JP2015002111A - Ship's lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ship's lamp capable of clearly defining an interface of a shading range with a shading wall within a narrow range without arranging a second shading wall.SOLUTION: This invention relates to a ship's lamp constructed such that a plurality of LEDs 49 on the same circumference with a center axis line O being a center and an angular range (360-θ1) except an opening of an opening angle θ1 with the center axis line O being a center is shaded by a shading wall S. The nearest LED 49 is arranged on a straight line L passing through the center axis line O and the edge of the shading wall S in such a way that its center may coincide with the straight line L and further it is set in such a way that light beam produced from another LED 49 may not be dispersed outside the opening from the straight line L.

Description

  The present invention relates to a shiplight used as a navigation light or the like.

In recent years, light-emitting diodes (hereinafter referred to as LEDs) are often used as shiplights instead of filament-type light bulbs.
For example, in a shiplight using conventional LEDs, a plurality of LEDs are arranged in the circumferential direction on the outer peripheral surface of a metal column for a column, and a convex lens is mounted on the outer peripheral surface of a trunk tube centering on the metal tube for a column. In some cases, a light-shielding wall (light-shielding plate) that shields a desired angle range of the circumference of the barrel cylinder is provided as necessary (see, for example, Patent Documents 1 and 2).

  In addition, the light from the light emitting element disposed on the central axis is reflected by the reflecting surface of the reflector disposed above, and the opening angle around the central axis is θ, and the outer cover opens to the outside. In other cases, a portion other than the opening in the outer cover is covered with a shade (see, for example, Patent Document 3).

JP 2007-027052 A JP 2007-027054 A JP 2011-175776 A

  In the ship lights described in Patent Documents 1 and 2, as schematically shown in FIG. 13, a plurality of LEDs 02 are mounted side by side in the circumferential direction on the outer peripheral surface of the column metal cylinder 01. The light ray passing through the inner side of the side edge 03a of the arc-shaped light shielding wall 03 includes not only the light ray 04a emitted from the LED 02a closest to the side edge 03a but also the light ray emitted from the LED 02x located away from the side edge 03a. 04x is also included, and an attenuation region 05 in which the amount of light gradually decreases with increasing distance from the edge of the opening is formed in a region sandwiched between the light beam 04a and the light beam 04x outside the light shielding wall 03. Indeed, the boundary of the light shielding range becomes unclear, which is not preferable as a shiplight.

  In the shiplight described in Patent Document 3, the light source can be regarded as a point light source, but the reflecting surface of the reflector has a curved surface shape in which an elliptical arc having two focal points is rotated around a central axis. Therefore, the light emitted from the point light source and reflected by another part of the reflecting surface diffuses outward through the inner edge of the shade, so that the same as the attenuation region 05 described above is formed, The boundary of the light shielding range is unclear.

  On the other hand, in order to maintain safe navigation of ships, the Marine Collision Prevention Law and the Maritime Traffic Safety Law, etc., the color of the shiplight to be provided, the range of illumination, and the illuminance according to the type and size of the ship. In particular, the mast lamp is 112.5 ° to the left and right from the hull center line, and the starlight and port lights are 112 to the right or left from the hull center line, respectively. .5 ° is strictly defined, and the allowable limit at the boundary is also strictly defined.

For this reason, in this type of conventional shiplight, in order to satisfy the above limitation on the light emission range, a second light shielding wall is disposed at a certain distance from the outside of the original light shielding wall. The current situation is to compensate for the unclearness of the boundary of the light shielding range by the light shielding wall.
However, such a means is possible in a large-sized ship, but in a small-sized ship, there is no space for arranging the second light shielding wall and is often difficult to implement.

  In view of the above-described problems of the conventional technology, the present invention can sharpen the boundary of the light shielding range by the light shielding wall within a narrow range without providing the second light shielding wall. The purpose is to provide a shiplight.

According to the present invention, the above problem is solved as follows.
(1) A plurality of LEDs are arranged on the same circumference centered on the central axis O, and an opening having an opening angle θ1 centered on the central axis O is left outside thereof, and the other angular range In a boat lamp in which (360-θ1) is shielded by a light shielding wall, the nearest LED is on the straight line L passing through the central axis O and the edge of the light shielding wall, and the center thereof coincides with the straight line L. The light beam emitted from other LEDs is set so as not to diffuse outside the opening from the straight line L.

According to such a configuration, since the light emitted from any LED does not diffuse outside the opening from the straight line L, an attenuation region does not occur, and the edge of the light shielding wall that is the side edge of the opening Since a light beam emitted from the center of the nearest LED passes inside, the boundary of the light shielding range by the light shielding wall can be made clear.
Therefore, the boundary of the light shielding range by the light shielding wall can be made clear within a narrow range without providing a second light shielding wall or the like as in the prior art, and the entire shiplight can be downsized.

(2) In the above item (1), the LED closest to the projection angle θ2 on the straight line L passing through the central axis O and the edge of the light shielding wall is a bisector of the projection angle θ2. The projection center line C is arranged so as to substantially coincide with the straight line L.

  According to such a configuration, since a light ray close to the light projection center line C of the latest LED passes inside the edge of the light shielding wall that is the side edge of the opening, the boundary of the light shielding range by the light shielding wall becomes clearer. The effect of the invention of item (1) can be further enhanced.

(3) In the above item (1) or (2), the number of LEDs is three, one of them is arranged on a straight line L, and the other is either one of the left and right of the one Further, they are arranged apart from each other by the opening angle θ1, and the remaining one is arranged so that the light projection angle θ2 is included in the opening angle θ1 of the opening.

  According to such a configuration, a small-sized and efficient shiplight can be provided with a simple structure that can make the boundary of the light-shielding range by the light-shielding wall clear with a small number of LEDs, without causing an attenuation region. be able to.

(4) In any one of the above items (1) to (3), the opening angle θ1 is any one of 112.5 °, 225 °, and 135 °.

  According to such a configuration, it is possible to provide a boatlight that complies with laws and regulations such as the Maritime Collision Prevention Law and the Maritime Traffic Safety Law.

(5) In any one of the above items (1) to (4), the LED projection angle θ2 is set to 112.5 to 180 °.

  According to such a configuration, it is possible to provide a shiplight in which the illuminance distribution of light projected from the opening is substantially uniform.

(6) In any one of the above items (1) to (5), the center axis O between the two LEDs arranged on the straight line L connecting the center axis O and both edges of the light shielding wall is the center. One or a plurality of intermediate LEDs are arranged on the same circumference, and a shielding plate for preventing the light rays of the intermediate LEDs from diffusing outside the opening from the straight line L is provided between adjacent LEDs. .

  According to such a configuration, even if the number of LEDs is increased and the illuminance is increased, an attenuation region does not occur and the boundary of the light shielding range by the light shielding wall can be made clear.

(7) In any one of the above items (1) to (5), the center axis O between the two LEDs arranged on the straight line L connecting the center axis O and both edges of the light shielding wall is the center. One or a plurality of intermediate LEDs are arranged on the same circumference so that the boundary line θ3a of the light projection angle θ3 is positioned inside the opening from the straight line L.

  According to such a configuration, even if the number of LEDs is increased and the illuminance is increased, an attenuation region does not occur and the boundary of the light shielding range by the light shielding wall can be made clear. Moreover, the shielding plate as in the invention of item (5) can be omitted, and the structure can be simplified.

  According to the present invention, it is possible to provide a shiplight that can sharpen the boundary of a light shielding range by a light shielding wall within a narrow range without providing a second light shielding wall or the like.

It is an external appearance perspective view of 1st Embodiment of the ship lamp of this invention. Similarly, it is a side view. Similarly, it is a plan view. Similarly, it is an exploded perspective view. It is a disassembled perspective view of an LED unit part. It is a top view when a cover part is removed. It is a vertical side view which follows the VII-VII line in FIG. It is a general | schematic cross-sectional top view which shows typically the relationship between the light-shielding wall and LED when using as a mast lamp. It is a general | schematic cross-sectional top view which shows typically the relationship between the light-shielding wall and LED when using it as a port light. It is a schematic cross-sectional top view which shows typically the relationship between the light-shielding wall and LED when using it as a stern light. It is a general | schematic cross-sectional top view which shows typically the relationship between the light-shielding wall and LED when using it as a port light in 2nd Embodiment of the ship lamp of this invention. It is a general | schematic cross-sectional top view which shows typically the relationship between the light-shielding wall and LED when using it as a port light in 3rd Embodiment of the ship lamp of this invention. It is a general | schematic cross-sectional top view which shows typically the relationship between the light-shielding wall and LED when using it as a port light in the conventional shiplight.

Embodiments of a boat lamp according to the present invention will be described below with reference to the drawings.
1 to 10 show a first embodiment of a boat lamp of the present invention.
As shown in FIGS. 1 to 5, this boat lamp includes a base portion 1, an outer cylinder portion 2, an LED unit portion 3, and a lid portion 4.

As shown in FIG. 4, the base portion 1 is a colored opaque opaque plate in which a fitting hole 7 is provided at the center of a circular bottom plate 6 and a short cylindrical standing edge 8 is provided on the outer peripheral edge of the bottom plate 6. A base 5 made of a synthetic resin material is provided.
On the upper surface of the bottom plate 6 in the base 5, six standing walls 9 and a low-sized connecting wall 10 that connects them are erected so as to form a hexagon surrounding the fitting hole 7. ing.
A boss portion 12 for attaching a retaining screw 11 from the rear is provided inside the standing edge 8 at the rear portion of the base 5.
Three mounting holes 14 for inserting the mounting screws 13 for mounting the boat lamps to the hull are provided in the portion outside the six standing walls 9 on the upper surface of the bottom plate 6, and similarly, the six standing walls 9. A mark 15 indicating a hexagonal corner formed by the six standing walls 9 is attached to the inner portion.

The outer cylinder portion 2 includes an outer cylinder body 16 made of a colorless and transparent synthetic resin material.
As shown in FIG. 7, the outer cylinder 16 includes a circular bottom plate 18 provided with a stepped fitting hole 17 in the center, a cylindrical tube portion 19 erected on the outer peripheral edge of the bottom plate 18, and In addition, a hexagonal portion 21 connected to the lower surface of the bottom plate 18 via a small-diameter neck portion 20 and a small-diameter cylindrical portion 22 connected to the lower surface of the hexagonal portion 21 are provided. As shown in FIG. 7, the fitting hole 17 is formed by connecting a plurality of enlarged diameter step holes 17 b to the upper end of a tapered hole-shaped small diameter hole 17 a.
A part of the upper outer peripheral surface of the cylindrical portion 19 in the outer cylindrical body 16 is provided with a triangular protrusion-shaped bow direction mark 19a indicating the bow direction.

  On the bottom plate 18, three support columns 24 provided with a screw hole 23 at the center of the upper end are erected on the circumference concentric with the bottom plate 18 at an appropriate interval. Alternatively, a plurality of positioning pins 25 are erected.

  An annular groove 26 is provided on the outer peripheral surface of the small-diameter cylindrical portion 22 in the outer cylindrical body 16, and an O-ring 27 is fitted therein.

  The O-ring 27 is in pressure contact with the inner surface of the fitting hole 7 in the base 5, so that the small-diameter cylindrical portion 22 of the outer cylindrical body 16 is fitted into the fitting hole 7 and the hexagonal portion 21 is made up of six upstanding walls 9. And the end of the retaining screw 11 inserted into the boss 12 from the rear of the base 5 is fitted to the outer wall 16 of the outer cylinder 16. The outer cylinder body 16 is firmly attached to the base 5 by fitting the small diameter neck portion 20 to prevent the outer cylinder body 16 from coming off from the base 5.

  As shown in FIG. 5, the LED unit 3 includes a circular unit bottom plate 28 made of a colored and opaque synthetic resin material, a circular unit top plate 29, and three LED substrates disposed therebetween. 30, three replaceable arc-shaped filters 31, 32, and 33 surrounding them, and a socket substrate 34 having a substantially triangular shape in plan view disposed on the lower surface of the unit bottom plate 28.

  A frustoconical boss 35 is provided at the center of the upper surface of the unit bottom plate 28. A hexagonal hole 37 into which a nut 36 is fitted, and three positioning projections 38 surrounding it are provided on the upper end surface of the unit bottom plate 28. Is provided.

  Grooves 39, 40, and 41 having a circular arc shape in plan view are provided on the upper surface of the peripheral edge of the unit bottom plate 28 so that the protrusions 31a, 32a, and 33a provided on the lower end surfaces of the filters 31, 32, and 33 are fitted. On the upper surface of the unit bottom plate 28 on the inside thereof, three circular through holes 42 through which the three columns 24 in the outer cylinder portion 2 pass, and positioning holes in which the same three positioning pins 25 are fitted. 43, three rectangular through holes 45 through which three connectors 44 provided on the upper surface of the corner portion of the socket substrate 34, and a triangular bow direction mark 46 indicating the bow direction are provided.

  In addition, on the upper surface of the unit bottom plate 28, three pairs of substrate holding columns 47 provided with holding grooves 47a provided on opposite surfaces so that both side edges of the lower half of each of the three LED substrates 30 can be inserted from above. , 47 are erected so that the three LED substrates 30 held thereby form a triangular arrangement with the central axis O passing through the center of the boss 35 as the center.

Each LED board 30 has a substantially square plate shape whose upper half is slightly widened, and a plurality of heat radiation holes 48 are arranged in the vertical direction on both sides.
An LED 49 is provided in the approximate center of the outer surface of each LED board 30, and a connector 50 that supplies power to the LED 49 and can be connected to the corresponding connector 44 of the socket board 34 is provided in the center of the lower end. .

A stepped hole 51 is provided in the center of the upper surface of the unit upper plate 29, and three portions for fixing screws 52 are provided at portions corresponding to the screw holes 23 provided at the upper ends of the three columns 24 on the outer side. The screw insertion hole 53 is provided. Further, three positioning holes 51 a into which the three positioning protrusions 38 can be fitted are provided on the outer peripheral portion of the stepped hole 51 on the lower surface of the unit upper plate 29.
Three circles are formed on the unit upper plate 29 so that the upper part of each LED board 30 is fitted to the outside of the central triangular plate 51 provided with a stepped hole 51 and a screw insertion hole 53. An arcuate window hole 54 is provided.
Furthermore, arc-shaped grooves 55, 56, 57 in which protrusions 31 b, 32 b, 33 b provided on the upper end surfaces of the filters 31, 32, 33 are fitted on the lower surface of the peripheral edge of the unit upper plate 29. (See FIGS. 6 and 7).

The socket substrate 34 is provided with two positioning holes 58 and 58 (see FIG. 5) in which two positioning pins (not shown) projecting downward from the lower surface of the unit bottom plate 28 are fitted. .
A connection wiring 59 connected to the connector 44 hangs down on the lower surface of the socket substrate 34, and the connection wiring 59 is inserted through a rubber bush 60 disposed on the lower surface of the socket substrate 34.
The enlarged diameter flange 60a at the upper end of the rubber bush 60 is provided with positioning holes 61 and 61 similar to the positioning holes 58 and 58 of the socket substrate 34, and penetrates through the positioning holes 58 and 58 of the socket substrate 34, respectively. Two positioning pins (not shown) projecting downward are fitted.

  As shown in FIG. 4, the lid 4 includes a disc-like lid plate 63 provided with a stepped bolt insertion hole 62 at the center of the upper surface, an annular packing 64 disposed on the lower surface thereof, a bolt A bolt 65 that passes through the insertion hole 62 and an O-ring 66 are included.

Next, the procedure for assembling the shiplight will be described.
First, the unit bottom plate 28 is mounted on the socket substrate 34 such that the two positioning pins (not shown) provided on the lower surface of the unit bottom plate 28 are respectively fitted in the corresponding positioning holes 58 in the socket substrate 34. Stacking, the three connectors 44 on the socket substrate 34 are fitted into the corresponding through holes 45 so that the upper portion of each connector 44 protrudes upward from the upper surface of the unit bottom plate 28 and from the lower surface of the socket substrate 34. The hanging connection wiring 59 is inserted into the rubber bush 60, and the positioning hole 61 of the rubber bush 60 is fitted to the positioning pin protruding downward from the positioning hole 58 of the socket substrate 34 so that the unit bottom plate 28 and the socket are connected. The substrate 34 and the rubber bush 60 are overlaid.

  Next, the socket substrate 34, the unit bottom plate 28, and the rubber bush 60 that are overlapped with each other are fitted into the small-diameter hole 17a of the fitting hole 17 of the outer cylindrical body 16, and the corner portion of the socket substrate 34 is formed. Received by the largest diameter enlarged stepped hole 17b of the fitting hole 17, the three support posts 24 pass through the corresponding through holes 42, and the three positioning pins 25 are fitted into the corresponding positioning holes 43. In this manner, it is pushed into the outer cylinder 16.

  Next, the three LED boards 30 on which the LEDs 49 are mounted are inserted into the holding grooves 47a of the corresponding pair of board holding pillars 47a from above, and the connector 50 protrudes above the upper surface of the unit bottom plate 28. 44.

  Next, or prior to mounting the LED substrate 30 on the substrate holding column 47, the three filters 31, 32, 33 are provided with the protrusions 31a32a, 33a at the lower ends thereof, corresponding grooves 39 on the upper surface of the unit bottom plate 28, After fitting on the unit bottom plate 28 so as to be fitted to 40, 41, the nut 36 is fitted into the hexagonal hole 37 at the upper end of the boss 35, and the unit upper plate 29 is inserted into the groove 55 on the lower surface thereof from above. , 56, 57 are fitted with the protrusions 31b, 32b, 33b at the upper ends of the filters 31, 32, 33, and the corresponding positioning protrusions 38 at the upper ends of the bosses 35 are fitted into the three positioning holes 51a. The upper end portion of the substrate 30 is fitted in the corresponding window hole 54 and the screw insertion hole 53 is covered with the screw hole 23 of the column 24, and three fixing screws 52 are screwed from above. Through hole 53, is screwed into the screw hole 23 of each post 24, by tightening the unit upper plate 29 to the outer cylinder 16, connecting the outer cylindrical portion 2 and the LED unit 3.

  In a state where the outer cylinder portion 2 and the LED unit portion 3 are coupled, an O-ring 27 is fitted into the annular groove 26 in the outer peripheral portion of the small diameter cylindrical portion 22 of the outer cylindrical body 16, and the small diameter cylindrical portion 22 is in the base 5. The lower portion of the outer cylindrical portion 2 is fitted into the base portion 1 so that the hexagonal portion 21 is fitted into the six upright walls 9 and the connecting walls 10 in the base 5. Then, the tip of the retaining screw 11 screwed into the boss portion 12 of the base 5 is inserted into the small-diameter neck portion 20 of the outer cylindrical body 16, and the lower portion of the outer cylindrical portion 2 is removed from the base portion 1. The outer cylinder part 2 and the LED unit part 3 are fixed to the base part 1 by stopping.

  Finally, an O-ring 66 is placed on the stepped portion of the stepped hole 51 of the unit upper plate 29, and a packing 64 is placed on the upper surface of the peripheral edge of the unit upper plate 29. 65 is inserted into the bolt insertion hole 62 of the lid plate 63, the O-ring 66, and the stepped hole 51 of the unit upper plate 29, and is screwed into the nut 36 and tightened to complete the boat lamp.

  In this embodiment, the filters 32 and 33 cover the angle range of 112.5 ° from the bow direction to the left and right with the center axis O as the center, and the filter 31 has the other angle range, that is, It is set so as to cover an angle range of 360 ° -112.5 ° × 2 = 135 ° toward the stern direction, and the three LEDs 49 are on the straight line facing the bow direction from the central axis O and on the straight line. On the other hand, the center coincides with a straight line that forms an angle of 112.5 ° to the left and right from the central axis O, that is, on a straight line that passes through the center axis O and the butted portion of the filter 31 and the filters 32 and 33. It is arranged.

  When this shiplight is used as a mast lamp, as shown in FIG. 8, a filter 31 having an opaque property such as black is used as a light shielding wall S, and the filters 32 and 33 are It is assumed that the LED 49 is colorless and transparent, or is completely removed from the LED unit 3 and mounted on the three LED boards 30 is white.

By doing so, three LEDs 49 are arranged on the same circumference centered on the central axis O, and an opening 67 with an opening angle θ1 = 225 ° centered on the central axis O is left outside. The other angle range (360−θ1 = 135 °) is shielded by the light shielding wall S, and the nearest LED 49 is on the straight line L passing through the central axis O and both edges of the light shielding wall S. A ship lamp is formed which is arranged so as to coincide with the LED 49 and is set so that the light rays emitted from the other LEDs 49 do not diffuse outside the opening 67 from the straight line L.
In this case, the projection angle θ2 of each LED 49 is preferably 112.5 ° to 180 °.

Each LED 49 is arranged such that a light projection center line C, which is a bisector of the light projection angle θ2, coincides with the straight line L, and each LED board 30 is arranged with a light projection center line C of the mounted LED 49. In this embodiment, for convenience of manufacturing, the three LED substrates 30 are arranged in an equilateral triangle centered on the central axis O, and each LED 49 is Since the light projection center line C is attached to the LED substrate 30 so as to be orthogonal to the LED substrates 30, the light projection center line C of the LED 49 and the straight lines L do not completely coincide with each other.
However, the projection center line C of the LED 49 and each straight line L need not be completely coincident with each other as in this embodiment, but it is sufficient that they coincide approximately.

  The projection angle θ2 of the LED 49 facing the bow direction is set to be smaller than the opening angle θ1 so that the light emitted from the LED 49 does not diffuse outside the opening 67 from the straight line L.

According to the boat light shown in FIG. 8, since the light emitted from any LED 49 does not diffuse outside the opening 67 from the straight line L, the attenuation region 05 as shown in FIG. Since light rays close to the light projection center line C of the nearest LED 49 pass inside the edge of the light shielding wall S that is the side edge of the opening 67, the boundary of the light shielding range by the light shielding wall S can be made clear.
Therefore, the boundary of the light shielding range by the light shielding wall can be made clear within a narrow range without providing a second light shielding wall or the like as in the prior art, and the entire shiplight can be downsized.

  When the shiplight is used as a port light, as shown in FIG. 9, opaque filters such as black are used as the filters 31 and 33, which are used as the light shielding wall S, and the filter 32 is colorless. The LED 49 that is transparent or red transparent or completely removed from the LED unit 3 and facing the starboard side is removed from the LED unit 3 together with the LED board 30, and the remaining two LEDs 49 are red or white ( Only when the filter 32 is red and transparent).

In this way, two LEDs 49 are arranged on the same circumference centered on the central axis O, and an opening 67 having an opening angle θ1 = 112.5 ° centered on the central axis O is formed outside thereof. The other angle range (360−θ1 = 247.5 °) is shielded by the light shielding wall S, and the projection angle is θ2 on the straight line L passing through the central axis O and both edges of the light shielding wall S. The LED 49 is disposed so that the light projection center line C, which is a bisector of the light projection angle θ2, coincides with or approximately coincides with the straight line L, and light rays emitted from the other LEDs 49 are emitted. A shiplight set so as not to diffuse outside the opening 67 from the straight line L is formed.
In this case, the projection angle θ2 of each LED 49 is preferably 112.5 ° to 180 °.

In the boat light shown in FIG. 9 as well, the light emitted from any of the two LEDs 49 does not diffuse outside the opening 67 from the straight line L, as shown in FIG. Such an attenuation region 05 does not occur, and a light ray close to the light projection center line C of the latest LED 49 passes inside the edge of the light shielding wall S that is the side edge of the opening 67. The boundary of the light shielding range can be made clear.
Therefore, the boundary of the light shielding range by the light shielding wall can be made clear within a narrow range without providing a second light shielding wall or the like as in the prior art, and the entire shiplight can be downsized.

When the shiplight is used as a starlight, the structure shown in FIG. 9 is symmetrical with respect to the bow direction, and the color of the filter and LED 49 is changed to green.
That is, as the filters 31 and 32, a non-translucent material such as black is used as the light-shielding wall S, and the filter 33 is colorless and transparent or green and transparent, or completely from the LED unit 3. The LED 49 facing the port side is removed from the LED unit 3 together with the LED substrate 30, and the remaining two LEDs 49 are green or white (only when the filter 32 is green transparent).

    By doing so, the same operation and effect as the port lamp shown in FIG. 9 can be obtained.

  When the boat light is used as a stern light, as shown in FIG. 10, filters 32 and 33 are made of a non-translucent material such as black and used as a light shielding wall S, and the filter 31 is colorless. The LED 49 that is transparent or completely removed from the LED unit 3 and facing the bow direction is removed from the LED unit 3 together with the LED substrate 30, and the remaining two LEDs 49 are white.

    By doing so, the same operation and effect as in the case of the mast lamp shown in FIG. 8 can be obtained.

FIG. 11 is a schematic cross-sectional plan view schematically showing the relationship between the light-shielding wall and the LED when used as a port light in the second embodiment of the ship lamp of the present invention.
In this example, a plurality of LEDs 69 are attached to the outer peripheral surface of a cylindrical column 68 corresponding to the boss 35 in FIG.

That is, one (or more) on the same circumference centering on the central axis O between the two LEDs 69 disposed on the straight line L connecting the central axis O and both edges of the light shielding wall S. The shielding plate 70 is disposed between the adjacent LEDs 69 and 69 so as to prevent the light rays of the intermediate LED 69 from diffusing outside the straight line L to the outside of the opening. Is provided.
Other configurations can be the same as those of the first embodiment.

  According to such a configuration, even if the number of LEDs 69 is increased and the illuminance is increased, an attenuation region does not occur, and the boundary of the light shielding range by the light shielding wall S can be made clear.

FIG. 12 is a schematic cross-sectional plan view schematically showing the relationship between the light-shielding wall and the LED when used as a port light in the third embodiment of the boat lamp of the present invention.
In this example, instead of providing the shielding plate 70 in the second embodiment shown in FIG. 11 on the outer peripheral surface of the support column 68, two pieces arranged on a straight line L connecting the central axis O and both edges of the light shielding wall S are provided. One (or a plurality) of intermediate lines in which the boundary line θ3a of the projection angle θ3 is positioned inside the opening 67 from the straight line L on the same circumference centering on the central axis O between the LEDs 69 and 69. The LED 69 is attached to the outer peripheral surface of the column 68.
Other configurations are the same as those of the second embodiment described above.

  According to such a configuration, even if the number of LEDs 69 is increased and the illuminance is increased, an attenuation region does not occur, and the boundary of the light shielding range by the light shielding wall S can be made clear. In addition, the shielding plate 70 as in the second embodiment can be omitted, and the structure can be simplified.

The present invention is not limited only to the above-described embodiments, and can be implemented in various modified modes as follows, for example, without departing from the scope of the claims.
(a) Change the assembly procedure for ship lights. For example, after temporarily assembling the LED unit 3, the LED unit 3 is accommodated in the outer cylinder 2, or the unit upper plate 29 is fixed to the column 24 with the fixing screw 52, and then two or three The LED board 30 is attached to the LED unit 3 through the window hole 54.
(b) With the cover plate 63 removed, the two or three LED substrates 30 are exchanged through the window holes 54.
(c) Instead of the plurality of LED substrates 30, a cylindrical substrate is disposed at the center of the LED unit portion 3, and a plurality of LEDs are provided on the outer peripheral surface thereof at appropriate intervals in the circumferential direction.

DESCRIPTION OF SYMBOLS 1 Base part 2 Outer cylinder part 3 LED unit part 4 Cover part 5 Base 6 Bottom plate 7 Fitting hole 8 Standing edge 9 Standing wall 10 Connecting wall 11 Retaining screw 12 Boss part 13 Mounting screw 14 Mounting hole 15 Mark 16 Outer cylinder body 17 Fitting hole 17a Small diameter hole 17b Large diameter step hole 18 Bottom plate 19 Tube portion 19a Bow direction mark 20 Small diameter neck portion 21 Hexagon portion 22 Small diameter tube portion 23 Screw hole 24 Post 25 Positioning pin 26 Annular groove 27 O ring 28 Unit bottom plate 29 Unit upper plate 30 LED substrate 31, 32, 33 Filter 31a, 31b, 32a, 32b, 33a, 33b Projection 34 Socket substrate 35 Boss 36 Nut 37 Hexagonal hole 38 Positioning projection 39, 40, 41 Groove 42 Through hole 43 Positioning hole 44 Connector 45 Through-hole 46 Bow direction mark 47 Substrate holding column 47a holding groove 48 Heat radiation hole 49 LED
50 Connector 51 Stepped hole 51a Positioning hole 52 Fixing screw 53 Screw insertion hole 54 Window hole 55, 56, 57 Groove 58 Positioning hole 59 Connection wiring 60 Rubber bush 60a Diameter expansion flange 61 Positioning hole 62 Bolt insertion hole 63 Cover plate 64 Packing 65 Bolt 66 O-ring 67 Opening 68 Prop 69 LED
70 Shield plate C Projection center line L Straight line O Center axis S Shield wall θ1 Aperture angle θ2 Projection angle θ3 Projection angle θ3a Boundary line

Claims (7)

A plurality of LEDs are arranged on the same circumference centered on the central axis O, and an opening having an opening angle θ1 centered on the central axis O is left outside the angular range (360− In a boat lamp where θ1) is shielded by a light shielding wall,
On the straight line L passing through the central axis O and the edge of the light shielding wall, the nearest LED is arranged so that the center thereof coincides with the straight line L, and light emitted from other LEDs is A shiplight set so as not to diffuse outside the opening from the straight line L.   On the straight line L passing through the central axis O and the edge of the light-shielding wall, the nearest LED having a light projection angle of θ2 and the light projection centerline C which is a bisector of the light projection angle θ2 are The shiplight according to claim 1, wherein the shiplights are arranged so as to substantially coincide with each other.   The number of LEDs is three, one of them is arranged on a straight line L, and the other one is arranged on either the left or right side of the one by an opening angle θ1, 3. The ship lamp according to claim 1 or 2, wherein the remaining one is disposed such that the projection angle θ2 is included in the opening angle θ1 of the opening.   The boat lamp according to any one of claims 1 to 3, wherein the opening angle θ1 is any one of 112.5 °, 225 °, and 135 °.   The shiplight according to any one of claims 1 to 4, wherein a light projection angle θ2 of the LED is 112.5 to 180 °.   One or a plurality of intermediate LEDs are arranged on the same circumference centered on the central axis O between two LEDs arranged on a straight line L connecting the central axis O and both edges of the light shielding wall. The shiplight according to any one of claims 1 to 5, wherein a shielding plate is provided between the adjacent LEDs to prevent the light of the intermediate LED from diffusing outside the opening from the straight line L.   A boundary line θ3a of the projection angle θ3 is a straight line L on the same circumference centering on the central axis O between two LEDs arranged on a straight line L connecting the central axis O and both edges of the light shielding wall. The shiplight according to any one of claims 1 to 5, wherein one or a plurality of intermediate LEDs arranged more inside the opening are disposed.

Images