WO2017041630A1

WO2017041630A1 - Led signal lamp

Info

Publication number: WO2017041630A1
Application number: PCT/CN2016/096648
Authority: WO
Inventors: 陈必寿; 关彦青; 杜金; 程爱群
Original assignee: 上海三思电子工程有限公司; 三思光电科技（上海）有限公司; 上海三思科技发展有限公司; 嘉善三思光电技术有限公司
Priority date: 2015-09-11
Filing date: 2016-08-25
Publication date: 2017-03-16
Also published as: CN106523980B; CN106523980A

Abstract

An LED signal lamp (1) comprises: a top cover (11), a base (13), and a lamp body (12) disposed therebetween. The lamp body (12) comprises: a light transmissive housing (121) disposed at an outermost layer and having a smooth surface. The lamp body can also comprise at least one LED light source (2232) in the light transmissive housing (121) and a light distribution assembly for distributing lights for the LED light sources (2232). The light distribution assembly can comprise: a collimating lens (2233). The signal lamp can combine with various light distribution designs to meet the requirements of signal lamps and is energy-saving, eco-friendly and low-cost.

Description

LED signal light

Technical field

This patent application relates to the field of LED lighting technology, and in particular to an LED signal lamp.

Background technique

Existing signal lights, such as ship signal lights, generally use an optical structure consisting of a halogen light source, a ring-shaped threaded glass (Fresnel lens), a light barrier, and the like. Such navigation signals have the following problems: 1. Halogen light source----low luminous efficiency (the whole lamp can meet the national standard above 60W), poor seismic capacity and large volume; 2. Ring-shaped threaded glass----easy accumulation Water and ash, the light effect is rapidly reduced, there are serious safety hazards; 3, the light barrier -----, different navigation lights need different light barriers, increasing the cost of the whole lamp; b, due to the light barrier The light blocking effect, the light effect of the whole lamp is low; c, the excess energy is radiated in the form of heat, which brings great difficulty to heat dissipation.

Therefore, it is necessary to provide a new type of signal light to solve the above problems.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the purpose of this patent application is to provide an LED signal lamp, and to provide various light distribution schemes to solve the problems existing in the prior art signal lamps.

In order to achieve the above object and other related objectives, the present patent application provides an LED signal lamp, comprising: a top cover, a base and a lamp body disposed therebetween; the lamp body comprises: a smooth surface provided on the outermost layer a light cover, the lamp body further comprising at least one LED light source located in the light transmissive cover, and a light distribution component for distributing light to the LED light source, the light distribution component comprising: at least one collimating lens.

Optionally, the collimating lens comprises: a light incident surface covering the LED light source, a light emitting surface having at least a portion disposed to emit light toward the light transmissive cover, and a reflection reflecting the received light toward the light emitting surface. a surface of the LED light source that is refracted by the illuminating surface and the illuminating surface is enlarged along a path that propagates toward the transmissive cover, and the light emitted by the LED light source passes through the illuminating surface The angle of refraction of the refraction and reflection surface is reduced or unchanged along the path propagating toward the exit surface.

Optionally, the collimating lens comprises: a lens body, which is a solid structure, comprising: a convex arc-shaped light-emitting surface, a mounting surface opposite to the light-emitting surface, and a surface connected to the light-emitting surface and the mounting surface At least two opposite end faces; a first recessed portion disposed on the LED light source, recessed from the mounting surface of the lens body, the inner surface of which forms a light incident surface corresponding to the light exiting surface; The light surface includes a pair of side faces disposed opposite to opposite end faces of the lens body and a connection face connecting the pair of side faces; a pair of second recesses formed by recessing from both end faces of the lens body, each The second concave The portion forms a reflecting surface toward the surface of the LED light source.

Optionally, the light distribution component comprises: the collimating lens, and the fixed cover is disposed outside the LED light source.

Optionally, the LED signal lamp further includes: a light source mounting member disposed in the transparent cover, the light source mounting member having at least one bearing surface for setting the LED light source.

Optionally, the bearing surface is disposed at a middle portion of the lamp body toward the transparent cover.

Optionally, the light-emitting surface is provided with a light intercepting portion, and the light intercepting portion is located on at least one side of the LED light source for refracting light from the LED light source to the side.

Optionally, the light intercepting portion is formed by arranging a plurality of prisms having a triangular cross section.

Optionally, the light source mounting member is cylindrical and has a polygonal cross section, and each side corresponds to one bearing surface.

Optionally, the LED signal lamp further includes: a lens cover covering the lens and fixedly coupled with the light source mounting member, the lens cover having a hole portion exposing the lens.

Optionally, at least two opposite sides of the bearing surface are respectively provided with a first engaging portion, and the lens cover is provided with a second engaging portion that is engaged with the first engaging portion to realize Fixed.

Optionally, the collimating lens is outwardly extended to form a convex portion, and the convex portion is provided with a perforation for fixing purposes; or the collimating lens is provided with a positioning portion, the positioning portion and the collimating lens The location to be installed corresponds to the combination.

Optionally, the lamp body has at least one bearing surface for setting an LED light source, and the bearing surface faces the top cover or the base, and is disposed at at least one of the following parts: the middle of the lamp body The lamp body corresponds to one end of the top cover and one end of the lamp body corresponding to the base.

Optionally, the collimating lens has a light incident surface covering the LED light source, a light emitting surface having at least a portion disposed to emit light toward the light transmissive cover, and a reflection reflecting the received light toward the light emitting surface. The light emitted by the LED light source passes through the refraction of the light incident surface, the reflection of the reflective surface, and the refraction of the light exit surface, so that the LED light source emits light to the top cover or the base at least partially to be emitted toward the light transmissive cover.

Optionally, the collimating lens comprises: a lens body, which is a solid structure, comprising: a mounting surface, a top end surface opposite to the mounting surface, and a light emitting surface connecting the mounting surface and the top surface; the cover is disposed on the LED light source The first concave portion is recessed from the mounting surface of the lens body, and the inner surface thereof constitutes a light incident surface corresponding to the light exit surface; and the light incident surface opposite to the front end surface has a tip end portion facing the top end surface The tapered surface has an arc that is recessed toward the light source; the second recess is recessed from the top end surface of the lens body, and the second recess forms a reflecting surface toward the surface of the LED light source.

In summary, the present patent application provides an LED signal lamp, comprising: a top cover, a base, and a lamp body disposed therebetween; the lamp body includes: a translucent cover having a smooth surface disposed on the outermost layer, The lamp body further includes at least one LED light source located in the transparent cover, and a light distribution component for distributing light to the LED light source, the light distribution component comprising: at least one collimation The LED signal lamp provided by the invention can meet the requirements of the signal lamp with a plurality of light distribution designs, and is energy-saving and environmentally friendly, and has low cost.

DRAWINGS

FIG. 1 is a schematic structural view of an LED signal lamp in an embodiment of the present patent application.

2 is a longitudinal cross-sectional view showing an LED signal lamp in an embodiment of the present patent application.

3 is an exploded perspective view showing a part of components of an LED signal lamp in an embodiment of the present patent application.

FIG. 4 is a schematic view showing the outer structure of a light distribution assembly according to an embodiment of the present application.

FIG. 5 is a schematic view showing the internal perspective of the light distribution assembly of FIG. 4.

Fig. 6 is a schematic cross-sectional view taken along the line A-A of Fig. 4.

Fig. 7 is a schematic cross-sectional view taken along the line B-B of Fig. 4.

Figure 8 shows a schematic view of the optical path shown at the angle of Figure 6.

Figure 9 shows a schematic view of the optical path shown at the angle of Figure 7.

Figure 10 is a graph showing the light distribution of the light distribution assembly of Figure 4.

Figure 11 is a schematic view showing the optical path of a light intercepting portion applied to a lens in an embodiment of the present patent application.

FIG. 12a is a schematic structural view showing an LED lighting unit combination for realizing LED signal design in an embodiment of the present patent application.

Figure 12b is a light distribution graph of the embodiment of Figure 12a.

FIG. 13a is a schematic structural view showing still another LED lighting unit combination for realizing LED signal design in an embodiment of the present patent application.

Figure 13b is a light distribution graph of the embodiment of Figure 13a.

FIG. 14a is a schematic structural view showing still another LED lighting unit combination for realizing LED signal design in an embodiment of the present patent application.

Figure 14b is a light distribution graph of the embodiment of Figure 14a.

Figure 15 is a block diagram showing the structure of a light distribution assembly in another embodiment of the present application.

16 to 18 are schematic views showing various optical paths under the action of the light distribution assembly of Fig. 15.

19 through 21 are schematic views showing the structure of a plurality of embodiments using the light distribution assembly of Fig. 15.

detailed description

The core idea of the present invention is that since the use of the light distribution component includes the collimating lens, the thread structure of the Fresnel lens can be avoided on the translucent cover, so that the surface of the translucent cover is smooth, thereby avoiding the dust or corrosion. Light loss Lost or potentially dangerous. In addition, the structure of the collimating lens can be more flexible and can adapt to the light distribution requirements of more types of lamps.

The embodiments of the present patent application are described below by specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present patent application by the contents disclosed in the present specification. The present invention may be implemented or applied in various different embodiments. The details of the present invention can also be modified or changed without departing from the spirit and scope of the invention. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

As shown in FIG. 1 , the LED signal lamp 1 provided by the present invention comprises a top cover 11 , a base 13 and a lamp body 12 disposed therebetween.

The lamp body 12 includes a translucent cover 121 having a smooth surface provided on the outermost layer. In an embodiment, the transparent cover 121 may be, for example, a cylindrical shape, and the transparent cover 121 may be a transparent material such as glass or PC, which enables the light to be transmitted with an efficiency of 94% or more, and The surface is smooth without the problem of light decay caused by stagnant water and ash. It should be noted that the outermost layer here refers to the position of the LED light distribution light path in the optical device, and does not mean that the transparent cover needs to be at the outermost layer of the signal light, and the outer side of the transparent cover may also have non-optical devices. Such as baffles, fixtures, decorations, and the like.

The lamp body may further include at least one LED light source located in the transparent cover 121 and a light distribution component for distributing light to the LED light source, the LED light source being, for example, an LED chip loaded on the substrate; The light distribution component is used to convert the LED half-space Lambertian illumination into a type of illumination that conforms to the illumination standard of the signal lamp by reflection and/or refraction. For example, the light distribution component may include: a collimating lens.

In the following, the LED signal lamp uses different configurations of the light distribution component and the LED light source to provide a plurality of embodiments, wherein the first embodiment and the second embodiment adopt a lens as a light distribution component; the embodiments are not contradictory. Features can be combined with each other:

Embodiment 1:

As shown in FIG. 2 and FIG. 3, the lamp body 22 of the LED signal lamp 2 includes a cylindrical light source mounting member 222 disposed in the light transmissive cover 221, and the light source mounting member 222 has at least one for setting LEDs. The bearing surface 2221 of the light source, in particular, the bearing surface 2221 is disposed at a central portion of the lamp body 22 toward the transparent cover 221, and in the embodiment, the bearing surface 2221 is disposed in a lateral direction as illustrated, thereby Facing the side wall of the transparent cover 221 on the peripheral side thereof, the light emitted from the LED light source carried by the LED light source can more easily emit light from the transparent cover 221 .

Specifically, at least one of the bearing surfaces 2221 is provided with an LED lighting unit 223, and the LED lighting unit 223 includes an LED substrate 2231 (which may be an aluminum substrate) provided with an LED light source 2232 (such as a light source chip). In this embodiment, the LED lighting unit 223 further includes: at least one collimating lens 2233, and the fixing cover is disposed on the LED light source 2232 outer.

Referring to FIG. 2, preferably, the central portion of the light source mounting member 222 penetrates to form a penetrating portion for driving the LED driving power source 24. Preferably, the penetrating portion and the LED driving power source 24 are shape-matched or worn. The inner wall of the permeable portion is provided with a member (not shown) for positioning the LED driving power source 24, thereby locating the LED driving power source 24 penetrating the penetrating portion in the lateral direction of the drawing; and as shown in FIG. 3 or FIG. 12a, The cross section of the penetrating portion is a polygon, and the so-called polygon has a shape of three or more sides, and each side corresponds to one carrying surface 2221, and the number of sides of the polygon is set according to the light distribution requirement of the specific illumination angle of the lamp, in this embodiment. The cross-section is triangular, that is, has three bearing surfaces. Of course, in other embodiments, not limited thereto, any number of multi-faceted cylinders composed of bearing surfaces may be selected, preferably, for convenient light distribution design. The symmetrical polygons, for example, may be regular polygons, diamonds, etc., which are preferably equilateral triangles in this embodiment. Since the LED light source 2232 is disposed on the lateral bearing surface 2221 of the light source mounting member 222, it may be arranged in a regular polygon. The light in all directions is uniform; and, as shown in FIG. 2, the top cover 21 and the base 23 may be provided with a shape corresponding to the cross-sectional shape of the light source mounting member 222 (which may also include the LED driving power source 24). The recess, such as the combination of the recess, can position the light source mounting member 222 between the top cover 21 and the base 23. Similarly, the top cover 21 and the base 23 can also be shaped to fit the cross section of the transparent cover 221 The recessed portion 221, for example, the translucent cover 221 is cylindrical, and the top cover 21 and the base 23 are provided with corresponding annular recesses to join the side walls of the translucent cover 221.

As shown in FIG. 3, the LED signal lamp 2 further includes a lens cover 224 that is covered by the collimating lens 2233 and fixedly coupled with the light source mounting member 222. The lens cover 224 has an exposed cover. The hole portion of the collimating lens 2233 (for example, a square hole as shown); for example, referring to FIG. 12a, at least opposite sides of the bearing surface 2221 are respectively provided with a first engaging portion 22211, and the lens cover is respectively provided. The second engaging portion 2241 is engaged with the first engaging portion 22211 to achieve the fixing. The first engaging portion 22211 and the second engaging portion 2241 may be opposite in bending direction. The first engaging portion 22211 is a pair of structures formed by projecting upward from the bearing surface 2221 and bending in the opposite direction (outward in the drawing), and the first engaging portion 22211 is formed by bending. The second engaging portion 2241 is a flange that is bent in the same direction on both sides of the lens cover 224 but opposite to the bending direction of the first engaging portion 22211, so that the lens cover 224 passes the card. The joint can be fixed to the bearing surface 2221.

In an embodiment, it can be seen from the figure that, preferably, the lens cover 224 has an arch shape in cross section so as to neither obstruct the main light-emitting area of the lens 2233 nor limit the stray light of the edge of the lens 2233 to the main light-emitting area. Impact.

As shown in FIG. 4 and FIG. 5 , the structure of the collimating lens 2233 used is described below. The collimating lens 2233 includes: a light incident surface covering the LED light source, and at least having a light shielding cover disposed to face the light transmissive cover a light-emitting surface of the light-emitting portion and a reflection surface that reflects the received light toward the light-emitting surface; the light emitted from the LED light source passes through the refracted exit angle of the light-incident surface and the light-emitting surface to propagate along the light-transmitting cover Expanding on the path, the light emitted by the LED light source passes through the input The refraction of the smooth surface and the reflected angle of the reflected surface are reduced or unchanged along the path propagating toward the exit surface. In this way, through the cooperation of the faces of the lens, the illumination curve of the LED light source is adjusted to conform to the illumination curve of the signal lamp standard, and the curvature, the curvature, and the refractive index of the material are adjusted according to the law of refraction and the law of reflection. The specific shape can change accordingly. The specific shape of the lens in this embodiment is as follows: a lens body and a first recess 22335 and a second recess 22332 provided in the lens body.

The lens body is a body surrounded by a convex arc-shaped light-emitting surface 22331, a mounting surface 22330 opposite to the light-emitting surface, and two opposite end faces that are in contact with the light-emitting surface 22331 and the mounting surface 22330. structure. In an embodiment, as shown, the lens body may be, for example, a longitudinally-cut partial cylinder or an elliptical cylinder (eg, a semi-cylindrical or semi-elliptical cylinder), and the light-emitting surface 22331 may be arched. The curved surface is made of a convex curved surface for the diffusion of LED light. Referring to FIG. 7 and FIG. 9, FIG. 7 is a cross-sectional view of FIG. 4 in the BB direction, and FIG. 9 is exemplarily shown in FIG. The light-emitting path under the action of the light surface 22331 is described. The mounting surface 22330 is the opposite surface of the light-emitting surface, and is illustrated as a bottom surface. The lens body is mounted toward the LED light source 2232 by the mounting surface 22330.

As shown in FIG. 5, the first recess 22335 is recessed from the mounting surface 22330 of the lens body, and is disposed outside the LED light source 2232. The inner surface of the first recess 22335 is configured to be a light incident surface corresponding to the light emitting surface, the light incident surface includes a pair of side surfaces 22335a disposed toward opposite end faces of the lens body, and a connecting surface 22335b connecting the pair of side surfaces. In an embodiment, the first recess 22335 may be similar in shape to the lens body, and is a longitudinally sectioned partial cylinder or an elliptical body. The pair of side faces 22335a are respectively opposite to the pair of end faces for two The connecting surface 22335b may be a curved surface, and preferably, as shown in FIG. 5, the connecting surface 22335b protrudes toward the LED light source 2232, thereby changing the light transmitted from the connecting surface 22335b. For parallel light. The light emitted from the light source 2232, after passing through the lens 2233, obtains a larger illumination angle on the radial direction of the lens 2233 and a narrower illumination angle in the axial direction of the lens 2233, similar to the outgoing light of the fan column.

The second recess 22332 is formed concavely from both end faces of the lens body, and may be concave or partially concave on the entire end surface, and each of the second recesses 22332 faces the surface of the LED light source 2232. a reflecting surface 22332a (preferably a total reflecting surface), wherein the LED light source 2232 transmits at least the light emitted from the pair of side surfaces 22335a to the light emitting surface 22331 by reflection of the reflecting surface 22332a. Preferably, the pair The second concave portion 22332 is symmetrically formed on the two end faces to equalize the light emitted by the two reflecting surfaces 22332a. Preferably, as shown in FIG. 5, the concave apex of the pair of second concave portions 22332 is Falling on the mounting surface 22330, the portions of the formed reflecting surface 22332a can be directed toward the light exiting surface 22331 without facing the mounting surface 22330.

For the operation principle of the collimating lens 2233, referring to FIG. 6 and FIG. 7, for the convenience of description, the direction of the vertical paper surface in FIG. 7 is defined as the longitudinal direction, the left and right direction of FIG. 7 is the horizontal direction, and FIG. 6 is the cross section perpendicular to FIG. Figure, then the left and right sides in Figure 6. The direction is the longitudinal direction, and the direction perpendicular to the paper surface is the lateral direction. As can be seen from the optical path diagram shown in FIG. 8, the light emitted by the LED light source 2232 passes through the connecting surface 22335b to form parallel light to reach the light emitting surface 22331, and the other portion passes through the reflection of the side surface 22335a of the light incident surface and the reflection surface 22332a. Parallel light reaches the exit surface 22331 (ideally, the parallel light is absolutely parallel, but it is not necessarily absolutely parallel in actual production or design). Due to the limiting effect of the reflective surface 22332a on the lateral light output of the LED light source 2232, the light is transmitted in the lateral direction. The angle becomes smaller. On the other hand, as shown in the optical path diagram shown in Fig. 9, in the longitudinal section, after the refraction of the light incident surface and the light exit surface 22331, the longitudinal propagation angle becomes large (i.e., outwardly diffused). As a result, the half-space Lambertian illumination of the original LED light source 2232 passes through the light distribution of the lens, and achieves the purpose of light distribution in the lateral direction and the longitudinal direction, respectively, and the light intensity becomes more uniform.

Since the light emitted from the LED light source 2232 is refracted from the light incident surface, a part of the light passing through the material medium of the collimating lens 2233 (for example, the light emitted from the connecting surface 22335b of the light incident surface) directly reaches the light emitting surface, and the other portion (for example, from the light entering the light) The light emitted from the side surface of the surface is reflected by the reflecting surface 22332a and reaches the light emitting surface 22331. If the concave apex of the second concave portion 22332 does not fall on the mounting surface 22330, the reflecting surface 22332a is partially oriented. The mounting surface 22330 affects the light extraction efficiency. Of course, although it is not the most preferred embodiment, it is also encompassed within the scope of the present patent application.

In summary, the illuminating angle of the light emitted by the LED light source 2232 through the illuminating surface and the illuminating surface 22331 is enlarged along a path propagating toward the transparent cover 221, and the light emitted by the LED light source 2232 passes through. The angle of reflection of the refracting and reflecting surface 22332a of the light incident surface is reduced or unchanged along a path propagating toward the light exiting surface 22331; the collimating lens 2233 is separately controlled by the lateral and longitudinal light rays of the light source 2232. Finally, the light distribution effect of the lateral and longitudinal angles is nearly doubled, and the requirements of the ship navigation signal are met, and the optical efficiency is as high as 88% or more. Referring to FIG. 10, the curve of the light distribution through the collimating lens is shown. Figure.

Further preferably, but not necessarily, as shown in FIG. 4, the light-emitting surface 22331 is provided with a light intercepting portion 22334, and the light intercepting portion 22334 is located on at least one side of the LED light source 2232 (preferably as shown in the figure) Preferably, the light intercepting portion 22334 has at least one pair, and is located on opposite sides of the LED light source 2232 on the light emitting surface 22331; specifically, the light intercepting portion 22334 may be multiple The triangular prisms are arranged in a convex arrangement, and referring to FIG. 11, it can be seen that each prism of the light intercepting portion 22334 refracts the light from the LED light source 2232 laterally, thereby avoiding The main light-emitting area in the middle realizes the light-cutting requirements of traffic lights, especially ship navigation signals.

Referring to FIG. 4 again, in an embodiment, the lens body is integrally formed with a convex portion 22333, preferably formed from a junction of the light-emitting surface 22331 and the mounting surface 22330, and the convex portion 22333 is fixed. a perforation 22333a for fixing to a position to be mounted in combination with a fixing member such as a rivet, a screw, etc.; of course, not limited thereto, for example, the mounting surface of the lens body may be provided with a positioning portion for being combined with a position to be mounted to obtain Positioning, the combination includes: concave-convex fit, A snap joint or the like, for example, the positioning portion is one or more protrusions, and the position to be mounted is provided with a number one corresponding and shape-matched recesses, which are combined to position the lens body.

Referring to FIG. 12a to FIG. 14b, the luminaire structure in this embodiment corresponds to different types of signal lights by a combination of different mounting manners of different numbers of LED lighting units 223 on the bearing surface:

As shown in FIG. 12a, the LED lighting unit 223 is disposed on only one side of the carrying surface 2221 or the LED lighting unit 223 of only one side of the carrying surface 2221 is illuminated, thereby achieving, for example, a small angle on one side of the ship signal light (60° to 120°). The design of the signal light (such as the left/right side light, etc.) for the lighting demand, and the corresponding light distribution curve for Fig. 12b.

For example, in FIG. 13a, the LED light-emitting unit 223 is disposed on both side bearing surfaces 2221 or only the LED light-emitting units 223 of the two-side bearing surface 2221 are illuminated, thereby achieving a single-angle small angle (120°-240°) illumination in a ship signal light, for example. The design of the required signal lights (such as xenon lamps, xenon lamps, towing lamps, etc.), Figure 13b is the corresponding light distribution curve.

For example, in FIG. 14a, the LED light-emitting unit 223 is disposed on the three-side bearing surface 2221 or the LED light-emitting unit 223 of the three-side bearing surface 2221 is illuminated, thereby achieving a large angle (240° to 360°), for example, a ring light in a ship signal light. Design; Figure 14b is a corresponding light distribution graph.

It should be noted that the LED light source and the light distribution component do not necessarily have to be disposed on the side of the light source mounting member. In other embodiments, the light source mounting member may also be omitted, and the position of the LED light source may be changed, and the adopted position is adopted. The structure and setting position of the straight lens vary.

Embodiment 2:

The difference between this embodiment and the first embodiment is that the lamp body has at least one bearing surface for setting the LED light source, and the bearing surface faces the top cover or the base, that is, the LED light source disposed on the bearing surface faces the top. The LED light source may be disposed at at least one of the following places: a middle portion of the lamp body, an end of the lamp body corresponding to the top cover, and an end of the lamp body corresponding to the base, etc. The position and structure of the components also need to be changed accordingly, so that the light emitted by the LED light source can be changed from the light-transmitting cover by the action of the light distribution component.

Specifically, please refer to FIG. 15 to FIG. 21 . In these embodiments, as shown in FIG. 15 , the collimating lens 3 has a light incident surface 34 covering the LED light source, at least configured to face the a light-emitting surface 32 of a portion of the light-transmitting cover and a reflection surface 33 for reflecting the received light toward the light-emitting surface 32; the light emitted by the LED light source 4 is reflected by the light-receiving surface 34 and reflected by the reflective surface 33 And the refraction of the light-emitting surface 32 causes the LED light source 4 to emit light to the top cover or the base at least partially to be emitted in the direction of the lateral light-transmissive cover 5. In this way, the illumination curve of the LED light source is adjusted to the illumination curve conforming to the standard of the signal lamp by the cooperation of the faces of the lens. Similarly, the specific shape of the lens can be changed by adjusting the curvature of the respective mating faces, the curvature, and the refractive index of the material according to the law of refraction and the law of reflection.

Regarding the structural formation of the collimating lens 3, the collimating lens 3 includes: a lens body, which is a solid structure, and includes: a mounting surface 30, a top end surface 31 opposite to the mounting surface 30, and the light emitting surface 32 connecting the mounting surface 30 and the top end surface 31; a first recess 35 for covering the LED light source 4, from the lens body The mounting surface 30 is concavely formed, and the inner surface thereof constitutes the light incident surface 34 corresponding to the light exit surface; the light incident surface 34 opposite to the front end surface 31 has a tapered surface 341 whose tip end faces the tip end surface and The arc has a curvature that is recessed toward the LED light source 4; the second recess 36 is recessed from the tip end surface 31 of the lens body, and the second recess 36 forms the reflecting surface 33 toward the surface of the LED light source 4.

Specifically, as shown in FIG. 16 to FIG. 18, the collimator lens 3 is provided with light for the LED light source 4 under different angles of setting or the light-incident surface of the refractive index and the reflecting surface. The change of the transmission path caused by the action (the angle or the curvature and the change of the refractive index, although the slight differences are not illustrated in FIGS. 16 to 18, but according to the optical laws such as reflection and refraction, combined with the illustrated optical path, Those skilled in the art can understand the changes. As shown in FIG. 16, the light-emitting surface of the light-incident surface-light-emitting surface and the light-incident surface-reflecting surface-light-emitting surface can be made to be wrong, that is, one side. Downward, one side upward; or as shown in FIG. 17, the light-emitting surface-light-emitting surface and the light-incident-reflecting surface-light-emitting surface may be the same as the lateral direction, or As shown in FIG. 18, the light-emitting surface of the "light-incident surface-light-emitting surface" and the "light-incident surface-reflecting surface-light-emitting surface" can be made to be laterally downward, that is, by adjusting the light-incident surface and the light-emitting surface. And the reflecting surface can adjust the angle of light according to the needs to meet different kinds of signals. Light distribution needs. In addition, the light distribution types are all ring-type signal lights. If a fan-shaped range of light distribution is required, a light blocking plate may be disposed inside/outside of the light-transmitting cover to cut off light to block unnecessary portions.

19 to 21, in accordance with the number and arrangement positions of the corresponding LED lighting units (including the LED light source 4 and the collimating lens 3), a plurality of embodiments are provided:

In FIG. 19, two LED light-emitting units (including the LED light source 4 and the collimating lens 3) are disposed at one end of the lamp body 5 corresponding to the top cover and one end of the corresponding base.

In FIG. 20 and FIG. 21, at least one partitioning member 6 is disposed in the lamp body 5, and the lamp body 5 is separated from at least two light distribution spaces, and an LED light emitting unit is disposed in each space, and the LED light emitting unit can be provided. The partitioning member 5 can also be disposed at the two ends of the lamp body 5 corresponding to the top cover and the base, and the structure thereof can be changed according to actual needs to meet different lighting requirements.

In summary, the present patent application provides an LED signal lamp, comprising: a top cover, a base, and a lamp body disposed therebetween; the lamp body includes: a translucent cover having a smooth surface disposed on the outermost layer, The lamp body further includes at least one LED light source located in the transparent cover, and a light distribution component for distributing light to the LED light source, the light distribution component comprising: at least one collimating lens; LED signal lights can be used with a variety of light distribution design to achieve signal requirements, and energy saving and low cost.

The above embodiments are merely illustrative of the principles and effects of the present patent application, and are not intended to limit the present patent application. Anyone familiar with this technology may modify or modify the above embodiments without departing from the spirit and scope of this patent application. change. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and scope of the invention will be covered by the appended claims.

Claims

An LED signal lamp, comprising: a top cover, a base and a lamp body disposed therebetween; wherein

The lamp body includes a translucent cover having a smooth surface disposed on the outermost layer, the lamp body further including at least one LED light source located in the translucent cover, and a light distribution device for the LED light source a light distribution assembly, the light distribution assembly comprising: at least one collimating lens.
The LED signal lamp according to claim 1, wherein the collimating lens comprises: a light incident surface covering the LED light source, a light emitting surface having at least a portion disposed to emit light toward the light transmissive cover, and Receiving the reflected light toward the reflective surface reflected by the light surface; the exiting angle of the light emitted by the LED light source through the refracted surface and the light exiting surface is enlarged along a path propagating toward the transparent cover, the LED The exit angle of the light emitted by the light source after being reflected by the refracting and reflecting surface of the light incident surface is reduced or unchanged along a path propagating toward the light exit surface.
The LED signal lamp of claim 2, wherein the collimating lens comprises:

The lens body is a solid structure, and includes: a convex arc-shaped light-emitting surface, a mounting surface opposite to the light-emitting surface, and at least two opposite end surfaces that are in contact with the light-emitting surface and the mounting surface;

The first recessed portion of the LED light source is recessed from the mounting surface of the lens body, and an inner surface thereof defines a light incident surface corresponding to the light exiting surface; the light incident surface includes a lens facing the lens a pair of side faces provided on opposite end faces of the main body and a connecting face connecting the pair of side faces; a pair of second recessed portions formed concavely from both end faces of the lens main body, each of the second recessed portions facing away The surface of the LED light source constitutes a reflecting surface.
The LED signal lamp according to claim 2, wherein the collimating lens fixing cover is disposed outside the LED light source.
The LED signal lamp of claim 2, further comprising: a light source mounting member disposed in the light transmissive cover, the light source mounting member having at least one bearing surface for arranging the LED light source.
The LED signal lamp according to claim 5, wherein said light source mounting member is cylindrical and has a polygonal cross section, and each side corresponds to a bearing surface.
The LED signal lamp of claim 5, further comprising: a lens cover covering the A lens is fixedly coupled to the light source mounting member, the lens cover having a hole portion exposing the lens.
The LED signal light according to claim 7, wherein at least opposite sides of the bearing surface are respectively provided with a first engaging portion, and the lens cover is provided with a card one by one with the first engaging portion. The second engaging portion is engaged to achieve the fixing.
The LED signal lamp according to claim 5, wherein the bearing surface is disposed at a middle portion of the lamp body toward the translucent cover.
The LED signal lamp according to claim 2, wherein the light exiting surface is provided with a light intercepting portion, and the light intercepting portion is located on at least one side of the LED light source for directing light from the LED light source Lateral refraction.
The LED signal lamp according to claim 10, wherein the light intercepting portion is formed by arranging a plurality of prisms having a triangular cross section.
The LED signal lamp according to claim 2, wherein the collimating lens is outwardly extended to form a convex portion, and the convex portion is provided with a perforation for a fixed use; or the collimating lens is provided with a positioning portion. The positioning portion is coupled to the position to be mounted of the collimating lens.
The LED signal lamp according to claim 1, wherein the collimating lens has a light incident surface that covers the LED light source, a light emitting surface that has at least a portion that is disposed to emit light toward the light transmissive cover, and The received light illuminates the reflecting surface reflected by the light surface; the light emitted by the LED light source passes through the refracting of the light incident surface, the reflection surface and the refracting surface, so that the LED light source emits light to the top cover or the base at least Partial change is to shoot in the direction of the transmissive cover.
The LED signal lamp according to claim 13, wherein said lamp body has at least one bearing surface for arranging an LED light source, said bearing surface facing said top cover or said base, disposed in the following places At least one of the parts of the lamp body, the lamp body corresponding to one end of the top cover, and the lamp body corresponding to one end of the base.
The LED signal lamp of claim 13 wherein said collimating lens comprises:

The lens body is a solid structure, and includes: a mounting surface, a top end surface opposite to the mounting surface, and a light emitting surface connecting the mounting surface and the top surface;

The first recessed portion of the LED light source is recessed from the mounting surface of the lens body, and the inner surface thereof forms a light incident surface corresponding to the light exit surface; and the light incident surface opposite to the top end surface has a portion a tapered surface facing the tip end face and having a curvature that is recessed toward the light source;

The second recess is formed to be recessed from a distal end surface of the lens body, and the second recess forms a reflecting surface toward a surface of the LED light source.