JP2012216334A - Lamp fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp fitting that can emit light with uniform and high illuminance toward outside the radius with one center axis as the center.SOLUTION: In a ship light 10, a light-emitting element 42 is arranged so as a light-emitting part to be positioned on a center axis X. A main reflector 22 includes a reflecting surface 22a for reflecting light emitted from the light-emitting element 42. The reflecting surface 22a is formed into a shape made by rotating an elliptic arc with the center axis X as the center having a first focal point P1 placed on the center axis X and a second focal point P2 placed further away from the center axis X than the first focal point P1. The light-emitting element 42 is arranged to have the center of a light-emitting surface placed at the first focal point P1. A sub reflector 44 reflects light emitted from the light-emitting element 42 to a lens part 24a on an opposite side of the center axis X.

Description

  The present invention relates to a lamp, and more particularly to a lamp that emits light radially outwardly about a certain axis.

  Ships are usually equipped with ship lights to ensure safety when navigating at night. While such ship lights are placed in harsh environments such as being exposed to seawater, wind and rain, and direct sunlight, high reliability is required to realize safe navigation. For this reason, for example, ship lights using LEDs (Light Emitting Diodes) that are more reliable than light sources such as incandescent lamps have been proposed (see, for example, Patent Document 1).

JP 2007-027052 A

  This shiplight needs to meet regulations such as the Maritime Collision Prevention Law. This marine collision prevention method stipulates that an illuminance of a predetermined value or more must be realized over a predetermined range in the axial direction, or that an illuminance of a predetermined value or more must be realized over a predetermined angle in the circumferential direction. Yes. However, for example, since the ship lights described in the above-mentioned patent documents are provided with a plurality of LEDs in the circumferential direction, it is not easy to satisfy such regulations of the marine collision prevention law.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lamp capable of emitting light with a uniform and high illuminance radially outward about a certain central axis. There is.

  In order to solve the above-described problems, a lamp according to an aspect of the present invention includes a light emitting element arranged so that a light emitting unit is positioned on a virtual axis, an optical member having a reflective surface that reflects light emitted from the light emitting element, and Is provided. The reflecting surface includes a shape in which an elliptical arc in which the first focal point is located on or near the virtual axis and the second focal point is separated from the virtual axis with respect to the first focal point is rotated around the virtual axis.

  According to this aspect, since the light emitting element is disposed in the vicinity of the focal point of the reflecting surface formed in the shape of an elliptical arc rotating body, it is possible to irradiate uniform light in the circumferential direction. For this reason, the lamp suitable for a shiplight etc. can be provided.

  You may further provide the auxiliary optical member which reflects the light which a light emitting element emits on the other side on both sides of a virtual axis. According to this aspect, the light emitted from the light emitting element can be used efficiently, and the luminous intensity of the light emitted from the lamp can be increased.

Another embodiment of the present invention is also a lamp. The lamp includes a first unit having a first light emitting element disposed so that a light emitting unit is positioned on a virtual axis, and a first optical member having a first reflecting surface that reflects light emitted from the first light emitting element. And a second unit having a second light emitting element disposed so that the light emitting unit is positioned on the virtual axis, and a second optical member having a second reflecting surface that reflects light emitted from the second light emitting element, Is provided. Each of the first reflecting surface and the second reflecting surface rotates an elliptical arc whose center is on or near the virtual axis and whose other focus is further away from the virtual axis than the one about the virtual axis. Including different shapes. The first unit and the second unit are arranged so that the first reflecting surface and the second reflecting surface face in opposite directions. According to this aspect, first, each of the first reflecting surface and the second reflecting surface is Thus, since the elliptical arc is formed in a shape rotated about the virtual axis, it becomes possible to irradiate uniform light in the circumferential direction. In addition, by arranging the first unit and the second unit so that the first reflecting surface and the second reflecting surface are opposite to each other, more uniform light can be emitted in a direction parallel to the virtual axis. Can do.

  ADVANTAGE OF THE INVENTION According to this invention, the lamp | ramp which can radiate | emit light with uniform and high illumination intensity radially outward centering on a certain central axis can be provided.

It is a front view of the ship light which concerns on 1st Embodiment. It is sectional drawing of the ship lamp which concerns on 1st Embodiment. It is sectional drawing of the lens which shows the shape of a lens part. It is sectional drawing of the ship lamp which concerns on 2nd Embodiment. It is sectional drawing of the ship lamp which concerns on 3rd Embodiment. It is sectional drawing of the ship lamp which concerns on 4th Embodiment.

(First embodiment)
Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.

  FIG. 1 is a front view of a boat lamp 10 according to the first embodiment. The ship lamp 10 is a lamp attached to the ship in order to realize safe voyage. The boat light 10 may be used for any of white light, bicolor light, dark light, mast light, and stern light (stan light). Note that a lamp similar to the boat lamp 10 may be used for purposes other than the boat lamp.

  The boat lamp 10 is formed in a cylindrical shape. The boat lamp 10 has an upper unit 12 and a lower unit 14. The lower part of the upper unit 12 is fixed to the upper part of the lower unit 14, and the shiplight 10 is comprised.

  FIG. 2 is a cross-sectional view of the boat lamp 10 according to the first embodiment. The shiplight 10 shows a cross section by a plane including the central axis X. The upper unit 12 includes a first outer cover 20, a main reflector 22, and a lens 24. The first outer cover 20 functions as a top cover of the shiplight 10 and covers the upper part of the shiplight 10. The first outer cover 20 is formed by integrally forming a disk-shaped upper part and a cylindrical part extending vertically downward from an edge of the upper part. The main reflector 22 is fixed to the opening portion below the first outer cover 20.

  The main reflector 22 has a reflecting surface 22a facing downward. The reflection surface 22a is subjected to mirror surface treatment such as aluminum vapor deposition. The reflecting surface 22a is formed in a shape in which an elliptical arc in which the first focal point P1 is located on the central axis X and the second focal point P2 is further away from the central axis X than the first focal point P1 is rotated 360 degrees around the central axis X. Is done. The reflecting surface 22a may have the first focal point P1 positioned in the vicinity of the central axis X. Further, the reflecting surface 22a has an elliptical arc in which the first focal point P1 is located on the central axis X and the second focal point P2 is farther from the central axis X than the first focal point P1 at a predetermined angle less than 360 degrees around the central axis X. It may be formed to include a rotated shape. Further, the reflection surface 22a may include another shape of the elliptical arc rotating body shape in this way.

  The lens 24 is formed in an annular shape having a constant axial length, and is fixed to the edge of the main reflector 22 by adhesion or welding so as to extend downward from the edge of the main reflector 22. The lens 24 is formed of a colorless and transparent resin. The lens 24 may be colored and transparent, or may be a material other than a resin such as glass.

  The lens 24 has a lens portion 24a and a female screw portion 24b. The lens portion 24a is disposed in an opening through which reflected light from the main reflector 22 passes radially outward about the central axis X, and emits light inside the shiplight 10 to the outside. The opening that allows light to pass outward in the center may be provided over a predetermined angle of less than 360 degrees about the central axis X. The lens part 24a may be provided over the same predetermined angle around the central axis X so as to cover the opening. Depending on the type of shiplight, there is one that is required to emit light radially within a predetermined angle range of less than 360 degrees. In this case, by providing the lens 24 with the central axis X over a predetermined angle, the light emission direction can be limited to that angle. The female screw portion 24b is provided in a portion extending downward from the lens portion 24a.

  The lower unit 14 includes a base plate 30, a second outer cover 32, a light source mounting member 34, an LED board unit 36, a cap 38, and a sub reflector 44. The base plate 30 is formed in a disk shape. The base plate 30 is provided with an attachment hole 30c for fixing the shiplight 10 to the hull. A circular opening 30b is provided at the center of the base plate 30, and a cap 38 is fitted into the opening 30b.

  The second outer cover 32 is formed in a cylindrical shape having the same diameter as the first outer cover 20. The light source mounting member 34 is formed by integrally forming a disk-shaped plate portion 34a and a cylindrical portion 34b extending vertically downward from the edge of the plate portion 34a. The outer diameter of the plate portion 34 a is substantially the same as the inner diameter of the second outer cover 32, and the light source mounting member 34 is fitted into the second outer cover 32. The base plate 30 is provided with a circular groove 30a, and the lower ends of both the second outer cover 32 and the light source mounting member 34 are fitted and fixed in the groove 30a. When water enters the interior of the shiplight 10, it causes rust of metal parts inside the shiplight 10. Therefore, ultrasonic welding is used as a fixing method at this time so as to prevent water from entering.

  The LED board unit 36 includes a board 40 that is a printed wiring board and a light emitting element 42. The light emitting element 42 is an LED light emitting element and is mounted on the substrate 40 in advance. Of course, the light emitting element is not limited to the LED. The light emitting element 42 is preferably a chip type rather than a so-called bullet type. The bullet type has a relatively small amount of light emitted in the left-right direction and is configured to be long on the central axis X. On the other hand, since the chip type emits a large amount of light in the left-right direction, it is suitable for emitting in the direction intersecting the central axis X. Of course, a bullet-type LED may be employed.

  In the first embodiment, a white LED is adopted as the light emitting element 42. Of course, the color of the light emitted from the light emitting element 42 is not limited to white. For example, when the shiplight 10 is used as a dual-type light, a green LED or a red LED may be employed as the light emitting element 42. Further, when the boat lamp 10 is used as a white lamp, a mast lamp, or a stern lamp, a white LED may be adopted as the light emitting element 42. Further, when the shiplight 10 is used as a beanlight, a green LED may be employed as the light emitting element 42 of the shiplight 10 disposed on the starboard, and a red LED may be employed as the light emitting element 42 of the shiplight 10 disposed on the portside. .

  The substrate 40 is formed in a disc shape, and the light emitting element 42 is disposed at the center thereof. The light emitting element 42 is disposed so that the center of the light emitting surface is located on the central axis X. The LED board unit 36 is fixed on the plate portion 34a of the light source mounting member 34 by screwing or screwing. At this time, the light emitting element 42 is disposed so that the main optical axis is directed vertically upward. For this reason, the main optical axis of the light emitting element 42 overlaps the central axis X.

  A male screw portion 32 a is provided at the upper end of the second outer cover 32. The female screw portion 24 b of the lens 24 is screwed into the male screw portion 32 a of the second outer cover 32, and the upper unit 12 is fixed to the lower unit 14. By fixing the upper unit 12 to the lower unit 14 by screwing in this way, the replacement of the upper unit 12 can be facilitated.

  When the upper unit 12 is fixed to the lower unit 14 in this way, the light emitting element 42 is disposed so as to face the reflecting surface 22 a of the main reflector 22. At this time, the light emitting element 42 is disposed relative to the main reflector 22 so that the first focal point P1 is located at the center of the light emitting surface. The light emitted from the light emitting surface of the light emitting element 42 is reflected by the reflecting surface 22a, passes through the lens 24, and is emitted radially outward about the central axis X. Therefore, the main reflector 22 functions as an optical member that reflects light from the light emitting element 42.

  The reflection surface 22a is formed such that a straight line connecting the first focal point P1 and the second focal point P2 forms a predetermined angle with respect to a plane perpendicular to the central axis X in a cross section including the central axis X. Specifically, in the cross section including the central axis X, the reflecting surface 22a forms an angle of less than 45 degrees upward with respect to a plane that connects the first focal point P1 and the second focal point P2 with respect to a plane perpendicular to the central axis X. It is formed as follows. It is known that the light emitted from the reflecting surface 22a has the largest amount of light in the direction of 45 degrees from the reflecting surface 22a. By forming the reflection surface 22a in this way, more light can be reflected by the reflection surface 22a and emitted radially outward.

  You may have the light transmissive member with which it was filled between the reflective surface 22a of the main reflector 22, and the plate part 34a upper surface of the light source attachment member 34. FIG. This light transmitting member may be colorless and transparent or colored and transparent.

  The sub reflector 44 is formed in an annular shape with a constant axial length. The sub reflector 44 is disposed on the upper surface of the plate portion 34 a so as to be coaxial with the central axis X. The sub reflector 44 has a larger diameter than the substrate 40 and is disposed so as to surround the LED substrate unit 36. A reflective surface 44 a is provided on the inner surface of the sub reflector 44. The reflecting surface 44a is subjected to a mirror surface treatment such as aluminum vapor deposition. The sub-reflector 44 reflects the light emitted from the light emitting element 42 that does not directly reach the reflecting surface 22a or the lens 24 toward the lens portion 24a on the opposite side across the central axis X. Accordingly, the sub reflector 44 functions as an auxiliary optical member that reflects light from the light emitting element 42. Thereby, the light which the light emitting element 42 emits can be utilized efficiently.

  FIG. 3 is a cross-sectional view of the lens 24 showing the shape of the lens portion 24a. A cylindrical lens is employed for the lens portion 24a. Specifically, as shown in FIG. 3, a cylindrical surface is provided on the outer surface of the lens portion 24a. The cylindrical surface is provided with a step that curves so as to wave in the horizontal direction as it advances in the axial direction.

  The first optical path L1 shows an example of a path of light emitted from the light emitting element 42 and reflected by the reflecting surface 22a, passes through the second focal point P2, and further passes through the lens unit 24a and exits to the outside. . The second optical path L2 shows an example of the path of the light emitted from the light emitting element 42 that directly reaches the lens unit 24a, passes through the lens unit 24a, and exits to the outside. The third optical path L3 shows an example of the path of the light emitted from the light emitting element 42 and the light reflected by the reflecting surface 44a of the sub reflector 44 is transmitted through the lens portion 24a and emitted to the outside.

  As described above, by adopting the cylindrical lens in the lens portion 24a, the light from the first optical path L1, the second optical path L2, and the third optical path L3 can be appropriately diffused in the vertical direction. For this reason, the bias | inclination of the light to a perpendicular direction can be suppressed. Since most of the light transmitted through the lens portion 24a is reflected light from the reflecting surface 22a, the light in the first optical path L1 is particularly provided to diffuse. Moreover, the cylindrical surface of the lens part 24a may be provided on the inner surface of the lens part 24a.

(Second Embodiment)
FIG. 4 is a cross-sectional view of the boat lamp 100 according to the second embodiment. Note that portions similar to those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The shiplight 100 includes an upper unit 12, an intermediate unit 106, and a lower unit 104. The intermediate unit 106 includes a second outer cover 108, a plate 110, a pair of LED board units 36, and a pair of sub reflectors 44. The second outer cover 108 is formed in a cylindrical shape having the same diameter as the first outer cover 20. The plate 110 is formed in a disk shape having an outer diameter substantially the same as the inner diameter of the second outer cover 108. The plate 110 is fitted into the second outer cover 108 and fixed by adhesion or welding.

  One of the pair of LED substrate units 36 is arranged on the upper surface of the plate 110 such that the center of the light emitting surface of the light emitting element 42 is located at the center of the plate 110. The other of the pair of LED substrate units 36 is disposed on the lower surface of the plate 110 such that the center of the light emitting surface of the light emitting element 42 is located at the center of the plate 110. One of the pair of sub reflectors 44 is arranged on the upper surface of the plate 110 so as to be coaxial with the plate 110, and the other is arranged on the lower surface of the plate 110 so as to be coaxial with the plate 110.

  The lower unit 104 includes a base plate 120, a third outer cover 122, a main reflector 22, a lens 24, and a cap 38. The base plate 120 is formed in a disk shape. The base plate 120 is provided with an attachment hole 120c for fixing the shiplight 100 to the hull. A circular opening 120b is provided at the center of the base plate 120, and the cap 38 is fitted into the opening 120b.

  The third outer cover 122 is formed in the same cylindrical shape as the first outer cover 20 and the second outer cover 108. The base plate 120 is provided with a circular groove 120a, and the lower end portion of the third outer cover 122 is fitted into the groove 120a and fixed. The lower surface of the edge of the main reflector 22 is fixed to the upper end of the third outer cover 122 so that the reflecting surface 22a faces upward. Further, the lens 24 is fixed to the upper surface of the edge portion of the main reflector 22 so that the female screw portion 24b is positioned above the lens portion 24a.

  Male screw portions 108 a are provided at the upper and lower ends of the second outer cover 108. The male screw portion 108 a provided at the lower end portion of the second outer cover 108 is screwed and fixed to the female screw portion 24 b of the lens 24 of the lower unit 104. Thereby, the intermediate unit 106 is fixed to the lower unit 104. Next, the female screw portion 24 b of the lens 24 in the upper unit 12 is screwed and fixed to the male screw portion 108 a provided at the upper end portion of the second outer cover 108. Thereby, the upper unit 12 is fixed to the intermediate unit 106. Thus, the shiplight 100 is configured.

  Here, the LED substrate unit 36, the main reflector 22, the lens 24, and the sub reflector 44 above the plate 110 are referred to as a first light source unit 130. The LED substrate unit 36, the main reflector 22, the lens 24, and the sub reflector 44 below the plate 110 are referred to as a second light source unit 132.

  In the first light source unit 130, the main reflector 22 is arranged such that the first focal point P1 of the reflecting surface 22a is located on the central axis X and the reflecting surface 22a faces downward. The light emitting element 42 is disposed so that the light emitting surface faces vertically upward below the reflecting surface 22a so that the light emitting surface faces the reflecting surface 22a. The main reflector 22 is configured such that the first focal point P1 of the reflecting surface 22a is the center of the light emitting surface of the light emitting element 42 so that the light emitted from the light emitting element 42 is reflected by the reflecting surface 22a and radiated radially outward about the central axis X. It arrange | positions so that it may be located in.

  In the second light source unit 132, the main reflector 22 is arranged such that the first focal point P1 of the reflecting surface 22a is located on the central axis X and the reflecting surface 22a faces upward. The light emitting element 42 is disposed above the reflective surface 22a so that the light emitting surface faces vertically downward so that the light emitting surface faces the reflective surface 22a. The main reflector 22 is configured such that the first focal point P1 of the reflecting surface 22a is the center of the light emitting surface of the light emitting element 42 so that the light emitted from the light emitting element 42 is reflected by the reflecting surface 22a and radiated radially outward about the central axis X. It arrange | positions so that it may be located in.

  Thus, the light quantity by the shiplight 100 can be increased by arranging the 1st light source unit 130 and the 2nd light source unit 132 in parallel with an axial direction. At this time, the first light source unit 130 and the second light source unit 132 are arranged such that the respective reflecting surfaces 22a face in opposite directions. Specifically, the first light source unit 130 and the second light source unit 132 are configured to be plane symmetric with respect to the center plane of the plate 110. Thus, by arranging the first light source unit 130 and the second light source unit 132 in opposite directions, the uniformity in the vertical direction of the light emitted from the shiplight 100 can be enhanced.

(Third embodiment)
FIG. 5 is a cross-sectional view of a boat lamp 200 according to the third embodiment. Hereinafter, the same portions as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The shiplight 200 has an upper unit 204, an intermediate unit 206, and a lower unit 14. The upper unit 204 includes a first outer cover 210, the LED board unit 36, and the sub reflector 44. The first outer cover 210 functions as a top cover of the shiplight 200 and covers the upper part of the shiplight 200. The first outer cover 210 is formed by integrally forming a disk-shaped upper part and a cylindrical part having the same diameter as the second outer cover 32 and extending vertically downward from the edge of the upper part.

  The LED board unit 36 is disposed on the lower surface of the disk-shaped portion of the first outer cover 210 so that the center of the light-emitting surface of the light-emitting element 42 is located at the center of the disk-shaped portion. The sub reflector 44 is disposed so as to be coaxial with the lower surface of the disk-shaped portion.

  The intermediate unit 206 includes a third outer cover 212, a pair of main reflectors 22, and a pair of lenses 24. The third outer cover 212 is formed in a cylindrical shape having the same diameter as the second outer cover 32.

  The lower surface of the edge of the main reflector 22 is fixed to the upper end of the third outer cover 212 so that the reflection surface 22a faces upward. A lens 24 is attached to the upper surface of the edge of the main reflector 22. At this time, the lens 24 is disposed such that the female screw portion 24b is positioned above the lens portion 24a. The upper surface of the edge of the main reflector 22 is fixed to the lower end of the third outer cover 212 so that the reflecting surface 22a faces downward. A lens 24 is attached to the lower surface of the edge of the main reflector 22. At this time, the lens 24 is disposed such that the female screw portion 24b is positioned below the lens portion 24a.

  The female screw part 24b of the lens 24 below the intermediate unit 206 is screwed into the male screw part 32a of the second outer cover 32 of the lower unit 14, and the intermediate unit 206 is fixed to the lower unit 14. A male screw portion 210 a is provided at the lower end of the cylindrical portion of the first outer cover 210. The male screw portion 210 a of the first outer cover 210 is screwed into the female screw portion 24 b of the lens 24 above the intermediate unit 206, and the upper unit 204 is fixed to the intermediate unit 206. Thus, the boatlight 200 is configured.

  Here, the LED substrate unit 36, the main reflector 22, the lens 24, and the sub-reflector 44 above the center of the third outer cover 212 in the height direction are referred to as a first light source unit 220. The LED board unit 36, the main reflector 22, the lens 24, and the sub reflector 44 below the center of the third outer cover 212 in the height direction are referred to as a second light source unit 222.

  In the first light source unit 220, the main reflector 22 is arranged such that the first focal point P1 of the reflection surface 22a is located on the central axis X and the reflection surface 22a faces upward. The light emitting element 42 is disposed above the reflective surface 22a so that the light emitting surface faces vertically downward so that the light emitting surface faces the reflective surface 22a. The main reflector 22 is configured such that the first focal point P1 of the reflecting surface 22a is the center of the light emitting surface of the light emitting element 42 so that the light emitted from the light emitting element 42 is reflected by the reflecting surface 22a and radiated radially outward about the central axis X. It arrange | positions so that it may be located in.

  In the second light source unit 222, the main reflector 22 is arranged such that the first focal point P1 of the reflecting surface 22a is located on the central axis X and the reflecting surface 22a faces downward. The light emitting element 42 is disposed so that the light emitting surface faces vertically upward below the reflecting surface 22a so that the light emitting surface faces the reflecting surface 22a. The main reflector 22 is configured such that the first focal point P1 of the reflecting surface 22a is the center of the light emitting surface of the light emitting element 42 so that the light emitted from the light emitting element 42 is reflected by the reflecting surface 22a and radiated radially outward about the central axis X. It arrange | positions so that it may be located in.

  Thus, the light quantity by the shiplight 100 can be increased by arranging the 1st light source unit 220 and the 2nd light source unit 222 in parallel with an axial direction. At this time, also in the third embodiment, the first light source unit 220 and the second light source unit 222 are arranged so that the respective reflecting surfaces 22a face in opposite directions. Specifically, the first light source unit 220 and the second light source unit 222 are configured to be plane-symmetric with respect to the center surface in the height direction of the third outer cover 212. As described above, even when the first light source unit 220 and the second light source unit 222 are arranged in opposite directions in a manner different from the second embodiment, the uniformity in the vertical direction of the light emitted from the shiplight 100 is improved. be able to.

(Fourth embodiment)
FIG. 6 is a cross-sectional view of a boat lamp 300 according to the fourth embodiment. Hereinafter, the same portions as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The shiplight 300 has a main unit 302 and an outer lens 304. The main unit 302 includes a base plate 306, a plate 308, a reflector 310, an LED board unit 36, and a rivet 312.

  The base plate 306 is formed in a disc shape. The base plate 306 has a plurality of protruding portions 306a protruding upward. The plate 308 is also formed in a disk shape. The LED board unit 36 is disposed on the upper surface of the plate 308. At this time, the LED board unit 36 is disposed such that the center of the light emitting surface of the light emitting element 42 is located on the central axis X. The sub reflector 44 is coaxially disposed on the upper surface of the plate 308 so as to surround the LED substrate unit 36.

  The reflector 310 has a reflective surface 310a. The reflective surface 310a is subjected to a mirror surface treatment such as aluminum vapor deposition. The reflecting surface 310a is formed in a shape in which an elliptical arc in which the first focal point P1 is located on the central axis X and the second focal point P2 is further away from the central axis X than the first focal point P1 is rotated 360 degrees around the central axis X. Is done. The reflective surface 310a may have the first focal point P1 positioned in the vicinity of the central axis X.

  The reflector 310 has an opening 310b that opens at a predetermined angle of less than 360 degrees around the central axis X. The opening 310b is provided to have a uniform width in the axial direction. The axial position and length of the opening 310b with respect to the reflecting surface 310a are the same as the axial position and length of the lens 24 in the first embodiment.

  The reflector 310 has a flange portion 310c that extends radially outward from the lower end portion. A mounting hole is provided in the flange portion 310c. The rivet 312 is inserted into the mounting hole and fastened to the protruding portion 306 a of the base plate 306 through the mounting hole of the plate 308. As a result, the reflector 310 and the plate 308 are fixed to the base plate 306. At this time, the positional relationship among the light emitting element 42, the reflecting surface 310a, and the sub reflector 44 is the same as that of the light emitting element 42, the reflecting surface 22a, and the sub reflector 44 according to the first embodiment.

  The outer lens 304 is formed of a colorless and transparent resin. The outer lens 304 may be formed of a colored transparent material, or may be formed of a material other than resin such as glass. The outer lens 304 has a certain thickness and is formed so as to have a hemispherical outer diameter.

  A female screw part 304 a is provided on the inner surface of the lower end part of the outer lens 304. A male screw portion 306 b is provided at the edge of the base plate 306. A female screw portion 304 a is screwed into the male screw portion 306 b, and the outer lens 304 is fixed to the intermediate unit 206.

  By providing the outer lens 304 in this manner, the boat lamp 300 can be configured so that there is no seam except at the connection point between the outer lens 304 and the base plate 306. For this reason, the risk of water intrusion into the shiplight 300 can be reduced.

  The present invention is not limited to the above-described embodiment, and an appropriate combination of the elements of this embodiment is also effective as an embodiment of the present invention. Various modifications such as various design changes can be added to the present embodiment based on the knowledge of those skilled in the art, and the embodiments with such modifications can be included in the scope of the present invention.

  DESCRIPTION OF SYMBOLS 10 Shiplight, 12 Upper unit, 14 Lower unit, 20 1st outer cover, 22 Main reflector, 22a Reflecting surface, 24 Lens, 24a Lens part, 30 Base plate, 32 2nd outer cover, 34 Light source attachment member, 36 LED board Unit, 40 substrate, 42 light emitting element, 44 sub-reflector, 44a reflecting surface, 100 shiplight, 102 upper unit, 104 lower unit, 106 intermediate unit, 108 second outer cover, 110 plate, 120 base plate, 122 third outer cover 130 First light source unit, 132 Second light source unit, 200 Ship light, 204 Upper unit, 206 Intermediate unit, 210 First outer cover, 212 Third outer Bar, 220 first light source unit, 222 second light source unit, 300 ship lamp, 302 main unit, 304 outer lens, 306 a base plate, 308 plates, 310 a reflector, 310a reflecting surface, 310b opening.

Claims (3)

A light emitting element arranged such that the light emitting unit is located on the virtual axis;
An optical member having a reflecting surface for reflecting light emitted from the light emitting element;
With
The reflecting surface has a shape in which an elliptical arc whose first focal point is located on or near the virtual axis and whose second focal point is farther from the virtual axis than the first focal point is rotated around the virtual axis. A lamp characterized by including.   The lamp according to claim 1, further comprising an auxiliary optical member that reflects light emitted from the light emitting element to an opposite side across the virtual axis. A first unit having a first light emitting element disposed so that the light emitting unit is positioned on a virtual axis, and a first optical member having a first reflecting surface that reflects light emitted from the first light emitting element;
A second unit having a second light emitting element disposed so that a light emitting unit is positioned on the virtual axis, and a second optical member having a second reflecting surface that reflects light emitted by the second light emitting element;
With
Each of the first reflecting surface and the second reflecting surface has an elliptical arc in which one focal point is located on or near the virtual axis and the other focal point is farther from the virtual axis than the one focal point. Including a shape rotated around
The lamp is characterized in that the first unit and the second unit are arranged such that the first reflecting surface and the second reflecting surface face in opposite directions.

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