CN109163304B

CN109163304B - Light distribution system of bicycle lamp

Info

Publication number: CN109163304B
Application number: CN201810426770.0A
Authority: CN
Inventors: 高国华
Original assignee: Jiashan Shengguang Electronics Co ltd
Current assignee: Jiashan Shengguang Electronics Co ltd
Priority date: 2018-05-07
Filing date: 2018-05-07
Publication date: 2021-05-04
Anticipated expiration: 2038-05-07
Also published as: CN109163304A

Abstract

A light distribution system of a bicycle lamp comprises a reflecting cup and a light source. The light source has an optical axis. The light reflecting cup comprises a light incident surface and a light reflecting surface. The contour line of the reflecting surface comprises a first reflecting arc, a second reflecting arc and a transition section. The transition section extends from the first reflection arc to the second reflection arc, and the extending direction is perpendicular to the optical axis and extends towards the direction far away from the optical axis. On a cross section perpendicular to the optical axis, the contour line of the cross section of the reflecting surface where the first reflecting arc is located is a third reflecting arc, and the contour line of the cross section of the reflecting surface where the second reflecting arc is located is a fourth reflecting arc. The radius of the fourth reflected arc is smaller than the radius of the third reflected arc. The light distribution system is provided with the first reflection arc, the second reflection arc, the transition section, the third reflection arc and the fourth reflection arc along the direction of the optical axis, so that light spots formed by the bicycle lamp are two in a vertically separated mode, and each light spot is basically rectangular.

Description

Light distribution system of bicycle lamp

Technical Field

The invention belongs to the technical field of bicycle equipment, and particularly relates to a light distribution system of a bicycle lamp.

Background

The bicycle is an indispensable vehicle in daily life of people, is used for commuting or outing, and along with low-carbon call and people's interest on health, many people begin to ride the bicycle again. Nowadays, the types of bicycles are very many, including mountain bikes, off-road bikes, and the like, each having its function. However, people often find that the bicycle cannot be ridden due to too dark days when using the street lamp, and even if the street lamp is available, the people can hardly see the road on the ground clearly. Some people can use the flashlight for illumination, but the flashlight held by one hand can cause insecurity when riding, so that the existing bicycle can be provided with the vehicle-mounted lamp arranged on the bicycle frame.

With the development of science and technology and the improvement of living standard, some countries have specific requirements on light spots formed by lamps loaded on bicycles, rather than just lighting.

Disclosure of Invention

In view of the above, the present invention provides a light distribution system of a bicycle lamp capable of forming a predetermined light spot, so as to meet the above requirements.

A light distribution system of a bicycle lamp comprises a reflecting cup and a light source arranged on the reflecting cup. The light source has an optical axis. The light reflecting cup comprises a light incident surface and a light reflecting surface connected with the light incident surface. The optical axis is perpendicular to the light incident surface. On a section along the optical axis, the contour line of the light reflecting surface comprises a first reflecting arc, a second reflecting arc and a transition section arranged between the first reflecting arc and the second reflecting arc. The first and second reflective arcs have positive curvature with respect to the light source, and the radius of the first reflective arc is smaller than the radius of the second reflective arc. The transition section extends from the first reflection arc to the second reflection arc, and the extending direction is perpendicular to the optical axis and extends towards the direction far away from the optical axis. On a cross section perpendicular to the optical axis, the contour line of the cross section of the reflecting surface where the first reflecting arc is located is a third reflecting arc, and the contour line of the cross section of the reflecting surface where the second reflecting arc is located is a fourth reflecting arc. The radius of the fourth reflected arc is smaller than the radius of the third reflected arc.

Further, the other end of the first reflection arc is connected with the light incident surface.

Furthermore, on the cross section along the optical axis, the circle center of the first reflection arc and the first reflection arc are respectively located on two sides of the light incident surface.

Furthermore, on the cross section along the optical axis, the circle center of the second reflection arc and the second reflection arc are respectively located on two sides of the light incident surface.

Furthermore, on the cross section along the optical axis, the circle center of the first reflection arc and the first reflection arc are respectively located on two sides of the light incident surface, and the distance between the circle center of the second reflection arc and the light incident surface is greater than the distance between the circle center of the first reflection arc and the light incident surface.

Further, the third and fourth reflective arcs have positive curvature with respect to the light source.

Further, in an extending direction along the optical axis, a radius of the third reflection arc decreases in a direction away from the light source.

Further, in an extending direction along the optical axis, the radius of the four-reflection arc decreases toward a direction away from the light source.

Further, the second reflective arc receives and reflects outgoing light from the light source.

Further, the first reflective arc receives emergent light from the light source and reflects the emergent light out.

The light distribution system of the bicycle lamp provided by the invention is provided with the first reflecting arc, the second reflecting arc and the transition section along the optical axis direction, and is provided with the third reflecting arc and the fourth reflecting arc in the direction vertical to the optical axis, so that light spots formed by the bicycle lamp can be divided into two light spots in an up-down manner, and each light spot is basically rectangular.

Drawings

Fig. 1 is a schematic structural view of a light distribution system of a bicycle lamp provided by the invention.

Fig. 2 is a schematic cross-sectional view of a reflector of the light distribution system of the bicycle lamp shown in fig. 1, taken along the optical axis.

Fig. 3 is a partial enlarged view of fig. 2 at a.

Fig. 4 is a schematic cross-sectional view of a reflector of the light distribution system of the bicycle light fixture of fig. 1 along a direction perpendicular to the optical axis.

Fig. 5 is a second schematic cross-sectional view of the reflector of the light distribution system of the bicycle lamp shown in fig. 1, taken along a direction perpendicular to the optical axis.

Fig. 6 is a light spot structure diagram formed by the light distribution system of the bicycle lamp in fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 and 2, the present invention is a schematic structural view of a light distribution system of a bicycle lamp. The light distribution system of the bicycle lamp comprises a reflecting cup 1 and a light source 2 arranged on the reflecting cup 1. It is contemplated that the light distribution system of the bicycle lamp further includes other functional modules, such as an assembly component for assembling the reflector cup 1, a lamp housing, a lamp holder, a power supply, and electrical connection components, etc., which should be well known to those skilled in the art and will not be described herein.

The light source 2 can be an LED lamp bead. The LED lamp bead should be a technology known to those skilled in the art, and is also called a light emitting diode, which is a semiconductor electronic element capable of converting electric energy into light energy. It is well known to those skilled in the art that each light source should include an optical axis, which should be the guide and standard of the optical design. In the present embodiment, the light source 2 has an optical axis 20.

The light reflecting cup 1 comprises a light incident surface 10 and a light reflecting surface 11 connected with the light incident surface 10. The light incident surface 10 includes a light source installation hole 101. The light source installation hole 101 is used for installing the light source 2 or for emitting the light emitted from the light source 2 through the light source installation hole 101 to the light reflecting surface 11. It will be appreciated by those skilled in the art that the profile of the reflective surface 11 will determine the location of the light emitted by the received light source 2 and also the path of the light reflected by the reflective surface 11, and thus the shape and configuration of the spot formed. Therefore, in order to describe the profile of the light reflecting surface 11, the description will be explained from two dimensions of a section perpendicular to the optical axis 20 and a section along the optical axis 20.

As shown in fig. 2 and 3, in a cross section along the optical axis 20, the contour line of the light-reflecting surface 11 includes a first reflecting arc 111, a second reflecting arc 112, and a transition section 113 disposed between the first reflecting arc 111 and the second reflecting arc 112. It is of course conceivable that the light-reflecting surface 11 further includes other structures, such as a light-blocking cover, a mounting structure, etc., in a cross section along the optical axis 20, which will not be described in detail herein. The first and second

reflective arcs

111 and 112 have positive curvatures with respect to the light source 2, and the radius of the first reflective arc 111 is smaller than that of the second reflective arc 112, so that light emitted from the light source 2 is emitted to different positions, and light emitted to the first and second

reflective arcs

111 and 112 is collected and emitted by the first and second

reflective arcs

111 and 112, respectively, under the action of the arc structures of the first and second

reflective arcs

111 and 112, that is, light emitted from the light source 2 is collected in the optical axis direction. One end of the first reflection arc 111 is connected to the edge transition section 113, and the other end thereof is connected to the light incident surface 10. On the cross section along the optical axis, the center of the first reflection arc 111 and the first reflection arc 111 are separated at two sides of the light incident surface 10. In the cross section along the optical axis, the center of the second reflection arc 112 and the second reflection arc 112 are respectively located at two sides of the light incident surface 10, and the distance between the center of the second reflection arc 112 and the light incident surface 10 is greater than the distance between the center of the first reflection arc 111 and the light incident surface 10. One section of the transition section 113 is connected to the first reflective arc 111, the other section is connected to the second reflective arc 112, and the transition section 113 extends from the first reflective arc 111 to the second reflective arc 112 in a direction perpendicular to the optical axis 20 and away from the optical axis 20. Due to the transition section 113, the emergent light of the first reflected arc 111 and the second reflected arc 112 is layered, that is, the emergent light of the first reflected arc 111 and the second reflected arc 112 forms two different irradiation areas, that is, the first light spot 3 and the second light spot 4 shown in fig. 6. In the direction along the optical axis 20, the arc length of the first reflected arc 111 is smaller than the arc length of the second reflected arc 112, so that the width of the first reflected arc 111 forming the first light spot 3 along the optical axis 20 is smaller than the width of the second light spot 4 formed by the second reflected arc 112.

Referring to fig. 4 and 5, in a cross section perpendicular to the optical axis 20, a contour line of a cross section of the light reflecting surface 11 where the first reflecting arc 111 is located is a third reflecting arc 114, and a contour line of a cross section of the light reflecting surface 11 where the second reflecting arc 112 is located is a fourth reflecting arc 115. The radius of the fourth reflected arc 115 is smaller than the radius of the third reflected arc 114. The third and fourth reflective arcs 114, 115 have positive curvature with respect to the light source 2. In the direction extending along the optical axis 20, the radius of the third reflected arc 114 decreases in a direction away from the light source 20. The radius of the fourth reflected arc decreases in a direction extending along the optical axis 20 away from the light source 20. Since the first and second

reflective arcs

111 and 112 are arc-shaped in a cross section perpendicular to the optical axis 20, light from the light source 2 can be condensed to perform a condensing function.

The light distribution system of the bicycle lamp provided by the invention is provided with the first and second reflection arcs 111 and 112 and the transition section 113 along the optical axis direction, and is provided with the third and fourth reflection arcs 114 and 115 in the direction perpendicular to the optical axis direction, so that light spots formed by the bicycle lamp are two and separated from each other up and down, and each light spot is basically rectangular. The "basic" is caused by the characteristics of light, because the light scatters during the traveling process, and thus a light spot with lower brightness is formed around the light spot formed by the light emitted from the reflector cup 1, but the light spot formed by the light emitted from the reflector cup 1 has an illumination effect. The spot is therefore considered herein to be substantially rectangular.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. A light distribution system of a bicycle lamp is characterized in that: the light distribution system of the bicycle lamp comprises a light reflecting cup and a light source arranged on the light reflecting cup, wherein the light source is provided with an optical axis, the light reflecting cup comprises a light incident surface and a light reflecting surface connected with the light incident surface, the optical axis is vertical to the light incident surface, the outline of the light reflecting surface comprises a first reflecting arc, a second reflecting arc and a transition section arranged between the first reflecting arc and the second reflecting arc, the first reflecting arc and the second reflecting arc are positive curvatures relative to the light source, the radius of the first reflecting arc is smaller than that of the second reflecting arc, the transition section extends from the first reflecting arc to the second reflecting arc, the extending direction is vertical to the optical axis and extends towards the direction far away from the optical axis, and the transition section is vertical to the optical axis, the contour line of the cross section of the reflecting surface where the first reflecting arc is located is a third reflecting arc, the contour line of the cross section of the reflecting surface where the second reflecting arc is located is a fourth reflecting arc, and the radius of the fourth reflecting arc is smaller than that of the third reflecting arc.

2. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: the other end of the first reflection arc is connected with the light incident surface.

3. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: on the cross section along the optical axis, the circle center of the first reflection arc and the first reflection arc are located on two sides of the light incident surface.

4. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: and on the section along the optical axis, the circle center of the second reflection arc and the second reflection arc are respectively arranged at two sides of the light incident surface.

5. The light distribution system of a bicycle light fixture of claim 4, wherein: the edge on the cross-section of optical axis, the centre of a circle of first reflection arc and first reflection arc divide and lie in the both sides of going into the plain noodles, the centre of a circle of second reflection arc with the distance of going into the plain noodles is greater than the centre of a circle of first reflection arc with the distance of going into the plain noodles.

6. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: the third and fourth reflective arcs have positive curvature with respect to the light source.

7. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: the radius of the third reflective arc decreases in a direction extending along the optical axis away from the light source.

8. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: the radius of the four-reflection arc decreases in a direction away from the light source in an extending direction along the optical axis.

9. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: the second reflective arc receives and reflects the outgoing light from the light source.

10. A light distribution system for a bicycle light fixture as defined in claim 1, wherein: the first reflective arc receives and reflects the outgoing light from the light source.