JP2020119634A - Lighting fixture - Google Patents

Abstract

To provide a lighting fixture which improves radiation performance of a lighting fixture for aircraft.SOLUTION: A lighting fixture includes: a lighting fixture outer housing 4 which is constituted by a lamp housing 2 having an opening and a cover 3 mounted on the lamp housing in a state of closing the opening, and whose internal space is formed as an arrangement space 5; a heat radiation plate 11 arranged in the arrangement space and for partitioning the arrangement space into a first space 5a and a second space 5b; a lighting fixture unit 12 arranged in the first space and having a light source; and a control substrate 10 arranged in the second space in a state of being mounted on the lamp housing, and for controlling the light source. The heat generated in the lighting fixture unit is discharged via the heat radiation plate.SELECTED DRAWING: Figure 3

Description

The present invention relates to a technical field of a lamp in which a lamp unit is arranged inside an outer casing of the lamp.

Some lamps include a lamp unit having a light source arranged inside a lamp outer casing formed of a cover and a lamp housing.

Some of such lamps are used as aircraft lamps (for example, refer to Patent Document 1 and Patent Document 2). There are various types of aircraft lighting depending on the application, and as external lighting, for example, collision prevention lights that prevent collisions between aircraft, aviation lights that indicate the flight attitude and flight direction of aircraft, runways during takeoff and landing. There are landing lights that illuminate, and logo lights that illuminate the logo printed on the aircraft.

In such external lighting, in order to illuminate the runway or the like brightly and to clarify its existence in other aircraft or the like, it is necessary to increase the amount of light flux emitted from the light source to secure high brightness.

JP, 2010-33840, A JP, 2010-33841, A

However, when the amount of light flux emitted from the light source is increased, the amount of heat generated from the light source and the control board that controls the light source is correspondingly increased. Therefore, it is necessary to improve the heat dissipation performance. In particular, when a light emitting diode is used as the light source, the amount of heat generated tends to be larger than when other light sources such as a halogen lamp are used, and high heat dissipation performance is required.

Therefore, it is an object of the lamp of the present invention to improve heat dissipation performance.

Firstly, the lamp according to the present invention is a lamp outer casing including a lamp housing having an opening and a cover attached to the lamp housing in a state where the opening is closed, and an inner space formed as an arrangement space. A radiator plate arranged in the arrangement space and partitioning the arrangement space into a first space and a second space, a lamp unit having a light source arranged in the first space, and a lamp unit attached to the lamp housing. A control board arranged in a second space for controlling the light source is provided, and heat generated in the lamp unit is radiated through the heat dissipation plate.

As a result, the light source, which is a heating element, and the control board are respectively arranged in the first space and the second space partitioned by the heat radiating plate, and heat generated in the lamp unit is radiated through the heat radiating plate.

Secondly, in the above-described lamp according to the present invention, it is preferable that the lamp unit is attached to the heat dissipation plate and the heat dissipation plate is attached to the lamp housing.

Accordingly, by removing the heat dissipation plate from the lamp housing, the lamp unit and the heat dissipation plate are integrated and separated from the lamp housing.

Thirdly, in the above-described lamp according to the present invention, the outer peripheral portion of the heat dissipation plate is provided as an attached portion attached to the lamp housing by screwing, and the lamp unit is attached inside the attached portion. Is desirable.

This makes it difficult for the attachment/detachment jig to interfere with the lamp unit when attaching/detaching the heat sink to/from the lamp housing.

Fourthly, in the above-described lamp according to the present invention, it is preferable that a plurality of the lamp units be provided and the plurality of lamp units be attached to the heat dissipation plate.

As a result, light is emitted from each of the light sources of the plurality of lamp units, so that it is possible to arbitrarily set the number of lamp units and the light emission state.

Fifthly, in the above-described lamp according to the present invention, the lamp unit is provided with a reflector that reflects light emitted from the light source, and the lamp unit having the reflectors of different types on the heat dissipation plate is provided. It is desirable to be able to attach separately.

As a result, it is possible to attach a desired type of lamp unit to the heat dissipation plate according to the function of the lamp, and it is possible to use other parts in common for manufacturing a plurality of types of lamps.

Sixth, the above-described lamp according to the present invention is preferably provided as a landing light or a running light of an aircraft.

As a result, in the aircraft, the light source, which is a heating element, and the control board are respectively arranged in the first space and the second space partitioned by the heat radiating plate, and the heat generated in the lamp unit is radiated through the heat radiating plate. It

According to the present invention, the light source, which is a heating element, and the control board are respectively arranged in the first space and the second space partitioned by the heat radiating plate, and the heat generated in the lamp unit is radiated through the heat radiating plate. Therefore, the mutual influence of the heat generated in the light source and the heat generated in the control board on the light source and the control board is reduced, and the heat dissipation performance can be improved.

2 to 6 show an embodiment of a lamp according to the present invention, and this figure is a perspective view showing the lamp. It is an exploded perspective view of a lamp. It is sectional drawing of a lamp. It is an exploded perspective view of a lamp unit. FIG. 5 is an exploded perspective view of the lamp unit shown in a state different from that of FIG. 4. It is a perspective view showing a lamp provided with four lamp units.

Embodiments for carrying out the lamp of the present invention will be described below with reference to the accompanying drawings. Below, the example which applied this invention lighting as an aircraft lighting is shown. However, the scope of application of the lamp of the present invention is not limited to the lamp for aircraft, and for example, it can be applied to moving bodies other than aircraft such as ships and automobiles, and is also applied to outdoor lighting and the like. It is possible.

In the lamp, the lamp unit having the light source is arranged inside the lamp outer casing, and the lamp outer casing is composed of the lamp housing and the cover. In the following description, the connecting direction of the lamp housing and the cover is the front-back direction. The cover is the front, the lamp housing is the rear, and the front, rear, up, down, left, and right directions are shown. It should be noted that the forward, backward, upward, downward, leftward, and rightward directions shown below are for convenience of description, and the present invention is not limited to these directions.

The lamp 1 is, for example, external lighting, is used as a landing light, a running light, an aviation light, or the like, and is attached to the body of an aircraft. The lamp 1 includes a lamp housing 2 having an opening at a front end and a cover 3 attached to the lamp housing 2 in a state where the opening of the lamp housing 2 is closed (see FIGS. 1 to 3). The lamp housing 2 and the cover 3 constitute a lamp outer casing 4, and an inner space of the lamp outer casing 4 is formed as an arrangement space 5.

Each part of the lamp housing 2 is integrally formed of a metal material such as aluminum. The lamp housing 2 includes a rear surface portion 6 facing in the front-rear direction, a peripheral surface portion 7 protruding forward from the outer peripheral portion of the rear surface portion 6, and a flange-shaped coupling portion 8 protruding outward from a front end portion of the peripheral surface portion 7. Have The peripheral surface portion 7 is formed, for example, in a substantially cylindrical shape.

The cover 3 is formed by integrally forming a concave cover portion 3a opened rearward and a flange-shaped coupling portion 3b protruding outward from a rear end portion of the cover portion 3a.

The lamp housing 2 is provided with mounting bosses 9, 9,... The rear surface portion 6 is provided with two heat dissipation portions 6a, 6a. The front surfaces of the heat dissipation portions 6a, 6a are located on the front side of the other portions of the rear surface portion 6 and are made of a metal material having a high heat dissipation property.

The control boards 10 and 10 are vertically spaced apart from each other in the arrangement space 5 of the lamp housing 2, and the control boards 10 and 10 are in surface contact with the heat radiating portions 6a and 6a. It is attached by 100, 100,.... The control boards 10 and 10 have a function of controlling the on/off state of a light source, which will be described later.

A heat radiating plate 11 is arranged in the arrangement space 5 of the lamp housing 2, and the heat radiating plate 11 has an outer shape, for example, a circular shape, and is slightly smaller than the outer shape of the peripheral surface portion 7 of the lamp housing 2. The outer peripheral portion of the heat sink 11 is provided as an attached portion 11a attached to the lamp housing 2, and the attached portion 11a has first screw insertion holes 11b, 11b,... There is. Second screw insertion holes 11c, 11c,... Are formed in the heat dissipation plate 11 at positions inside the mounted portion 11a, and the second screw insertion holes 11c, 11c,. Two of each are formed. The heat sink 11 has cord insertion holes 11d and 11d vertically spaced apart from each other.

In the heat sink 11, the second mounting screws 200, 200,... Inserted from the front side through the first screw insertion holes 11b, 11b,... Are respectively screwed into the mounting bosses 9, 9,. As a result, the lamp housing 2 is attached. In the state where the heat dissipation plate 11 is attached to the lamp housing 2, the arrangement space 5 is partitioned by the heat dissipation plate 11 into front and back, and the space on the front side and the space on the rear side of the heat dissipation plate 11 are the first space 5a and the second space 5a, respectively. Is formed as a space 5b (see FIG. 3).

The control boards 10 and 10 are arranged vertically in the second space 5b, and the control boards 10 and 10 are not in contact with the rear surface of the heat dissipation plate 11.

In the first space 5a of the lamp housing 2, the lamp units 12, 12 are arranged vertically. The lamp unit 12 has a reflector 13, a heat sink 14, a holder 15, and a light source module 16 (see FIGS. 3 to 5).

The reflector 13 includes a mounting base portion 17 that is formed in a horizontally long shape that is oriented substantially vertically, and a reflecting portion 18 that projects obliquely forward from the mounting base portion 17.

The mounting base portion 17 has a front edge formed in a curved shape so that the width in the left-right direction gradually increases from the center portion to the left and right ends, and has a concave portion 17a at one end portion in the left-right direction. Screw insertion holes 17b, 17b are formed at both left and right ends of the mounting base portion 17.

The heat sink 14 includes a base surface portion 19 facing in the up-down direction, a mounted wall portion 20 protruding upward from a rear end portion of the base surface portion 19, and heat radiation fins 21, 21,... Have Screw holes 14a, 14a opened downward are formed at both left and right ends of the heat sink 14 (see FIG. 5).

Positioning pins 19a, 19a protruding downward are provided on the lower surface side of the base surface portion 19 so as to be separated from each other in the left and right directions. The base surface portion 19 is formed with screw holes 19b and 19b opened downward near the positioning pins 19a and 19a. At a position near one end in the left-right direction of the base surface portion 19, a disposition notch 19c opened rearward is formed (see FIGS. 4 and 5).

The base surface portion 19 is provided with a rectangular light source holding portion 22 protruding downward. .. project from the four corners of the light source holder 22 downward.

The heat dissipating fins 21, 21,... Are provided side by side and are formed in a shape extending in the front-rear direction.

Screw holes 20a, 20a opened rearward are formed in the mounted wall portion 20 so as to be separated from each other in the left and right directions.

The holder 15 functions as an attachment, and has a holding surface portion 24 formed in a horizontally long frame shape and a terminal mounting portion 25 protruding upward from one end portion of the holding surface portion 24 in the left-right direction. The portion is located rearward of the holding surface portion 24. A space inside the holding surface portion 24 is formed as a light source placement hole 24a. Positioning holes 24b and 24b and screw insertion holes 24c and 24c are formed in the holding surface portion 24 so as to be laterally separated from each other across the light source arrangement hole 24a.

The connection terminal portions 26, 26 are spaced apart from each other in the light source disposition hole 24a of the holding surface portion 24, and the connection terminal portions 26, 26 pass through the inside of the holding surface portion 24, and the tip portions thereof are the light source disposition holes of the holding surface portion 24. The protrusions 24a project toward each other. The connection terminal portions 26, 26 are elastically deformable.

The terminal 27 is attached to the terminal mounting portion 25 in a state of being inserted from the rear, and the terminal 27 is electrically connected to the connection terminal portions 26 and 26 inside the holding surface portion 24 or the terminal mounting portion 25.

The light source module 16 has a light source 16a for emitting light and a substrate 16b on which the light source 16a is mounted, and the substrate 16b is provided with a pair of contact portions. For example, a light emitting diode is used as the light source 16a. The light source module 16 is arranged in the light source arrangement hole 24a, and the board 16b is pressed from below by the connection terminal portions 26, 26, respectively. The pair of contact portions on the substrate 16b are connected to the connection terminal portions 26, 26, respectively. Light is emitted downward from the light source 16a.

In the holder 15, positioning pins 19a, 19a are respectively inserted into the positioning holes 24b, 24b to be positioned on the heat sink 14, and the third mounting screws 300, 300 inserted through the screw insertion holes 24c, 24c from the lower side are screw holes, respectively. It is attached to the heat sink 14 by being screwed into 19b, 19b.

In the state where the holder 15 is attached to the heat sink 14, the terminal attachment portion 25 is inserted into the placement notch 19c, and the position of the light source module 16 is regulated from the outer peripheral side by the position regulation portions 23, 23,.... The light source module 16 is pressed against the light source holding portion 22 from below by the elasticity of the connection terminal portions 26, 26 and is brought into surface contact. Therefore, the heat generated when the light is emitted from the light source 16 a is easily transferred to the heat sink 14.

In the heat sink 14 to which the holder 15 is attached as described above, the fourth attachment screws 400 and 400 which are inserted from the lower side through the screw insertion holes 17b and 17b of the attachment base portion 17 are screwed into the screw holes 14a and 14a, respectively. By doing so, it is attached to the reflector 13.

When the heat sink 14 is attached to the reflector 13, a part of the heat sink 14 is located in the concave portion 17 a of the attachment base portion 17, and the rear end of the terminal 27 attached to the terminal attachment portion 25 is attached to the attachment base portion 17. It is located on the rear side. At this time, the light source 16 a of the light source module 16 held by the holder 15 is positioned directly above the reflecting portion 18 of the reflector 13. Therefore, the light emitted downward from the light source 16a is reflected by the reflection portion 18 and diffused, condensed, or collimated to travel forward.

In the lamp 1, since the lamp unit 12 is attached to the heat dissipation plate 11 and the heat dissipation plate 11 is attached to the lamp housing 2, by removing the heat dissipation plate 11 from the lamp housing 2, heat dissipation from the lamp units 12 and 12 is eliminated. The plate 11 is integrated and separated from the lamp housing 2.

Further, the outer peripheral portion of the heat dissipation plate 11 is provided as an attached portion 11a attached to the lamp housing 2 by screwing, and the lamp units 12, 12 are attached inside the attached portion 11a of the heat dissipation plate 11.

Therefore, when attaching/detaching the heat sink 11 to/from the lamp housing 2, a jig for attachment/detachment, for example, a screwdriver or the like does not interfere with the lamp units 12 and 12, so that workability in attaching and detaching the heat sink 11 to the lamp housing 2 is improved. Can be improved.

As described above, the light source module 16 is held by the holder 15, the holder 15 is attached to the heat sink 14, and the heat sink 14 is attached to the reflector 13, so that the lamp unit 12 is configured.

The lamp unit 12 has a radiator plate 11 in which the fifth mounting screws 500, 500 inserted from the rear side through the second screw insertion holes 11c, 11c of the radiator plate 11 are screwed into the screw holes 20a, 20a, respectively. Attached to. As described above, the heat dissipation plate 11 to which the lamp units 12, 12 are attached is a lamp by the second attachment screws 200, 200,... Are screwed into the attachment bosses 9, 9,. It is attached to the housing 2. When the heat sink 11 is attached to the lamp housing 2, the lamp units 12 and 12 are arranged in the first space 5a, and the control boards 10 and 10 are arranged in the second space 5b.

A cable (not shown) for supplying power or the like is inserted through the rear surface portion 6 of the lamp housing 2, and the cable is connected to the control boards 10 and 10. Further, the control boards 10 and 10 and the terminals 27 and 27 attached to the heat sinks 14 and 14 are connected by cords (not shown), and these cords are inserted through the cord insertion holes 11d and 11d of the heat sink 11, respectively, and the holder 15 is inserted. , 15 attached to terminals 27, 27.

The cover 3 has a connecting portion 3b connected to the connecting portion 8 of the lamp housing 2 by sixth mounting screws 600, 600,.... Therefore, the light emitted downward from the light source 16a of the light source module 16 and reflected by the reflecting portion 18 is transmitted through the cover 3 and is emitted to the outside.

In the lamp 1 configured as described above, heat generated in the light source modules 16 and 16 when light is emitted from the light sources 16a and 16a of the light source modules 16 and 16 is mainly transferred to the heat sinks 14 and 14. From the heat sinks 14, 14 are emitted to the outside through the lamp housing 2. Further, the heat generated in the control boards 10 and 10 when light is emitted from the light sources 16a and 16a is mainly transferred to the heat radiating portions 6a and 6a of the lamp housing 2 and radiated to the outside from the rear surface portion 6.

As described above, in the lamp 1, the radiator plate 11 which is arranged in the arrangement space 5 of the lamp outer casing 4 and divides the arrangement space 5 into the first space 5a and the second space 5b, and the first space. The lamp unit 12 is disposed in the lamp housing 2 and has a light source 16a, and the control board 10 that is disposed in the second space 5b and controls the light source 16a while being attached to the lamp housing 2. It is emitted through the heat dissipation plate 11.

Therefore, the light source 16a and the control board 10 which are both heating elements are arranged in the first space 5a and the second space 5b partitioned by the heat radiating plate 11, respectively, and the heat generated in the lamp unit 12 causes the heat radiating plate 11 to move. Since the heat is emitted through the heat source, the mutual influence of the heat generated in the light source 16a and the heat generated in the control board 10 on the light source 16a and the control board 10 is reduced, and the heat dissipation performance can be improved.

Further, since the lamp unit 12 is attached to the radiator plate 11 and the radiator plate 11 is attached to the lamp housing 2, the lamp unit 12 and the radiator plate 11 are integrated by removing the radiator plate 11 from the lamp housing 2. Separated from the lamp housing 2.

Therefore, the maintainability of the lamp unit 12 and the heat dissipation plate 11 can be improved.

Further, a plurality of lamp units 12 are provided, and the plurality of lamp units 12 are attached to the heat dissipation plate 11.

Therefore, since light is emitted from each of the light sources 16a of the plurality of lamp units 12, it is possible to arbitrarily set the number of lamp units 12 and the emission state of the light, and to improve the degree of freedom in design. It is possible to provide the lamp 1 with a large amount of light.

In the above, the lamp 1 having the two lamp units 12 and 12 is shown as an example, but the number of the lamp units 12 is arbitrary, and may be one or three or more. For example, the lamp 1 may be one in which four lamp units 12, 12,... Are arranged side by side vertically and horizontally (see FIG. 6 ).

Further, different types of the reflectors 13 provided in the lamp unit 12 may be separately attached to the heat dissipation plate 11. For example, various types such as a condensing type, a diffusing type, and a medium diffusing type are prepared as the reflector 13, and a reflector 13 of a suitable type is radiated according to the type of collision prevention light, aviation light, landing light, logo light, etc. The lamp 1 can be attached to the lamp 11 to configure the lamp 1.

As described above, since the lamp units 12 having the different types of reflectors 13 can be separately attached to the heat dissipation plate 11, the desired types of lamp units 12 can be attached to the heat dissipation plate 11 according to the function of the lamp 1. Therefore, it is possible to reduce the manufacturing cost by sharing the other parts with respect to the manufacturing of the plurality of types of lamps 1.

By providing the lamp 1 as a landing light or a running light of an aircraft, in the aircraft, the light source 16a, which is a heating element, and the control board 10 are separated by the heat radiating plate 11, respectively. The heat generated in the lamp unit 12 while being disposed in 5b is radiated through the heat dissipation plate 11.

Therefore, the light source 16a and the control board 10 which are both heating elements are arranged in the first space 5a and the second space 5b partitioned by the heat radiating plate 11, respectively, and the heat generated in the lamp unit 12 causes the heat radiating plate 11 to move. Since the heat is emitted via the air, the mutual influence of the heat generated in the light source 16a and the heat generated in the control board 10 on the light source 16a and the control board 10 is reduced, and the heat dissipation performance can be improved.

DESCRIPTION OF SYMBOLS 1... Lamp, 2... Lamp housing, 3... Cover, 4... Lamp outer casing, 5... Arrangement space, 5a... 1st space, 5b... 2nd space, 10... Control board, 11... Heat sink, 12... Lamp unit, 13... Reflector, 16a... Light source

Claims (6)

A lamp outer casing formed by a lamp housing having an opening and a cover attached to the lamp housing in a state where the opening is closed, and an inner space formed as an arrangement space,
A radiator plate which is arranged in the arrangement space and divides the arrangement space into a first space and a second space;
A lamp unit having a light source arranged in the first space;
A control board which is arranged in the second space in a state of being attached to the lamp housing, and which controls the light source,
A lamp in which heat generated in the lamp unit is radiated through the heat dissipation plate. The lamp unit is attached to the heat sink,
The lamp according to claim 1, wherein the heat dissipation plate is attached to the lamp housing. An outer peripheral portion of the heat dissipation plate is provided as an attached portion that is attached to the lamp housing by screwing,
The lamp according to claim 2, wherein the lamp unit is mounted inside the attached portion. A plurality of the lamp units are provided,
The lamp according to claim 2, wherein the plurality of lamp units are attached to the heat dissipation plate. The lamp unit is provided with a reflector that reflects the light emitted from the light source,
The lamp according to claim 2, 3 or 4, wherein the lamp units having different types of the reflectors are separately attached to the heat dissipation plate. The lamp according to claim 1, claim 2, claim 3, claim 4, or claim 5 provided as a landing light or a running light of an aircraft.

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