JP2004300798A - Flushmount type marker lamp and marker lamp device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flushmount type marker lamp and a marker lamp device, facilitating modulated light control, and relatively restraining increase in power consumption when the brightness of a marker lamp is heightened. <P>SOLUTION: This flushmount type marker lamp includes: a lamp body 1 having a light lead-out groove 1d disposed on the upper surface and obliquely directed upward and an internal space 1c communicating with the light lead-out groove; a prism 2 liquid-tightly disposed between the light lead-out groove and the internal space of the lamp body for regulating the optical path; and a light source unit 3 having a discharge lamp 3b, an electric lamp 3a or a light emitting diode element to radiate light and stored in the internal space of the lamp body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【００３４】
この放電灯点灯制御装置Ｃは、埋込形標識灯装置に供給される階調電流の電流値を検出する図示しない電流検出回路部と放電灯３ｂを付勢する安定器を備え、検出された電流値が本実施形態においては、６．６Ａ以上となっているときに、安定器を動作させ、また６．６Ａを下回っているときには、安定器の動作を停止させるように構成されている。なお、安定器が動作を開始する階調電流の電流値は、６．６Ａに限られるものではなく、適宜定めることができる。
【００３５】
ここで、安定器から放電灯３ｂに供給する電力は、ハロゲン電球３ａと放電灯３ｂとから放射される合計の光量が、所定の最大定格光束値となるように予め設定されている。
【００３６】
つまり、埋込形標識灯装置に６．６Ａの階調電流が供給されたとき、放電灯３ｂが点灯し、階調電流が小さいときには、ハロゲン電球３ａのみが点灯している。
【００３７】
なお、ハロゲン電球３ａは、埋込形標識灯装置に供給される階調電流により常時付勢され、したがって、階調電流に応じて調光点灯するように電気的に結線されている。
【００３８】
このように、安定器は、埋込形標識灯装置に供給される階調電流の電流値に応じてその出力が可変するものではなく、所定の電流値以上になったときに動作するものであるため、放電灯３ｂを調光したときに誘発され易い放電の不安定を生じさせることが防止できる。
【００３９】
したがって、本実施の形態によれば、従来どおりの標識灯用定電流電源に接続し、且つ標識灯の階調制御を容易に行え、また、標識灯の明るさを大きくしたときに、発光効率が相対的に高い放電灯が点灯するため、消費電力の増加を相対的に抑制することができる。
【００４０】
図７は、本発明の一実施の形態を示す埋込形標識灯装置に使用される曲線路面用灯体を示す斜視図および図８は、同じく平面図である。この曲線部用灯体は、滑走路または誘導路等の曲がり角である曲線部に設置させるものであり、平面上で１８０度の角度よりも狭い約１５０度位の角度をなして一対の光導出溝１ｄが配置されている。
【００４１】
そして、周辺部に形成された上部灯体１ａ、下部灯体１ｂおよび基台Ｂに取り付けるための４つの取付孔１ｇは、直線路面用灯体の配置と同じ位置に形成されている。
【００４２】
なお、他の構成は、直線路面用灯体と同じである。したがって、基台Ｂに対して取り付ける取付孔１ｇは、直線路面用および曲線路面用とも同じ位置に形成されているので、基台Ｂが共通して使用することができ、その分を製造コストを低減することができる。また、路面に施工する場合には、灯体と符合する専用の基台を考える必要がなく、施工性が向上する。
【００４３】
以上の実施形態においては、電球及び放電灯からの放射光を１つのリフレクタ３ｃを用いて反射集光させるものについて説明しているが、例えば各々の光源ごとにリフレクタを配設させてもよく、また、用途に応じてリフレクタの使用を省略しても良い。
【００４４】
また、電球３ａの代わりに、発光ダイオード素子を用いることもでき、さらには、電球又は発光ダイオードを用いた光源ユニットと別に放電灯を用いた第２の光源ユニットを灯体の内部に分離して収容させて、各々異なった光路規正用のプリズムに向けて光を放射させることもできる。この場合においては、これら光源ユニットと光路規正用のプリズムの間に配設され得る色補正用フィルタを、それぞれの光源の放射光色に応じて適宜選択することもできる。
【００４５】
【発明の効果】本発明によれば、調光制御が容易で、標識灯の明るさを大きくしたときに、消費電力の増加を相対的に抑制することのできる埋込形標識灯及び標識灯装置を提供することができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す埋込形標識灯装置に使用される直線路面用灯体を示す斜視図
【図２】同じく平面図
【図３】埋込形標識灯を基台に組み付けた状態における断面図
【図４】埋込形標識灯装置に使用される光源ユニットの平面図
【図５】同じく下部灯体の平面図
【図６】同じく基台の平面図
【図７】本発明の一実施の形態を示す埋込形標識灯装置に使用される曲線路面用灯体を示す斜視図
【図８】同じく平面図
【符号の説明】
Ａ：埋込形標識灯
Ｂ：基台
Ｃ：放電灯点灯制御装置
１：灯体
１ｄ：光導出溝
１ｃ：内部空間
２：プリズム
３：光源ユニット
３ａ：電球
３ｂ：放電灯[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recessed marker light and a marker light device.
[0002]
2. Description of the Related Art In general, in an aeronautical sign used for an airport runway or taxiway, the brightness of the light is controlled (gradation) according to external viewing conditions such as nighttime, dusk, rainy weather, and fog. There is a need. The brightness gradation signal is provided as a step-like constant current line power of phase control corresponding to the load of the light source of the marker lamp (for example, see Patent Document 1).
[0003]
Various types of such aerial beacon lamps are manufactured according to the purpose, but incandescent light bulbs that are easily dimmable are frequently used as light sources for these beacon lamps. The constant current line is generally set according to the load characteristics of the incandescent lamp.
[0004]
In addition, in the case of air traffic sign lights, a light is emitted to allow the aircraft operator to clearly and reliably recognize the guidance to the runway, the guidance at the time of departure or landing, and the guidance to the invasion route, even in severe weather conditions, by the light. Improvements in efficiency are desired.
[0005]
However, since an incandescent light bulb is used as a light source, there is a disadvantage that luminous efficiency is poor. Also, as is well known, an LED-type indicator lamp using a light-emitting diode element (LED) instead of an incandescent light bulb has been proposed, but still does not have high luminous efficiency.
[0006]
[Patent Document 1]
SUMMARY OF THE INVENTION When the brightness of a sign lamp is increased in order to enhance the visibility of the sign lamp, for example, in fine weather, the luminous efficiency of this type of light source is reduced. Because of the low power, there is a problem that the power consumption becomes relatively large.
[0007]
Here, since discharge lamps such as xenon discharge lamps and metal halide lamps generally have higher luminous efficiency than electric bulbs and LEDs, it is conceivable to apply these discharge lamps as light sources for marker lamps. However, it is generally difficult to reduce the lamp current supplied to these discharge lamps due to unstable discharge phenomena, and an expensive ballast with a dimming function is indispensable. There is a defect that lacks in nature.
[0008]
Therefore, the present invention provides a recessed marker light and a marker light device that can easily control dimming and can relatively suppress an increase in power consumption when the brightness of the marker lamp is increased. With the goal.
[0009]
According to a first aspect of the present invention, there is provided a recessed-type marker lamp having a light guide groove disposed on an upper surface and extending obliquely upward and an internal space communicating with the light guide groove. An optical path regulating prism disposed liquid-tight between the light guide groove and the internal space of the lamp body; and a discharge lamp and a bulb or a light emitting diode element configured to emit light toward the prism. And a light source unit housed in the internal space of the lamp body.
[0010]
A recessed-type marker lamp according to the second aspect of the present invention is provided with a plurality of light guide grooves which are disposed on the upper surface and extend obliquely upward and an internal space communicating with the light guide grooves; A plurality of light path regulating prisms disposed in a liquid-tight manner between the light guiding groove and the internal space; and a light bulb or a light emitting diode element configured to emit light toward a specific prism. A first light source unit housed in the interior space of the body; and a second light source unit housed in the interior space of the lamp body, comprising a discharge lamp configured to emit light toward another prism. And;
[0011]
According to a third aspect of the present invention, there is provided a marker lamp device comprising: a recessed marker lamp according to the first or second embodiment; and a discharge lamp that is turned on when a supplied gradation current value exceeds a predetermined value. And a discharge lamp lighting control device.
[0012]
In each of the above-mentioned inventions, it is possible to adapt to a desired use such as a runway center line light, a taxiway light, a stop line light for an airport, and an intersection sign for a road. Further, the sign lamp needs to irradiate light at a small angle with respect to the road surface, and it is difficult to set the optical axis of the lamp at a small angle with respect to the road surface inside the lamp body. Therefore, an optical path radiated from the lamp is refracted in the direction of the road surface with a prism interposed therebetween. The optical path setting means that the optical path is set in a predetermined direction, for example, as described above.
[0013]
The light bulb is preferably a halogen light bulb in terms of small high light output, but a relatively small high light output can be obtained even in a krypton or xenon gas filled light bulb, and even when a small high light output is not required, Allow other bulbs to be used. Some halogen bulbs have an infrared reflective film formed on the surface of the bulb, but are suitable for the present invention because of their high luminous efficiency.
[0014]
As for the discharge lamp, a high-pressure discharge lamp called a normal HID lamp such as a xenon lamp or a metal halide lamp is preferable from the viewpoint of small and high light output. Allow the use of different types of discharge lamps.
[0015]
In each of the embodiments of the present invention, the electric bulb or the discharge lamp may be configured to emit light toward the prism in combination with the reflector.
[0016]
Here, the reflector preferably has a reflective film with a high reflectance applied to the inner surface of the substrate. However, when the substrate itself is made of a material having a high reflectance, for example, high-purity aluminum, a reflective film is deposited separately. You don't have to.
[0017]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a recessed marker light device according to an embodiment of the present invention.
[0018]
FIG. 1 is a perspective view showing a straight road lamp used in a recessed marker light device according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. It is sectional drawing in the state where the lamp was assembled to the base.
[0019]
In the figure, the recessed marker light device has a recessed marker light A and a base B. First, with respect to the embedded marker lamp A, reference numeral 1 denotes a lamp body, 2 denotes a prism for regulating an optical path, 3 denotes a light source unit, and 4 denotes a color filter.
[0020]
The lamp body 1 is for a facing road surface, and is composed of an upper lamp body 1a and a lower lamp body 1b liquid-tightly covering the lower surface of the upper lamp body 1a with an O-ring 5 therebetween. Is formed. On the upper surface of the upper lamp body 1a, a pair of light guide grooves 1d directed obliquely upward are formed in the opposite directions and shifted from each other.
[0021]
The central area of the upper surface of the upper lamp body 1a is a flat portion 1e, and the periphery thereof is an inclined surface 1f. The light guide groove 1d is open across the flat portion 1e and the inclined surface 1f on the upper surface.
[0022]
Reference numeral 1g denotes four mounting holes for mounting the upper lamp body 1a formed in the peripheral portion to the lower lamp body 1b and the base B.
[0023]
The prism 2 is provided at a connection portion between the light guide groove 1d and the internal space 1c.
[0024]
As shown in FIG. 4, the light source unit 3 includes a single base type halogen bulb 3 a and a discharge lamp 3 b of the same type arranged side by side, and a reflector that collects and reflects light emitted from these lamps. 3c, and is stored in the internal space 1c of the upper part 1a of the lamp body so as to face the prisms 2 and 2.
[0025]
The color filter 4 is provided as needed to match the emission light color determined for each installation location of the embedded marker lamp, and is provided in front of the light entrance of the prism 2.
[0026]
Next, the base B will be described. In the figure, reference numeral 11 denotes an inner peripheral step portion, 12 denotes an upright wall, 13 denotes a central recess, and 14 and 17 denote mounting holes. Although not shown, a power cable introduction hole is formed on the side surface of the base B.
[0027]
The inner peripheral step portion 11 supports the peripheral portion of the lamp body 1 for mounting the recessed marker light A slightly above the bottom surface of the lamp body 1. The upright wall 12 surrounds and protects the side surface of the recessed marker light A. The base B is buried on the road surface up to the upper end of the upright wall 12.
[0028]
The central concave portion 13 is used to house the lamp body 1 in a liquid-tight manner at the central portion thereof via the O-ring 5 and to perform necessary electric wiring (not shown) for the marker lamp A. FIG. 5 is a plan view of the lower lamp body.
[0029]
3, the lower lamp body 1b has a dish shape provided with a flange portion 1b1 on the outer periphery as is apparent with reference to FIG. , The upper lamp body 1a and the base B are mutually attached.
[0030]
The lower ring 1b and the base B are liquid-tightly formed by the O-ring 6.
[0031]
FIG. 6 is a plan view of the base similarly. In the figure, reference numerals 14 and 17 are mounting holes for mounting the upper lamp body 1a and the lower lamp body 1b. Then, the lamp body 1 and the base B are detachably fixed through the mounting holes 14 and 17 by fixing means such as bolts.
[0032]
Further, in the recessed marker light device according to the present embodiment, the discharge lamp that controls the lighting of the discharge lamp 3b in accordance with the current value of the gradation current shown in Table 1 supplied from the power line (wiring line), for example. The lighting control device C is accommodated in the internal space 1c of the upper lamp body 1a.
[0033]
[Table 1]

[0034]
The discharge lamp lighting control device C includes a current detection circuit unit (not shown) for detecting a current value of a gradation current supplied to the embedded marker lamp device, and a ballast for energizing the discharge lamp 3b. In the present embodiment, the ballast is operated when the current value is 6.6 A or more, and the operation of the ballast is stopped when the current value is less than 6.6 A. Note that the current value of the gray scale current at which the ballast starts operating is not limited to 6.6 A, and can be appropriately determined.
[0035]
Here, the power supplied from the ballast to the discharge lamp 3b is preset so that the total amount of light emitted from the halogen bulb 3a and the discharge lamp 3b becomes a predetermined maximum rated luminous flux value.
[0036]
That is, when a gradation current of 6.6 A is supplied to the embedded marker light device, the discharge lamp 3b is turned on, and when the gradation current is small, only the halogen bulb 3a is turned on.
[0037]
The halogen bulb 3a is always energized by the gradation current supplied to the recessed marker light device, and is therefore electrically connected so as to perform dimming lighting according to the gradation current.
[0038]
As described above, the ballast does not change its output according to the current value of the gradation current supplied to the recessed marker light device, but operates when the output becomes equal to or higher than a predetermined current value. Therefore, it is possible to prevent the occurrence of unstable discharge which is likely to be induced when the discharge lamp 3b is dimmed.
[0039]
Therefore, according to the present embodiment, when connected to a conventional constant current power supply for a sign lamp, the gradation control of the sign lamp can be easily performed, and when the brightness of the sign lamp is increased, the luminous efficiency is increased. Since the discharge lamp having a relatively high power is turned on, an increase in power consumption can be relatively suppressed.
[0040]
FIG. 7 is a perspective view showing a curved road surface lamp used in the recessed marker light device according to an embodiment of the present invention, and FIG. 8 is a plan view of the same. This curved section lamp is to be installed on a curved section such as a runway or a taxiway, which is a turning angle, and forms a pair of light guides at an angle of about 150 degrees which is narrower than 180 degrees on a plane. A groove 1d is arranged.
[0041]
The four mounting holes 1g formed in the peripheral portion for mounting on the upper lamp body 1a, the lower lamp body 1b, and the base B are formed at the same position as the arrangement of the straight road surface lamp body.
[0042]
The other configuration is the same as that of the straight road lamp. Therefore, since the mounting hole 1g to be attached to the base B is formed at the same position for the straight road surface and the curved road surface, the base B can be used in common, and the manufacturing cost is reduced accordingly. Can be reduced. In addition, when installing on a road surface, there is no need to consider a dedicated base that matches the lamp body, and the workability is improved.
[0043]
In the above-described embodiment, the description has been given of the case where the light emitted from the electric bulb and the discharge lamp is reflected and condensed using one reflector 3c. However, for example, a reflector may be provided for each light source. Further, the use of the reflector may be omitted depending on the application.
[0044]
Further, instead of the bulb 3a, a light emitting diode element can be used. Further, a second light source unit using a discharge lamp separately from the light source unit using the bulb or the light emitting diode is separated inside the lamp body. It can also be accommodated and emit light towards different optical path regulating prisms. In this case, a color correction filter that can be disposed between the light source unit and the optical path regulating prism can be appropriately selected according to the emission color of each light source.
[0045]
According to the present invention, a recessed marker lamp and a marker lamp which can easily control dimming and can relatively suppress an increase in power consumption when the brightness of the marker lamp is increased. An apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a straight road lamp used in a recessed marker light device according to an embodiment of the present invention; FIG. 2 is a plan view of the same; FIG. FIG. 4 is a plan view of a light source unit used in a recessed marker light device. FIG. 5 is a plan view of a lower lamp body. FIG. 6 is a plan view of a base. 7 is a perspective view showing a curved road lamp used in the recessed marker light device according to one embodiment of the present invention.
A: Recessed marker lamp B: Base C: Discharge lamp lighting control device 1: Lamp body 1d: Light guide groove 1c: Internal space 2: Prism 3: Light source unit 3a: Light bulb 3b: Discharge lamp

Claims (3)

A light body provided on the upper surface and having a light guide groove extending obliquely upward and an internal space communicating with the light guide groove;
A light path regulating prism disposed liquid-tight between the light guide groove of the lamp body and the internal space;
A light source unit having a discharge lamp and a light bulb or a light emitting diode element configured to emit light toward the prism, and housed in the interior space of the lamp body;
A recessed-type sign lamp characterized by comprising: A light body provided on the upper surface and having a plurality of light guide grooves directed obliquely upward and an internal space communicating with the light guide grooves;
A plurality of light path regulating prisms disposed in a liquid-tight manner between each light guide groove and the inner space of the lamp body;
A first light source unit having a bulb or light emitting diode element configured to emit light toward a particular prism and housed in the interior space of the lamp body;
A second light source unit having a discharge lamp configured to emit light toward another prism and housed in an interior space of the lamp body;
A recessed-type sign lamp characterized by comprising: A recessed marker light according to claim 1 or 2;
A discharge lamp lighting control device configured to turn on the discharge lamp when the supplied gradation current value exceeds a predetermined value;
A marker light device comprising:

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