CN109477624B

CN109477624B - Lampshade, lamp and aircraft

Info

Publication number: CN109477624B
Application number: CN201680087874.2A
Authority: CN
Inventors: 冯建刚; 黄淮
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2016-10-25
Filing date: 2016-12-08
Publication date: 2021-07-13
Anticipated expiration: 2036-12-08
Also published as: CN206130886U; WO2018076466A1; CN109477624A

Abstract

The invention discloses a lampshade (41), a lamp (61) and an aircraft. The lampshade (41) comprises a lampshade main body (10) and at least one light guide part (11) arranged on the lampshade main body (10), wherein the light guide part (11) comprises at least one light incident surface (110) and at least one reflection surface (111), the light incident surface (110) is used for receiving light rays incident from the main shaft direction of the lampshade main body (10), the reflection surface (111) is obliquely arranged relative to the light incident surface (110), and the inclination angle of the reflection surface (111) enables the light rays incident through the light incident surface (110) to be totally reflected on the reflection surface (111). In such a way, the light rays incident from the main shaft direction of the lamp cover main body (10) are totally reflected by the reflecting surface (111), so that the light ray transmission direction is effectively changed, and the expected optical effect is achieved. Further, at least two light guide portions (11) are arranged at intervals around the main axis direction of the cover body (10) to form an annular optical pattern with alternating light and shade.

Description

Lampshade, lamp and aircraft

Technical Field

The invention relates to the field of illumination, in particular to a lampshade, a lamp and an aircraft.

Background

In the LED lamp or other lamps in the prior art, a lampshade is generally covered outside the light source to protect the light source. The lampshade is usually made of transparent material, so that the light emitted by the light source is projected through the lampshade. Further, in order to achieve a desired optical effect, for example, to limit the light emitting direction of the light source within a predetermined range or to obtain a desired optical pattern, it is often necessary to add a lens, a light shield, or a reflector inside the lamp cover to change the transmission direction of the light emitted from the light source. However, this design requires additional components, increases the cost of the lamp, and may also result in a reduced utilization of the light source.

Disclosure of Invention

The invention mainly solves the technical problem of providing a lampshade, a lamp and an aircraft, so that the transmission direction of light rays emitted by a light source is effectively controlled by changing the design of the lampshade, and the expected optical effect is further achieved.

In order to solve the technical problems, the invention adopts a technical scheme that: the lampshade comprises a lampshade main body and at least one light guide part arranged on the lampshade main body, wherein the light guide part comprises at least one light incident surface and at least one reflecting surface, the light incident surface is used for receiving light rays incident from the main shaft direction of the lampshade main body, the reflecting surface is obliquely arranged relative to the light incident surface, and the inclination angle of the reflecting surface enables the light rays incident through the light incident surface to be totally reflected at the reflecting surface.

The number of the light guide parts is at least two, and the at least two light guide parts are arranged at intervals around the main shaft direction of the lampshade main body so as to form an annular optical pattern with alternating light and shade.

Wherein, the at least two light guide parts are arranged at equal intervals or at unequal intervals.

Wherein, the included angle between the light incident surface and the main shaft of the lampshade main body is +/-35 degrees.

The light incident surface is parallel to the main shaft of the lampshade main body.

The light guide part is arranged inside the lampshade main body and is integrally formed with the lampshade main body.

Wherein the cover body includes a dome portion, wherein the light guide portion is connected to the dome portion so that the light reflected by the reflection surface is emitted from the dome portion.

The inclination angle of the reflecting surface and the curvature of the dome part are set to enable light rays incident to the light incident surface in a preset angle range from a preset position of the main shaft of the lampshade main body to be parallel to the main shaft direction of the lampshade main body after being acted by the reflecting surface and the dome part.

The lampshade main body further comprises an annular cylindrical part, the dome part is arranged at one end of the annular cylindrical part, and the main shaft direction of the lampshade main body is the central axis direction of the annular cylindrical part.

In order to solve the technical problem, the invention adopts another technical scheme that: the lamp comprises a light source and the lampshade which covers the light emitting area of the light source.

The light source is a single light source arranged in the direction of the main shaft of the lampshade.

In order to solve the technical problems, the invention adopts another technical scheme that: an aircraft is provided, which comprises an aircraft body and at least one lamp arranged on the aircraft body.

The invention has the beneficial effects that: the lampshade main body is provided with at least one light guide part, the light incident surface of the light guide part is used for receiving light rays incident from the main shaft direction of the lampshade main body, and the light rays are totally reflected by the reflection surface, so that the light ray transmission direction is effectively changed, and the expected optical effect is achieved.

Further, at least two light guide parts are arranged at intervals around the main shaft direction of the lampshade main body, so that an annular optical pattern with alternating light and shade is formed.

Drawings

FIG. 1 is a perspective view of one embodiment of a lampshade of the present invention;

FIG. 2 is a schematic top view of one embodiment of a lamp enclosure of the present invention;

fig. 3 is a schematic sectional view taken along a-a direction in fig. 2 for illustrating a light transmission path inside the lamp housing;

FIG. 4 is a schematic perspective view of a lamp according to an embodiment of the present invention;

FIG. 5 is a schematic side view of a lamp according to an embodiment of the invention;

figure 6 is a schematic perspective view of an embodiment of the aircraft of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of a lamp housing according to an embodiment of the present invention, fig. 2 is a schematic top view of the lamp housing according to the embodiment of the present invention, and fig. 3 is a schematic cross-sectional view along a direction a-a in fig. 2 for illustrating a light transmission path inside the lamp housing.

The lampshade of the embodiment comprises a lampshade main body 10 and at least one light guide part 11 arranged on the lampshade main body 10.

Further, the light guide portion 11 includes at least one light incident surface 110 and at least one reflection surface 111, the light incident surface 110 is used for receiving the light rays incident from the main axis direction of the lamp housing body 10, the reflection surface 11 is disposed obliquely relative to the light incident surface 110, and the inclination angle of the reflection surface 111 makes the light rays incident through the light incident surface 110 totally reflect on the reflection surface 111.

Because the light guide portion 11 is made of different materials and has different refractive indexes, the inclination angle between the reflection plane 111 and the incident plane 110 of the light guide portion 11 needs to be determined according to the position and the emission angle of the light source and the material used by the light guide portion 11, so that the light projected by the light source is totally reflected on the reflection plane 111 after being incident on the incident plane 110 of the light guide portion 11, and the purpose of changing the light transmission direction is achieved. Specifically, the light guide portion 11 may be made of PC (Polycarbonate) or PMMA (Polymethyl Methacrylate), but is not limited thereto.

For example, when a PC material is used, the total reflection angle of the PC material is about 39 °, so that the total reflection of the light on the reflecting surface 111 can be achieved only by ensuring that the incident angle of the light with the reflecting surface 111 after the light is refracted at the light incident surface 110 is greater than or equal to 39 °.

Through the mode, the lampshade main body is provided with the at least one light guide part, the light incident surface of the light guide part is used for receiving the light incident from the main shaft direction of the lampshade main body, and the light is totally reflected by the emitting surface, so that the light transmission direction is effectively changed, and the expected optical effect is achieved.

In the present embodiment, the light guide portion 11 is provided inside the cover main body 10 and is integrally formed with the cover main body 10. For example, the cover main body 10 and the light guide portion 11 are integrally formed by injection molding. The light guide part 11 may have a hollow or solid structure, and the light incident surface 110 and the reflection surface 111 may have a rectangular shape or a circular arc shape, but is not limited thereto, and the number thereof is not limited to one as illustrated in the drawings, and may be arbitrarily set as needed. Further, in order to simplify the manufacturing process and design, in the present embodiment, the light incident surface 110 is disposed parallel to the main axis of the lampshade main body 10. In other embodiments, the light incident surface 110 may be inclined from the main axis of the lampshade body 10, for example, at an angle of ± 35 °. Further, the lampshade further comprises at least one clamping groove 12, and the clamping groove 12 is used for fixing the lampshade on other devices (such as an unmanned aerial vehicle).

Further, the material of the lampshade main body 10 can transmit light, and the light transmission form of the lampshade main body comprises transparent material, semitransparent material or transparent material and surface atomization treatment, so that when the light is emitted out through the lampshade main body 10, a secondary optical function can be generated, and the diffused light can be diffused out more uniformly.

In a specific application, a desired optical effect can be achieved by providing the light guide 11. For example, in fig. 3, the light totally reflected by the reflecting surface 111 of the light guide unit 11 is converged in the main axis direction of the globe body 10, and the utilization rate of the light source can be improved. Further, the number of the light guide portions 11 is at least two, and the light guide portions are arranged at equal intervals around the main axis direction of the cover main body 10. Therefore, the light entering each light guide portion 11 is totally reflected by the reflection surface 111 and then converged in the main axis direction of the lampshade main body 10, and the transmission direction of the light entering the spacing region between the adjacent light guide portions 11 is not substantially changed. Therefore, a bright area is formed at a position corresponding to the light guide portion 11, and a dark area is formed at a position corresponding to the space area between the adjacent light guide portions 11, thereby forming an annular optical pattern with alternating bright and dark colors.

It is understood that the light guide portions 11 may be arranged at unequal intervals around the main axis direction of the cover main body 10, thereby displaying different displays.

Further, the cover body 10 includes a dome portion 100 and an annular cylindrical portion 101. The dome portion 100 is disposed at one end of the annular cylindrical portion 101, and the main axis direction of the globe body 10 is the central axis direction of the annular cylindrical portion 101. In the present embodiment, the light guide portion 11 is connected to the dome portion 100 so that the light reflected by the reflection surface 111 is emitted from the dome portion 101; thereby allowing the observer to observe the corresponding optical pattern from the dome portion 101 side.

Further, the inclination angle of the reflection surface 111 and the curvature of the dome portion 100 are set such that a ray incident on the light incident surface 100 at a predetermined angle range from a predetermined position of the principal axis of the cover body 10 becomes a parallel ray parallel to the principal axis direction of the cover body 10 by the reflection surface 111 and the dome portion 100.

By the above manner, uniformity of light emitted from the lamp cover can be improved, and an optical pattern (for example, the above mentioned annular optical pattern with alternate light and dark) formed by the light guide part 11 can be observed at a relatively long distance, thereby achieving good indication and identification effects.

In the above illustration, the size, shape, and relative positional relationship of the light guide portion 11 are merely illustrative, and may be changed as necessary in practical application. For example, in another embodiment, the globe may be formed by integrally injection-molding the light guide portions 11, and then assembling and fixing the light guide portions 11 to the globe main body 10.

Referring to fig. 4 and 5, fig. 4 is a schematic perspective view of a lamp according to an embodiment of the invention, and fig. 5 is a schematic side view of the lamp according to the embodiment of the invention.

The lamp of the present embodiment includes a light source 40 and a lamp cover 41 covering a light emitting region of the light source 40. The structure and function of the lamp shade 41 are the same as those of the lamp shade in the above-mentioned embodiment, and are not described herein again.

In the present embodiment, the light source 40 is a single light source disposed in the main axis direction of the lamp housing 41, such as an LED single light source, but is not limited thereto.

In the above illustration, the size, shape and relative position of the light source 40 are merely schematic, and the actual application may be changed as needed.

Referring to fig. 6, fig. 6 is a schematic perspective view of an aircraft according to an embodiment of the invention. The aircraft of the embodiment comprises an aircraft body 60 and at least one lamp 61 arranged on the aircraft body 60. The lamp 61 has the same structure and function as the lamp of the above embodiment, and is not described herein again. The aircraft may be a drone, but is not limited thereto.

In the above illustration, the number, size, shape and relative position relationship of the lamps 61 are only schematic, and the practical application can be changed as required.

On the basis of the above, the above mentioned embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all the modifications of equivalent structures and equivalent processes made by the contents of the present specification and the drawings are included in the scope of the present invention according to the combination of the technical features of the embodiments, or directly or indirectly applied to other related technical fields.

Claims

1. The utility model provides a lampshade, its characterized in that, includes the lampshade main part and set up in at least one light guide part in the lampshade main part, wherein light guide part includes at least one income plain noodles and at least one plane of reflection, the income plain noodles is used for receiving the light of following the main shaft direction incidence of lampshade main part, the plane of reflection is relative the income plain noodles slope sets up, the inclination of plane of reflection makes the warp the light of income plain noodles incidence is in the plane of reflection takes place the total reflection, wherein, compare in the income plain noodles, the plane of reflection keeps away from the main shaft of lampshade main part.

2. The lampshade of claim 1, wherein the number of the light guide parts is at least two, and the at least two light guide parts are arranged at intervals around the main axis direction of the lampshade main body so as to form an annular optical pattern with alternating light and shade.

3. The lamp cover according to claim 2, wherein the at least two light guide portions are arranged at equal intervals or at unequal intervals.

4. The lampshade of claim 1, wherein an included angle between the light incident surface and a main axis of the lampshade body is +/-35 degrees.

5. The lampshade of claim 1, wherein the light incident surface is arranged parallel to a main axis of the lampshade body.

6. The mask of claim 1, wherein the light guide portion is disposed inside the mask body and is integrally formed with the mask body.

7. The bezel of claim 1, wherein the bezel body comprises a dome portion, wherein the light directing portion is connected to the dome portion such that light reflected by the reflective surface is emitted from the dome portion.

8. The cover according to claim 7, wherein the inclination angle of the reflection surface and the curvature of the dome portion are set such that a light ray incident on the light incident surface at a predetermined angle range from a predetermined position of the principal axis of the cover body becomes a parallel light ray parallel to the principal axis direction of the cover body by the reflection surface and the dome portion.

9. The mask according to claim 7, wherein the mask body further comprises an annular cylindrical portion, the dome portion is disposed at one end of the annular cylindrical portion, and a major axis direction of the mask body is a central axis direction of the annular cylindrical portion.

10. A luminaire comprising a light source and a globe according to any of claims 1-8 covering a light emitting line area of the light source.

11. The lamp of claim 10, wherein the light source is a single light source disposed in a direction of a major axis of the lamp housing.

12. An aircraft, characterized in that the aircraft comprises an aircraft body and at least one light fitting according to claim 10 arranged on the aircraft body.