WO2018076466A1

WO2018076466A1 - Lampshade, lamp and aircraft

Info

Publication number: WO2018076466A1
Application number: PCT/CN2016/108976
Authority: WO
Inventors: 冯建刚; 黄淮
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2016-10-25
Filing date: 2016-12-08
Publication date: 2018-05-03
Also published as: CN109477624B; CN206130886U; CN109477624A

Abstract

A lampshade (41), a lamp (61) and an aircraft. The lampshade (41) comprises a lampshade body (10) and at least one light guide part (11) disposed on the lampshade body (10), wherein the light guide part (11) comprises at least one light incident surface (110) and at least one reflective surface (111); the light incident surface (110) is used for receiving incident light from a main axis direction of the lampshade body (10), and the reflective surface (111) is disposed on an incline opposite the light incident surface (110), wherein an inclination angle of the reflective surface (111) causes incident light passing through the incident surface (110) to be totally reflected on the reflective surface (111). By means of said method, the incident light from the main axis direction of the lampshade body (10) is totally reflected by using the reflective surface (111), thereby effectively changing a light transmission direction and achieving an expected optical effect. Further, an annular optical pattern alternating in light and dark is formed by means of arranging at least two light guide parts (11) at intervals around the main axis direction of the lampshade body (10).

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 technique

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

Summary of the invention

The technical problem to be solved by the present invention is to provide a lampshade, a lamp and an aircraft to effectively control the transmission direction of the light emitted by the light source by changing the design of the lamp cover, thereby achieving the desired optical effect.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a lamp cover including a lamp cover main body and at least one light guiding portion disposed on the lamp cover main body, wherein the light guiding portion includes at least one light incident surface and at least A reflecting surface for receiving light incident from the main axis of the lampshade main body, the reflecting surface being inclined with respect to the light incident surface, and the inclined angle of the reflecting surface is such that the light incident through the light incident surface is totally reflected on the reflecting surface.

The number of the light guiding portions is at least two, and the at least two light guiding portions are arranged at intervals around the main axis of the lampshade main body to form an annular optical pattern with alternating light and dark.

The at least two light guiding portions are arranged at equal intervals or at equal intervals.

The angle between the light incident surface and the main shaft of the lampshade main body is ±35°.

Wherein, the light incident surface is arranged in parallel with the main axis of the lampshade main body.

The light guiding portion is disposed inside the lampshade main body and integrally formed with the lampshade main body.

Wherein, the lamp cover body comprises a top portion, wherein the light guiding portion is connected to the top of the crucible so that the light reflected by the reflecting surface is scattered from the top of the crucible.

Wherein, the inclination angle of the reflecting surface and the curvature of the top of the crucible are set such that light incident on the light incident surface from a predetermined position of the main axis of the lamp cover main body becomes a parallel to the main axis of the lampshade main body by the reflecting surface and the top of the dome. Parallel rays of light in the direction.

The lampshade main body further includes an annular cylindrical portion, and the top of the dome is disposed at one end of the annular cylindrical portion, and the main axis direction of the cover body is the central axis direction of the annular cylindrical portion.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a lamp comprising a light source and the lamp cover disposed on a light emitting area of the light source.

Wherein, the light source is a single light source disposed in the direction of the main axis of the lamp cover.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide an aircraft comprising an aircraft body and at least one of the above-mentioned lamps disposed on the aircraft body.

The invention has the beneficial effects that: by providing at least one light guiding portion on the lamp cover main body, the light incident from the main axis of the lamp cover main body is received by the light incident surface of the light guiding portion, and is totally reflected by the reflecting surface, thereby effectively Change the direction of light transmission and achieve the desired optical effect.

Further, at least two light guiding portions are arranged at intervals around the main axis direction of the lampshade main body to form an annular optical pattern in which light and dark are alternated.

DRAWINGS

1 is a perspective view of an embodiment of a lampshade of the present invention;

2 is a top plan view of an embodiment of a lampshade of the present invention;

Figure 3 is a cross-sectional view showing the light transmission path inside the globe in the A-A direction of Figure 2;

Figure 4 is a perspective view of an embodiment of the lamp of the present invention;

Figure 5 is a side elevational view of an embodiment of the lamp of the present invention;

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

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. 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 obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a perspective view of an embodiment of a lampshade of the present invention, FIG. 2 is a top plan view of an embodiment of the lampshade of the present invention, and FIG. 3 is a view showing a light transmission path inside the lampshade. A schematic cross-sectional view of the AA direction in 2.

The lamp cover of this embodiment includes a lamp cover main body 10 and at least one light guiding portion 11 provided on the lamp cover main body 10.

Further, the light guiding portion 11 includes at least one light incident surface 110 and at least one reflective surface 111 for receiving light incident from the main axis direction of the globe body 10, and the reflecting surface 11 is inclined with respect to the light incident surface 110. The angle of inclination of the reflecting surface 111 causes the light incident through the light incident surface 110 to be totally reflected on the reflecting surface 111.

Since the refractive index of the light guiding portion 11 is different, the refractive index of the light guiding portion 11 is different. Therefore, the inclination angle of the reflecting surface 111 of the light guiding portion 11 and the incident surface 110 is determined according to the position of the light source, the emission angle, and the material used for the light guiding portion 11. The light emitted by the light source is incident on the light incident surface 110 through the light guide portion 11 and totally reflected on the reflective surface 111, thereby achieving the purpose of changing the light transmission direction. Specifically, the material of the light guiding portion 11 may be 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 it is only necessary to ensure that the incident angle of the light with the reflective surface 111 after the light incident surface 110 is refracted is greater than or equal to 39°, so that the light can be made Total reflection occurs on the reflecting surface 111.

In the above manner, by providing at least one light guiding portion on the shade body, the light incident from the main axis of the globe body is received by the light incident surface of the light guide portion, and is completely covered by the emission surface. Reflection, which in turn effectively changes the direction of light transmission and achieves the desired optical effect.

In the present embodiment, the light guiding portion 11 is provided inside the globe body 10 and integrally formed with the globe body 10. For example, the globe body 10 and the light guiding portion 11 are integrally molded by an injection molding process. The light guiding portion 11 may be a hollow or solid structure, and the light incident surface 110 and the reflective surface 111 may be rectangular or circular arc shapes, but are not limited thereto, and the number thereof is not limited to one described in the drawing, but may be Need to make any settings. Further, in order to simplify the process and design, in the present embodiment, the light incident surface 110 is disposed in parallel with the main axis of the globe body 10. In other embodiments, the light incident surface 110 may be disposed obliquely to the main axis of the globe body 10, such as an angle of ±35°. Further, the lamp cover further includes at least one card slot 12 for fixing the lamp cover to other devices (for example, a drone).

Further, the material of the lampshade main body 10 can transmit light, and the light transmission form comprises transparent material, semi-transparent material or transparent material, and the surface is atomized, so that when the light is emitted through the lampshade main body 10, a second ray effect can be generated. Allows the diffused light to spread out more evenly.

In a specific application, the desired optical effect can be achieved by providing the light guiding portion 11. For example, in FIG. 3, the light rays totally reflected by the reflecting surface 111 of the light guiding portion 11 are concentrated toward the main axis direction of the globe body 10, and the utilization of the light source can be improved. Further, the number of the light guiding portions 11 is at least two, and is arranged at equal intervals around the main axis direction of the globe main body 10. Thereby, the light rays entering the respective light guiding portions 11 are totally reflected by the reflecting surface 111, and then converge toward the main axis direction of the globe body 10, and enter the light transmission in the interval region between the adjacent light guiding portions 11. The direction does not change substantially. Therefore, a bright region is formed at a corresponding position of the light guiding portion 11, and a dark region is formed at a corresponding position of the interval region between the adjacent light guiding portions 11, thereby forming a ring-shaped optical pattern between light and dark.

It can be understood that the light guiding portions 11 can also be arranged at unequal intervals around the main axis direction of the lampshade main body 10, thereby exhibiting different displays.

Further, the shade body 10 includes a top portion 100 and an annular cylindrical portion 101. The top portion 100 is provided at one end of the annular cylindrical portion 101, and the main axis direction of the globe main body 10 is the central axis direction of the annular cylindrical portion 101. In the present embodiment, the light guiding portion 11 is connected to the top portion 100 such that the light reflected by the reflecting surface 111 is dissipated from the top 101 of the crucible; The viewer can observe the corresponding optical pattern from the side of the top 101 of the crucible.

Further, the inclination angle of the reflection surface 111 and the curvature of the dome top 100 are set such that light incident on the light incident surface 100 from a predetermined position of the main axis of the globe main body 10 at a predetermined angle range is changed by the reflection surface 111 and the top portion 100. It is a parallel ray parallel to the main axis of the lampshade main body 10.

In the above manner, the uniformity of the light emitted from the lamp cover can be improved, and the optical pattern formed by the light guiding portion 11 (for example, the ring-shaped optical pattern between the light and dark mentioned above) can be observed at a relatively long distance. In turn, it has a good indication and recognition effect.

In the above illustration, the size, shape, and relative positional relationship of the light guiding portion 11 are merely illustrative, and the actual application can be changed as needed. For example, in other embodiments, the lampshade may be formed by integrally projecting the light guiding portion 11 and then assembling and fixing the respective light guiding portions 11 to the globe body 10.

4 and FIG. 5, FIG. 4 is a perspective view of an embodiment of the lamp of the present invention, and FIG. 5 is a side view of an embodiment of the lamp of the present invention.

The luminaire of this embodiment includes a light source 40 and a lamp cover 41 that is disposed on a light-emitting area of the light source 40. The structure and function of the lampshade 41 are the same as those of the lampshade embodiment, and will not be described herein.

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

In the above illustration, the size, shape, and relative positional relationship of the light source 40 are merely illustrative, and the actual application can be changed as needed.

Please refer to FIG. 6. FIG. 6 is a perspective view of an embodiment of the aircraft of the present invention. The aircraft of the present embodiment includes an aircraft body 60 and at least one luminaire 61 disposed on the aircraft body 60. The luminaire 61 is consistent with the structure and function of the luminaire of the above embodiment, and details are not described herein again. The aircraft can be a drone, but is not limited to this.

In the above illustration, the number, size, shape, and relative positional relationship of the lamps 61 are merely illustrative, and the actual application can be changed as needed.

On the basis of the above, the above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structure or equivalent process made by the contents of the present invention and the drawings is used. Transformations, examples are based on the mutual combination of the technical features between the embodiments, or directly or indirectly applied to other related technical fields, and are included in the scope of patent protection of the present invention.

Claims

A lampshade includes a lamp cover body and at least one light guiding portion disposed on the lampshade body, wherein the light guiding portion includes at least one light incident surface and at least one reflective surface, and the light incident surface is used for the light incident surface Receiving light rays incident from a main axis direction of the lampshade main body, the reflecting surface being inclined with respect to the light incident surface, the reflecting surface being inclined at an angle such that light incident through the light incident surface occurs on the reflecting surface Total reflection.
The lampshade according to claim 1, wherein the number of the light guiding portions is at least two, and the at least two light guiding portions are arranged at intervals around a main axis of the lampshade main body to form an alternating ring of light and dark. Optical pattern.
The lampshade according to claim 2, wherein the at least two light guiding portions are equally spaced or arranged at equal intervals.
The lampshade according to claim 1, wherein an angle between the light incident surface and the main body of the lampshade main body is ±35°.
The lampshade according to claim 4, wherein the light incident surface is disposed in parallel with a major axis of the globe body.
The lampshade according to claim 1, wherein the light guiding portion is provided inside the lampshade main body and integrally formed with the lampshade main body.
A lampshade according to claim 1, wherein said lampshade body comprises a dome portion, wherein said light guiding portion is coupled to said dome portion such that light reflected by said reflecting surface is scattered from said top of said dome Out.
The lampshade according to claim 7, wherein an inclination angle of said reflecting surface and a curvature of said top portion are set such that a predetermined angular range is incident from said predetermined position of said main axis of said lampshade main body to said incident light The surface light passes through the reflecting surface and the top of the crucible to become parallel rays parallel to the major axis of the globe body.
The lampshade according to claim 7, wherein the lampshade main body further comprises an annular cylindrical portion, and the top of the dome is disposed at one end of the annular cylindrical portion, and the main axis direction of the lampshade main body is The direction of the central axis of the annular cylindrical portion.
A light fixture, characterized in that the light fixture comprises a light source and is disposed on the light A lampshade as claimed in any one of claims 1 to 8 on a light-emitting line region of the source.
The luminaire according to claim 10, wherein said light source is a single light source disposed in a direction of a major axis of said lamp cover.
An aircraft characterized in that the aircraft comprises an aircraft body and at least one luminaire as claimed in claim 10 disposed on the aircraft body.