JP2011230751A - Led lighting fixture - Google Patents

Led lighting fixture Download PDF

Info

Publication number
JP2011230751A
JP2011230751A JP2010192067A JP2010192067A JP2011230751A JP 2011230751 A JP2011230751 A JP 2011230751A JP 2010192067 A JP2010192067 A JP 2010192067A JP 2010192067 A JP2010192067 A JP 2010192067A JP 2011230751 A JP2011230751 A JP 2011230751A
Authority
JP
Japan
Prior art keywords
led
heat
lens
substrate
led lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2010192067A
Other languages
Japanese (ja)
Inventor
Yoshikazu Washimi
義和 鷲見
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lecip Holdings Corp
Original Assignee
Lecip Holdings Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lecip Holdings Corp filed Critical Lecip Holdings Corp
Priority to JP2010192067A priority Critical patent/JP2011230751A/en
Publication of JP2011230751A publication Critical patent/JP2011230751A/en
Pending legal-status Critical Current

Links

Images

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting fixture which can make compatible the securing of the illuminance of lighting and the reduction of the heat generation of the LED.SOLUTION: The main part of a boat-like LED lighting fixture 1 is composed of a lens member 2 in which irradiation light from an LED 3 as a light source is diffused by being transmitted through the lens member 2 and the diffused light is projected as lighting. The LED lighting fixture 1 is provided with countermeasures for heat generation and insufficient illuminance. As the countermeasure for heat generation, for example, heat dissipation holes 22, 23 are formed at side walls 5a, 5b of the lens member 2, the substrate 11 of the LED 3 is formed of an aluminum material, copper rods 28, 29 are mounted to the substrate 11, or resistances 14, 15 are formed in an aerial wiring structure. As the countermeasure for insufficient illuminance, the curvature of a lens 16 of the lens member 2 is set to be larger.

Description

本発明は、光源にLEDを使用したLED灯具に関する。   The present invention relates to an LED lamp using an LED as a light source.

近年、長寿命という利点から光源としてLED(Light Emitting Diode)が広く使用される傾向にある。この照明具の一種には、例えば図26に示すような舟形のLED灯具81(特許文献1〜3等参照)がある。この舟形のLED灯具81は、例えば車両のルームランプ等に使用されている。   In recent years, LEDs (Light Emitting Diodes) tend to be widely used as light sources because of the advantage of long life. As one type of the lighting fixture, for example, there is a boat-shaped LED lighting fixture 81 as shown in FIG. The boat-shaped LED lamp 81 is used, for example, for a vehicle room lamp.

LED灯具81において円筒状のケース本体82の両端には、ケース本体82と略同径の一対の口金83,83が電気接続端子として設けられている。ケース本体82において上面82a(光照射面側)には、大きく開く開口穴82bが形成され、この開口穴82bに光源として複数のLED84,84…が並び配置されている。そして、一対の口金83,83の間に電位差が生じるとLED84,84…が点灯し、開口穴82bから引き出されたLED84,84…の光によって周囲を照明する。   In the LED lamp 81, a pair of caps 83, 83 having substantially the same diameter as the case main body 82 are provided at both ends of the cylindrical case main body 82 as electrical connection terminals. In the case main body 82, an opening hole 82b that opens widely is formed on the upper surface 82a (light irradiation surface side), and a plurality of LEDs 84, 84... When a potential difference is generated between the pair of caps 83, 83, the LEDs 84, 84... Are turned on, and the surroundings are illuminated with the light of the LEDs 84, 84.

ところで、LED84の光には指向性があるため、LED84では特定の地点をスポット的に照明することしかできない。よって、図26に示すLED灯具81で、車内を広範囲に亘り照明するには、例えば開口穴82bにレンズを取り付け、レンズの光拡散効果を利用して、LED84の光を広範囲に広げる方式が想定される。こうすれば、光源としてLED84を使用しても、車内全域を広く照明することが可能となる。   By the way, since the light of the LED 84 has directivity, the LED 84 can only illuminate a specific spot in a spot manner. Therefore, in order to illuminate the interior of the vehicle over a wide range with the LED lamp 81 shown in FIG. 26, for example, a method is assumed in which a lens is attached to the opening hole 82b and the light of the LED 84 is widened using the light diffusion effect of the lens. Is done. In this way, even if the LED 84 is used as the light source, the entire vehicle interior can be illuminated widely.

意匠登録第1316788号公報Design Registration No. 1316788 実用新案登録第3134384号公報Utility Model Registration No. 3134384 特開2007−331697号公報JP 2007-331697 A

しかし、開口穴82bをレンズで閉じると、レンズによって閉じられた密閉空間にLED84が配置されることになる。よって、LED84が長時間に亘り点灯して熱を持つと、この熱が密閉空間に溜まり、LED84又は周囲の電子部品が発熱する状況に陥る。LED84には、熱を持つと照度(照明の明るさ)が落ちる特性があるので、レンズを取り付けて照明範囲を広げようとした場合、これに背反して、レンズにより閉じられた空間に溜まる熱でLED84が発熱し、これが照度低下の懸念に繋がる。   However, when the opening hole 82b is closed with a lens, the LED 84 is disposed in a sealed space closed by the lens. Therefore, when the LED 84 is lit for a long time and has heat, this heat accumulates in the sealed space, and the LED 84 or surrounding electronic components generate heat. The LED 84 has a characteristic that the illuminance (brightness of illumination) decreases when it has heat. Therefore, when trying to widen the illumination range by attaching a lens, the heat accumulated in the space closed by the lens is contrary to this. As a result, the LED 84 generates heat, which leads to a decrease in illuminance.

本発明の目的は、照明の照度確保と、LEDの発熱軽減とを両立することができるLED灯具を提供することにある。   An object of the present invention is to provide an LED lamp capable of ensuring both illumination intensity and reducing the heat generation of an LED.

前記問題点を解決するために、本発明では、両端に一対の給電端子を有する本体部に光源としてLEDが取り付けられ、当該LEDの照射光によって周囲を照明するLED灯具において、前記LEDの照射光を広範囲に広げて前記本体部の外部に放射するレンズと、 前記LED点灯時に灯具に発生する熱を放熱する放熱手段とを備えたことを要旨とする。   In order to solve the above problems, in the present invention, in an LED lamp in which an LED is attached as a light source to a main body having a pair of power supply terminals at both ends, and the surroundings are illuminated by the irradiation light of the LED, the irradiation light of the LED The gist is provided with a lens that spreads the light widely and radiates it to the outside of the main body, and a heat radiating means that radiates heat generated in the lamp when the LED is lit.

この構成によれば、LEDの光を広範囲に広げて放射するレンズを設けたので、LEDという光に指向性がある光源を使用しても、広範囲に亘り光を照明することが可能となる。よって、照明照度が確保され、より明るい照明が可能となる。また、灯具にレンズを設けると、灯具に発生する熱がレンズによって遮られて熱の逃げ場がなくなり、LEDが発熱して照度が低下する可能性がある。しかし、本構成では、LED点灯時の発生熱を放熱する放熱手段を設けたので、発生熱が灯具内に留まらず、LED発熱が抑制される。よって、熱による負荷がLEDにかからずに済むので、発熱を要因とするLEDの照度低下も生じ難い。   According to this configuration, since the lens that spreads and emits the light of the LED is provided, it is possible to illuminate the light over a wide range even if a light source called LED that has directivity is used. Therefore, illumination illuminance is ensured and brighter illumination is possible. Further, when a lens is provided in the lamp, the heat generated in the lamp is blocked by the lens and there is no escape of heat, and the LED may generate heat and the illuminance may decrease. However, in this configuration, since the heat dissipating means for dissipating the generated heat at the time of lighting the LED is provided, the generated heat does not stay in the lamp, and the LED heat generation is suppressed. Therefore, since the load due to heat does not need to be applied to the LED, the illuminance reduction of the LED due to heat generation hardly occurs.

本発明では、前記レンズは、前記本体部と一体の透明材により形成されていることを要旨とする。
この構成によれば、レンズを本体部との一体部品としたので、取り扱う部品点数が少なく済み、部品の組付工数も削減可能となる。
The gist of the present invention is that the lens is formed of a transparent material integral with the main body.
According to this configuration, since the lens is an integral part of the main body, the number of parts to be handled can be reduced, and the number of assembling steps for the part can be reduced.

本発明では、前記放熱手段は、前記LEDの基板として設けられたアルミ製基材であることを要旨とする。
この構成によれば、LED点灯時に基板上の電子部品(LED含む)が発熱すると、発生熱がアルミ製基板によって放熱される。このため、LEDの基板の一部材によって発生熱を放熱することが可能となるので、部品点数を増やすことなくLED放熱が可能となる。
The gist of the present invention is that the heat dissipation means is an aluminum base material provided as a substrate of the LED.
According to this configuration, when the electronic components (including the LED) on the substrate generate heat when the LED is turned on, the generated heat is radiated by the aluminum substrate. For this reason, since it is possible to radiate the generated heat by one member of the LED substrate, it is possible to radiate the LED without increasing the number of components.

本発明では、前記放熱手段は、前記LEDの基板に取り付けられた放熱用金属材であることを要旨とする。
この構成によれば、LED点灯時に基板上の電子部品(LED含む)が発熱すると、発生熱が放熱用金属材によって基板から逃がされる。このため、放熱用金属材という外気に触れる金属材によって発生熱を放熱することが可能となるので、LED放熱をより効率よく行うことが可能となる。
The gist of the present invention is that the heat dissipating means is a heat dissipating metal material attached to the substrate of the LED.
According to this configuration, when an electronic component (including the LED) on the substrate generates heat when the LED is turned on, the generated heat is released from the substrate by the metal material for heat dissipation. For this reason, since it is possible to radiate generated heat by a metal material that touches the outside air, which is a metal material for heat dissipation, it is possible to more efficiently dissipate the LED.

本発明では、前記放熱手段は、前記本体部において前記LEDを収納する収納空間を外部に導通する放熱孔であることを要旨とする。
この構成によれば、LED点灯時に基板上の電子部品(LED含む)が発熱すると、発生熱が放熱孔から本体部の外部に逃がされる。このため、発生熱を本体部の外部に放出するという放熱効率の高い形式によって、LED放熱を行うことが可能となる。
The gist of the present invention is that the heat radiating means is a heat radiating hole that conducts the storage space for storing the LED in the main body portion to the outside.
According to this configuration, when an electronic component (including the LED) on the substrate generates heat when the LED is lit, the generated heat is released from the heat dissipation hole to the outside of the main body. For this reason, it becomes possible to perform LED heat radiation by a form with high heat radiation efficiency of releasing generated heat to the outside of the main body.

本発明では、前記放熱手段は、前記LEDの点灯回路の素子を、基板から浮かして配線する空中配線構造であることを要旨とする。
この構成によれば、LED点灯時に素子が発熱しても、素子は空中配線構造をとるので、素子の熱が基板に至り難くなる。よって、素子の発生熱が結果としてLEDに至り難くので、LED発熱を抑制することが可能となる。
The gist of the present invention is that the heat dissipating means has an aerial wiring structure in which the elements of the lighting circuit of the LED are floated and wired from the substrate.
According to this configuration, even if the element generates heat when the LED is turned on, the element has an aerial wiring structure, so that the heat of the element hardly reaches the substrate. Therefore, since the heat generated by the element is difficult to reach the LED as a result, the LED heat generation can be suppressed.

本発明では、前記レンズの形状を加工して前記LEDの照射光をより広範囲に拡散させることにより、照明の照度を高く設定する照度確保手段を備えたことを要旨とする。
この構成によれば、レンズ形状に加工を施すことでレンズに照度確保手段を設けたので、LEDの光を照度確保手段によって高い照度で照明することが可能となる。よって、照明が照度不足に陥り難くなり、高い照明照度を確保することが可能となる。
The gist of the present invention is that it includes illuminance securing means for setting the illuminance of the illumination high by processing the shape of the lens and diffusing the irradiation light of the LED over a wider range.
According to this configuration, since the lens is provided with the illuminance securing means by processing the lens shape, the LED light can be illuminated with high illuminance by the illuminance securing means. Therefore, it becomes difficult for illumination to fall into illuminance deficiency, and it becomes possible to ensure high illumination illuminance.

本発明によれば、照明の照度確保と、LEDの発熱軽減とを両立することができる。   According to the present invention, it is possible to achieve both the illumination illuminance and the LED heat generation reduction.

第1実施形態の舟形LED灯具の外観を示し、(a)が表側から見た斜視図、(b)が裏側から見た斜視図。The external view of the boat-shaped LED lamp of 1st Embodiment is shown, (a) is the perspective view seen from the front side, (b) The perspective view seen from the back side. LED灯具の部品構造を示す分解斜視図。The disassembled perspective view which shows the component structure of a LED lamp. LED灯具の外観詳細を示し、(a)が平面図、(b)が背面図、(c)が左側面図、(d)が正面図、(e)が右側面図、(f)が裏面図。The external appearance details of the LED lamp are shown, (a) is a plan view, (b) is a rear view, (c) is a left side view, (d) is a front view, (e) is a right side view, and (f) is a back side. Figure. アッパーケースにおけるレンズ部の形状を示す模式図。The schematic diagram which shows the shape of the lens part in an upper case. (a),(b)は、レンズ部における光の拡散原理を示す説明図。(A), (b) is explanatory drawing which shows the diffusion principle of the light in a lens part. LED灯具が取付状態において軸回転し難くなっていること示す説明図。Explanatory drawing which shows that it is difficult to rotate an axis | shaft in a mounted state. LED灯具の基板構造を示す断面図。Sectional drawing which shows the board | substrate structure of a LED lamp. 銅棒が取り付けられた基板を示し、(a)が側面図、(b)が裏面から見た斜視図。The board | substrate with which the copper rod was attached is shown, (a) is a side view, (b) is the perspective view seen from the back surface. 口金の内部構造を示す縦断面図。The longitudinal cross-sectional view which shows the internal structure of a nozzle | cap | die. LED灯具の点灯回路の回路図。The circuit diagram of the lighting circuit of a LED lamp. LED灯具の変形例を示し、(a)が平面図、(b)が背面図、(c)が左側面図、(d)が正面図、(e)が右側面図、(f)が裏面図。The modification of an LED lamp is shown, (a) is a top view, (b) is a rear view, (c) is a left side view, (d) is a front view, (e) is a right side view, and (f) is a back surface. Figure. LED灯具の他の変形例を示す斜視図。The perspective view which shows the other modification of an LED lamp. LED灯具の他の変形例を示す斜視図。The perspective view which shows the other modification of an LED lamp. LED灯具の他の変形例を示し、(a)が平面図、(b)が背面図、(c)が左側面図、(d)が正面図、(e)が右側面図、(f)が裏面図。The other modification of an LED lamp is shown, (a) is a top view, (b) is a rear view, (c) is a left side view, (d) is a front view, (e) is a right side view, (f) Is the back view. LED灯具の他の変形例を示し、(a)が平面図、(b)が背面図、(c)が左側面図、(d)が正面図、(e)が右側面図、(f)が裏面図。The other modification of an LED lamp is shown, (a) is a top view, (b) is a rear view, (c) is a left side view, (d) is a front view, (e) is a right side view, (f) Is the back view. LED灯具の他の変形例を示し、(a)が平面図、(b)が背面図、(c)が左側面図、(d)が正面図、(e)が右側面図、(f)が裏面図。The other modification of an LED lamp is shown, (a) is a top view, (b) is a rear view, (c) is a left side view, (d) is a front view, (e) is a right side view, (f) Is the back view. LED灯具の他の変形例を示し、(a)が平面図、(b)が背面図、(c)が左側面図、(d)が正面図、(e)が右側面図、(f)が裏面図。The other modification of an LED lamp is shown, (a) is a top view, (b) is a rear view, (c) is a left side view, (d) is a front view, (e) is a right side view, (f) Is the back view. 第2実施形態のウェッジ型LED灯具の外観を示す斜視図。The perspective view which shows the external appearance of the wedge type LED lamp of 2nd Embodiment. LED灯具の部品構造を示す分解斜視図。The disassembled perspective view which shows the component structure of a LED lamp. LED灯具の内部構造を示す縦断面図。The longitudinal cross-sectional view which shows the internal structure of a LED lamp. 別例における基板構造を示す斜視図。The perspective view which shows the board | substrate structure in another example. (a)〜(c)は他の別例におけるLED灯具の側壁部分を示す斜視図。(A)-(c) is a perspective view which shows the side wall part of the LED lamp in another example. 他の別例におけるアッパーケースの斜面部付近の構造を示す模式図。The schematic diagram which shows the structure of the slope part vicinity of the upper case in another example. 他の別例における基板上面の部品配置形状を示す平面図。The top view which shows the components arrangement | positioning shape of the board | substrate upper surface in another example. 他の別例における放熱孔の形状を示す模式図。The schematic diagram which shows the shape of the thermal radiation hole in another example. 第2実施形態のウェッジ型LED灯具の別例を示し、(a)が正面図、(b)が平面図。The other example of the wedge type LED lamp of 2nd Embodiment is shown, (a) is a front view, (b) is a top view. 第2実施形態のウェッジ型LED灯具の別例を示し、(a)及び(b)が図26(b)に示す断面の断面図、(c)が(a)及び(b)のC方向から見た基板の図。The other example of the wedge type LED lamp of 2nd Embodiment is shown, (a) And (b) is sectional drawing of the cross section shown in FIG.26 (b), (c) is from C direction of (a) and (b). The figure of the board | substrate which looked. 従来のLED灯具の外観を示す斜視図。The perspective view which shows the external appearance of the conventional LED lamp.

(第1実施形態)
以下、本発明を車内のルームランプに具体化したLED灯具の第1実施形態を図1〜図17に従って説明する。
(First embodiment)
Hereinafter, a first embodiment of an LED lamp in which the present invention is embodied in a room lamp in a vehicle will be described with reference to FIGS.

図1〜図3に示すように、舟形のLED灯具1には、LED灯具1の本体部分(ケース)として透明のレンズ部材2が設けられている。レンズ部材2は、透明樹脂(透明材)により形成されるとともに略直方体形状をなし、光源であるLED3からの光を拡散して広範囲に照射することが可能である。レンズ部材2は、LED灯具1のレンズ及び外枠ケースを構成する部品である。なお、レンズ部材2が本体部を構成する。   As shown in FIGS. 1 to 3, the boat-shaped LED lamp 1 is provided with a transparent lens member 2 as a main body portion (case) of the LED lamp 1. The lens member 2 is formed of a transparent resin (transparent material) and has a substantially rectangular parallelepiped shape. The lens member 2 can diffuse light from the LED 3 as a light source and irradiate a wide range. The lens member 2 is a component constituting the lens and the outer frame case of the LED lamp 1. The lens member 2 constitutes the main body.

レンズ部材2は、アッパーケース4とロアケース5との2部品からなるとともに、アッパーケース4及びロアケース5を上下方向で組み付けることにより一部品に形成されている。LED灯具1は、車体天井に対してアッパーケース4が下に位置する向き(図1(b)の状態)に取り付けられるとともに、下側に位置するLED3から光を下方に照射することによって、車内を照明する。   The lens member 2 is composed of two parts, an upper case 4 and a lower case 5, and is formed as one part by assembling the upper case 4 and the lower case 5 in the vertical direction. The LED lamp 1 is mounted in the direction in which the upper case 4 is located below (the state of FIG. 1B) with respect to the ceiling of the vehicle body, and by irradiating light downward from the LED 3 located on the lower side, Illuminate.

レンズ部材2の灯具長さ方向(図1のY軸方向)の両端には、一対の円筒状の口金6,7が取り付けられている。口金6,7は、LED灯具1の電気接続端子である。図2に示すように、アッパーケース4の両端には、一対の半円弧状の取付片8,8が延設されている。また、ロアケース5の両端にも、一対の半円弧状の取付片9,9が延設されている。そして、アッパーケース4とロアケース5と組み付けると、互いに組み合う取付片8,8と9,9との各組がそれぞれ筒状となり、この筒部分が口金6,7に係入されることによって、レンズ部材2に口金6,7が組み付けられている。なお、口金6,7が給電端子を構成する。   A pair of cylindrical caps 6 and 7 are attached to both ends of the lens member 2 in the lamp length direction (Y-axis direction in FIG. 1). The caps 6 and 7 are electrical connection terminals of the LED lamp 1. As shown in FIG. 2, a pair of semicircular arc-shaped attachment pieces 8, 8 extend at both ends of the upper case 4. A pair of semicircular arc-shaped attachment pieces 9 are also extended at both ends of the lower case 5. Then, when the upper case 4 and the lower case 5 are assembled, each set of mounting pieces 8, 8 and 9, 9 which are assembled to each other becomes a cylindrical shape, and this cylindrical portion is engaged with the caps 6 and 7, thereby the lens. The bases 6 and 7 are assembled to the member 2. Note that the caps 6 and 7 constitute a power feeding terminal.

図2に示すように、レンズ部材2の内部には、LED灯具1の電子部品を収納するための部品収納部10が形成されている。部品収納部10は、アッパーケース4の内部の凹みと、ロアケース5の内部の凹みとから形成され、アッパーケース4及びロアケース5の内壁に囲まれた空間から形成されている。なお、部品収納部10が収納空間を構成する。   As shown in FIG. 2, a component storage portion 10 for storing the electronic components of the LED lamp 1 is formed inside the lens member 2. The component storage unit 10 is formed by a recess inside the upper case 4 and a recess inside the lower case 5, and is formed by a space surrounded by the inner walls of the upper case 4 and the lower case 5. The component storage unit 10 forms a storage space.

レンズ部材2の部品収納部10には、LED灯具1の基板11が収納されている。基板11には、LED灯具1の点灯回路12が実装されている。この場合、基板11の表面(装面)11aには、LED灯具1の光源として複数のLED(Light Emitting Diode)
3,3…が実装されている。これらLED3,3…は、灯具幅方向(図2のX軸方向)及び灯具長さ方向Yに沿って計9個が格子状に配列されている。また、図1に示すように、基板11の裏面11bには、複数の抵抗14,15が実装されている。基板11は、組み付けの際、ロアケース5の取付片9,9に形成された係止溝9a,9aによって位置決めされる。なお、抵抗14,15が点灯回路の素子を構成する。
A substrate 11 of the LED lamp 1 is stored in the component storage portion 10 of the lens member 2. A lighting circuit 12 for the LED lamp 1 is mounted on the substrate 11. In this case, the surface (mounting surface) 11 a of the substrate 11 has a plurality of LEDs (Light Emitting Diodes) as the light source of the LED lamp 1.
3, 3 ... are implemented. A total of nine of these LEDs 3, 3,... Are arranged in a grid along the lamp width direction (X-axis direction in FIG. 2) and the lamp length direction Y. As shown in FIG. 1, a plurality of resistors 14 and 15 are mounted on the back surface 11 b of the substrate 11. The substrate 11 is positioned by the locking grooves 9a and 9a formed in the attachment pieces 9 and 9 of the lower case 5 when assembled. The resistors 14 and 15 constitute an element of the lighting circuit.

また、本例の場合、基板11には、LED3に流される電流を一定とする定電流素子13が実装されている。ところで、自動車などのバッテリー電源では、電源電圧の変動が大きく、電圧によって、明るさが変化する問題がある。本例のように定電流素子13を搭載すれば、供給する電源の電圧変動があっても、この電流値を一定に保持することが可能となり、安定した照明が可能である。なお、定電流素子13が点灯回路の素子を構成する。   In the case of this example, a constant current element 13 is mounted on the substrate 11 to keep the current flowing through the LED 3 constant. By the way, in a battery power source of an automobile or the like, there is a problem that the power supply voltage varies greatly and the brightness changes depending on the voltage. If the constant current element 13 is mounted as in this example, even if there is a fluctuation in the voltage of the power supply to be supplied, this current value can be kept constant, and stable illumination is possible. The constant current element 13 constitutes an element of the lighting circuit.

図4、図5に示すように、アッパーケース4において上壁4aの内面には、上壁4aをレンズ部16として機能させる円弧状突部17が突設されている。ところで、この種のレンズ部16では、図5に示すように、LED3からの照射光が円弧状突部17に入射すると、一部は反射してLED3側に戻るが、残りが角度を変えて円弧状突部17内に入射する。そして、この光がレンズ部16の上面に至ると、ここでも一部は反射するが、残りが更に角度を変えてレンズ部16の外部に出射し、これが照明光となる。なお、レンズ部16がレンズを構成し、円弧状突部17が照度確保手段を構成する。   As shown in FIGS. 4 and 5, an arcuate protrusion 17 is provided on the inner surface of the upper wall 4 a in the upper case 4 so that the upper wall 4 a functions as the lens portion 16. By the way, in this kind of lens part 16, when the irradiation light from LED3 injects into the circular arc-shaped protrusion 17, as shown in FIG. 5, one part will reflect and it will return to LED3 side, but the rest changes an angle. The light enters the arcuate protrusion 17. Then, when this light reaches the upper surface of the lens unit 16, a part of the light is also reflected here, but the remainder is further changed in angle and emitted to the outside of the lens unit 16, which becomes illumination light. In addition, the lens part 16 comprises a lens, and the circular-arc-shaped protrusion 17 comprises an illuminance securing means.

よって、レンズ部16は、LED3からの照射光を入射すると、入射光を拡散効果によって散らすことで、LED3の光を広範囲に照射させる。このため、LED3の照射光に指向性があっても、レンズ部16によって光が広範囲化されるので、LED灯具1の照度が確保され、車内全域が明るく照明される。   Therefore, when the illumination light from the LED 3 is incident, the lens unit 16 irradiates the light of the LED 3 over a wide range by scattering the incident light by a diffusion effect. For this reason, even if the irradiation light of the LED 3 has directivity, the light is widened by the lens unit 16, so that the illuminance of the LED lamp 1 is ensured and the entire interior of the vehicle is illuminated brightly.

また、この種のレンズ部16は、図5に示すように、円弧状突部17の曲率に応じて光拡散効果が決まる。つまり、円弧状突部17の曲率が小さい(図5(a)の状態)と、光拡散効果があまり得られず、照明範囲は狭くなってしまう。一方、円弧状突部17の曲率が大きい(図5(b)の状態)と、光拡散効果が大きくなって、照明範囲を広くとれる。よって、本例の場合、通常(図4の破線)よりも曲率を大きくする(図4の実線)ことによって、レンズ部16の光拡散効果を高めている。   Further, as shown in FIG. 5, this type of lens portion 16 has a light diffusion effect determined according to the curvature of the arcuate protrusion 17. That is, if the curvature of the arcuate protrusion 17 is small (the state of FIG. 5A), the light diffusion effect cannot be obtained so much that the illumination range becomes narrow. On the other hand, when the curvature of the arcuate protrusion 17 is large (the state shown in FIG. 5B), the light diffusion effect becomes large, and the illumination range can be widened. Therefore, in the case of this example, the light diffusing effect of the lens unit 16 is enhanced by making the curvature larger (solid line in FIG. 4) than usual (broken line in FIG. 4).

図4に示すように、アッパーケース4の4つの側壁4b〜4eの内面には、外部からLED灯具1を見たときの意匠性を確保するレンズカット部18が設けられている。レンズカット部18は、灯具高さ方向(図1や図2のZ軸方向)に沿って複数の溝19を切ることによって形成されている。レンズカット部18は、この溝19と突20とが交互に並ぶ形状によって形成されている。このレンズカット部18によって、側壁4b〜4eの外面からは内部にある部品が見えないようになっており、意匠性が確保されている。また、上述のように、円弧状突部17で反射された一部の光が、側壁4b〜4eから外側に向かって照射される際に、このレンズカット部18の光の拡散効果によって側壁周囲に亘って一様に光が照射される。   As shown in FIG. 4, lens cut portions 18 are provided on the inner surfaces of the four side walls 4 b to 4 e of the upper case 4 to ensure design when the LED lamp 1 is viewed from the outside. The lens cut portion 18 is formed by cutting a plurality of grooves 19 along the lamp height direction (Z-axis direction in FIGS. 1 and 2). The lens cut portion 18 is formed in a shape in which the grooves 19 and the protrusions 20 are alternately arranged. The lens cut portion 18 prevents the internal components from being seen from the outer surfaces of the side walls 4b to 4e, thereby ensuring design. Further, as described above, when a part of the light reflected by the arc-shaped protrusion 17 is irradiated outward from the side walls 4b to 4e, the periphery of the side wall is caused by the light diffusion effect of the lens cut portion 18. Light is irradiated uniformly over the entire area.

図2に示すように、基板11の灯具長さ方向Yの両端には、基板本体11cから所定量だけ飛び出した一対の突出片11d,11dが突設されている。レンズ部材2に対する組付け状態の際、基板11は、これら突出片11d,11dが口金6,7の内部に入り込
む組み付け位置関係をとる。突出片11d,11dのそれぞれの先端には、配線用の接続端子21,21が設けられ、これらが各々の口金6,7に電気接続される。
As shown in FIG. 2, a pair of projecting pieces 11d and 11d projecting from the substrate body 11c by a predetermined amount are provided at both ends of the substrate 11 in the lamp length direction Y. In the assembled state with respect to the lens member 2, the substrate 11 has an assembled positional relationship in which the protruding pieces 11 d and 11 d enter the inside of the caps 6 and 7. Connection terminals 21 and 21 for wiring are provided at the tips of the projecting pieces 11d and 11d, and these are electrically connected to the caps 6 and 7, respectively.

図1〜図3に示すように、ロアケース5において灯具幅方向Xの一対の側壁5a,5bは、LED点灯時にLED灯具1に発生する熱を外部に逃がす一対の放熱孔22,23が形成されている。LED3が点灯すると、LED3やその周辺の電子部品から熱が発生するため、この発生熱を放熱孔22,23からレンズ部材2の外部に放出する。放熱孔22,23は、ロアケース5の端縁を切り欠くことによって形成され、ロアケース5の切欠部分とアッパーケース4の端縁とで囲まれる領域によって形成される。放熱孔22,23は、側壁5a,5bにおいて灯具長さ方向Yの一帯に亘り形成されている。なお、放熱孔22,23が放熱手段を構成する。   As shown in FIGS. 1 to 3, in the lower case 5, the pair of side walls 5 a and 5 b in the lamp width direction X are formed with a pair of heat radiation holes 22 and 23 for releasing heat generated in the LED lamp 1 to the outside when the LED is lit. ing. When the LED 3 is lit, heat is generated from the LED 3 and its surrounding electronic components, and the generated heat is released from the heat radiation holes 22 and 23 to the outside of the lens member 2. The heat radiation holes 22 and 23 are formed by cutting out the edge of the lower case 5, and are formed by a region surrounded by the cutout portion of the lower case 5 and the edge of the upper case 4. The heat radiating holes 22 and 23 are formed over one zone of the lamp length direction Y in the side walls 5a and 5b. The heat radiation holes 22 and 23 constitute a heat radiation means.

ところで、本例の場合、アッパーケース4及びロアケース5によって囲まれる略密閉の部品収納部10に基板11(LED3や各素子13〜15)が収納される。このため、LED3や各素子13〜15から発生した熱が、ケース内の空気に伝わり、内部の空気温度が上昇する。空気は、熱伝導性のよい金属と比較すると、熱伝導率が小さく比熱が大きいために、一旦熱を保有すると、この熱が長時間に亘り残り、LED3の温度上昇の助長に繋がる。よって、本例の場合は、レンズ部材2の側面に放熱孔22,23を設け、この放熱孔22,23を介して内部の空気と外部の空気とが交互に入れ替わるようにすることによってケース内の熱を外部に逃がす、いわゆる対流放熱によって、温度の高い空気がケース内に残らないようにする。   By the way, in the case of this example, the board | substrate 11 (LED3 and each element 13-15) is accommodated in the substantially sealed components accommodating part 10 enclosed by the upper case 4 and the lower case 5. FIG. For this reason, the heat | fever generate | occur | produced from LED3 or each element 13-15 is transmitted to the air in a case, and internal air temperature rises. Since air has a low thermal conductivity and a large specific heat compared to a metal having good thermal conductivity, once the heat is retained, this heat remains for a long time, leading to an increase in the temperature of the LED 3. Therefore, in the case of this example, the heat radiation holes 22 and 23 are provided on the side surface of the lens member 2, and the internal air and the external air are alternately switched through the heat radiation holes 22 and 23. The air of high temperature is not left in the case by so-called convection heat radiation that releases the heat of the air to the outside.

ロアケース5の上面において灯具幅方向Xの両側には、外側に向かうに従い面が下がっていく一対の斜面部24が形成されている。ロアケース5に斜面部24を設けるのは、ロアケース5の重量を減らして、LED灯具1の重心をより低い位置に設定するためである。よって、LED灯具1を車体に取り付けた後に、図6に示すように、LED灯具1が口金6(7)の軸L回りに沿って回動し難くなるので、取り付け後の位置決め状態が確保される。また、ロアケース5の重量は、ロアケース5にのみ放熱孔22,23や斜面部24を形成することにより、アッパーケース4の重量よりも軽量に形成されている。   On the upper surface of the lower case 5, on both sides in the lamp width direction X, a pair of slope portions 24 are formed whose surfaces are lowered toward the outside. The reason why the slope portion 24 is provided in the lower case 5 is to reduce the weight of the lower case 5 and set the center of gravity of the LED lamp 1 to a lower position. Therefore, after the LED lamp 1 is attached to the vehicle body, as shown in FIG. 6, the LED lamp 1 is difficult to rotate along the axis L of the base 6 (7), so that the positioning state after the attachment is ensured. The Further, the weight of the lower case 5 is formed to be lighter than the weight of the upper case 4 by forming the heat radiation holes 22 and 23 and the inclined surface portion 24 only in the lower case 5.

図7に示すように、基板11は、複数の部材を何重にも重ねた多層構造をとっている。本例の場合、例えばアルミ製基材25を中央に置いて、その両側に絶縁層26,26が被膜され、これら絶縁層26,26の表面に配線パターン(銅線)27,27がそれぞれ形成されている。基板11の基材にアルミ製基材25を使用するのは、LED点灯時にLED3や各素子13〜15に発生する熱をアルミ製基材25に逃がす、いわゆる熱伝導によって、LED3の温度上昇を抑制するためである。なお、アルミ製基材25が放熱手段を構成する。   As shown in FIG. 7, the substrate 11 has a multilayer structure in which a plurality of members are stacked in layers. In the case of this example, for example, an aluminum base material 25 is placed in the center, and insulating layers 26 and 26 are coated on both sides thereof, and wiring patterns (copper wires) 27 and 27 are formed on the surfaces of the insulating layers 26 and 26, respectively. Has been. The aluminum base 25 is used as the base of the substrate 11 because the heat generated in the LED 3 and each of the elements 13 to 15 is released to the aluminum base 25 when the LED is lit. It is for suppressing. The aluminum base material 25 constitutes a heat dissipation means.

図8に示すように、基板11の裏面には、LED点灯時の発生熱を放熱するための一対の銅棒28,29が取り付けられている。本例の場合、図8(a)の紙面左側を28とし、紙面右側を29とする。銅棒28は、基板11上の電子部品と電気接触しないように絶縁層30を介して基板11に固定され、その反対側が口金6に各々接続されている。また、銅棒29も同様に、絶縁層31を介して基板11に固定され、その反対側が口金7に接続されている。   As shown in FIG. 8, a pair of copper bars 28 and 29 for radiating heat generated when the LED is lit are attached to the back surface of the substrate 11. In this example, the left side in FIG. 8A is 28 and the right side in FIG. The copper bar 28 is fixed to the substrate 11 through the insulating layer 30 so as not to make electrical contact with the electronic components on the substrate 11, and the opposite side is connected to the base 6. Similarly, the copper rod 29 is fixed to the substrate 11 via the insulating layer 31, and the opposite side is connected to the base 7.

銅棒28,29は、LED3や各素子13〜15で発生する熱を熱伝導によって口金6,7から外部に放出する。また、銅棒28,29は、その周辺に存在する空気によって冷却される。つまり、ケース内部の空気が銅棒28,29から受け取った熱は、上述のように、放熱孔22,23を介して対流放熱によって放熱することが可能となる。なお、銅棒28,29が放熱手段(放熱用金属材)を構成する。   The copper bars 28 and 29 release the heat generated in the LED 3 and the elements 13 to 15 to the outside from the caps 6 and 7 by heat conduction. Further, the copper bars 28 and 29 are cooled by the air existing around them. That is, the heat received by the air inside the case from the copper bars 28 and 29 can be radiated by convection heat radiation through the heat radiation holes 22 and 23 as described above. The copper bars 28 and 29 constitute a heat radiating means (heat radiating metal material).

図9に示すように、基板11の抵抗14,15は、基板11から所定間隔を持って浮いた状態で基板11に接続された空中配線構造をとっている。抵抗14(15)は、基板11において外寄りの位置、つまり突出片11dの近傍位置に配置され、一端が基板11の裏面11bに接続され、他端が接続端子21に接続されている。このため、LED点灯時に抵抗14(15)が熱を持っても、基板11と抵抗14(15)とが接していない(基板11と抵抗14(15)の間に空気が介在している)ために熱伝導によって熱が伝わり難くなる。また、抵抗14で発生した熱は、基板11と抵抗14(15)の間に介在している空気によって冷却され、さらにその空気に伝わった熱は、上述のように対流放熱によって放熱される。なお、抵抗14,15だけでなく、定電流素子13を空中配線構造としてもよい。   As shown in FIG. 9, the resistors 14 and 15 of the substrate 11 have an aerial wiring structure connected to the substrate 11 in a state of being floated from the substrate 11 with a predetermined interval. The resistor 14 (15) is disposed at a position outside the substrate 11, that is, in the vicinity of the protruding piece 11 d, one end connected to the back surface 11 b of the substrate 11, and the other end connected to the connection terminal 21. For this reason, even if the resistor 14 (15) has heat when the LED is lit, the substrate 11 and the resistor 14 (15) are not in contact (air is interposed between the substrate 11 and the resistor 14 (15)). For this reason, heat is hardly transmitted by heat conduction. The heat generated by the resistor 14 is cooled by the air interposed between the substrate 11 and the resistor 14 (15), and the heat transmitted to the air is radiated by convective heat dissipation as described above. Not only the resistors 14 and 15 but also the constant current element 13 may have an air wiring structure.

また、基板11には、LED3や素子13〜15等の発熱部材が取り付くために、口金6(7)に比べて温度が高い。よって、各素子13〜15を口金6(7)と基板11との間に接続した際、各素子13〜15の発生熱は温度の低い方に流れるため、各素子13〜15の発生熱は基板11側ではなく口金6(7)側に逃げる。よって、単なる空中配線構造のみならず、各素子13〜15の発生熱が口金6(7)に逃げるという熱伝導によっても、LED3の温度上昇を抑制することが可能である。   Moreover, since heat generating members, such as LED3 and element 13-15, attach to the board | substrate 11, temperature is high compared with the nozzle | cap | die 6 (7). Therefore, when each of the elements 13 to 15 is connected between the base 6 (7) and the substrate 11, the heat generated by each of the elements 13 to 15 flows in the lower temperature, so that the heat generated by each of the elements 13 to 15 is Escape to the base 6 (7) side instead of the substrate 11 side. Therefore, it is possible to suppress the temperature rise of the LED 3 not only by a simple aerial wiring structure but also by heat conduction in which the heat generated by the elements 13 to 15 escapes to the cap 6 (7).

図10に示すように、LED灯具1の点灯回路12には、複数のダイオード(図示略)をブリッジ状に組んだブリッジ回路32が設けられている。ブリッジ回路32は、LED灯具1を左右反対に車体に組み付けても、電位の+−逆取り付けを許容するものである。LED3,3…は、直列接続された3つのLED3を1つの組として、これら組が並列接続されている。ブリッジ回路32は、4端子のうちの2端子が車両バッテリ(図示略)に接続され、残りの2端子がLED群及び抵抗群の直列回路に接続されている。   As shown in FIG. 10, the lighting circuit 12 of the LED lamp 1 is provided with a bridge circuit 32 in which a plurality of diodes (not shown) are assembled in a bridge shape. The bridge circuit 32 allows +/- reverse attachment of the potential even when the LED lamp 1 is assembled to the vehicle body in the opposite direction. The LEDs 3, 3... Are composed of three LEDs 3 connected in series as one set, and these sets are connected in parallel. In the bridge circuit 32, two of the four terminals are connected to a vehicle battery (not shown), and the remaining two terminals are connected to a series circuit of an LED group and a resistor group.

さて、本例の場合、アッパーケース4にレンズ部16を設け、LED3の光をレンズ部16により拡散することによって、LED3の照射光を照明として外部放射する。よって、LED3の光には指向性があるが、LED3の光をレンズ部16に通して外部放出することにより、LED3の照射光を広範囲に広がった光として照明することが可能となる。このため、車内全域を明るく照らし出すことが可能となる。   Now, in the case of this example, the lens part 16 is provided in the upper case 4 and the light of the LED 3 is diffused by the lens part 16 to radiate the irradiation light of the LED 3 as illumination. Therefore, although the light of LED3 has directivity, it becomes possible to illuminate the irradiation light of LED3 as light which spreads in a wide range by emitting the light of LED3 through lens unit 16 to the outside. For this reason, it becomes possible to illuminate the entire vehicle interior brightly.

ところで、アッパーケース4にレンズ部16を設け、かつレンズ部材2の側壁4b〜4eで基板11の周囲を覆うと、レンズ部材2において基板11を収納する部品収納部10が密閉された空間となってしまう。よって、LED点灯時にLED3やその周辺の電子部品が発熱すると、熱の逃げ場がなく、密閉空間に溜まり、LED3の発熱が助長される。LED3には、温度が上がると照度が落ちる特性があるので、基板11の収納空間が密閉の場合には、この密閉空間に溜まる熱によって、照度が低下する懸念がある。   By the way, when the lens portion 16 is provided in the upper case 4 and the periphery of the substrate 11 is covered with the side walls 4b to 4e of the lens member 2, the component storage portion 10 that stores the substrate 11 in the lens member 2 becomes a sealed space. End up. Therefore, when the LED 3 and the surrounding electronic components generate heat when the LED is lit, there is no escape place of heat, and the LED 3 accumulates in the sealed space, and the heat generation of the LED 3 is promoted. Since the LED 3 has a characteristic that the illuminance decreases as the temperature rises, when the storage space of the substrate 11 is sealed, there is a concern that the illuminance decreases due to heat accumulated in the sealed space.

しかし、本例の場合は、LED点灯時にLED灯具1に発生する熱をレンズ部材2の外部に逃がすために、レンズ部材2の側壁5a,5bに放熱孔22,23を形成したり、基板11をアルミ製基材25により形成したり、基板11に銅棒28,29を取り付けたり、抵抗14,15を空中配線構造としたりする。このため、LED3やその周辺の電子部品に発生した熱が、効果的に部品収納部10の外部に逃がされるので、LED3の発熱が抑制される。よって、LED3の照度が明るい状態で確保される。   However, in the case of this example, in order to release the heat generated in the LED lamp 1 to the outside of the lens member 2 when the LED is lit, the heat radiation holes 22 and 23 are formed in the side walls 5a and 5b of the lens member 2, or the substrate 11 Are formed of an aluminum base material 25, copper bars 28 and 29 are attached to the substrate 11, and the resistors 14 and 15 are formed in an air wiring structure. For this reason, the heat generated in the LED 3 and its surrounding electronic components is effectively released to the outside of the component storage unit 10, so that the heat generation of the LED 3 is suppressed. Therefore, the illuminance of the LED 3 is ensured in a bright state.

本実施形態の構成によれば、以下に記載の効果を得ることができる。
(1)LED灯具1の本体部分をレンズ部材2により形成し、LED灯具1の点灯時には、LED3の照射光をレンズ部材2のレンズ部16に通して拡散させた後、この光を照明として拡散して車内に照射する。このため、LED3の光には指向性があるが、レンズ部16を通すことで広範囲に広がる光として照射することが可能となるので、LED灯具1の照度を高くすることができる。ところで、LED3の光照射経路上にレンズ部16を配置し、その周囲をアッパーケース4の側壁4b〜4eで囲うと、LED灯具1の部品収納部10は略密閉空間となって点灯時の発生熱が部品収納部10に溜まり、この熱でLED3が発熱し易くなる。しかし、本例の場合には、放熱孔22,23、アルミ製基板、銅棒28,29、空中配線構造などの発熱対策を施したので、LED3の発熱を軽減することもできる。よって、LED灯具1の照度確保と、LED3の発熱軽減とを両立することができる。
According to the configuration of the present embodiment, the following effects can be obtained.
(1) The main body portion of the LED lamp 1 is formed by the lens member 2, and when the LED lamp 1 is turned on, the light emitted from the LED 3 is diffused through the lens portion 16 of the lens member 2 and then diffused as illumination. Then irradiate the car. For this reason, although the light of LED3 has directivity, since it becomes possible to irradiate as light which spreads widely through lens part 16, the illuminance of LED lamp 1 can be made high. By the way, when the lens portion 16 is arranged on the light irradiation path of the LED 3 and the periphery thereof is surrounded by the side walls 4b to 4e of the upper case 4, the component storage portion 10 of the LED lamp 1 becomes a substantially sealed space and is generated at the time of lighting. Heat accumulates in the component storage unit 10, and the LED 3 easily generates heat due to this heat. However, in the case of this example, since heat generation measures such as the heat radiation holes 22 and 23, the aluminum substrate, the copper rods 28 and 29, and the air wiring structure are taken, the heat generation of the LED 3 can be reduced. Therefore, it is possible to achieve both ensuring the illuminance of the LED lamp 1 and reducing the heat generation of the LED 3.

(2)LED灯具1の本体ケース自体をレンズ部材2により形成したので、LED灯具1のケースとレンズとを一体化することが可能となる。よって、取り扱う部品が少なくすみ、部品の組付工数も削減することができる。   (2) Since the main body case of the LED lamp 1 is formed by the lens member 2, the case of the LED lamp 1 and the lens can be integrated. Therefore, it is possible to reduce the number of parts to be handled and reduce the number of assembling steps for the parts.

(3)発熱対策として基板11をアルミ製基板とした場合、基板11の一部材によってLED3(周辺の素子も含む)の発生熱を放熱することが可能となるので、部品点数を増やすことなくLED3を放熱することができる。   (3) When the substrate 11 is an aluminum substrate as a countermeasure against heat generation, the generated heat of the LED 3 (including peripheral elements) can be radiated by one member of the substrate 11, so that the LED 3 is not increased without increasing the number of components. Can be dissipated.

(4)発熱対策として基板11に銅棒28,29を取り付けた場合、銅棒28,29という外気に触れる金属体によってLED3(周辺の素子も含む)の発生熱を放熱することが可能となるので、LED放熱をより効率よく行うことができる。また、銅棒28,29は、基板11上の電子部品と電気接触しないように絶縁層30を介して基板11に固定され、その反対側が口金6,7に各々接続されているため、LED3(周辺の素子も含む)の発生熱は、熱伝導によって口金6,7に伝えられ放熱される。   (4) When the copper rods 28 and 29 are attached to the substrate 11 as a countermeasure against heat generation, it is possible to dissipate the heat generated by the LED 3 (including peripheral elements) by the copper rods 28 and 29 that touch the outside air. Therefore, LED heat radiation can be performed more efficiently. Further, since the copper bars 28 and 29 are fixed to the substrate 11 through the insulating layer 30 so as not to make electrical contact with the electronic components on the substrate 11, and the opposite sides thereof are connected to the caps 6 and 7, respectively, the LED 3 ( The generated heat (including peripheral elements) is transmitted to the caps 6 and 7 by heat conduction and dissipated.

(5)発熱対策としてレンズ部材2に放熱孔22,23を形成した場合、LED点灯時に部品収納部10に溜まった熱を、LED灯具1の外部に放出することが可能となる。よって、発生熱を灯具外に放出するという放熱効率の高い形式(対流放熱)によって、LED放熱を行うことができる。   (5) When the heat radiating holes 22 and 23 are formed in the lens member 2 as a countermeasure against heat generation, the heat accumulated in the component housing portion 10 when the LED is lit can be released to the outside of the LED lamp 1. Therefore, LED heat can be dissipated by a form with high heat dissipation efficiency (convection heat dissipation) in which generated heat is released outside the lamp.

(6)発熱対策として空中配線構造を使用した場合、LED点灯時に抵抗14,15が発熱しても、この熱が基板11、ひいてはLED3に至り難くなる。よって、抵抗14,15に生じた熱が結果としてLED3に至り難くなるので、LED3をより発熱し難くすることができる。   (6) When an aerial wiring structure is used as a countermeasure against heat generation, even if the resistors 14 and 15 generate heat when the LED is lit, this heat does not easily reach the substrate 11 and thus the LED 3. Therefore, since the heat generated in the resistors 14 and 15 does not reach the LED 3 as a result, the LED 3 can be made more difficult to generate heat.

(7)照度不足対策として、レンズ部16の円弧状突部17の曲率を大きく設定したので、LED3の光をより広範囲に拡散することができる。よって、LED灯具1の照明が照度不足とならずに済み、高い照明照度を確保することができる。   (7) Since the curvature of the arc-shaped protrusion 17 of the lens unit 16 is set large as a measure for insufficient illuminance, the light of the LED 3 can be diffused in a wider range. Therefore, the illumination of the LED lamp 1 is not required to be insufficient in illuminance, and high illumination illuminance can be ensured.

(8)LED3に大電流を流してLED3を高い照度で照明させる場合、LED灯具1に定電流素子13を搭載すれば、電流値が一定に抑えられ、安定した照明が可能である。しかし、これに相反して定電流IC13は熱を持ち易く、定電流IC13の熱がLED3に悪影響を与えないとも言えない。そこで、本例のような発熱対策を講じれば、定電流IC13が積極的に放熱されるので、定電流素子13を搭載してもその熱がLED3に至り難いという点で、非常に有益であると言える。   (8) When a large current is passed through the LED 3 to illuminate the LED 3 with high illuminance, if the constant current element 13 is mounted on the LED lamp 1, the current value can be kept constant, and stable illumination is possible. However, contrary to this, the constant current IC 13 tends to have heat, and it cannot be said that the heat of the constant current IC 13 does not adversely affect the LED 3. Therefore, if the heat generation countermeasure as in this example is taken, the constant current IC 13 is actively dissipated, so that even if the constant current element 13 is mounted, it is very beneficial in that the heat does not easily reach the LED 3. It can be said.

(9)LEDへの電流制限を抵抗14,15のみとした場合、電源電圧に比例してLED3に流れる電流が増えるため、高照度でLED3を点灯させようとすると、LED自体の発熱が大きくなる。また、抵抗14,15自体に流れる電流も増加するので、抵抗自体の発熱も増加し、LED3の温度上昇が顕著になる。しかし、定電流素子13の場合には、電源電圧が高くなってもLED3に流れる電流は一定のため、LED3の発熱も一定となり、電源電圧変動に対して発熱が抑えられることになる。   (9) If the current limit to the LED is limited to the resistors 14 and 15, the current flowing through the LED 3 increases in proportion to the power supply voltage. Therefore, when the LED 3 is turned on with high illuminance, the LED itself generates more heat. . In addition, since the current flowing through the resistors 14 and 15 itself increases, the heat generated by the resistors themselves increases, and the temperature rise of the LED 3 becomes remarkable. However, in the case of the constant current element 13, since the current flowing through the LED 3 is constant even when the power supply voltage is increased, the heat generation of the LED 3 is also constant, and the heat generation is suppressed against fluctuations in the power supply voltage.

(10)ロアケース5に放熱孔22,23及び斜面部24の両方を設けたので、ロアケース5の重量をより減らせることになる。よって、LED灯具1を車体に取り付けた際の重心をより安定させることが可能となるので、取り付け状態においてLED灯具1を軸O回りに沿って一層回転し難くすることができる。   (10) Since both the heat radiation holes 22 and 23 and the inclined surface portion 24 are provided in the lower case 5, the weight of the lower case 5 can be further reduced. Therefore, the center of gravity when the LED lamp 1 is attached to the vehicle body can be further stabilized, so that the LED lamp 1 can be made more difficult to rotate along the axis O in the attached state.

なお、舟形LED灯具1は上記構成に限らず、変形例を以下に列記する。
・図11に示すように、レンズ部16の表面に、半円状の突部41を形成してもよい。また、レンズ部16の灯具幅方向Xの両側に、LED3の光を外部に引き出すための一対の逃げ部42,42を形成してもよい。さらに、レンズ部材2の上壁4aを、口金6,7よりも低く形成してもよい。
In addition, the boat-shaped LED lamp 1 is not limited to the above configuration, and modifications are listed below.
As shown in FIG. 11, a semicircular protrusion 41 may be formed on the surface of the lens portion 16. Moreover, you may form a pair of escape parts 42 and 42 for drawing out the light of LED3 outside on the both sides of the lamp | ramp part width direction X of the lens part 16. FIG. Further, the upper wall 4 a of the lens member 2 may be formed lower than the caps 6 and 7.

・図12に示すように、図11の形状のLED灯具1においてLED3を複数配置してもよい。図12は、2つのLED3,3を灯具幅方向X(横向き)に並び配置した例である。   -As shown in FIG. 12, you may arrange | position multiple LED3 in the LED lamp 1 of the shape of FIG. FIG. 12 shows an example in which two LEDs 3 and 3 are arranged in the lamp width direction X (lateral direction).

・図13に示すように、図11の形状のLED灯具1においてLED3を複数配置する場合、LED3を灯具長さ方向Y(縦向き)に配置してもよい。
・図14に示すように、図11の形状のLED灯具1(LED3が1つの例)において、レンズ部16の表面に半円状の突部41を形成しなくてもよい。
As shown in FIG. 13, when a plurality of LEDs 3 are arranged in the LED lamp 1 having the shape shown in FIG. 11, the LEDs 3 may be arranged in the lamp length direction Y (vertical direction).
As shown in FIG. 14, in the LED lamp 1 having the shape of FIG. 11 (one LED 3 is an example), it is not necessary to form the semicircular protrusion 41 on the surface of the lens portion 16.

・図15に示すように、レンズ部材2の胴体形状を、斜面部24のない単なる断面四角形状としてもよい。
・図16に示すように、レンズ部材2の胴体形状を、断面円形状としてもよい。
As shown in FIG. 15, the body shape of the lens member 2 may be a simple cross-sectional square shape without the slope portion 24.
As shown in FIG. 16, the body shape of the lens member 2 may be a circular cross section.

・図17に示すように、レンズ部材2の胴体形状を断面円形状とした場合、レンズ部16の表面から、図16に示す突部41を省略した形状としてもよい。
(第2実施形態)
次に、第2実施形態を図18〜図20に従って説明する。なお、本例は、LED灯具のタイプ(型)を、第1実施形態の舟形からウェッジ型に変更したのみの構成である。よって、第1実施形態と同一箇所は同一符号を付して詳しい説明を省略し、異なる部分についてのみ説明する。
As shown in FIG. 17, when the body shape of the lens member 2 is a circular cross section, the protrusion 41 shown in FIG. 16 may be omitted from the surface of the lens portion 16.
(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. In addition, this example is the structure which changed only the type (type | mold) of the LED lamp from the boat shape of 1st Embodiment to the wedge type | mold. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and only different parts will be described.

図18及び図19に示すように、ウェッジ型のLED灯具51には、LED灯具51を取り付け先に接続する際の接続箇所として樹脂製のウェッジベース52が設けられている。ウェッジベース52には、円筒状のレンズ部材2を係入するための筒状の取付部53と、基板11(図19参照)から延びる一対の接続端子21,21の係止箇所となる扁平部54とが設けられている。   As shown in FIGS. 18 and 19, the wedge-type LED lamp 51 is provided with a resin wedge base 52 as a connection location when the LED lamp 51 is connected to an attachment destination. The wedge base 52 has a cylindrical mounting portion 53 for engaging the cylindrical lens member 2 and a flat portion serving as a locking portion for the pair of connection terminals 21 and 21 extending from the substrate 11 (see FIG. 19). 54 is provided.

基板11の一対の接続端子21,21は、扁平部54の通し孔54a,54aから引き出され、その後、手前に折り返されることにより、これらが給電部55,55として扁平部54に係止されている。なお、給電部55が給電端子を構成する。   The pair of connection terminals 21, 21 of the substrate 11 are pulled out from the through holes 54 a, 54 a of the flat part 54, and then folded back toward the front, so that they are locked to the flat part 54 as power supply parts 55, 55. Yes. The power feeding unit 55 constitutes a power feeding terminal.

レンズ部材2は、根元の周縁を取付部53の内部に係入することによってウェッジベース52に取り付け固定されている。レンズ部材2には、LED3の光の一部が出射される円筒状の筒部56と、この筒部56の上部に形成されたレンズ部57とが設けられている。レンズ部57は、外表面に形成された断面円弧状突部からなる。レンズ部57は、筒部56と同軸上に配置されるとともに、筒部56よりも小径に形成されている。よって、レンズ部材2には、筒部56とレンズ部57との境面に段部60が周方向に亘り一帯に形成されている。なお、レンズ部57がレンズ及び照度確保手段を構成する。   The lens member 2 is attached and fixed to the wedge base 52 by engaging the periphery of the base into the attachment portion 53. The lens member 2 is provided with a cylindrical tube portion 56 from which a part of the light of the LED 3 is emitted, and a lens portion 57 formed on the upper portion of the tube portion 56. The lens part 57 consists of a cross-section arc-shaped protrusion formed on the outer surface. The lens portion 57 is arranged coaxially with the cylindrical portion 56 and is formed with a smaller diameter than the cylindrical portion 56. Therefore, the lens member 2 is formed with a stepped portion 60 at the boundary surface between the cylindrical portion 56 and the lens portion 57 over the circumferential direction. The lens unit 57 constitutes a lens and illuminance securing means.

図20に示すように、基板11は、ウェッジベース52の内部に形成された部品収納部61に嵌り込む状態で取り付けられている。基板11は、実装面にLED3が1つ取り付けられ、部品収納部61内において横向きに配置されている。LED3が点灯すると、LED3の照射光がレンズ部16から拡散して引き出され、これが照明として車内に照射される。なお、部品収納部61が収納空間を構成する。   As shown in FIG. 20, the substrate 11 is attached in a state of being fitted into a component storage portion 61 formed inside the wedge base 52. The substrate 11 has one LED 3 attached to the mounting surface and is disposed sideways in the component storage unit 61. When the LED 3 is turned on, the light emitted from the LED 3 is diffused and drawn out from the lens unit 16, and this is irradiated into the vehicle as illumination. The component storage unit 61 constitutes a storage space.

本例のウェッジ型LED灯具51は、図20に示すように、発熱対策として抵抗14,15が空中配線されている。また、照度確保対策としては、レンズ部57の外面に円弧状突部が形成され、この突部の曲率が大きめに設定されている。よって、この種のウェッジ型LED灯具51でも、レンズ部57に光を通して照明するので、照明の照度を確保することが可能となる。また、抵抗14,15を空中配線とするので、LED点灯時に抵抗14,15に発生する熱がLED3に伝わり難くなるので、LED3の発熱を抑制することが可能となる。   As shown in FIG. 20, the wedge-type LED lamp 51 of this example has resistors 14 and 15 wired in the air as a countermeasure against heat generation. As a measure for ensuring illuminance, an arc-shaped protrusion is formed on the outer surface of the lens portion 57, and the curvature of the protrusion is set to be large. Therefore, even with this type of wedge-type LED lamp 51, the lens portion 57 is illuminated with light, so that the illumination intensity can be ensured. In addition, since the resistors 14 and 15 are aerial wirings, heat generated in the resistors 14 and 15 when the LEDs are lit becomes difficult to be transmitted to the LED 3, and thus heat generation of the LEDs 3 can be suppressed.

本実施形態の構成によれば、第1実施形態に記載の(1)〜(10)に加え、以下の効果を得ることができる。
(11)ウェッジ型LED灯具51でも、LED灯具1の照度確保と、LED3の発熱軽減とを両立することができる。
According to the configuration of the present embodiment, the following effects can be obtained in addition to (1) to (10) described in the first embodiment.
(11) The wedge-type LED lamp 51 can also achieve both the illuminance of the LED lamp 1 and the reduced heat generation of the LED 3.

なお、実施形態はこれまでに述べた構成に限らず、以下の態様に変更してもよい。
・第1及び第2実施形態において、発熱対策は、放熱孔22,23を形成する対策、アルミ製基板を使用する対策、銅棒を基板11に取り付ける対策、抵抗14,15を空中配線構造とする対策の全てを用いることに限定されない。つまり、これら対策のうち少なくとも1つを備えていればよい。
Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
In the first and second embodiments, the heat generation measures are the measures to form the heat radiation holes 22 and 23, the measures to use the aluminum substrate, the measures to attach the copper rod to the substrate 11, and the resistors 14 and 15 to the air wiring structure. It is not limited to using all of the measures to do. That is, at least one of these countermeasures may be provided.

・第1及び第2実施形態において、LED灯具1,51には、発熱対策及び照度不足対策の両方が施されることに限らず、少なくとも一方が形成されていればよい。
・第1実施形態において、放熱用金属は、図21に示すように、例えば突出片11dに係止されるリング状形状としてもよい。
In the first and second embodiments, the LED lamps 1 and 51 are not limited to both countermeasures for heat generation and illuminance deficiencies, and it is sufficient that at least one of them is formed.
-In 1st Embodiment, as shown in FIG. 21, the metal for heat dissipation is good also as a ring shape latched by the protrusion piece 11d, for example.

・第1及び第2実施形態において、放熱手段は、図22(a)に示すように、例えば基板11に取り付けた金属板71を放熱孔22,23から外部に露出させる構造としてもよい。また、図22(b)に示すように、金属板71を略90度折り曲げて、金属板71がLED灯具1の側部で邪魔にならないようにしてもよい。さらに、図22(c)に示すように、金属板71の表面(表裏両方も可)に凹凸部71aを設けてフィン形状とすることにより、空気に触れる面積を増やして、高い冷却効果を確保してもよい。   -In 1st and 2nd embodiment, as shown to Fig.22 (a), a heat radiating means is good also as a structure which exposes the metal plate 71 attached, for example to the board | substrate 11, from the heat radiating holes 22 and 23 outside. Further, as shown in FIG. 22B, the metal plate 71 may be bent approximately 90 degrees so that the metal plate 71 does not get in the way of the side of the LED lamp 1. Furthermore, as shown in FIG. 22 (c), the surface of the metal plate 71 (both front and back is acceptable) is provided with a concave and convex portion 71a to form a fin shape, thereby increasing the area in contact with air and ensuring a high cooling effect. May be.

・第1実施形態において、図23に示すように、斜面部24を放熱孔22,23よりも外側に飛び出す形状としてもよい。この場合、斜面部24に結露が付着して流れ落ちる場合であっても、結露が放熱孔22,23に流入し難くなる。よって、基板11を水滴付着から保護することができる。   -In 1st Embodiment, as shown in FIG. 23, it is good also as a shape which protrudes the slope part 24 on the outer side rather than the thermal radiation holes 22 and 23. FIG. In this case, even if condensation adheres to the slope portion 24 and flows down, the condensation hardly flows into the heat radiation holes 22 and 23. Therefore, the substrate 11 can be protected from water droplet adhesion.

・第1及び第2実施形態において、図24に示すように、基板11上のLED3の一列を省略し、この部分に放熱用の銅棒72を取り付けてもよい。この場合、LED3の搭載個数を減らした際の空きスペースを、銅棒72の配置箇所として有効利用することができる。   -In 1st and 2nd embodiment, as shown in FIG. 24, the row | line | column of LED3 on the board | substrate 11 may be abbreviate | omitted, and the copper rod 72 for thermal radiation may be attached to this part. In this case, the empty space when the number of mounted LEDs 3 is reduced can be effectively used as the location where the copper rod 72 is disposed.

・第1実施形態において、放熱孔22,23の形状は、図25に示すように孔が水平面に対して斜めを向くものでもよい。この場合、放熱孔22,23が水平方向に大きく開口しなくなるので、放熱孔22,23から埃がレンズ部材2内へ侵入する状況を生じ難くすることができる。また、取付け状態においてLED灯具1が軸Lの回りに回転して、斜面部24を結露が流れ落ちることになっても、放熱孔22,23の孔内面が斜面となっているため、結露が放熱孔22,23の内部に流入し難くなる。よって、放熱孔22,23からの結露侵入も抑制することができる。   In the first embodiment, the shape of the heat radiation holes 22 and 23 may be such that the holes are inclined with respect to the horizontal plane as shown in FIG. In this case, since the heat radiation holes 22 and 23 do not open greatly in the horizontal direction, it is possible to make it difficult for dust to enter the lens member 2 from the heat radiation holes 22 and 23. In addition, even when the LED lamp 1 rotates around the axis L in the mounted state and the dew condensation flows down the slope portion 24, the dew condensation is radiated because the inner surfaces of the heat radiation holes 22 and 23 are inclined. It becomes difficult to flow into the holes 22 and 23. Therefore, it is possible to suppress the intrusion of condensation from the heat radiation holes 22 and 23.

・第1及び第2実施形態において、レンズ部材2は、レンズ機能を持つ形状のものに限定されず、例えば光の照射面が単にフラットとなったレンズ機能を持たない形状のものでもよい。ところで、従来のLED灯具においては、LED灯具に基板を覆う箱状のケースがない、つまり、基板の両端に一対の金口が設けられただけのような構造をとるものや、図26に示すように、ケース本体82の上面82aにおいて大きく開く開口穴82bを形成するものがあった。そこで、単なる略箱状のケース内に基板11を収納して基板を覆うだけの構造でも、基板上の各部品に埃が付着したり、結露が生じて導通したりするという不具合を防止することが可能になるので、この構造でも非常に顕著な作用効果を得ることが可能となる。また、LED灯具の流通や取付時において、誤って基板を破損するという問題があったが、ケースによって基板全体を覆うことによって取り扱いが容易にもなる。しかしながら、このような構造をとる場合、ケース内に熱が溜まることを要因とするLED3の温度上昇の問題があった。よって、レンズ機能を持たないLED灯具に本例の放熱対策を講じても、LED3の温度上昇を抑えることができるという点で、非常に有益であると言える。また、この場合も、放熱孔22,23を例えば図25に示す形状とすれば、結露対策や埃侵入対策も可能となる。   In the first and second embodiments, the lens member 2 is not limited to a shape having a lens function, and may be, for example, a shape having no lens function in which a light irradiation surface is simply flat. By the way, in the conventional LED lamp, there is no box-shaped case which covers a board | substrate in an LED lamp, that is, it takes the structure where only a pair of metal caps were provided in the both ends of a board | substrate, or it shows in FIG. As described above, there is a case in which an opening hole 82b that is greatly opened on the upper surface 82a of the case main body 82 is formed. Therefore, even when the substrate 11 is simply housed in a substantially box-shaped case and covers the substrate, it is possible to prevent problems such as dust adhering to each component on the substrate and conduction due to condensation. Therefore, even with this structure, it is possible to obtain a very remarkable effect. Further, there has been a problem that the substrate is accidentally damaged at the time of distribution and installation of the LED lamp, but the entire substrate is covered with the case, so that the handling becomes easy. However, when such a structure is adopted, there is a problem that the temperature of the LED 3 rises due to heat accumulated in the case. Therefore, it can be said that even if the heat dissipation countermeasure of this example is taken for an LED lamp that does not have a lens function, it is very useful in that the temperature rise of the LED 3 can be suppressed. Also in this case, if the heat radiation holes 22 and 23 have the shape shown in FIG. 25, for example, countermeasures against condensation and dust intrusion can be taken.

・第1及び第2実施形態において、レンズ部16,57は、レンズ部材2と一体であることに限定されず、これとは別部材であってもよい。この場合、レンズ部16,57のみを透明とし、レンズ部16,57を支持するケース相当部分を非透明の部材としてもよい。   In the first and second embodiments, the lens portions 16 and 57 are not limited to being integrated with the lens member 2, and may be separate members. In this case, only the lens portions 16 and 57 may be transparent, and a portion corresponding to the case that supports the lens portions 16 and 57 may be a non-transparent member.

・第1及び第2実施形態において、レンズ部材2の透明とは、純粋な透明に限らず、例えば乳白色など透明ではあるが色を有するものも広義として含む。
・第1実施形態において、レンズ部材2は、複数部品から形成されることに限らず、例えば1つの部品からなるものでもよい。
-In 1st and 2nd embodiment, the transparency of the lens member 2 is not restricted to pure transparency, For example, what is transparent, such as milky white, but has a color is included in a broad sense.
In the first embodiment, the lens member 2 is not limited to being formed from a plurality of parts, and may be formed from a single part, for example.

・第1実施形態において、口金6,7は、円筒形状に限らず、例えばピン形状としてもよい。
・第1及び第2実施形態において、LED3は、広義として照射光に指向性を持つ光源を広義として含む。
In the first embodiment, the caps 6 and 7 are not limited to a cylindrical shape, and may be a pin shape, for example.
-In 1st and 2nd embodiment, LED3 contains the light source which has directivity to irradiation light as a broad sense.

・第1及び第2実施形態において、LED3の発光色は、無職透明に限定されず、白、赤、緑、青など、種々の色が採用可能である。
・第1及び第2実施形態において、レンズ部16、57の内面は、表面が円弧状に形成されることに限らず、例えば断面三角形状など、所望する拡散効果に合わせて適宜変更可能である。
-In 1st and 2nd embodiment, the luminescent color of LED3 is not limited to unemployed transparency, Various colors, such as white, red, green, blue, are employable.
In the first and second embodiments, the inner surfaces of the lens portions 16 and 57 are not limited to being formed in a circular arc shape, and can be appropriately changed according to a desired diffusion effect such as a triangular cross section. .

・第1及び第2実施形態において、円弧状突部17,59の表面に溝を設けて、光の拡散方向を適宜変更することも可能である。
・第1実施形態において、レンズ部材2と口金6(7)とは、ほぼ同一大きさの部品に限定されず、例えばレンズ部材2が口金6(7)よりも大きな部品サイズをとるものでもよい。
-In 1st and 2nd embodiment, it is also possible to provide a groove | channel on the surface of the circular-arc-shaped protrusions 17 and 59, and to change suitably the spreading | diffusion direction of light.
-In 1st Embodiment, the lens member 2 and the nozzle | cap | die 6 (7) are not limited to components of substantially the same size, For example, the lens member 2 may take a larger component size than the nozzle | cap | die 6 (7). .

・第1実施形態において、放熱用金属材は、銅に限らず、例えばアルミ等の他の材質を使用してもよい。
・第1実施形態において、放熱孔22,23は、側壁5a,5bに形成されることに限定されず、例えば側壁5c,5d(図2等参照)に形成してもよい。また、放熱孔22,23は、ロアケース5に形成されることに限らず、例えばアッパーケース4に形成されたり、両方に亘り形成されたりしてもよい。
-In 1st Embodiment, the metal material for heat dissipation is not restricted to copper, For example, you may use other materials, such as aluminum.
-In 1st Embodiment, the thermal radiation holes 22 and 23 are not limited to being formed in the side walls 5a and 5b, For example, you may form in the side walls 5c and 5d (refer FIG. 2 etc.). Further, the heat radiating holes 22 and 23 are not limited to being formed in the lower case 5, and may be formed in the upper case 4, or may be formed over both.

・第2実施形態において、図20の破線に示すように、内面のみならず外面も半球状に盛り上がる形状とし、外側を外側円弧状突部58とし、内側を内側円弧状突部59としてもよい。   In the second embodiment, as shown by a broken line in FIG. 20, not only the inner surface but also the outer surface may have a hemispherical shape, the outside may be an outer arc-shaped protrusion 58, and the inner may be an inner arc-shaped protrusion 59. .

・第1及び第2実施形態において、空中配線構造は、素子が基板11から距離をとって浮くものであれば、どのような配置構造でもよい。
・第1及び第2実施形態において、LED灯具1は、舟形やウェッジ型に限らず、光源をLED3とするものであれば、どのような型でもよい。
In the first and second embodiments, the aerial wiring structure may be any arrangement structure as long as the element floats away from the substrate 11.
In the first and second embodiments, the LED lamp 1 is not limited to a boat shape or a wedge type, and may be any type as long as the light source is an LED 3.

・第1及び第2実施形態において、LED灯具1,51は、車内ルームランプに使用されることに限定されず、他の装置や機器に応用してもよい。
-In 1st and 2nd embodiment, LED lamp 1,51 is not limited to being used for a vehicle interior lamp, You may apply to another apparatus and apparatus.

・第2実施形態において、図26及び図27に示すような構造にしてもよい。図26(a)は本例の正面図、図26(b)は本例の平面図である。また、図27(a)は、図26(b)のC−O−D断面図、図27(b)は、図26(b)のA−O−B断面図、図27(c)は、図27(a)及び(b)図中の矢印C方向から見た場合の基板11のみを示す図である。なお、図27(a)及び(b)において、後述するレンズ部材2の内面に形成されたレンズカット部18を省略して示している。   -In 2nd Embodiment, you may make it a structure as shown in FIG.26 and FIG.27. FIG. 26A is a front view of this example, and FIG. 26B is a plan view of this example. 27A is a cross-sectional view taken along the line C-O-D in FIG. 26B, FIG. 27B is a cross-sectional view taken along the line A-O-B in FIG. 26B, and FIG. FIGS. 27A and 27B are diagrams showing only the substrate 11 when viewed from the direction of arrow C in FIGS. 27A and 27B, the lens cut portion 18 formed on the inner surface of the lens member 2 described later is omitted.

第2実施形態において、レンズ部材2は、根元の周縁を取付部53の内部に係入することによってウェッジベース52に取り付け固定されていたが、本例では、図26(a)に示すように、基板11を、レンズ部材2(筒部56)と取付部53とで挟持して固定している。   In the second embodiment, the lens member 2 is attached and fixed to the wedge base 52 by engaging the periphery of the base into the attachment portion 53. In this example, as shown in FIG. The substrate 11 is sandwiched and fixed between the lens member 2 (cylinder portion 56) and the attachment portion 53.

即ち、図27(c)に示すように、基板11にはその周縁に4カ所の切り欠き部11cを設けている。また、図27(a)に示すように、筒部56の下部周縁には、4本の係入片56aを設けている。また、筒部56の下部周縁側壁には、4カ所に内部と外部を連通するように切り欠き部56bを設けている。   That is, as shown in FIG. 27C, the substrate 11 is provided with four notches 11c on the periphery thereof. Further, as shown in FIG. 27A, four engaging pieces 56 a are provided on the lower peripheral edge of the cylindrical portion 56. Further, on the lower peripheral side wall of the cylindrical portion 56, notches 56b are provided at four locations so as to communicate the inside and the outside.

なお、レンズ部材2の内面には、レンズカット部18が設けられている。このレンズカット部18は、レンズ部材2の高さ方向(図26(a)参照)に沿って複数の溝19を切ることによって形成され、この溝19と突20とが交互に並ぶ形状になっている。このレンズカット部18によって、側壁4b〜4eの外面からは内部にある部品が見えないようになっており、意匠性が確保されている。また、上述のように、円弧状突部57で反射された一部の光が、側壁から外側に向かって照射される際に、このレンズカット部18の光の拡散効果によって側壁周囲に亘って一様に光が照射される。   A lens cut portion 18 is provided on the inner surface of the lens member 2. The lens cut portion 18 is formed by cutting a plurality of grooves 19 along the height direction of the lens member 2 (see FIG. 26A), and the grooves 19 and the protrusions 20 are alternately arranged. ing. The lens cut portion 18 prevents the internal components from being seen from the outer surfaces of the side walls 4b to 4e, thereby ensuring design. Further, as described above, when a part of the light reflected by the arc-shaped protrusion 57 is irradiated from the side wall toward the outside, the light diffusing effect of the lens cut portion 18 extends around the side wall. Light is irradiated uniformly.

まず、この基板11を取付部53の周縁上部に基板11の互いの円弧周縁を合わせるようにして載置する。次に、基板11の周縁11dの4カ所の切り欠き部11cによって形成された孔(11c)に、接着剤を塗布した筒部56の係入片56aを挿入して取付部53と筒部56とを接着固定する(図27(b)参照)。つまり、基板11は、筒部56の下部周縁56cと取付部53の上部周縁53aとで挟持され固定される。なお、筒部56の側壁に設けられた切り欠き部56bは、筒部56の内外を連通する孔を形成する(図26(a)参照)。   First, the substrate 11 is placed on the upper periphery of the mounting portion 53 so that the circular arc periphery of the substrate 11 is aligned. Next, the engaging pieces 56a of the cylindrical portion 56 coated with an adhesive are inserted into the holes (11c) formed by the four notches 11c on the peripheral edge 11d of the substrate 11, and the mounting portion 53 and the cylindrical portion 56 are inserted. Are bonded and fixed (see FIG. 27B). That is, the substrate 11 is sandwiched and fixed between the lower peripheral edge 56 c of the cylindrical portion 56 and the upper peripheral edge 53 a of the attachment portion 53. In addition, the notch part 56b provided in the side wall of the cylinder part 56 forms the hole which connects the inside and outside of the cylinder part 56 (refer Fig.26 (a)).

第2実施形態においては、基板11の位置決めが容易ではなく、しかも、筒部56と取付部53との接合固定によって、LED基板が筒部56の内部に密閉されることによってLEDの温度上昇が懸念されていた。   In the second embodiment, the positioning of the substrate 11 is not easy, and the LED substrate is hermetically sealed inside the cylindrical portion 56 due to the joining and fixing of the cylindrical portion 56 and the mounting portion 53, thereby increasing the temperature of the LED. There was concern.

以上、本例によれば、基板11の位置決めが容易になされるとともに、筒部56(レンズ部2)の取り付けが容易になる。また、筒部56の側壁に設けられた切り欠き部56b(放熱手段)によって、筒部56の内外を連通する孔を形成したので、筒部56内外の空気の移動が起こり、LED3の温度上昇を抑えることができる。また、基板11の周縁11d(放熱手段)が外気と触れるため、基板11が冷却されることでLEDの温度上昇を抑えることができる。   As described above, according to this example, the substrate 11 can be easily positioned and the cylindrical portion 56 (lens portion 2) can be easily attached. Moreover, since the hole which connects the inside and outside of the cylinder part 56 was formed by the notch part 56b (heat radiation means) provided in the side wall of the cylinder part 56, the movement of the air inside and outside the cylinder part 56 occurred, and the temperature of the LED 3 increased. Can be suppressed. In addition, since the peripheral edge 11d (heat dissipating means) of the substrate 11 is in contact with the outside air, the temperature rise of the LED can be suppressed by cooling the substrate 11.

次に、上記実施形態及び別例から把握できる技術的思想について、それらの効果とともに以下に追記する。
(イ)本体部に光源としてLEDが取り付けられ、前記LEDの給電端子がウエッジベースに取り付け支持されたウェッジ型のLED灯具において、前記LEDの照射光を広範囲に広げて前記本体部の外部に放射するレンズと、前記LED点灯時に灯具に発生する熱を前記本体部の外部に逃がす放熱手段とを備えたことを特徴とするLED灯具。この構成によれば、このようなウェッジ型LED灯具であっても、照明の広範囲確保と、LEDの発熱軽減とを両立することが可能となる。
Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(A) In a wedge-type LED lamp in which an LED is attached as a light source to the main body, and the power supply terminal of the LED is attached to and supported on a wedge base, the irradiation light of the LED is spread over a wide range and radiated to the outside of the main body An LED lamp, comprising: a lens that performs heat dissipation, and heat dissipation means that releases heat generated in the lamp when the LED is lit to the outside of the main body. According to this configuration, even with such a wedge-type LED lamp, it is possible to achieve both a wide range of illumination and a reduction in LED heat generation.

(ロ)両端に一対の給電端子を有する本体部に光源としてLEDが取り付けられ、当該LEDの光によって周囲を照明するLED灯具において、前記LEDの照射光を広範囲に広げて前記本体部の外部に放射するレンズと、前記レンズの形状を加工して前記LEDの照射光をより広範囲に拡散させることにより、照明の照度を高く設定する照度確保手段とを備えたことを特徴とするLED灯具。ところで、LEDの光には指向性があるので、この種のLED灯具では、LEDの光をレンズによって拡散照射しないと、広範囲を照明できず、照度不足に陥る懸念がある。しかし、本構成では、LEDの光の拡散を促進する照度確保手段を設けたので、照度不足を解消することが可能となる。なお、この技術思想は、ウェッジ型にも応用可能である。   (B) In an LED lamp in which an LED is attached as a light source to a main body portion having a pair of power supply terminals at both ends, and the surroundings are illuminated by the light of the LED, the irradiation light of the LED is spread over a wide area to the outside of the main body portion An LED lamp comprising: a radiating lens; and an illuminance securing means for setting the illuminance of the illumination high by processing the shape of the lens and diffusing the irradiation light of the LED over a wider range. By the way, since the LED light has directivity, in this type of LED lamp, unless the LED light is diffused and irradiated by the lens, there is a concern that a wide area cannot be illuminated, resulting in insufficient illuminance. However, in this configuration, since the illuminance securing means for promoting the diffusion of the light of the LED is provided, it is possible to eliminate the illuminance shortage. This technical idea can also be applied to the wedge type.

(ハ)両端に一対の給電端子を有する本体部に光源としてLEDが取り付けられ、当該LEDの光によって周囲を照明するLED灯具において、前記本体部を形成する壁部によって、前記基板を周囲から囲むようにして収納する部品収納部と、前記LED点灯時に灯具に発生する熱を放熱する放熱手段とを備えたことを特徴とするLED灯具。ところで、例えばレンズ機能のない本体部の内部にLEDを収納すると、熱が本体部外に逃げず、LEDが温度上昇する懸念に繋がり、これが照度低下を招く。しかし、本構成によれば、このような形状をとるLED灯具であっても、放熱手段によって点灯時の発生熱を放熱することが可能となるので、LEDの過度な温度上昇を抑制することができる。なお、この技術思想は、ウェッジ型にも応用可能である。   (C) In an LED lamp in which an LED is attached as a light source to a main body having a pair of power supply terminals at both ends, and the surroundings are illuminated by the light of the LED, the substrate is surrounded from the periphery by a wall forming the main body. An LED lamp comprising: a component storage section for storing the lamp; and a heat radiating means for radiating heat generated in the lamp when the LED is lit. By the way, for example, when an LED is housed inside a main body without a lens function, heat does not escape to the outside of the main body, leading to a concern that the LED will rise in temperature, which leads to a decrease in illuminance. However, according to the present configuration, even with an LED lamp having such a shape, it is possible to dissipate the heat generated during lighting by the heat dissipating means, so that it is possible to suppress an excessive temperature rise of the LED. it can. This technical idea can also be applied to the wedge type.

(二)請求項7において、前記照度確保手段は、前記レンズの内面に突設された円弧状
突部である。
(2) In Claim 7, the illuminance securing means is an arc-shaped protrusion protruding from the inner surface of the lens.

1…LED灯具(舟形)、2…本体部としてのレンズ部材、3…LED、6,7…給電端子を構成する口金、10…収納空間を構成する部品収納部、11…基板、12…点灯回路、13…点灯回路の素子を構成する定電流IC、14,15…点灯回路の素子を構成する抵抗、16…レンズを構成するレンズ部、17…照度確保手段を構成する円弧状突部、22,23…放熱手段を構成する放熱孔、25…放熱手段を構成するアルミ製基材、28,29…放熱手段(放熱用金属材)を構成する銅棒、51…LED灯具(ウェッジ型)、55…給電端子を構成する給電部、57…レンズを構成するレンズ部、59…照度確保手段を構成する円弧状突部、61…収納空間を構成する部品収納部、72…放熱手段(放熱用金属材)を構成する銅棒。   DESCRIPTION OF SYMBOLS 1 ... LED lamp (boat shape), 2 ... Lens member as a main-body part, 3 ... LED, 6, 7 ... Base which comprises a feeding terminal, 10 ... Parts storage part which comprises storage space, 11 ... Board | substrate, 12 ... Lighting Circuit, 13 ... constant current IC that constitutes the element of the lighting circuit, 14, 15 ... resistor that constitutes the element of the lighting circuit, 16 ... lens part that constitutes the lens, 17 ... arc-shaped protrusion that constitutes the illuminance securing means, 22, 23 ... heat radiating holes constituting the heat radiating means, 25 ... aluminum base material constituting the heat radiating means, 28, 29 ... copper bars constituting the heat radiating means (heat radiating metal material), 51 ... LED lamp (wedge type) , 55... A power feeding part constituting a power feeding terminal, 57... A lens part constituting a lens, 59... Arc-shaped protrusion constituting an illuminance securing means, 61. Copper bar that constitutes a metal material.

Claims (7)

両端に一対の給電端子を有する本体部に光源としてLEDが取り付けられ、当該LEDの照射光によって周囲を照明するLED灯具において、
前記LEDの照射光を広範囲に広げて前記本体部の外部に放射するレンズと、
前記LED点灯時に灯具に発生する熱を放熱する放熱手段と
を備えたことを特徴とするLED灯具。
In an LED lamp in which an LED is attached as a light source to a main body having a pair of power supply terminals at both ends, and illuminates the surroundings with the irradiation light of the LED
A lens that spreads the light emitted from the LED over a wide area and radiates it outside the main body;
An LED lamp comprising: a heat dissipating means for dissipating heat generated in the lamp when the LED is turned on.
前記レンズは、前記本体部と一体の透明材により形成されている
ことを特徴とする請求項1に記載のLED灯具。
The LED lamp according to claim 1, wherein the lens is formed of a transparent material that is integral with the main body.
前記放熱手段は、前記LEDの基板として設けられたアルミ製基材である
ことを特徴とする請求項1又は2に記載のLED灯具。
The LED lamp according to claim 1 or 2, wherein the heat dissipation means is an aluminum base provided as a substrate of the LED.
前記放熱手段は、前記LEDの基板に取り付けられた放熱用金属材である
ことを特徴とする請求項1〜3のうちいずれか一項に記載のLED灯具。
4. The LED lamp according to claim 1, wherein the heat dissipating means is a heat dissipating metal material attached to a substrate of the LED.
前記放熱手段は、前記本体部において前記LEDを収納する収納空間を外部に導通する放熱孔である
ことを特徴とする請求項1〜4のうちいずれか一項に記載のLED灯具。
5. The LED lamp according to claim 1, wherein the heat dissipating means is a heat dissipating hole that conducts the storage space for storing the LED in the main body portion to the outside.
前記放熱手段は、前記LEDの点灯回路の素子を、基板から浮かして配線する空中配線構造である
ことを特徴とする請求項1〜5のうちいずれか一項に記載のLED灯具。
6. The LED lamp according to claim 1, wherein the heat dissipating means has an aerial wiring structure in which an element of the lighting circuit of the LED is floated and wired from a substrate.
前記レンズの形状を加工して前記LEDの照射光をより広範囲に拡散させることにより、照明の照度を高く設定する照度確保手段を備えた
ことを特徴とする請求項1〜6のうちいずれか一項に記載のLED灯具。
7. An illuminance securing means for setting a high illuminance of the illumination by processing the shape of the lens and diffusing the irradiation light of the LED over a wider range is provided. LED lamp according to item.
JP2010192067A 2010-04-09 2010-08-30 Led lighting fixture Pending JP2011230751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010192067A JP2011230751A (en) 2010-04-09 2010-08-30 Led lighting fixture

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2010090362 2010-04-09
JP2010090362 2010-04-09
JP2010192067A JP2011230751A (en) 2010-04-09 2010-08-30 Led lighting fixture

Publications (1)

Publication Number Publication Date
JP2011230751A true JP2011230751A (en) 2011-11-17

Family

ID=45320503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010192067A Pending JP2011230751A (en) 2010-04-09 2010-08-30 Led lighting fixture

Country Status (1)

Country Link
JP (1) JP2011230751A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014034778A1 (en) * 2012-08-31 2014-03-06 京セラ株式会社 Light irradiation apparatus, and printing apparatus
JP2015149198A (en) * 2014-02-06 2015-08-20 Ipf株式会社 LED bulb
CN104884861A (en) * 2012-12-27 2015-09-02 张永焕 Fuse-type vehicle flood lamp
JP2015530914A (en) * 2012-06-15 2015-10-29 ルーメンコア インコーポレイテッド Solid light source for photocuring
JP2018115798A (en) * 2017-01-18 2018-07-26 東芝ライフスタイル株式会社 refrigerator
JP2020177926A (en) * 2020-07-30 2020-10-29 アイリスオーヤマ株式会社 Led illuminating device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176476U (en) * 1984-05-01 1985-11-22 財団法人 日本交通管理技術協会 Light emitting diode indicator light
JPH0412209U (en) * 1990-05-21 1992-01-31
JPH10177901A (en) * 1996-12-19 1998-06-30 Hokuriku Electric Ind Co Ltd Electronic part
JP2002093206A (en) * 2000-09-18 2002-03-29 Stanley Electric Co Ltd Led signal light
JP2004241191A (en) * 2003-02-04 2004-08-26 Koito Mfg Co Ltd Lamp bulb with base
JP2007142173A (en) * 2005-11-18 2007-06-07 Koha Co Ltd Illuminator
WO2009025284A1 (en) * 2007-08-22 2009-02-26 Tokai Optical Co., Ltd. Lighting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176476U (en) * 1984-05-01 1985-11-22 財団法人 日本交通管理技術協会 Light emitting diode indicator light
JPH0412209U (en) * 1990-05-21 1992-01-31
JPH10177901A (en) * 1996-12-19 1998-06-30 Hokuriku Electric Ind Co Ltd Electronic part
JP2002093206A (en) * 2000-09-18 2002-03-29 Stanley Electric Co Ltd Led signal light
JP2004241191A (en) * 2003-02-04 2004-08-26 Koito Mfg Co Ltd Lamp bulb with base
JP2007142173A (en) * 2005-11-18 2007-06-07 Koha Co Ltd Illuminator
WO2009025284A1 (en) * 2007-08-22 2009-02-26 Tokai Optical Co., Ltd. Lighting device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015530914A (en) * 2012-06-15 2015-10-29 ルーメンコア インコーポレイテッド Solid light source for photocuring
WO2014034778A1 (en) * 2012-08-31 2014-03-06 京セラ株式会社 Light irradiation apparatus, and printing apparatus
US9371984B2 (en) 2012-08-31 2016-06-21 Kyocera Corporation Light irradiation apparatus and printing apparatus
JPWO2014034778A1 (en) * 2012-08-31 2016-08-08 京セラ株式会社 Light irradiation apparatus and printing apparatus
CN104884861A (en) * 2012-12-27 2015-09-02 张永焕 Fuse-type vehicle flood lamp
JP2016508283A (en) * 2012-12-27 2016-03-17 チャン,ヨガン Fuse type automotive lighting
CN104884861B (en) * 2012-12-27 2018-09-04 张永焕 Fusible headlamp
JP2015149198A (en) * 2014-02-06 2015-08-20 Ipf株式会社 LED bulb
JP2018115798A (en) * 2017-01-18 2018-07-26 東芝ライフスタイル株式会社 refrigerator
JP2020177926A (en) * 2020-07-30 2020-10-29 アイリスオーヤマ株式会社 Led illuminating device

Similar Documents

Publication Publication Date Title
JP5869088B2 (en) Lighting device
JP5320560B2 (en) Light source unit and lighting device
JP5999498B2 (en) LED and lighting device
ES2670869T3 (en) Flat lighting device
US20120300455A1 (en) Illumination Device
WO2009110181A1 (en) Illuminating lamp
US20100117100A1 (en) Light-emitting module and illumination device
JP2009129809A (en) Lighting system
JP4971530B2 (en) lamp
JP2011230751A (en) Led lighting fixture
JP5670936B2 (en) Lighting device
JP2017045951A (en) LED module and luminaire having the same
JP2014517447A (en) LED illuminating device having lower heat dissipation structure
US9752770B2 (en) Light-emitting diode light fixture with channel-type heat dissipation system
JP2011233635A (en) Illumination device with heat dissipation mechanism, and illumination apparatus
US20120195054A1 (en) Heat sink for an illumination device
JP2013069441A (en) Bulb type lighting device
JP5575624B2 (en) Lighting unit and lighting device
KR101319991B1 (en) Waterproof structure for led lamp
JP5291266B1 (en) lamp
JP5547595B2 (en) lamp
JP2016201210A (en) lamp
JP2010153101A (en) Bulb type lamp
JP2014165034A (en) Bulb type luminaire
JP2013020813A (en) Electric bulb

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100922

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130527

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140214

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140410

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140818