermined curvature in order to obtain uniform illuminance, the LED light source also corresponds to the convex lens. Will be placed on the curve. Therefore, since the convex lens and the LED light source cannot be arranged on a straight line, there is a problem that the illumination lamp cannot be thinned.

  The present invention has been devised in view of the above points, and focuses light emitted from a plurality of LED light sources arranged on a substrate and deflects outgoing light in a predetermined direction. Therefore, an object of the present invention is to provide an LED lighting device that can realize uniform illumination.

  In order to achieve the above object, an LED lighting device according to the present invention includes an LED substrate on which a plurality of LED light sources are arranged, a housing plate to which the LED substrate is attached, and an LED substrate that can be stored in the housing plate. An illumination cover lens part attached to the light cover, a light input element projectingly formed on one surface of the illumination cover lens part at the position of the LED light source, and the light input element on the other surface of the illumination cover lens part And a deflecting lens element formed integrally and projecting.

  Here, a light input element projectingly formed on one surface of the illumination cover lens portion at the position of the LED light source, and a deflection lens projectingly formed integrally with the light input element on the other surface of the illumination cover lens portion By the element, the light emitted from the LED light source is focused in the light input element, and the light is emitted from each deflecting lens element in a predetermined direction, thereby enabling uniform illumination.

  Moreover, when the structure in which the hollow part which can accommodate an LED light source is employ | adopted as a light input element, it can focus in a light input element, without leaking the light radiate | emitted from the LED light source.

  In addition, when the light input element adopts a spherical shape having a curvature that can be deflected in the direction of the deflecting lens element, the light focused in the light input element is reliably emitted from the deflecting lens element. can do.

  Further, when the deflecting lens element adopts a configuration in which the light exit surface is formed in an inclined shape, a Fresnel lens, or a prism shape, the deflecting lens element is irradiated with light emitted from each deflecting lens element at a predetermined angle. The surface can be irradiated uniformly.

  In addition, in the case of adopting a configuration in which a plurality of support bar portions project from the inside of the illumination cover lens portion and a positioning hole into which the tip of the support bar portion can be inserted is provided in the LED substrate, The light input element can be reliably positioned with respect to the LED light source arranged on the substrate.

  In addition, when a configuration in which at least one spare LED light source is provided in addition to the LED light source on the LED substrate is employed, the illuminance is maintained by operating the spare LED light source when one of the LED light sources fails. can do.

  In addition, when a configuration in which a sealing material made of an elastic body is interposed between the illumination cover lens unit and the housing plate, water can be prevented from entering the illumination cover lens unit.

  In addition, when the LED board, housing plate, and illumination cover lens part have a substantially triangular or trapezoidal configuration, various LED modules can be realized by combining these LED boards. can do.

  According to the LED illumination device of the present invention, it is possible to perform uniform illumination by converging light emitted from a plurality of LED light sources arranged on a substrate and deflecting emitted light in a predetermined direction. To do.

It is a three-dimensional schematic diagram for demonstrating an example of the illumination cover lens part to which this invention is applied. It is a schematic diagram for demonstrating an example of the assembly of the illumination cover lens part of the LED lighting apparatus to which this invention is applied. It is a three-dimensional schematic diagram for demonstrating an example of the back surface side of the illumination cover lens part of the LED lighting apparatus to which this invention is applied. It is a three-dimensional schematic diagram for demonstrating an example of the housing plate for attaching to the back surface side of the illumination cover lens part of the LED lighting apparatus to which this invention is applied. It is a schematic diagram for demonstrating an example of the LED board of the LED lighting apparatus to which this invention is applied. It is a cross-sectional schematic diagram for demonstrating the internal structure of the LED lighting apparatus to which this invention is applied. It is a schematic diagram for demonstrating the refractive action of the light which injects into the light input element of the LED lighting apparatus to which this invention is applied. It is a side surface schematic diagram for demonstrating an example of the lighting fixture with which the LED lighting apparatus to which this invention is applied is attached. It is a schematic diagram for demonstrating the other example of the LED board of the LED lighting apparatus to which this invention is applied. It is a schematic diagram for demonstrating the form which combined multiple LED board | substrates of the LED illuminating device to which this invention is applied. It is a schematic diagram for demonstrating the other shape of the LED board of the LED lighting apparatus to which this invention is applied. It is a schematic diagram for demonstrating an example of the conventional LED lighting apparatus. It is a schematic diagram for demonstrating the other example of the conventional LED lighting apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings to provide an understanding of the present invention.

  FIG. 1 is a three-dimensional schematic diagram for explaining an example of an illumination cover lens unit to which the present invention is applied. FIG. 2 (FIG. 2 (a)) shows a three-dimensional schematic diagram for explaining an example of a light beam deflecting lens body of the illumination cover lens part of the LED illumination device to which the present invention is applied, and FIG. 2 (b) shows the present invention. FIG. 2 is a three-dimensional schematic diagram for explaining an example of a mounting frame of an illumination cover lens part of an LED illumination device to which the above-mentioned LED is applied.) Is an example of assembling an illumination cover lens part of an LED illumination device to which the present invention is applied. FIG.

  The illumination cover lens unit 1 shown here includes a light beam deflection lens body 2 and an attachment frame 3 to which the light beam deflection lens body 2 is attached.

  In the light beam deflection lens body 2, deflection lens elements 5 to 18 each having a different light beam deflection function are formed on a plate 4 formed in a substantially triangular shape.

  The mounting frame 3 has an annular mounting flange portion 19 in which an opening 36 having the same shape as the light beam deflecting lens body 2 is formed on the inner side thereof, and a right-angled shape along the inner peripheral edge of the mounting flange portion 19. It is comprised from the web 37 protrudingly provided.

  Further, a plurality of insertion holes 20 are provided in the attachment flange portion 19 having a certain width so as to surround the periphery of the web 37.

  A fitting step 21 for fitting the plate 4 is formed on the inner peripheral edge of the upper end of the web 37.

  Here, the opening 36 of the mounting frame 3 is covered with the plate 4 of the light beam deflecting lens body 2 so that the peripheral edge of the plate 4 is joined to the fitting step 21 at the upper end of the web 37 and joined together. The illuminated cover lens portion 1 is formed.

  FIG. 3 is a three-dimensional schematic diagram for explaining the back side of the light beam deflecting lens body of the LED lighting device to which the present invention is applied, and FIG. 4 is for attaching to the back side of the illumination cover lens part of the LED lighting device to which the present invention is applied. The three-dimensional schematic diagram for demonstrating an example of this housing plate is shown.

  Here, as shown in FIG. 3, a conical shape integrated with the deflection lens elements 5 to 18 shown in FIG. 1 is formed on one surface (back side in this embodiment) of the light beam deflection lens body 2. Fourteen light input elements 22 are formed to project.

  The light input element 22 has a recess 23 at the top where an LED element (not shown) can be inserted. The inner surface of the recess 23 is formed in a hemispherical shape.

  Further, four support rod portions 24 are arranged between the respective light input elements 22. Further, a groove 25 is formed between the outer peripheral edge of the web 37 of the mounting frame 3 and the mounting flange 19.

  As shown in FIG. 4, the housing plate 26 has substantially the same shape as the mounting frame 3, and mounting holes 27 are formed at positions corresponding to the insertion holes 20 provided in the mounting flange portion 19 of the mounting frame 3. Yes.

  Therefore, when the housing plate 26 is attached to the attachment frame 3, the annular elastic sealing material 28 formed of a rubber material or the like is fitted into the groove portion 25 of the attachment frame 3, and the upper end protrudes from the groove portion 25. To overlap the housing plate 26.

  And it fastens and fixes with fastening members (not shown), such as a volt | bolt and a nut, in the attachment hole 27 corresponding to the insertion hole 20 provided in the attachment flange part 19 of the attachment frame 3. FIG.

  FIG. 5 is a schematic view for explaining an example of the LED substrate of the LED lighting device to which the present invention is applied, and FIG. 6 is a schematic cross-sectional view for explaining the internal structure of the LED lighting device to which the present invention is applied.

  The LED substrate 30 shown here has a plurality of LED light sources 31 arranged on a substrate formed of PCB (Print circuit Board).

  The LED light source 31 is arranged at a position corresponding to the light input element 22 arranged on the back surface side of the illumination cover lens unit 1, and a lens 33 is provided integrally with each LED element 32.

  This type of LED light source includes an anode connection, a cathode connection, and a cup (not shown) in which an LED crystal (light emitting portion) is inserted.

  The LED crystal is connected to the anode connection by a bonding wire, and is further formed of plastic to protect the cathode connection, the anode connection, and the LED crystal.

  This plastic forms a lens and the light emitted by the LED crystal is emitted as widely as possible.

  The LED board 30 is provided with an electrical connector 34, and the electrical connector 34 is connected to all the LED light sources 31 so as to supply necessary electricity.

  Further, the tip of the support bar 24 can be inserted on the LED substrate 30 at a position corresponding to the support bar 24 disposed on the back side of the illumination cover lens unit 1 between the LED light source 31 and the LED light source 31. Four positioning holes 35 are provided.

In addition, three stop holes 39 for fixing the bottom surface of the LED substrate 30 to the housing plate 26 with screws or the like (not shown) are provided.
In this case, in order to quickly dissipate heat that may occur in the LED substrate 30 when the LED light source 31 is started up, it is desirable that the housing plate 26 be configured as a heat dissipation plate, a cooling rib, or the like that significantly improves heat dissipation. .

  In the LED lighting device 40 having such a configuration, the LED board 30 is attached to a fixed position on the housing plate 26 as shown in FIG.

  And the illumination cover lens part 1 is attached on the housing plate 26 in the state which inserted the front-end | tip of the support bar part 24 arrange | positioned in the positioning hole 35 of the LED board 30 at the back surface side of the illumination cover lens part 1. FIG.

  Here, all the LED light sources 31 arranged on the LED substrate 30 are in a state where they enter the recess 23 of the light input element 22 formed on the back side of the illumination cover lens unit 1.

  Furthermore, the attachment frame 3 and the housing plate 26 are fastening members (not shown) such as bolts and nuts in the attachment holes 27 of the housing plate 26 corresponding to the insertion holes 20 provided in the attachment flange portion 19 of the attachment frame 3. ).

  In this case, the annular elastic sealing material 28 is fitted into the groove 25 of the mounting frame 3 so that the space between the housing plate 26 and the illumination cover lens unit 1 is sealed.

  FIG. 7 is a schematic diagram for explaining the refractive action of light entering the light input element of the LED lighting device to which the present invention is applied.

  Here, the light emitted from the LED 32 of the LED light source 31 is widely emitted into the recess 23 through the lens 33 within a range of about 180 degrees.

  Then, the light A emitted through the lens 33 enters the light input element 22 from the recess 23 and is reflected within the boundary wall 38 of the light input element 22 so that each light A is directed toward the deflection lens element. Are deflected in parallel.

  In addition, the light A uniformly enters each of the deflecting lens elements 5 to 18 and is deflected by the defined refractive index of each deflecting lens element 5 to 18 to be emitted.

  FIG. 8 is a schematic side view for explaining an example of a lighting fixture to which the LED lighting device to which the present invention is applied is attached.

  Here, the luminaire 41 includes a stand part 42 whose one end is joined to the surface of the housing plate 26 of the LED lighting device 40, and a connecting part 43 that is integrally attached to the other end of the stand part 42. Yes.

  Further, the stand part 42 is joined to the surface of the housing plate 26, so that heat from the LED substrate (not shown) rises in the temperature of the illumination cover lens part 1 due to heat conduction from the housing plate 26 to the stand part 42. Can be suppressed.

  Moreover, the connection part 43 is comprised so that attachment to the support | pillar of a street lamp is possible by connection means, such as a male screw (not shown).

  In the LED illumination device of the present invention having the above-described configuration, the deflection lens elements 5 to 18 disposed in the illumination cover lens unit 1 are configured to be deflectable in different directions within a certain range.

  Accordingly, the uniform luminous flux emitted from the deflecting lens elements 5 to 18 can obtain uniform brightness within the irradiated range by being deflected in the respective arrow directions.

  FIG. 9 (FIG. 9A) shows a three-dimensional schematic diagram for explaining another example of the LED substrate of the LED lighting apparatus to which the present invention is applied, and FIG. 9B shows the LED lighting to which the present invention is applied. The schematic diagram for demonstrating the effect | action by the other example of the LED board of an apparatus is shown.) Is a schematic diagram for demonstrating the other example of the LED board of the LED lighting apparatus to which this invention is applied.

  The LED substrate 30 </ b> A shown here has a configuration in which a plurality of LED light sources 31 are arranged on a substrate formed of PCB (Print circuit Board).

  The LED light source 31 is arranged at a position corresponding to the LED illumination device to which the present invention is applied, which is arranged on the back side of the illumination cover lens unit 1, and a lens 33 is provided integrally with each LED element 32. Yes.

  This type of LED light source includes an anode connection, a cathode connection, and a cup (not shown) in which an LED crystal (light emitting portion) is inserted.

  The LED crystal is connected to the anode connection by a bonding wire, and is made of plastic to protect the cathode connection, the anode connection, and the LED crystal.

  This plastic forms a lens and the light emitted by the LED crystal is emitted as widely as possible.

  Here, a plurality of spare LED light sources 31A as spare light sources of the plurality of LED light sources 31 are arranged on the LED substrate 30A.

  The spare LED light source 31A is configured such that each spare LED light source 31A can operate when one of the LED light sources 31 fails.

  In addition, an electrical connector 34 is provided on the LED substrate 30A, and the electrical connector 34 is connected to all the LED light sources 31 and the auxiliary LED light sources 31A so as to supply necessary electricity.

  The LED board 30A having such a configuration is attached to a fixed position on the housing plate 26 as shown in FIG.

  All the LED light sources 31 arranged on the LED substrate 30 </ b> A are in a state where they enter the recess 23 of the light input element 22 formed on the back surface side of the illumination cover lens unit 1.

  Here, the light emitted from the LED 32 of the LED light source 31 is widely emitted into the recess 23 through the lens 33 within a range of about 180 degrees.

  The light A emitted through the lens 33 in this way enters the light input element 22 from the depression 23 and is reflected within the boundary wall 38 of the light input element 22 to each direction of the deflecting lens element. The light A is deflected in parallel.

  As a result, the light A entering the deflecting lens elements 5 to 18 is uniformly incident, deflected by the refraction defined by the deflecting lens elements 5 to 18 and emitted.

  When one of the LED light sources 31 breaks down, the spare LED 31A is activated, and the light A emitted from the spare LED 31A enters the surrounding light input element 22.

  The light intensity of the failed LED light source 31 can be replenished by being reflected within the boundary wall 38 of the light input element 22 and being emitted toward the deflecting lens element.

  FIG. 10 (FIG. 10 (a)) shows a schematic diagram for explaining an example of the combination of LED substrates of the LED lighting device to which the present invention is applied, and FIG. 10 (b) shows the LED lighting device to which the present invention is applied. The schematic diagram for demonstrating the other example of the combination of LED board | substrate is shown.) Is a schematic diagram for demonstrating the form which combined multiple LED board | substrates of the LED illuminating device to which this invention is applied.

  Here, as shown in FIG. 10A, a total of six LED substrates 30 formed in a substantially triangular shape are combined so that their isosceles sides are in contact with each other. Thereby, it becomes a combination of the LED board 30 by polygon shape as a whole, and it becomes possible to implement | achieve the LED module which has high brightness | luminance.

  In addition, as shown in FIG. 10 (b), an LED module having an elongated line is realized by combining LED substrates 30 formed in a substantially triangular shape so that their directions are opposite to each other and their isosceles sides are in contact with each other. It becomes possible to do.

  FIG. 11 is a schematic view for explaining another shape of the LED substrate of the LED lighting device to which the present invention is applied.

  In the LED substrate 30B shown here, a plurality of LED light sources 31 are arranged on a substrate formed of PCB (Print circuit Board) formed in a trapezoidal shape.

  By combining the two LED substrates 30B so that their bottoms are in contact with each other, a hexagonal LED module having high luminance can be realized.

  Further, six LED substrates 30B can be combined in a ring shape as described in detail in FIG. 10 (a), or can be combined in an elongated line shape as described in detail in FIG. 10 (b).

  In this embodiment, the case where the light input element is formed with a recess that can accommodate the LED light source will be described in detail. However, it is not always necessary to form the recess.

  For example, the LED light source may be arranged so as to be in contact with the light input element, but it is preferable to form the depression in that the emitted light from the LED light source is focused without omission.

  In this embodiment, the light input element will be described in detail for a spherical shape having a curvature that can be deflected in the direction of the deflecting lens element. However, the light input element is not necessarily required to have a spherical shape.

  For example, the light emitted from the LED light source may have a shape capable of focusing, but in the point that high illuminance can be obtained by deflecting all the light in the direction of the deflecting lens element, A spherical shape having a deflectable curvature is preferable.

  In this embodiment, the deflecting lens element will be described in detail with respect to a case where the light exit surface is formed in an inclined shape, a Fresnel lens, or a prism shape, but it is not necessarily formed in such a form. There is no need to do.

  For example, the light exit surfaces are preferably formed in an inclined shape, a Fresnel lens, or a prism shape in that each deflection lens element is provided with a deflection function so that the illumination surface can be illuminated uniformly.

  Further, in this embodiment, a plurality of support bar portions project from the inside of the illumination cover lens portion, and the LED board is provided with a positioning hole in which the end of the support rod portion can be inserted. However, such a configuration is not necessarily required.

  For example, any mechanism can be used as long as the light input element and the LED light source can be easily positioned, but the tip of the support bar can be inserted into the LED substrate in that it can be easily and reliably positioned. It is preferable to provide a positioning hole.

  In the present embodiment, the case where a sealing material made of an elastic body is interposed between the illumination cover lens portion and the housing plate will be described in detail, but such a configuration is not necessarily required.

  For example, the illumination cover lens portion and the housing plate may be directly joined, but the illumination cover lens portion is made of an elastic material in that the illumination cover lens portion can be attached and detached and intrusion into water can be prevented. It is preferable to interpose a sealing material.

  Further, in this embodiment, the LED substrate, the housing plate, and the illumination cover lens part will be described in detail when the substantially triangular shape or the substantially trapezoidal shape is used. There is no need to do.

  For example, a circular shape or a quadrangular shape may be used. However, an LED module having a shape according to the situation can be realized by combining each of them, and may be a substantially triangular shape or a substantially trapezoidal shape. preferable.

DESCRIPTION OF SYMBOLS 1 Illumination cover lens part 2 Light beam deflection lens main body 3 Mounting frame 4 Plates 5-18 Deflection lens element 19 Mounting flange part 20 Insertion hole 21 Fitting step part 22 Light input element 23 Depression part 24 Support rod part 25 Groove part 26 Housing plate 27 Mounting hole 28 Elastic sealing material 30, 30A, 30B LED board 31 LED light source 31A Preliminary LED light source 32 LED element 33 Lens 34 Electrical connector 35 Positioning hole 36 Opening 37 Web 38 Boundary wall 39 Stop hole 40 LED device 41 Lighting fixture 42 Stand Part 43 connecting part

Claims (8)

An LED substrate on which a plurality of LED light sources are arranged;
A housing plate to which the LED substrate is attached;
An illumination cover lens portion in which an LED substrate can be stored in the housing plate;
A light input element protrudingly formed at the position of the LED light source on one surface of the illumination cover lens part;
An LED illumination device comprising: a deflection lens element formed integrally with the light input element on the other surface of the illumination cover lens portion. The LED illumination device according to claim 1, wherein the light input element is formed with a recess capable of accommodating an LED light source. The LED illumination device according to claim 1, wherein the light input element has a spherical shape having a curvature that can be deflected in a direction of a deflecting lens element. The LED illumination device according to claim 1, wherein the light exit surface of the deflection lens element is formed in an inclined shape, a Fresnel lens, or a prism shape. A plurality of support bar portions project from the inside of the illumination cover lens portion, and a positioning hole into which the tip of the support bar portion can be inserted is provided in the LED substrate. The LED illumination device according to claim 3 or claim 4. The LED lighting device according to claim 1, 2, 3, 4, or 5, wherein at least one auxiliary LED light source is provided on the LED substrate in addition to the LED light source. The LED illumination according to claim 1, claim 2, claim 3, claim 5, claim 6, or claim 6, wherein a sealing material made of an elastic body is interposed between the illumination cover lens part and the housing plate. apparatus. The LED substrate, the housing plate, and the illumination cover lens portion are formed in a substantially triangular shape or a substantially trapezoidal shape. Claims 1, 2, 3, 4, 5, 6, or 6. 8. The LED lighting device according to 7.

Images