JP2019212587A - Light - Google Patents

Abstract

To provide a light equipped with first and second light emitting units configured to reflect light emitted from a light emitting element toward front side of the light by a reflector, which has a compact configuration and has an excellent heat releasing property.SOLUTION: It has a configuration that a reflector 24CR of a light emitting unit 20CR is arranged at front side of a light with respect to a connection part 12f connecting a top plate 12e with a top plate 12g arranged at an upper stage in front side of the light. Thereby, the vertical width of the entire light is reduced, and the light 10 is configured to be compact. In addition, as light emitting units 20BR and 20CR, in a state of being supported by a lamp body 12, heat releasing fins 26a of heat sinks 26 are exposed to outside of a light chamber 16 from openings 12e1 and 12g1 of the top plates 12e and 12g. Thereby, the heat generated in the light emitting elements 22 of each of the light emitting units 20BR and 20CR is efficiently released from the heat sink 26 to outside of the light chamber 16.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lamp mounted on an aircraft, an automobile, or the like.

  In general, an aircraft, an automobile, or the like is equipped with a lamp for securing a forward visibility at night.

  “Patent Document 1” includes a plurality of light projecting units configured to reflect light emitted from a light emitting element toward the front of a lamp by a reflector as a lamp for irradiating a forward runway in an aircraft. Things are listed.

  On the other hand, “Patent Document 2” describes a lamp for an automobile in which a plurality of light projecting units each having a light emitting element as a light source are accommodated in a lamp chamber formed by a lamp body and a light-transmitting cover. .

European Patent Application No. 3284681 JP 2004-31224 A

  In the lamp described in the above “Patent Document 1”, since the plurality of light projecting units are arranged in the vertical direction on the same vertical plane, the overall vertical width of the lamp becomes large, and the lamp is compact. It is difficult to configure.

  On the other hand, in the lamp described in “Patent Document 2”, since a plurality of light projecting units are accommodated in the lamp chamber, it is possible to efficiently dissipate heat generated in the light emitting elements of each light projecting unit to the outside of the lamp chamber. Have difficulty.

  The present invention has been made in view of such circumstances, and includes first and second light projecting units configured to reflect light emitted from a light emitting element toward the front of a lamp by a reflector. It is an object of the present invention to provide a lamp having a compact structure and excellent heat dissipation.

  The present invention is intended to achieve the above object by devising the configuration of the lamp body and the like.

That is, the lamp according to the present invention is
In a lamp including first and second light projecting units configured to reflect light emitted from a light emitting element toward the front of the lamp by a reflector,
Each of the light projecting units is supported by the lamp body in a state in which a part of the light projecting unit is accommodated in a lamp chamber formed by a lamp body and a translucent cover attached to the lamp body.
The lamp body includes a first top plate portion extending forward of the lamp, a first connection portion extending upward from a front end position of the first top plate portion, and a front of the lamp from an upper end position of the first connection portion. And a second top plate portion extending toward
An opening is formed in each of the first and second top plates,
Each of the light projecting units includes a heat sink having a heat radiating fin formed on the upper surface, and the light emitting element and the reflector are fixed to the lower surface of the heat sink.
The first light projecting unit is attached to the first top plate in a state in which the heat radiating fins of the heat sink of the light projecting unit are exposed outside the lamp chamber from the opening of the first top plate,
The second light projecting unit is attached to the second top plate in a state where the heat radiating fins of the heat sink of the light projecting unit are exposed outside the lamp chamber from the opening of the second top plate. It is characterized by this.

  The application of the “lamp” according to the present invention is not particularly limited, and can be used for applications such as aircraft landing lights, automobile headlamps, road and ball field lighting, and the like. Further, the specific shape of the light distribution pattern formed by the irradiation light from the “lamp” is not particularly limited.

  The “first top plate portion” and the “second top plate portion” may be formed to extend along a horizontal plane, or may be formed to extend in a direction inclined with respect to the horizontal plane. .

  The “first connection portion” may be formed so as to extend along the vertical plane, or may be formed so as to extend in a direction inclined with respect to the vertical plane.

  The specific shape of the “heat sink” is not particularly limited as long as the heat sink is formed on the upper surface and the light emitting element and the reflector can be fixed on the lower surface.

  The lamp according to the present invention has a configuration in which a part of the first and second light projecting units is accommodated in a lamp chamber formed by a lamp body and a translucent cover. Each of the light projecting units has a configuration in which the light emitting element and the reflector are fixed to the lower surface of the heat sink having the heat radiating fin formed on the upper surface. The first and second light projecting units are arranged on the first and second top plate portions in a state where the heat radiating fins of the heat sinks are exposed to the outside of the lamp chamber from the openings of the first and second top plate portions. Since each is attached, the following effects can be obtained.

  That is, in the lamp according to the invention of the present application, the second connection on the front side of the lamp is second with respect to the first connection portion that connects the first top plate and the second top plate that is stepped up on the front side of the lamp. Therefore, compared to the case where a plurality of light projecting units are arranged in the vertical direction on the same vertical plane as in the prior art, the entire lamp unit is disposed. The vertical width can be reduced, whereby the lamp can be made compact.

  Further, in the state where the first and second light projecting units are supported by the lamp body, the heat radiating fins of the heat sinks are exposed to the outside of the lamp chamber from the openings of the first and second top plate portions. Heat generated in the light emitting element of the light projecting unit can be efficiently dissipated from the heat sink to the outside of the lamp chamber.

  As described above, according to the present invention, in the lamp including the first and second light projecting units configured to reflect the emitted light from the light emitting element toward the front of the lamp by the reflector, the lamp has a compact configuration. In addition, the heat dissipation can be improved.

  In the above configuration, if the light irradiation direction from the second light projecting unit is set to be lower than the light irradiation direction from the first light projecting unit, the irradiation light from each light projecting unit is By combining them, the light irradiation range can be expanded in the vertical direction, which makes it possible to easily form a desired light distribution pattern. In addition, by adopting such a configuration, even if another lamp component member is arranged on the front side of the lamp of the second light projecting unit in the lamp chamber, the second lamp component member causes the second lamp component member to be disposed. It is possible to prevent or suppress the reflected light from the reflector of the light projecting unit from being blocked.

  Although a specific configuration for realizing this is not particularly limited, a configuration in which the second top plate portion is inclined and extended downward toward the front of the lamp rather than the first top plate portion. Then, the first and second light projecting units have the same configuration, and the light irradiation direction from the second light projecting unit is set to be lower than the light irradiation direction from the first light projecting unit. It becomes possible to do.

  In the above configuration, the configuration of the lamp body further includes a second connection portion extending upward from the front end position of the second top plate portion, and a third ceiling extending from the upper end position of the second connection portion toward the front of the lamp. If it is set as the structure provided with the board part, and it is set as the structure by which the power supply unit for lighting the 1st and 2nd light projection unit was attached to the lower surface of the 3rd top-plate part, 1st and 2nd The power supply unit can be arranged in the lamp chamber while preventing the irradiation light from the light projecting unit from being blocked.

  In this case, the “second connecting portion” may be formed so as to extend along the vertical plane, or may be formed so as to extend in a direction inclined with respect to the vertical plane.

  Further, the “third top plate portion” may be formed so as to extend along a horizontal plane, or may be formed so as to extend in a direction inclined with respect to the horizontal plane.

  In the above configuration, if at least one of the first and second light projecting units is arranged in a state in which a plurality of the first and second light projecting units are arranged in a direction intersecting the lamp front-rear direction, a desired light distribution pattern is formed. This can be done more easily.

The front view which shows the lamp which concerns on one Embodiment of this invention II-II sectional view of FIG. Detailed view of III in Fig. 2 IV direction arrow view of FIG. The same figure as FIG. 2 which shows the 1st modification of the said embodiment. The same figure as FIG. 2 which shows the 2nd modification of the said embodiment. The same figure as FIG. 1 which shows the 3rd modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a lamp 10 according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG.

  As shown in these drawings, the lamp 10 according to the present embodiment is a landing light for an aircraft, and is mounted on the front end of the lower surface of the fuselage portion of the fuselage 2.

  In these drawings, the direction indicated by X is “front” as a lamp (“forward” as an aircraft), and the direction indicated by Y is “left direction” orthogonal to “front” (“left direction” as an aircraft) However, it is “right direction” in the front view of the lamp, and the direction indicated by Z is “upward direction”. The same applies to other figures.

  As shown in FIG. 1, the lamp 10 according to the present embodiment includes six light projecting units 20AL, 20AR, 20BL, 20BR, 20CL, and 20CR, and has a symmetrical shape as a whole. Each of the light projecting units 20AL to 20CR is supported by the lamp body 12 in a state where a part of the light projecting units 20AL to 20CR is housed in a lamp chamber 16 formed by the lamp body 12 and a translucent cover 14 attached to the lamp body 12. ing.

  The lamp chamber 16 has a rectangular inner peripheral surface shape when the lamp is viewed from the front.

  The translucent cover 14 is made of a transparent plate having a rectangular outer shape, and is formed so as to extend along the surface shape of the lower front end of the body portion of the body 2.

  Specifically, the translucent cover 14 bulges in a convex curved shape toward the front and the bottom of the lamp by bending a plate member made of transparent resin (for example, colorless and transparent acrylic resin). Is formed. And this translucent cover 14 is formed so that the front-end part may extend diagonally upward toward the front of the lamp, and the rear-end part may extend horizontally toward the rear of the lamp.

  The lamp body 12 is composed of a resin injection molded product. The lamp body 12 opens toward the front and the bottom of the lamp, and is fixed to the outer peripheral edge portion of the translucent cover 14 at an outer peripheral flange portion 12a formed so as to surround the periphery thereof. This fixing is performed by screwing the lamp body 12 to the translucent cover 14 at a plurality of locations in the circumferential direction along the outer peripheral flange portion 12a. This screw tightening is performed by inserting a countersunk screw 52 from the outer surface side of the translucent cover 14 and tightening with a nut 54 on the back surface side of the outer peripheral flange portion 12a. The translucent cover 14 is configured such that the surface of the countersunk screw 52 is flush with the surface of the translucent cover 14 when the screw tightening is completed.

  The lamp body 12 is formed in a staircase shape so as to rise to the front of the lamp.

  Specifically, the lamp body 12 includes a rear wall portion 12b extending upward from an inner peripheral edge of a lamp rear side region of the lamp chamber 16 in the outer peripheral flange portion 12a, and a lamp member from an upper end position of the rear wall portion 12b. A top plate portion 12c extending toward the front, a connection portion 12d extending upward from the front end position of the top plate portion 12c, and a top plate portion 12e extending toward the front of the lamp from the upper end position of the connection portion 12d; A connecting portion 12f extending upward from the front end position of the top plate portion 12e, a top plate portion 12g extending from the upper end position of the connecting portion 12f toward the front of the lamp, and upward from the front end position of the top plate portion 12g. A connecting portion 12h extending toward the front and a top plate portion 12i extending from the upper end position of the connecting portion 12h toward the front of the lamp to the inner peripheral edge of the lamp front side region of the lamp chamber 16 in the outer peripheral flange portion 12a. Eteiru.

  The four top plate portions 12c, 12e, 12g, and 12i all extend along the horizontal plane. At this time, the three top plate portions 12c, 12e, and 12g are formed with substantially the same longitudinal length, but the top plate portion 12i is formed with a longer longitudinal length.

  A pair of left and right openings 12c1, 12e1, and 12g1 are formed in the three top plates 12c, 12e, and 12g, respectively. Each opening part 12c1, 12e1, 12g1 has the rectangular opening shape of the same size.

  The rear wall portion 12b extends in a direction slightly inclined forward with respect to the upper vertical direction, the connection portions 12d and 12f extend in a direction slightly inclined backward with respect to the upper vertical direction, and the connection portion 12h is It extends in a direction inclined further forward than the rear wall portion 12b. In that case, the three connection parts 12d, 12f, and 12h are formed at the same height, and the rear wall part 12b is formed higher than these.

  The six light projecting units 20AL to 20CR are composed of a pair of left and right light projecting units 20AL and 20AR, a pair of left and right light projecting units 20BL and 20BR, and a pair of left and right light units located on the upper side. Light projecting units 20CL and 20CR.

  Each of the light projecting units 20AL to 20CR is configured to reflect the emitted light from the light emitting element 22 toward the front of the lamp by the reflectors 24AL to 24CR.

  Of the six light projecting units 20AL to 20CR, four light projecting units 20AL to 20BR have the same configuration, but the remaining two light projecting units 20CL and 20CR have a different configuration. However, the configuration of the reflectors 24CL and 24CR is different from that of the four projector units 20AL to 20BR, but the other configurations are the same as these.

  Each of the light projecting units 20AL to 20CR includes a heat sink 26 having a plurality of heat radiation fins 26a formed on the upper surface. The heat sink 26 is configured as a plate-like member made of metal (for example, made of aluminum die casting). Each of the light projecting units 20AL to 20CR has a configuration in which the light emitting element 22 and the reflectors 24AL to 24CR are fixed to the lower surface of the heat sink 26.

  The light-emitting element 22 is a white light-emitting diode having a horizontally-long rectangular light-emitting surface, and is mounted on the substrate 28 with the light-emitting surface vertically downward, and is fixed to the lower surface of the heat sink 26 via the substrate 28. Has been.

  The pair of left and right light projecting units 20AL and 20AR located in the lower stage is attached to the top plate 12c with the heat radiating fins 26a of the heat sink 26 exposed from the opening 12c1 of the top plate 12c to the outside of the lamp chamber 16. ing.

  Each of the light projecting units 20AL and 20AR is configured to reflect the emitted light from the light emitting element 22 in the front direction of the lamp by the reflectors 24AL and 24AR.

  The pair of left and right light projecting units 20BL and 20BR located in the middle stage are attached to the top plate 12e with the heat radiating fins 26a of the heat sink 26 exposed from the opening 12e1 of the top plate 12e to the outside of the lamp chamber 16. ing.

  Each of the light projecting units 20BL and 20BR is also configured to reflect the emitted light from the light emitting element 22 toward the front of the lamp by the reflectors 24BL and 24BR.

  The pair of left and right light projecting units 20CL and 20CR located in the upper stage are attached to the top plate 12g with the heat radiating fins 26a of the heat sink 26 exposed from the opening 12g1 of the top plate 12g to the outside of the lamp chamber 16. ing.

  Each of the light projecting units 20CL and 20CR directs the light emitted from the light emitting element 22 to the lamp front obliquely downward direction (specifically, a downward direction of about 5 to 30 degrees with respect to the front direction of the lamp) by the reflectors 24CL and 24CR. It is configured to reflect.

  At that time, the reflector 24CL of the light projecting unit 20CL located on the left side emits the light emitted from the light emitting element 22 in a diagonally forward left direction of the lamp (specifically, a direction leftward by about 15 to 60 ° with respect to the front direction of the lamp). It is comprised so that it may reflect toward. On the other hand, the reflector 24CR of the light projecting unit 20CR located on the right side directs the emitted light from the light emitting element 22 obliquely forward to the right of the lamp (specifically, the direction rightward by about 15 to 60 ° with respect to the front direction of the lamp). It is configured to reflect.

  A power supply unit 30 for lighting the six light projecting units 20AL to 20CR is attached to the lower surface of the top plate portion 12i.

  The power supply unit 30 has a substantially rectangular parallelepiped outer shape, and has a height that is slightly lower than the height of the connection portion 12h. An outer peripheral flange portion 30 a extending along a horizontal plane is formed at the upper end portion of the outer peripheral surface of the power supply unit 30. The power supply unit 30 is screwed and fixed to the top plate portion 12i at each corner portion of the outer peripheral flange portion 30a. This screw tightening and fixing is performed by a screw 62 and a nut 64.

  The power supply unit 30 is electrically connected to the light emitting elements 22 of the light projecting units 20AL to 20CR via wiring members (not shown) arranged so as to extend along the inner surface of the lamp body 12. .

  Note that the lamp 10 according to the present embodiment is attached to the structural member of the body portion of the body 2 via an attachment member (not shown).

  FIG. 3 is a detailed view of III in FIG. 4 is a view taken in the direction of the arrow IV in FIG.

  As shown in these drawings, the reflector 24BR of the light projecting unit 20BR located on the right side of the middle stage has a reflecting surface 24BRa composed of a plurality of reflecting elements 24BRs. The reflector 24BR reflects the light emitted from the light emitting element 22 in each reflecting element 24BRs in a slightly diffused state with the front direction of the lamp as the center. The reflector 24BR of the light projecting unit 20BL located on the left side of the middle stage and the reflectors 24AL and 24AR of the light projecting units 20AL and 20AR located on the lower stage also have the same reflecting surface shape as that of the reflector 24BR.

  The reflector 24CR of the light projecting unit 20CR located on the upper right side has a reflective surface 24CRa composed of a plurality of reflective elements 24CRs. The reflector 24CR diffuses the light emitted from the light emitting element 22 in each of the reflecting elements 24CRs slightly about 5 to 30 ° downward and about 15 to 60 ° to the right with respect to the front direction of the lamp. Reflected in the state. Note that the reflector 24CL of the light projecting unit 20CL located on the left side of the upper stage has a reflective surface shape that is symmetrical to the reflector 24CR.

  The heat sink 26 of each of the light projecting units 20BR and 20CR includes a thick portion 26A having a rectangular outer shape that is slightly larger than the openings 12e1 and 12g1 of the top plate portions 12e and 12g of the lamp body 12 in plan view. An annular thin portion 26B having a rectangular outer shape that is slightly larger than the thick portion 26A on the outer peripheral side of the thick portion 26A. At that time, the thin portion 26B has an upper surface formed flush with the upper surface of the thick portion 26A, and a lower surface formed so as to rise from the lower surface of the thick portion 26A.

  The substrate 28 on which the light emitting elements 22 of the light projecting units 20BR and 20CR are mounted is fixed to the lower surface of the heat sink 26 at the thick portion 26A. A plurality of heat radiation fins 26a of the heat sink 26 are formed on the upper surface of the thick portion 26A. The plurality of heat radiating fins 26a are formed to extend in the left-right direction with a certain interval in the front-rear direction of the lamp.

  Upper end flange portions 24BRb and 24CRb extending in the horizontal direction toward the rear side of the lamp are formed at the upper end portions of the reflectors 24BR and 24CR. The reflectors 24BR and 24CR are screwed and fixed to the thick portion 26A of the heat sink 26 with screws 72 at two left and right portions of the upper end flange portions 24BRb and 24CRb.

  The light projecting units 20BR and 20CR are attached to the top plate portions 12e and 12g at the thin portion 26B of the heat sink 26. That is, in this attachment, the screws 82 are inserted into the screw insertion holes 26b of the heat sink 26 at three positions, that is, the center position in the left-right direction on the front side of the lamps 12e1, 12g1 and the left and right end positions on the rear side of the lamps 12e1, 12g1. The top plate portions 12e and 12g are inserted into screw insertion holes (not shown) and tightened with nuts 84 on the top surface sides of the top plate portions 12e and 12g.

  A packing 40 is interposed between the heat sink 26 and the top plate portions 12e and 12g in order to ensure airtightness in the lamp chamber 16 in a state in which the light projecting units 20BR and 20CR are attached to the top plate portions 12e and 12g. It is disguised.

  Specifically, on the upper surface of the outer peripheral edge portion of the thick portion 26A of the heat sink 26, a groove portion 26c extending in a rectangular ring shape so as to surround the plurality of heat radiation fins 26a is formed. The heat sink 26 is pressed against the lower surfaces of the top plate portions 12e and 12g in a state where the packing 40 is attached to the groove portion 26c so that the substantially upper half portion protrudes from the upper surface of the thick portion 26A. As a result, the packing 40 is elastically compressed and deformed, so that the airtightness in the lamp chamber 16 is secured around the openings 12e1 and 12g1.

  Next, the effect of this embodiment is demonstrated.

  The lamp 10 according to the present embodiment includes a part of the light projecting unit 20BR (first light projecting unit) and a light projecting unit 20CR (second light projecting unit) in a lamp chamber formed by the lamp body 12 and the translucent cover 14. The lamp body 12 includes a top plate portion 12e (first top plate portion) and a top plate portion 12g (second top plate portion) formed in a staircase shape. Further, each of the light projecting units 20BR and 20CR has a configuration in which the light emitting element 22 and the reflectors 24BR and 24CR are fixed to the lower surface of the heat sink 26 having the heat radiating fins 26a formed on the upper surface. In each of the light projecting units 20BR and 20CR, the heat radiating fins 26a of the heat sink 26 are exposed to the outside of the lamp chamber 16 from the openings 12e1 and 12g1 of the top plates 12e and 12g. Top plate portion 12e in state, because the attached respectively to 12g, it is possible to obtain the following effects.

  That is, in the lamp 10 according to the present embodiment, the lamp is connected to the connection portion 12f (first connection portion) that connects the top plate portion 12e and the top plate portion 12g that rises in front of the lamp. Since the reflector 24CR of the light projecting unit 20CR is arranged on the front side, as compared with the conventional case where a plurality of light projecting units are arranged in the vertical direction on the same vertical plane. The vertical width of the entire lamp can be reduced, whereby the lamp 10 can be made compact.

  Further, in the state where the light projecting units 20BR and 20CR are supported by the lamp body 12, the heat radiating fins 26a of the heat sink 26 are exposed to the outside of the lamp chamber 16 from the openings 12e1 and 12g1 of the top plates 12e and 12g. Therefore, the heat generated in the light emitting elements 22 of the light projecting units 20BR and 20CR can be efficiently dissipated from the heat sink 26 to the outside of the lamp chamber 16.

  As described above, according to the present embodiment, the lamp 10 including the light projecting units 20BR and 20CR configured to reflect the light emitted from the light emitting element 22 toward the front of the lamp by the reflectors 24BR and 24CR. A compact structure and excellent heat dissipation can be achieved.

  In addition, in the present embodiment, the light irradiation direction from the light projecting unit 20CR is set to be lower than the light irradiation direction from the light projecting unit 20BR, so that the light irradiated from each light projecting unit 20BR, 20CR is combined. Thus, the light irradiation range can be expanded in the vertical direction, which makes it possible to easily form a desired light distribution pattern.

  At this time, in the present embodiment, the reflector 24CR of the light projecting unit 20CR is used as a specific configuration for making the light irradiation direction from the light projecting unit 20CR downward with respect to the light irradiation direction from the light projecting unit 20BR. Since the light emitted from the light emitting element 22 is reflected downward from the reflector 24BR of the optical unit 20BR, the shape of the top plate portions 12e and 12g and the top plate portions 12e and 12g of the light projecting units 20BR and 20CR are configured. The mounting structure can be made common.

  Furthermore, in the present embodiment, the lamp body 12 extends from the front end position of the top plate portion 12g upward (second connection portion) 12h and from the upper end position of the connection portion 12h toward the front of the lamp. Since the top plate portion 12i (third top plate portion) is provided, and the power supply unit 30 for lighting the light projecting units 20BR and 20CR is attached to the lower surface of the top plate portion 12i, each light projecting unit The power supply unit 30 can be disposed in the lamp chamber 16 after the irradiation light from the 20BR and 20CR is not blocked.

  Further, in the present embodiment, since the light projecting units 20BL and 20CL that are paired with the light projecting units 20BR and 20CR are provided, it becomes easier to form a desired light distribution pattern.

  At that time, in the present embodiment, the reflector 24CL of the light projecting unit 20CL located on the left side reflects the emitted light from the light emitting element 22 toward the left direction by about 15 to 60 degrees with respect to the front direction of the lamp, Since the light emitted from the light emitting element 22 is reflected by the reflector 24CR of the light projecting unit 20CR located on the right side toward the right direction by about 15 to 60 ° with respect to the front direction of the lamp, the light irradiation range Can be greatly expanded in the left-right direction, which makes it easier to form a desired light distribution pattern.

  In addition, in the present embodiment, in addition to the pair of left and right light projecting units 20BL, 20BR, 20CL, and 20CR arranged in two upper and lower stages, a pair of left and right light projecting units 20BL and 20BR are provided on the lower side thereof. Since the pair of left and right light projecting units 20AL and 20AR having the same configuration as that of the lamp is disposed, it is possible to secure a sufficient amount of irradiation light in the front direction of the lamp.

  In the above embodiment, the light projecting unit 20CL located on the left side irradiates the lamp front left obliquely downward direction, and the light projecting unit 20CR located on the right side illuminates the lamp front obliquely lower right direction. Although described as a thing, it is also possible to comprise these light projection units 20CL and 20CR so that it may irradiate the diagonally downward direction of the lamp front direction. By doing so, the light irradiation range is expanded in the vertical direction. This makes it possible to illuminate the front direction of the lamp more brightly.

  In the above embodiment, the lamp 10 is described as an aircraft landing lamp. However, the lamp 10 can be used for other purposes, and in this case, of the six light projecting units 20AL to 20CR. It is also possible to adopt a configuration in which part or all of the lights are selectively lit.

  Next, a modification of the above embodiment will be described.

  First, a first modification of the above embodiment will be described.

  FIG. 5 is a view similar to FIG. 2 showing the lamp 110 according to this modification.

  As shown in the figure, the basic configuration of the lamp 110 according to this modification is the same as that of the above embodiment, but the configuration of the lamp body 112 is partially different from that of the above embodiment. Accordingly, the configuration of the translucent cover 114 is partially different from that of the above embodiment.

  Specifically, the lamp body 112 of the present modification includes a top plate portion 112g (second top plate portion) that supports the light projecting unit 20CR (second light projecting unit) and a top plate portion that supports the power supply unit 30. A connecting portion 112h (second connecting portion) between 112i (third top plate portion) and the connecting portion 12h of the above-described embodiment is formed to have a length that is about half that of the connecting portion 12h.

  Accordingly, the lamp body 112 is set such that the position of the top plate portion 112i is lower than the top plate portion 12i of the above-described embodiment, and the position of the power supply unit 30 is accordingly larger than that of the above-described embodiment. It is set to a low position. In addition, the fixing position of the lamp front side region of the lamp chamber 16 and the translucent cover 114 in the outer peripheral flange portion 112a of the lamp body 112 is also set to a lower position than in the above embodiment.

  By adopting the configuration of this modification, the vertical width of the entire lamp can be made smaller than in the case of the above-described embodiment, and thus the lamp 110 can be made more compact.

  In this modification, the reflector 24CR of the light projecting unit 20CR and the power supply unit 30 disposed on the front side of the lamp partially overlap in the front view of the lamp, but the reflector 24CR of the light projecting unit 20CR is a light emitting element. Since the light emitted from 22 is reflected obliquely downward, it is possible to prevent the reflected light from the reflector 24CR from being blocked by the power supply unit 30 in advance.

  Next, a second modification of the above embodiment will be described.

  FIG. 6 is a view similar to FIG. 2 showing a lamp 210 according to this modification.

  As shown in the figure, the basic structure of the lamp 210 according to this modification is the same as that of the first modification, but the structure of the light projecting unit 220CR (second light projecting unit) and the lamp The configuration of the body 212 is partially different from that of the first modification. The configuration of the translucent cover 214 is the same as that in the first modification.

  Specifically, in the lamp body 212 of the present modification, the top plate portion 212g (second top plate portion) that supports the light projecting unit 220CR is directed forward of the lamp rather than the top plate portion 112g of the first modification example. It is formed so as to extend while being inclined downward. At this time, the downward inclination angle of the top plate portion 212g is set to a value of about 5 to 30 ° with respect to the horizontal plane.

  The top plate portion 212i (third top plate portion) that supports the power supply unit 30 is located at the same height as the top plate portion 112i of the first modified example. The top plate portion 212i and the top plate portion A connecting portion 212h (second connecting portion) between the connecting portion 112g and the connecting portion 112g is formed at the same inclination angle as the connecting portion 112h of the first modified example.

  In the light projecting unit 220CR of this modification, the reflector 224CR has the same reflection surface shape as the reflector 24BR of the light projecting unit 20BR (first light projecting unit). However, the reflector 224CR is fixed to the heat sink 26 in a state in which the reflector 224CR faces rightward by about 15 to 60 ° with respect to the front direction of the lamp.

  By adopting the configuration of the present modified example, it is possible to make more emitted light from the light emitting element 22 enter the reflector 224CR than in the case of the first modified example, thereby irradiating from the light projecting unit 220CR. The light can be brighter.

  Even when the configuration of this modification is employed, the lamp 210 can be made more compact by further reducing the vertical width of the entire lamp, as in the case of the first modification.

  Also in the lamp 210 according to this modification, the reflector 224CR of the light projecting unit 220CR and the power supply unit 30 arranged on the front side of the lamp partially overlap in the front view of the lamp, but from the light projecting unit 220CR. Since the irradiation light is obliquely downward, it is possible to prevent the irradiation light from being blocked by the power supply unit 30 in advance.

  In addition, in the lamp 210 which concerns on this modification, the light projection unit 220CR is the structure which irradiates the diagonally downward direction right front of a lamp | ramp, However, this light projection unit 2220CR irradiates the diagonally downward direction of a lamp front direction. A configuration is also possible. By adopting such a configuration, it becomes possible to illuminate the front direction of the lamp more brightly while expanding the light irradiation range in the vertical direction, and the light projecting unit 220CR has the same structure as the light projecting unit 20BR. It is also possible to do.

  Next, a third modification of the above embodiment will be described.

  FIG. 7 is a view similar to FIG. 1 showing a lamp 310 according to this modification.

  As shown in the figure, the basic configuration of the lamp 310 according to this modification is the same as that of the above embodiment, but three light projecting units 320A and 320B are used instead of the six light projecting units 20AL to 20CR. , 320C is different from the above embodiment in that the configuration is provided, and accordingly, the configurations of the lamp body 312 and the translucent cover 314 are also partially different from those in the above embodiment.

  That is, in this modification, a light projecting unit 320A is arranged instead of the pair of left and right light projecting units 20AL and 20AR in the above embodiment, and the pair of left and right light projecting units 20BL and 20BR in the above embodiment is arranged. Instead, a light projecting unit 320B (first light projecting unit) is arranged, and a light projecting unit 320C (first light projecting unit) is used instead of the pair of left and right light projecting units 20CL and 20CR in the above embodiment. Has been placed.

  The light projecting unit 320A located in the lower stage has a reflector 324A having a wider left and right width than the light reflectors 24AL and 24AR of the light projecting units 20AL and 20AR of the above-described embodiment. Same as 24AL and 24AR.

  The light projecting unit 320B located in the middle stage also has the reflector 324B formed with a wider left and right width than the light reflectors 24BL and 24BR of the light projecting units 20BL and 20BR of the above-described embodiment, but the shape of the reflecting surface is each reflector. This is the same as in the case of 24BL and 24BR.

  The light projecting unit 320C located in the upper stage has a configuration in which the reflector 324C is integrated with the reflectors 24CL and 24CR of the light projecting units 20CL and 20CR of the above embodiment. That is, the reflector 324C has a left half portion 324C1 having the same reflection surface shape as the reflector 24CL of the above embodiment, and a right half portion 324C2 having the same reflection surface shape as the reflector 24CR of the embodiment. Have.

  The configurations of the light emitting element 22 and the substrate 28 in each of the light projecting units 320A, 320B, and 320C are the same as those in the above embodiment, but the heat sink 326 is formed with a wider lateral width than the heat sink 26 in the above embodiment. .

  The lamp body 312 and the translucent cover 314 of this modification are formed with a narrower left and right width than the lamp body 12 and the translucent cover 14 of the above embodiment.

  And the lamp body 312 is supported by the outer peripheral edge of the translucent cover 314 in the outer peripheral flange part 312a similarly to the lamp body 12 of the said embodiment.

  The lamp body 312 has a rear wall portion 312b, four top plate portions 312c, 312e, 312g, 312i and three connection portions 312d, 312f, 312h at the same position as the lamp body 12 of the above embodiment. Is formed.

  Also in the lamp 310 according to this modification, the front direction of the lamp can be illuminated brightly by the irradiation light from the light projecting units 320A and 320B, and the diagonally downward direction in front of the lamp can be changed horizontally by the irradiation light from the light projection unit 320C. A wide range of directions can be irradiated.

  In addition, by adopting the configuration of this modification, the left-right width of the entire lamp can be made smaller than in the case of the above-described embodiment, whereby the lamp 310 can be made more compact.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  The invention of the present application is not limited to the configuration described in the above-described embodiment and its modifications, and a configuration with various other changes can be adopted.

2 Airframe 10, 110, 210, 310 Lamp 12, 112, 212, 312 Lamp body 12a, 112a, 312a Outer peripheral flange 12b, 312b Rear wall 12c, 312c Top plate 12c1, 12e1, 12g1 Opening 12d, 312d Connection Section 12e, 312e Top panel (first top panel)
12f, 312f connection part (first connection part)
12g, 112g, 212g, 312g Top plate (second top plate)
12h, 112h, 212h, 312h Connection part (second connection part)
12i, 112i, 212i, 312i Top plate (third top plate)
14, 114, 214, 314 Translucent cover 16 Light chamber 20AL, 20AR, 320A Floodlight unit 20BL, 20BR, 320B Floodlight unit (first floodlight unit)
20CL, 20CR, 220CR, 320C Projection unit (second projection unit)
22 Light emitting element 24AL, 24AR, 24BL, 24BR, 24CL, 24CR, 224CR, 324A, 324B, 324C Reflector 24BRa, 24CRa Reflective surface 24BRb, 24CRb Upper end flange part 24BRs, 24CRs Reflective element 26, 326 Heat sink 26A Thick part 26B Thin part 26a Radiation fin 26b Screw insertion hole 26c Groove portion 28 Substrate 30 Power supply unit 30a Outer flange portion 40 Packing 52 Countersunk screw 54, 64, 84 Nut 62, 72, 82 Screw 324C1 Left half 324C2 Right half

Claims (5)

In a lamp including first and second light projecting units configured to reflect light emitted from a light emitting element toward the front of the lamp by a reflector,
Each of the light projecting units is supported by the lamp body in a state in which a part of the light projecting unit is accommodated in a lamp chamber formed by a lamp body and a translucent cover attached to the lamp body.
The lamp body includes a first top plate portion extending forward of the lamp, a first connection portion extending upward from a front end position of the first top plate portion, and a front of the lamp from an upper end position of the first connection portion. And a second top plate portion extending toward
An opening is formed in each of the first and second top plates,
Each of the light projecting units includes a heat sink having a heat radiating fin formed on the upper surface, and the light emitting element and the reflector are fixed to the lower surface of the heat sink.
The first light projecting unit is attached to the first top plate in a state in which the heat radiating fins of the heat sink of the light projecting unit are exposed outside the lamp chamber from the opening of the first top plate.
The second light projecting unit is attached to the second top plate in a state in which the heat radiating fins of the heat sink of the light projecting unit are exposed outside the lamp chamber from the opening of the second top plate. A lamp characterized by that.   2. The lamp according to claim 1, wherein a light irradiation direction from the second light projecting unit is set downward from a light irradiation direction from the first light projecting unit.   The said 2nd top-plate part is formed so that it may incline and extend in the downward direction toward a lamp front rather than the said 1st top-plate part, The lamp | ramp of Claim 2 characterized by the above-mentioned. The lamp body includes a second connection portion that extends upward from the front end position of the second top plate portion, and a third top plate portion that extends from the upper end position of the second connection portion toward the front of the lamp. And
The lamp according to any one of claims 1 to 3, wherein a power supply unit for lighting the first and second light projecting units is attached to a lower surface of the third top plate portion.   5. The lamp according to claim 1, wherein at least one of the first and second light projecting units is arranged in a state in which a plurality of the first and second light projecting units are arranged in a direction intersecting the lamp front-rear direction. .

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