JP2011175768A - Marine beacon light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a marine beacon light which can avoid increase in the number of die required for production of a dome type hood in a die injection molding method as well as complication of molding processes, and achieves safe navigating of ships by improving visibility of the beacon light. <P>SOLUTION: The marine beacon light 100 includes: the dome type hood 120 formed at least by a hood outer circumference wall 122 and a hood internal circumference wall 123 with their diameters gradually shrinking from a hood starting end side towards a hood top end side of the dome type hood 120; a cylindrical convex lens 121 with its outer circumference side curved surface 121a constituting a part of the hood outer circumference wall 122, and its inner circumference side curved surface 121b constituting a part of the hood inner circumference wall 123; and a hood outer circumference surface 122a of the hood outer circumference wall 122 extending from the outer circumference side lens curved surface 121a towards the hood starting end side, and the hood inner circumference surface 123a of the hood inner circumference wall 123 extending from the inner circumference side lens curved surface 121b towards the hood top end side, both of which are of a flat surface, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a marine route marking light used mainly for lighthouses, lightposts, light buoys, bridge lights, and the like in order to ensure the safety of marine traffic.

  2. Description of the Related Art Conventionally, the applicant of the present invention has an optical unit, which is a light source composed of a light emitting diode and a reflecting mirror or lens, or an optical system composed of a combination of a light emitting diode, a reflecting mirror and a lens, and a transparent housing for the optical unit. Marine lane marking lights equipped with a dome-shaped hood have been supplied to the market (see Non-Patent Document 1).

Home page showing current sign lights of Nippon Koki Kogyo Co., Ltd. <http://www.nipponkoki.co.jp/html/page03-1.html>

  However, it is a dome-shaped hood 420 used in the marine route marking light 400 shown in FIGS. 8 and 9, and is emitted from a light-emitting source 410 including a plurality of light-emitting diodes 411 arranged around the dome-shaped hood 420. When the dome-shaped hood 420 having the cylindrical convex lens 421 for narrowing the vertical light distribution angle of the fluorescent light L1 is manufactured by a mold injection molding method, the dome-shaped hood 420 including the cylindrical convex lens 421 as shown in FIG. When the molds M3 and M4 are removed in the vertical direction, the outer lens curved surface 421a of the cylindrical convex lens 421 is caught by the mold M3, so that the dome-shaped hood 420 is divided into the circumferential direction. Therefore, it becomes necessary to remove the plurality of molds M3 in the horizontal direction in the figure using the plurality of molds M3 thus formed. The number of molds M3 is increased, and after forming the dome-shaped hood 420 with a plurality of molds M3 divided from each other, it takes time to separate and remove these molds M3 from each other. There was a problem of complicating the process.

  Further, when the dome-shaped hood 420 is molded using a plurality of molds M3 that are divided in the circumferential direction of the dome-shaped hood 420, a boundary that separates the plurality of molds M3 from each other, in other words, a plurality of molds. Since a vertical line is formed in the dome-shaped hood 420 along the dividing line A that separates M3 from each other, the cylindrical convex lens 421 of the part where the vertical line is formed and the part where the vertical line is not formed are used. There is a problem in that the intensity and light distribution of the narrowed fluorescent light L2 vary, and it is difficult to ensure safe navigation of the ship by improving the visibility of the fluorescent light L2.

  In addition, the boundary between the outer peripheral lens curved surface 421a and the hood outer peripheral wall 422 extending in the vertical direction thereof is contaminated by adhering substances such as dust, so that the optical characteristics of the cylindrical convex lens 421 are deteriorated and the visibility of the fluorescent light L2 is reduced. There is a problem that it is difficult to ensure safe navigation of the ship by improving the ship.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to increase the number of molds required for the mold injection molding method used when manufacturing the dome-shaped hood and to complicate the molding process. It is intended to provide a marine route marking light that can improve the visibility of fluorescent light and realize safe navigation of a ship.

  First, according to the first aspect of the present invention, a light emitting source that emits fluorescent light and a cylindrical convex lens that surrounds the light emitting source and diffuses and distributes the fluorescent light of the light emitting source to a distant sea are integrally formed by at least mold injection molding. A marine navigational sign light having a dome-shaped hood, and a dome-shaped hood whose dome-shaped hood is reduced in diameter from the hood start side to the hood top end side, The cylindrical convex lens has an outer peripheral lens curved surface constituting a part of the hood outer peripheral wall and an inner peripheral lens curved surface constituting a part of the hood inner peripheral wall, and the outer peripheral lens curved surface of the hood outer peripheral wall. The hood outer peripheral surface extending from the hood starting side to the hood inner peripheral wall and the hood inner peripheral surface extending from the inner peripheral lens curved surface to the hood top end side are flat surfaces, respectively. It is obtained by solving the problems described above.

  The invention according to claim 2 is the marine navigation mark lamp according to claim 1, wherein the light emitting source is a plurality of light emitting diodes arranged annularly at a position coincident with the focal point of the cylindrical convex lens. This problem is further solved.

  The invention according to claim 3 is the marine navigation mark light according to claim 1 or 2, wherein the cylindrical convex lens is provided at a plurality of locations facing the top end side of the hood of the dome-shaped hood. The above-mentioned problems are further solved by constituting a plurality of light emitting diode groups that are arranged around the dome-shaped hood in the height direction corresponding to each of the plurality of cylindrical convex lenses. It is a thing.

  The invention according to claim 4 is the marine navigation mark light according to any one of claims 1 to 3, wherein the inner peripheral lens curved surface is closer to the hood start than the outer peripheral lens curved surface. By being formed, the above-described problems are further solved.

  The marine route marking lamp according to claim 1 of the present invention includes a light emitting source that emits fluorescent light and a cylindrical convex lens that surrounds the light emitting source and diffuses and distributes the fluorescent light of the light emitting source to the distant sea. The dome-shaped hood that is integrated with the dome-shaped hood improves not only the vertical light distribution angle of the fluorescent light but also improves the visibility of the fluorescent light by ships navigating the sea, and realizes safe navigation. The following unique effects can be obtained.

  That is, the marine route marking light according to claim 1 is formed at least by a hood outer peripheral wall and a hood inner peripheral wall in which the dome-shaped hood is successively reduced in diameter from the hood starting end side to the hood top end side of the dome-shaped hood. The cylindrical convex lens has an outer peripheral lens curved surface constituting a part of the hood outer peripheral wall and an inner peripheral lens curved surface constituting a part of the hood inner peripheral wall, and the hood starts from the outer peripheral lens curved surface of the hood outer peripheral wall. The hood outer peripheral surface extending toward the end side and the inner peripheral surface of the hood extending from the inner peripheral lens curved surface toward the top end side of the hood are flat surfaces, so that the dome type hood is molded by a mold injection molding method. The outer peripheral lens curved surface, the inner peripheral lens curved surface, the hood outer peripheral surface, and the hood inner peripheral surface are each removed to remove the mold from the dome-shaped hood. Therefore, while avoiding an increase in the number of molds required for mold injection molding and complication of the molding process, the vertical dome-shaped hood is formed along the dividing line separating the molds from each other. The line is eliminated to improve the visibility of the fluorescent light and the unevenness of the dome-shaped hood is reduced, so that the boundary between the outer peripheral lens curved surface and the hood outer peripheral surface and the inner peripheral side lens curved surface and the hood inner peripheral surface respectively. Contamination due to deposits such as dust can be reduced, and the deterioration of the optical characteristics of the cylindrical convex lens can be avoided, and the visibility of the fluorescent light can be improved to realize safer navigation of the ship.

  In addition to the effect achieved by the marine route marker light according to claim 1, the marine route marker light according to claim 2 includes a plurality of light emitting sources arranged annularly at positions that coincide with the focal point of the cylindrical convex lens. Because the vertical light distribution angle of most of the fluorescent light is narrowed down by the cylindrical convex lens, it is high from the marine navigation sign light along the entire circumferential direction of the dome-shaped hood without wasting the fluorescent light. It is possible to achieve safe navigation of the ship over a wide area at sea by dissipating and distributing the fluorescent light of the light intensity to reach the sea area far from the marine navigation mark light.

  And, in addition to the effect that the marine route marking light according to claim 1 or claim 2 has, the cylindrical convex lens is directed to the top end side of the dome-shaped hood. A plurality of light emitting diodes are arranged around a plurality of locations, and a plurality of light emitting diodes are arranged around each other in the height direction of the dome-shaped hood corresponding to each of the plurality of cylindrical convex lenses. As a result, the amount of fluorescent light diffused and distributed from the marine navigation mark light is increased as compared with the case where one light emitting diode group is provided as a light emitting source. This can be further improved and safe navigation of the ship can be realized.

  In addition, the maritime navigation mark light according to claim 4 has an inner peripheral lens curved surface as an outer peripheral lens in addition to the effect produced by the marine navigation mark light according to any one of claims 1 to 3. Compared to the case where the inner lens side curved surface and the outer lens side curved surface are formed at the same height along the height direction of the dome-shaped hood by being formed closer to the hood start than the curved surface. Since the vertical light distribution angle of the fluorescent light is corrected so that the light is diffused downward, the visibility of the fluorescent light is improved by the ship navigating the sea, that is, the ship navigating the lower side of the marine route light. Therefore, safer navigation of the ship can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a marine channel marking light according to a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a marine channel marking light according to a first embodiment of the present invention. The metal mold drawing process figure in the manufacturing process of the dome shape food | hood in 1st Example of this invention. The perspective view of the marine route marking light which concerns on 2nd Example of this invention. The front view of the marine route marking light which concerns on 2nd Example of this invention. The fragmentary sectional view of the marine route mark light which concerns on 3rd Example of this invention. The use aspect figure of the marine route mark light which concerns on 3rd Example of this invention. The perspective view of the marine route mark light which concerns on a comparative example. The front view of the marine route mark light which concerns on a comparative example. The metal mold drawing process figure in the manufacturing process of the dome shape hood which concerns on a comparative example.

In the marine route marker lamp of the present invention, a light emitting source that emits fluorescent light and a cylindrical convex lens that surrounds the light emitting source and diffuses and distributes the fluorescent light of the light emitting source to the far sea are integrally formed by at least mold injection molding. A dome-shaped hood, and the dome-shaped hood is formed of at least a hood outer peripheral wall and a hood inner peripheral wall that are successively reduced in diameter from the hood starting end side to the hood top end side of the dome-shaped hood. Has an outer peripheral lens curved surface constituting a part of the hood outer peripheral wall and an inner peripheral lens curved surface constituting a part of the hood inner peripheral wall, and from the outer peripheral lens curved surface of the hood outer peripheral wall toward the hood starting side. A dome-shaped hood is manufactured by the hood inner peripheral surface extending from the inner peripheral lens curved surface toward the hood top end side of the hood outer peripheral surface and the hood inner peripheral wall being flat surfaces. In addition to avoiding the increase in the number of molds required for the mold injection molding method used in the process and the complication of the molding process, it is possible to improve the visibility of the fluorescent light and realize safer navigation of the ship. For example, any specific embodiment may be used.
In addition, the marine route marking light of the present invention may be any one that is used for at least a lighthouse, a lightpost, a light buoy, a bridge light, etc., mainly for ensuring the safety of maritime traffic, and is limited to these applications. It is not a thing.

A marine route marking light 100 according to a first embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 1 is a perspective view of the marine navigation mark light 100 according to the present embodiment, FIG. 2 is a front view of the marine navigation mark lamp 100 according to the present embodiment, and FIG. It is the metal mold drawing process figure in the manufacturing process of the dome shape food | hood 120 in an Example.

First, as shown in FIGS. 1 and 2, a marine navigational route light 100 according to this embodiment includes a light source 110 that emits fluorescent light L1 and a fluorescent light L2 that surrounds the light source 110 and disperses the fluorescent light L2 over the far sea. The cylindrical convex lens 121 for light distribution is configured to include at least a dome-shaped hood 120 integrally formed by mold injection molding, and the visibility of the fluorescent light L2 by a ship navigating the sea by narrowing the vertical light distribution angle of the fluorescent light L1. To improve navigation and realize safe navigation.
Further, a circuit unit (not shown) such as a drive circuit for driving the light emission source 110 is housed in the internal space of the housing 130 or the dome-shaped hood 120.

Next, based on FIG. 1 thru | or FIG. 3, the structure peculiar to the marine route marking light 100 which concerns on a present Example is demonstrated in detail.
As shown in FIGS. 1 to 3, in the marine route marking light 100, a hood outer wall 122 and a hood whose dome-shaped hood 120 is gradually reduced in diameter from the hood starting end side to the hood top end side of the dome-shaped hood 120. The cylindrical convex lens 121 has an outer peripheral lens curved surface 121a constituting a part of the hood outer peripheral wall 122 and an inner peripheral lens curved surface 121b constituting a part of the hood inner peripheral wall 123. Of the hood outer peripheral wall 122, the hood outer peripheral surface 122a extending from the outer peripheral lens curved surface 121a toward the hood starting end side, and among the hood inner peripheral wall 123, the hood inner peripheral surface 123a extending from the inner peripheral side lens curved surface 121b toward the hood top end side. When the dome-shaped hood 120 is manufactured by a mold injection molding method, each of the outer peripheral lenses has a flat surface. Each of the surface 121a, the inner peripheral lens curved surface 121b, the hood outer peripheral surface 122a, and the hood inner peripheral surface 123a functions as a draft for removing the mold M1 from the dome-shaped hood 120. Even if the molds M1 and M2 are removed, the increase in the number of molds M1 required for mold injection molding and the complexity of the molding process are avoided, and at the same time, the dividing line dividing the mold M1 into a plurality of molds is obtained. The vertical line formed in the dome-shaped hood 120 along the line is eliminated to improve the visibility of the fluorescent light L2, and the unevenness of the dome-shaped hood 120 is reduced, so that the boundary between the outer peripheral lens curved surface 121a and the dome outer peripheral surface 122a Dirt due to dust and other adhering matters is reduced at each of the boundary between the inner peripheral lens curved surface 121b and the dome inner peripheral surface 123a. To avoid deterioration of the optical properties of the lens 121, to improve the visibility of the light is adapted to achieve a safer navigation of vessels.

  In the marine navigation mark lamp 100 according to the present embodiment, the light source 110 is a plurality of light emitting diodes 111 arranged in a ring at a position that coincides with the focal point F of the cylindrical convex lens 121, so that most of the fluorescent light L1 is obtained. Since the vertical light distribution angle is narrowed down by the cylindrical convex lens 121, the fluorescent light L2 having high light intensity is emitted from the marine navigational sign light 100 along the entire circumferential direction of the dome-shaped hood 120 without wasting the fluorescent light L1. Thus, the fluorescent light L2 is made to reach the sea far away from the marine route marking light 100, and safe navigation of the ship is realized in a wide area on the sea.

Next, a marine route marking light 200 according to a second embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 4 is a perspective view of a marine navigation mark light 200 according to the second embodiment of the present invention, and FIG. 5 is a front view of the marine navigation mark light 200 according to the second embodiment of the present invention. It is.
In addition, in the marine route marker light 200 according to the present embodiment, the cylindrical convex lens 221 and the light source 210 included in the dome-shaped hood 220 are more specific than the marine route marker light 100 of the first embodiment described above. Since the configuration is different and the remaining configuration is exactly the same as that of the marine route marking light 100 of the first embodiment, the detailed description thereof is omitted by replacing the numbers in the 100 series with the 200 series. To do.

  As shown in FIGS. 4 and 5, the marine navigation mark light 200 includes a cylindrical convex lens 221 provided around a plurality of locations facing the top of the hood of the dome-shaped hood 220, and a plurality of light emitting diodes 211 including a plurality of cylinders. A plurality of light emitting diode groups 210a that are circumferentially spaced apart from each other in the height direction of the dome-shaped hood 220 corresponding to each of the convex lenses 221 are formed, so that a plurality of light emitting sources 210 are provided. Compared with the case where one light emitting diode group 210a is provided, the amount of the fluorescent light L2 emitted from the marine navigation mark light 200 is increased, so that the visibility of the fluorescent light L2 is further improved and the ship is safer. Navigation has been realized.

Next, a marine route marking light 300 according to a third embodiment of the present invention will be described with reference to FIGS.
Here, FIG. 6 is a partial cross-sectional view of a marine route marking lamp 300 according to the third embodiment of the present invention, and FIG. 7 shows the use of the marine channel marking lamp 300 according to the third embodiment of the present invention. FIG.
It should be noted that the marine route marker lamp 300 according to the present embodiment differs from the marine route marker lamp 100 of the first embodiment described above in the specific form of the cylindrical convex lens 321 included in the dome-shaped hood 320. Since the remaining configuration is exactly the same as that of the marine navigation mark light 100 of the first embodiment, the detailed description thereof will be omitted by replacing the numbers in the 100s with the 300s.

As shown in FIGS. 6 and 7, in the marine navigational sign light 300 according to the present embodiment, the inner peripheral lens curved surface 321b is closer to the hood start side, which is the lower side in the drawing than the outer peripheral lens curved surface 321a. As a result, the outer peripheral lens curved surface 321a and the inner peripheral lens curved surface 321b are more downwardly fluorescent L2 as compared with the case where they are formed at the same height along the height direction of the dome-shaped hood 320. Since the vertical light distribution angle of the fluorescent light L1 is corrected so that the light is emitted, the visibility of the fluorescent light L2 by the ship S navigating the sea, that is, the ship S navigating the lower side of the marine navigation mark light 300 is improved. Thus, safer navigation of the ship S is realized.
In addition, when the shape of the cylindrical convex lens 221 of the marine navigation mark light 200 according to the second embodiment described above is changed to the shape of the cylindrical convex lens 321 according to the present embodiment, the marine navigation according to the second embodiment described above. The channel marking light 200 has the same effect as the marine channel marking light 300 according to the present embodiment.

  As described above, in the marine navigational route lights 100, 200, and 300 according to the first to third embodiments, the dome-shaped hoods 120, 220, and 320 have the hood hoods of the dome-shaped hoods 120, 220, and 320. The hood outer peripheral walls 122, 222, 322 and the hood inner peripheral walls 123, 223, 323, which are sequentially reduced in diameter from the end side toward the hood top end side, are formed at least, and the cylindrical convex lenses 121, 221 and 321 are formed as the hood outer peripheral wall 122, 222, 322 has outer peripheral side lens curved surfaces 121a, 221a, 321a and hood inner peripheral walls 123, 223, 323, and hood outer peripheral walls 121b, 221b, 321b. Of 122, 222, and 322, from the outer peripheral lens curved surface 121a, 221a, 321a toward the hood start side. Of the hood outer peripheral surfaces 122a, 222a, 322a and the hood inner peripheral walls 123, 223, 323, the hood inner peripheral surfaces 123a, 223a, 323a extending from the inner peripheral lens curved surfaces 121b, 221b, 321b toward the hood top end side are respectively flat. When the dome-shaped hoods 120, 220, and 320 are manufactured by a mold injection molding method, the outer peripheral lens curved surfaces 121a, 221a, and 321a, the inner peripheral lens curved surfaces 121b, 221b, and 321b, and the hood outer peripheral surface 122a , 222a and 322a and hood inner peripheral surfaces 123a, 223a and 323a function as drafts for removing the mold from the dome-shaped hoods 120, 220 and 320, respectively. Increase in number and complexity of molding process While eliminating the vertical lines formed in the dome-shaped hoods 120, 220, and 320 along the dividing line that divides the plurality of molds from each other, the visibility of the fluorescent light L2 is improved and due to dirt The effect is enormous, for example, the deterioration of the optical characteristics of the cylindrical convex lenses 121, 221 and 321 that may occur can be avoided, the visibility of the fluorescent light L2 can be improved, and safer navigation of the ship S can be realized.

100, 200, 300, 400 ... Marine route marking lights 110, 210, 310, 410 ... Light source 210a ... Light emitting diode groups 111, 211, 311, 411 ... Light emitting diodes 120, 220, 320, 420 ... Dome-shaped hood 121, 221, 321, 421 ... Cylindrical convex lens 121a, 221a, 321a, 421a ... Outer peripheral lens curved surface 121b, 221b, 321b ... Inner peripheral lens curved surface 122 , 222, 322, 422 ... Hood outer peripheral wall 122a, 222a, 322a ... Hood outer peripheral surface 123, 223, 323 ... Hood inner peripheral wall 123a, 223a, 323a ... Hood inner peripheral surface 130, 230, 430 ... Housing A ... Dividing line F ... Focus L1, L ... 燈光 M1, M2, M3, M4 ··· mold

Claims (4)

For marine use comprising a light emitting source that emits fluorescent light, and a dome-shaped hood in which a cylindrical convex lens that surrounds the light emitting source and diffuses and distributes the fluorescent light of the light emitting source to the distant sea is at least integrally formed by mold injection molding A traffic light
The dome-shaped hood is formed of at least a hood outer peripheral wall and a hood inner peripheral wall that are successively reduced in diameter from the hood start side to the hood top end side of the dome type hood,
The cylindrical convex lens has an outer peripheral lens curved surface constituting a part of the hood outer peripheral wall and an inner peripheral lens curved surface constituting a part of the hood inner peripheral wall;
Of the hood outer peripheral wall, a hood outer peripheral surface extending from the outer peripheral lens curved surface toward the hood starting side, and of the hood inner peripheral wall, a hood inner peripheral surface extending from the inner peripheral lens curved surface toward the hood top end side. These are marine route marking lights characterized by flat surfaces.   2. The marine route marking lamp according to claim 1, wherein the light emitting source is a plurality of light emitting diodes arranged in a ring shape at a position coinciding with a focal point of the cylindrical convex lens. The cylindrical convex lens is provided at a plurality of locations facing the top end side of the dome-shaped hood,
The plurality of light-emitting diodes constitute a plurality of light-emitting diode groups that are circumferentially spaced apart from each other in the height direction of the dome-shaped hood corresponding to each of the plurality of cylindrical convex lenses. The marine route marking light according to claim 1 or 2.   The marine route sign according to any one of claims 1 to 3, wherein the inner peripheral lens curved surface is formed closer to the hood starting end than the outer peripheral lens curved surface. light.

Images