JP2015060631A - Led light bulb - Google Patents

Led light bulb Download PDF

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Publication number
JP2015060631A
JP2015060631A JP2013191589A JP2013191589A JP2015060631A JP 2015060631 A JP2015060631 A JP 2015060631A JP 2013191589 A JP2013191589 A JP 2013191589A JP 2013191589 A JP2013191589 A JP 2013191589A JP 2015060631 A JP2015060631 A JP 2015060631A
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led
light
light source
lens body
bulb
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Japanese (ja)
Inventor
征貴 百々
Masataka Momo
征貴 百々
明 石倉
Akira Ishikura
明 石倉
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Ushio Denki KK
Ushio Inc
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Ushio Denki KK
Ushio Inc
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Priority to JP2013191589A priority Critical patent/JP2015060631A/en
Publication of JP2015060631A publication Critical patent/JP2015060631A/en
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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent a gap between LED chips from occurring on an irradiation surface in an LED light bulb having a plurality of LED chips as a light source.SOLUTION: An LED light bulb comprises: a light source having a plurality of LED chips formed on a substrate; a lens body which is arranged in a radiation direction of the light source, and in which a recess part for covering the light source part is formed; and a casing for accommodating the light source and the lens body. An inner surface of the recess part of the lens body has an inclined structure for diffusing radiation light of the LED chips, and the inclined structure is formed so that the vertical radiation light of the LED chips directly enters.

Description

この発明はＬＥＤ電球に関する。特に、ＬＥＤチップを備えるハロゲン電球代替のＬＥＤ電球に関する。   The present invention relates to an LED bulb. In particular, the present invention relates to an LED bulb that replaces a halogen bulb provided with an LED chip.

従来、ＬＥＤ電球として、発光源であるＬＥＤチップと、当該ＬＥＤチップを内部に収容する導光ブロックと、これらを取り囲むとともに口金を有するケーシングからなる構造が知られている（特許文献１）。   2. Description of the Related Art Conventionally, as an LED bulb, a structure is known that includes an LED chip that is a light source, a light guide block that houses the LED chip, and a casing that surrounds these and has a base (Patent Document 1).

これらＬＥＤ電球は、従来のフィラメントを有するハロゲン電球の代替光源として用いられるものであり、すなわち、ハロゲン電球が装着されていたソケットに同様に装着される。また、ハロゲン電球が装着されていた照明器具との関係においてＬＥＤ電球の寸法はハロゲン電球と同じにしなければならない。さらに、ＬＥＤチップも日進月歩で進化しており、より高効率かつ明るいものが開発されつつある。つまり、最新のＬＥＤチップを光源としたＬＥＤ電球を使う場合は、全体の寸法や形状は同じとしつつ、かつ、従前の光源と同じ発散角、温度条件などを満たさなければならない。   These LED bulbs are used as an alternative light source of a halogen bulb having a conventional filament, that is, are similarly attached to a socket in which a halogen bulb is attached. Moreover, the dimension of the LED bulb must be the same as that of the halogen bulb in relation to the lighting fixture in which the halogen bulb is mounted. Furthermore, LED chips are also evolving rapidly, and more efficient and brighter ones are being developed. In other words, when using an LED bulb using the latest LED chip as a light source, the overall dimensions and shape must be the same, and the same divergence angle and temperature conditions as the conventional light source must be satisfied.

さらに近年、ＬＥＤ光源として、図６に示すような、４つのＬＥＤチップを同一基板に装着させたものが出現している。図６（ａ）はＬＥＤ光源の全体構造を示し、（ｂ）は基板上におけるＬＥＤチップは配置状態と示す。この光源を、従前のＬＥＤ電球に置き換えた場合、ＬＥＤチップ同志の隙間部分が、照射領域において十字型として現れてしまう問題が発生した。   In recent years, an LED light source in which four LED chips are mounted on the same substrate as shown in FIG. 6 has appeared. FIG. 6A shows the overall structure of the LED light source, and FIG. 6B shows the LED chip on the substrate in an arrangement state. When this light source was replaced with a conventional LED bulb, there was a problem that the gap between the LED chips appeared as a cross in the irradiation area.

特開２０１１−０１４５０５号公報JP 2011-014505 A

この発明が解決する課題は、複数のＬＥＤチップを光源としたＬＥＤ電球において、ＬＥＤチップ同志の隙間が照射面において発生しないことである。   The problem to be solved by the present invention is that, in an LED bulb using a plurality of LED chips as light sources, a gap between the LED chips does not occur on the irradiation surface.

上記課題を解決するために、この発明に係るＬＥ電球は、複数のＬＥＤチップが基板に形成された光源と、この光源の放射方向に配置されるとともに、光源部分を覆う凹部が形成されたレンズ体と、光源およびレンズ体を収容するケーシングとよりなるＬＥＤ電球において、前記レンズ体の凹部内面は、前記ＬＥＤチップの放射光を拡散させる傾斜構造を有し、この傾斜構造はＬＥＤチップの垂直放射光が直接入射するように形成されていることを特徴とする。   In order to solve the above-described problems, a LE light bulb according to the present invention includes a light source in which a plurality of LED chips are formed on a substrate, a lens in which a concave portion that covers the light source portion is formed while being arranged in the radiation direction of the light source. In an LED bulb comprising a body and a casing that houses a light source and a lens body, the inner surface of the concave portion of the lens body has an inclined structure that diffuses the emitted light of the LED chip, and this inclined structure is a vertical emission of the LED chip. It is formed so that light may enter directly.

さらに、本発明に係るＬＥＤ電球は、前記光源は同一基板に４つのＬＥＤチップが互いに間隔をもって配置されるとともに、当該間隔が全体として十字型を形成するようになっていることを特徴とする。   Furthermore, the LED light bulb according to the present invention is characterized in that the light source has four LED chips arranged on the same substrate at intervals, and the interval forms a cross shape as a whole.

本発明は上記構成を有することにより、複数のＬＥＤチップを同一基板に配置された構造であって、従来のハロゲン電球あるいは従来のＬＥＤ電球と同一形状、同一寸法のケーシングを有するとともに、かつ、従来のハロゲン電球あるいは従来のＬＥＤ電球と同様の光学性能を有する。具体的には、ＬＥＤチップ同志の隙間が照射領域において明示的に表れることがない。   The present invention has a structure in which a plurality of LED chips are arranged on the same substrate by having the above-described configuration, and has a casing having the same shape and the same dimensions as a conventional halogen light bulb or a conventional LED light bulb. Optical performance similar to that of conventional halogen bulbs or conventional LED bulbs. Specifically, the gap between the LED chips does not appear explicitly in the irradiation region.

本発明に係るＬＥＤ電球の全体構造を示す。1 shows the overall structure of an LED bulb according to the present invention. 本発明に係るＬＥＤ電球の発光部の内部構造を示す。The internal structure of the light emission part of the LED bulb which concerns on this invention is shown. 本発明に係るＬＥＤ電球の技術的な原理を説明するための図を示す。The figure for demonstrating the technical principle of the LED bulb which concerns on this invention is shown. 本発明を説明するうえでの比較構造を示す。A comparative structure for explaining the present invention is shown. 本発明をさらに説明するための構造を示す。The structure for further explaining the present invention is shown. 複数のＬＥＤチップを搭載した光源と示す。The light source is equipped with a plurality of LED chips.

図１は本発明に係るＬＥＤ電球の一実施例を示す。ＬＥＤ電球１は、発光部１０、電源部２０、口金部３０より構成されており、全体として一つのケーシングをなすとともに、それぞれの内部に各種部品が内蔵されている。   FIG. 1 shows an embodiment of an LED bulb according to the present invention. The LED bulb 1 includes a light emitting unit 10, a power source unit 20, and a base unit 30. The LED bulb 1 forms a casing as a whole, and various components are incorporated in each casing.

電源部２０はＬＥＤチップに電力を供給するための電源素子（例えば、電解コンデンサやコイル）と、これらの電源素子が搭載される電源基板が内蔵されている。   The power supply unit 20 includes a power supply element (for example, an electrolytic capacitor and a coil) for supplying power to the LED chip and a power supply board on which these power supply elements are mounted.

ソケット部３０はＥ１１口金と同じ構造であり、従来のハロゲン電球や従来のＬＥＤ電球が装着するものである。   The socket part 30 has the same structure as the E11 base, and is mounted with a conventional halogen bulb or a conventional LED bulb.

図２は発光部１０の内部構造を示す。レンズ体１２はポリカーボネイトなど透光性材料の中実部材からなり、全体として略半球体構造をなす。レンズ体１２の頂点には凹部１３が形成されており、この凹部１３の中に光源１１が覆われる状態で配置されている。光源１１は複数のＬＥＤチップ１４が基板１５に搭載されており、各ＬＥＤチップ１４を全体として覆う樹脂部材１６が水滴状に形成されている。   FIG. 2 shows the internal structure of the light emitting unit 10. The lens body 12 is made of a solid member of a translucent material such as polycarbonate, and has a substantially hemispherical structure as a whole. A concave portion 13 is formed at the apex of the lens body 12, and the light source 11 is disposed in the concave portion 13 so as to be covered. The light source 11 includes a plurality of LED chips 14 mounted on a substrate 15, and a resin member 16 that covers each LED chip 14 as a whole is formed in a water droplet shape.

図３は本発明の特徴を技術的に説明するためのものであり凹部１３の模式的構造を示す。ＬＥＤチップ１４から垂直方向へ放射される光Ｌ１は、レンズ体１２の凹部１３に対する傾斜壁１３１にて屈折する。屈折光Ｌ２はレンズ体１２を出射するときにおいても、何らかの反射、屈折を伴うことで、レンズ体１２からの放射光は、ＬＥＤチップ１４同志の間隔が目視できないように対象面において照射される。つまり、ＬＥＤチップ１４の放射光がレンズ体１２の内部を直進する成分を極力少なくして、レンズ体１２に最初に入射するときに屈折するように構成することによって、レンズ体１２への入射光は、他のＬＥＤチップの入射光を交差するようになる。   FIG. 3 is a view for technically explaining the characteristics of the present invention, and shows a schematic structure of the recess 13. The light L1 emitted in the vertical direction from the LED chip 14 is refracted by the inclined wall 131 with respect to the concave portion 13 of the lens body 12. Even when the refracted light L2 is emitted from the lens body 12, the reflected light is accompanied with some reflection and refraction, so that the radiated light from the lens body 12 is irradiated on the target surface so that the distance between the LED chips 14 cannot be visually observed. In other words, the component of the light emitted from the LED chip 14 that travels straight through the lens body 12 is reduced as much as possible, and is configured to be refracted when it first enters the lens body 12, thereby allowing the incident light to the lens body 12. Will cross the incident light of other LED chips.

図４は本発明と対比するための比較構造を示す。すなわち、レンズ体の凹部のＬＥＤチップ対向壁４０が水平面（ＬＥＤチップの直射光Ｌ４１に対して垂直）になっているので、ＬＥＤチップの放射光Ｌ４１は導光体１２に入射したあとも直進光Ｌ４２になる成分が多くなる。複数のＬＥＤチップの放射光が、それぞれに直進する成分が多くなると、ＬＥＤ電球の照射面においてもＬＥＤチップ同志の間隔Ｓが目視できるぐらいに表現されてしまう。   FIG. 4 shows a comparative structure for comparison with the present invention. That is, since the LED chip facing wall 40 of the concave portion of the lens body is horizontal (perpendicular to the direct light L41 of the LED chip), the emitted light L41 of the LED chip is a straight light after entering the light guide 12 The component which becomes L42 increases. If the emitted light from the plurality of LED chips increases in the amount of components that go straight to each other, the spacing S between the LED chips can be visually recognized even on the irradiation surface of the LED bulb.

図５は本発明をさらに説明するための構造を示す。本発明においては、それぞれのＬＥＤチップの直射光すべてが凹部の傾斜壁５０に入射する構造が望ましいが、必ずしも直射光のすべてが傾斜壁に入射する必要はない。たとえば、図においては、直射光Ｌ５０は傾斜壁に入射するが、直射光Ｌ５１は傾斜壁には入射していない。本発明においては、各ＬＥＤチップの放射光は半分以上の成分が傾斜壁に入射すれば間隔を照射面において消すだけの効果を有する。   FIG. 5 shows a structure for further explaining the present invention. In the present invention, a structure in which all the direct light of each LED chip is incident on the inclined wall 50 of the recess is desirable, but not all of the direct light is necessarily incident on the inclined wall. For example, in the figure, the direct light L50 is incident on the inclined wall, but the direct light L51 is not incident on the inclined wall. In the present invention, the emitted light of each LED chip has an effect of eliminating the interval on the irradiation surface when more than half of the components are incident on the inclined wall.

本発明について寸法例を示す。
凹部の寸法は開口部分が８ｍｍ×８ｍｍ、深さ７ｍｍ
ＬＥＤチップ同志の間隔０．５ｍｍ
レンズ体の寸法 外径２６〜３０ｍｍ、高さ１５ｍｍ The example of a dimension is shown about this invention.
The dimensions of the recess are 8mm x 8mm at the opening and 7mm in depth.
LED chip spacing 0.5mm
Lens body dimensions Outer diameter 26-30mm, Height 15mm

１ ＬＥＤ電球
１０ 発光部
１１ 光源
１２ レンズ体
１３ 凹部
１４ ＬＥＤチップ
２０ 電源部
３０ ソケット部 DESCRIPTION OF SYMBOLS 1 LED bulb 10 Light emission part 11 Light source 12 Lens body 13 Recessed part 14 LED chip 20 Power supply part 30 Socket part

Claims (2)

複数のＬＥＤチップが基板に形成された光源と、この光源の放射方向に配置されるとともに、光源部分を覆う凹部が形成されたレンズ体と、光源およびレンズ体を収容するケーシングとよりなるＬＥＤ電球において、
前記レンズ体の凹部の内面は、前記ＬＥＤチップの放射光を拡散させる傾斜構造を有し、この傾斜構造はＬＥＤチップの垂直放射光が直接入射するように形成されていることを特徴とするＬＥＤ電球。 An LED light bulb comprising a light source having a plurality of LED chips formed on a substrate, a lens body that is disposed in the radiation direction of the light source and that has a recess that covers the light source portion, and a casing that houses the light source and the lens body In
The inner surface of the concave portion of the lens body has an inclined structure that diffuses the emitted light of the LED chip, and the inclined structure is formed so that the vertical emitted light of the LED chip is directly incident thereon. light bulb. 前記光源は同一基板に４つのＬＥＤチップが互いに微小間隔をもって配置されるとともに、当該微小間隔が全体として十字型を形成するようになっていることを特徴とする請求項１のＬＥＤ電球。   4. The LED light bulb according to claim 1, wherein the light source has four LED chips arranged on the same substrate with a minute interval, and the minute interval forms a cross shape as a whole.
JP2013191589A 2013-09-17 2013-09-17 Led light bulb Pending JP2015060631A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007005218A (en) * 2005-06-27 2007-01-11 Matsushita Electric Works Ltd Light emitting apparatus and lighting equipment provided therewith
JP2009266523A (en) * 2008-04-24 2009-11-12 Panasonic Electric Works Co Ltd Light-emitting unit with lens
US20120014116A1 (en) * 2010-07-19 2012-01-19 Wen-Sung Hu Light-Transmissive Shell Capable Of Intensifying Illuminant And Wide-Angle Light Transmission
US20120250304A1 (en) * 2011-03-31 2012-10-04 Xicato, Inc. Grid structure on a transmissive layer of an led-based illumination module
WO2013056516A1 (en) * 2011-10-19 2013-04-25 Koninklijke Philips Electronics N.V. Lighting device with omnidirectional light distribution
JP2013084346A (en) * 2011-10-06 2013-05-09 Hitachi Appliances Inc Lighting apparatus
JP2013134898A (en) * 2011-12-26 2013-07-08 Sharp Corp Lighting system
JP2013137890A (en) * 2011-12-28 2013-07-11 Hitachi Appliances Inc Lighting apparatus, and condenser used for the same
JP2013153134A (en) * 2011-12-26 2013-08-08 Nichia Chem Ind Ltd Light-emitting device manufacturing method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007005218A (en) * 2005-06-27 2007-01-11 Matsushita Electric Works Ltd Light emitting apparatus and lighting equipment provided therewith
JP2009266523A (en) * 2008-04-24 2009-11-12 Panasonic Electric Works Co Ltd Light-emitting unit with lens
US20120014116A1 (en) * 2010-07-19 2012-01-19 Wen-Sung Hu Light-Transmissive Shell Capable Of Intensifying Illuminant And Wide-Angle Light Transmission
US20120250304A1 (en) * 2011-03-31 2012-10-04 Xicato, Inc. Grid structure on a transmissive layer of an led-based illumination module
JP2013084346A (en) * 2011-10-06 2013-05-09 Hitachi Appliances Inc Lighting apparatus
WO2013056516A1 (en) * 2011-10-19 2013-04-25 Koninklijke Philips Electronics N.V. Lighting device with omnidirectional light distribution
JP2013134898A (en) * 2011-12-26 2013-07-08 Sharp Corp Lighting system
JP2013153134A (en) * 2011-12-26 2013-08-08 Nichia Chem Ind Ltd Light-emitting device manufacturing method
JP2013137890A (en) * 2011-12-28 2013-07-11 Hitachi Appliances Inc Lighting apparatus, and condenser used for the same

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