JP3152780U - Bicycle light - Google Patents

Abstract

A bicycle light capable of complying with laws and regulations is provided. The present invention relates to a bicycle light including a light body and a light source attached to the light body, and an optical structure is attached in the vicinity of the light source. Includes a single lens 30 and a reflective surface 40 positioned above the lens, and the lens 30 has a lens curvature capable of irradiating light on a road surface, and the reflective surface 40 includes: It is a columnar curved surface, and is characterized by exhibiting a curve that approximates a parabola. Irradiation light from the light source is formed uniformly and horizontally extending from near to far, and a good contrast effect is obtained in the vertical direction. [Selection] Figure 4

Description

The present invention relates to a lighting device for transportation such as a bicycle, and more particularly, to a bicycle light that can comply with laws and regulations.

In recent years, the issues of global environmental conservation and energy conservation have been emphasized, and in addition, the storm of the global financial crisis originating in the United States has begun to slam into individual real economies. For this reason, households are deeply affected and the burden on individuals is heavy. Bicycles are therefore becoming more and more popular because they are not polluted and are healthy, and have gained high popularity from the world.

Regarding bicycles, in order to guarantee the safety of users, the robustness of the body structure and the high brightness of the lighting system are naturally emphasized. For example, as shown in FIG. 1, in the inspection of a bicycle light according to Taiwan (country level) regulations, it is necessary to set the survey distance to 10 meters and measure at least the measurement points HV, L1, R1, and the illuminance of the light receiving area.

By the way, there are very few products that can clear the above-mentioned strict inspection, and even the majority of existing products cannot clear the above-mentioned inspection even if auxiliary parts such as a transmission / reflection light cover and a diffusion optical member are used. One of the phenomena that the inspection cannot be cleared is that the light intensity of the zone 1 is too high, causing glare and greatly affecting the driving safety of oncoming vehicles. In addition, since the measurement point HV is a range that is most noticed by a person riding a bicycle, it is essential that the illuminance is 10 lux or more and the illuminance in the lower region is not less than 1.5 lux. Once a bicycle light fails to pass the above inspection, sales and distribution to overseas markets will be blocked.
The present invention has been made in view of the above-mentioned drawbacks of conventional bicycle lights.

The main problem of the present invention is to provide a bicycle light that can conform to the inspection regulations and in particular the lighting effect can meet the international inspection standards.

In order to solve the above problems, a bicycle light including a light body and a light source attached to the light body, wherein the horizontal direction and the vertical direction passing through the light source are defined as an X axis and a Y axis, The direction perpendicular to the position where the axis and the Y axis are orthogonal is the Z axis, an optical structure is attached in the vicinity of the light source, and the optical structure provides a good contrast effect in the vertical (Y axis) direction. The present invention is characterized in that the irradiation light from the light source is formed by extending horizontally in the irradiation (Z-axis) direction.

The optical structure includes one lens and a reflective surface positioned above the lens, and the lens has a lens curvature capable of irradiating light on a road surface, and the reflective surface is X It exhibits a columnar curved surface that extends along the axial direction, and exhibits a curve that approximates a parabola in the YZ plane.

Since the present invention has the above-described structure, the irradiation light is formed uniformly and horizontally extending from near to far on the road surface irradiated by the light source, and a good contrast effect is obtained in the vertical direction. There is an effect.

It is a schematic diagram of the inspection law of the bicycle light of Taiwan which makes a measurement distance 10 meters. It is an illumination intensity distribution figure of the standard by the inspection method in FIG. It is a road illumination distribution map of the standard by the inspection method in FIG. It is a schematic diagram of Example 1 of the bicycle light according to the present invention. It is a schematic diagram of Example 2 of the bicycle light according to the present invention. It is a top view of the lens of FIG. FIG. 6 is a schematic three-dimensional schematic diagram of the reflecting piece of FIG. 5. FIG. 6 is a schematic three-dimensional schematic diagram viewed from another angle of the reflecting piece of FIG. 5. It is a schematic diagram of Example 3 of the bicycle light according to the present invention.

The best mode for carrying out the present invention will be described below in detail with reference to the drawings.
As shown in FIG. 2, according to the international inspection standard, the illuminance of the bicycle light (hereinafter referred to as a vehicle light) is roughly divided into a cut-off area A, a brightest area B, and a second brightest area C. In addition, one contrast region a is subdivided between the cut-off region A and the brightest region B. The cut-off area A has an illuminance smaller than 2 lux, and the contrast area a can form a good contrast.

In addition, the international inspection norm provides related regulations for the lighting distribution on the road. For example, as shown in FIG. 3, the traveling direction of the bicycle is F, the region within the forward distance S from the bicycle light or the vehicle light 100 is referred to as the near light region D, and the illumination region exceeding the forward distance S is the far light. This is called region E. The near light region D is an illumination region in which the forward distance S is 2 meters or less, and a line where the forward distance reaches 10 meters is a boundary line of the far light region E.

Therefore, the present invention can obtain the illuminance of the brightest region B in the near-light region D, and the illuminance is 2 lux or less in the far-light region E without causing glare that adversely affects the driving safety of the oncoming vehicle. An object of the present invention is to provide a bicycle light whose lighting effect can satisfy the inspection standard value of illuminance according to international regulations.

In order to achieve the above object, the bicycle light of the present invention has a light source attached to a light body, the light source is the origin of a three-dimensional orthogonal coordinate axis, the horizontal direction passing through the light source is the X axis, and passes through the light source. The vertical direction is the Y axis, the direction perpendicular to the intersection of the X axis and the Y axis is the Z axis, and an optical structure is attached to the light source.

The light source may be illumination that emits light, and may be, for example, a light bulb, a light emitting diode (abbreviated as Light-Emitting Diode, LED), or an LED module. A light bulb or LED can emit light when power is input. The light source can be attached to the interior of the car lamp, for example, at an intermediate position of a cup cover having an optical reflection effect. The cup cover may be fixed inside the vehicle lamp or may be attached so that it can be displaced.

The optical structure according to the present invention includes one lens and a reflective surface positioned above the lens. The lens has a lens curvature capable of irradiating the road surface with light. The reflection surface exhibits a columnar curved surface that extends along the X-axis direction, and exhibits a curve that approximates a parabola in the YZ plane. Thereby, the irradiation light beam is uniformly and horizontally extended from near to far on the road surface irradiated by the light source, and a good contrast effect is obtained in the vertical direction.

When electric energy is input to the light source to generate a light beam, a radially emitted light wave forms reflected light on the reflecting surface and forms a uniform and horizontal light beam up to a far target area. Thereby, the standard value of the brightest area according to the international inspection standard can be satisfied. At the same time, the area that is not illuminated by the reflected light is considerably darker, and a strong contrast between the reflected light and the illuminated area can be formed in the vertical direction. Thereby, the contrast area prescribed | regulated to an international test | inspection code | symbol can be cleared, and the illumination effect from which a favorable contrast effect is acquired can be achieved.

The reflected light satisfying the standard value of the brightest region can provide a good road surface lighting effect in the near light region. With respect to the light beam emitted from the light source, it reaches the road surface in the far-light region due to the refraction of the curvature of the lens. Although the illumination effect in the far-light region is inferior to that in the near-light region, the illumination requirement necessary for the object in the second brightest region defined in the international inspection standard can be satisfied.

In the present invention, the optical structure is designed more delicately. For example, the lens is a positive lens whose volume is cut in half. Since the positive lens has a predetermined refractive index, the thickness is considerably large. The manufacturing cost can be reduced by setting the lens thickness appropriately so as not to affect the refractive index. In the present invention, the central area of the positive lens is recessed from the outside to the inside, and a multi-step curved surface is formed so that the thickness of the lens is reduced and the focusing ability of the positive lens is not affected. . Further, the lens can be replaced by a curved surface that can reflect light to a far road surface.

The reflecting surface is provided on the surface of the reflecting piece, and the reflecting piece is deflected and condensed in multiple steps toward the center in the X-axis direction to enhance luminance. Of course, a reflecting piece is further formed in some reflecting zones by molding means or bending means, and the first zone and the third zone thus formed have columnar curved surfaces extending along the X-axis direction, and the light source The irradiation light is uniformly and horizontally stretched from near to far on the road surface irradiated with the light, and a good contrast effect is obtained in the vertical direction. The second zone and the fourth zone are in the near light region (or the light source). Reinforce the irradiation effect in the zone close to.

In addition, a reflecting member is attached between the reflecting surface (or reflecting piece) and the lens (or curved surface), the reflecting member has a flat or columnar curved surface, and rays are directed to the reflecting surface (or reflecting piece). It can be made incident.

In the bicycle light according to the first embodiment of the present invention, as shown in FIG. 4, the light source 10 is an LED attached to the inside of the light body, and an optical structure 20 adjacent to the light source 10 is attached. The optical structure 20 includes one lens 30 and a reflecting surface 40 positioned above the lens 30.

The lens 30 is a positive lens whose volume is cut in half, and has a lens curvature capable of irradiating light on a distant road surface. When electric energy is input to the light source 10 to generate a light beam, the light beam is incident on and transmitted through the lens 30, and a predetermined refracted light 31 is obtained by the lens curvature, and a near light region in front of the vehicle lamp 100 shown in FIG. D and the road surface of the far-light region E are irradiated. The illumination demand on the road surface of the far-light region E corresponds to the illumination effect of the second brightest region C shown in FIG. Therefore, the refracted light due to the lens curvature can be irradiated to a distant road surface, and a good illumination effect can be achieved.

In order to clarify the technical characteristics of the reflecting surface 40, the light source 10 is the origin of the three-dimensional orthogonal coordinate axis, the horizontal line passing through the light source 10 is the X axis, and the vertical line passing through the light source 10 is used. Is a Y axis, and a line perpendicular to the place where the X axis and the Y axis intersect is a Z axis, whereby spatial coordinates around the light source 10 can be drawn.

The reflective surface 40 exhibits a columnar curved surface that extends along the X-axis direction, and exhibits a curve that approximates a parabola in the YZ plane. Thereby, the light beam of the light source 10 can be projected uniformly and horizontally to a far target area, and a good contrast effect can be achieved even in the vertical direction. In short, the light beam emitted from the light source 10 is applied to the reflecting surface 40 at a certain incident angle, and the reflected light 41 is generated through the reflecting surface 40. The reflected light 41 is combined with the refracted light 31 to form the light flux in the brightest region B shown in FIG. 2 to achieve a good contrast contrast effect, and in the near light region D in front of the vehicle lamp 100 shown in FIG. Can provide lighting effects of international inspection standards.

In the bicycle light according to the second embodiment of the present invention, as shown in FIGS. 5 and 6, in addition to the LED as the light source 10 ', the optical structure 20' is more delicately configured. The optical structure 20 ′ includes a lens 30 ′, which is also a positive lens whose volume is cut in half, and is a multi-stage curved surface that is inwardly contracted in a central region 32 ′ of the convex lens surface. 33 'is formed. Thereby, the thickness of the lens 30 'can be reduced, but there is no influence on the light collecting ability. Further, by entering a light beam into the lens 30 ′, predetermined refracted light 31 ′ can be collected.

Referring again to FIG. 5, the surface of the reflecting piece on the side facing the lens 30 ′ is a reflecting surface 40 ′, the opposite surface is a back surface 42 ′, and the reflecting surface 40 ′ has a plurality of reflecting surfaces. Form a zone. The plurality of reflection zones are installed on the reflection piece 50 or the reflection surface 40 ′ by molding means or bending means. As shown in FIGS. 7 and 8, the reflective surface 40 'is provided with a first zone 51, a second zone 52, a third zone 53, and a fourth zone 54 that are adjacent to each other. Further, as shown in FIG. 8, along the X-axis (see FIG. 5), the reflecting piece 50 is folded at the center (Z-axis direction) to form multi-stage (or two-stage) reflecting pieces 55 and 56. . Thereby, the number of reflection zones can be increased from four to eight.

FIG. 5 shows a reflecting piece 50 that is multi-stage and folded at the center. By this reflecting piece 50, light can be collected overlapping the central region of the light flux, and the central illuminance can be increased. The first zone 51 and the third zone 53 of the reflecting piece 50 exhibit a columnar curved surface that extends along the X-axis direction, so that the reflected light 41 ′ extends uniformly and horizontally in a far target region. It is formed and a good contrast effect is obtained in the vertical direction. In addition, the second zone 52 and the fourth zone 54 of the reflecting piece 50 are configured to reinforce the irradiation of the road surface close to the light source. In this way, in addition to directly irradiating a part of the light beam on the road surface in the near light region D shown in FIG. 3, it is also possible to irradiate the road surface from directly under the vehicle light 100 to the far light region E. Can be achieved.

In this embodiment, a reflecting member 60 is attached between the reflecting surface 40 ′ (or the reflecting piece 50) and the lens 30 ′, and the reflecting member 60 exhibits a flat surface or a columnar curved surface. Thereby, incident light is able to irradiate near or far target road surfaces by being transmitted through the reflecting member 60 and reflected to the first zone 51 of the upper reflecting piece 50.

As shown in FIG. 9, the bicycle light according to the third embodiment of the present invention is similar to the configuration of the second embodiment shown in FIG. 5, and the difference is that the reflection curved surface 70 replaces the half lens. As shown in the figure, the reflection curved surface 70 is positioned below the reflection piece 50 'in a state of being cut in half. Incident light is reflected to a nearby road surface through the reflection curved surface 70, and further extended to a far road surface to enhance illumination.

DESCRIPTION OF SYMBOLS 100 Car lamp 10 Light source 10 'Light source 20 Optical structure 20' Optical structure 30 Lens 30 'Lens 31 Refracted light 32' Central area 33 'Curved surface 40 Reflective surface 40' Reflective surface 41 Reflected light 41 'Reflected light 42 Backlight surface 50 Reflective piece 51 1st zone 52 2nd zone 53 3rd zone 54 4th zone 55 Multistage reflective piece 56 Multistage reflective piece 60 Reflective member 70 Reflective curved surface

Claims (12)

A bicycle light comprising a light body and a light source attached to the light body,
The horizontal direction and the vertical direction passing through the light source are the X axis and the Y axis, and the direction perpendicular to the place where the X axis and the Y axis are orthogonal is the Z axis.
An optical structure is attached in the vicinity of the light source, and the optical structure provides a good contrast effect in the vertical (Y-axis) direction, and the irradiation light from the light source extends horizontally in the irradiation (Z-axis) direction. A bicycle light characterized by being configured to be formed. The optical structure includes one lens and a reflective surface positioned above the lens,
The lens has a lens curvature capable of irradiating the road surface with light,
The reflective surface exhibits a columnar curved surface that extends along the X-axis direction, exhibits a curve that approximates a parabola in the YZ plane,
2. The bicycle according to claim 1, wherein the irradiation light is uniformly and horizontally extended from near to far on a road surface irradiated with the light source, and a good contrast effect is obtained in the vertical direction. Light. The bicycle light according to claim 2, wherein the lens is a positive lens whose volume is cut in half. In addition, a reflecting piece is provided, and the reflecting surface is provided on the surface of the reflecting piece, and the reflecting piece is formed in multiple stages by folding along the X-axis direction at the center in the Z-axis direction. The bicycle light according to claim 2, characterized in that the light and brightness are enhanced. The optical structure includes one lens and a reflecting piece positioned above the lens,
The lens is a positive lens whose volume is cut in half, and has a lens curvature capable of irradiating the road surface with light,
The reflecting piece has a reflecting surface formed by extending the irradiation light uniformly and horizontally from near to far on the road surface irradiated by the light source, and the reflecting surface is a columnar curved surface extending along the X-axis direction. The bicycle light according to claim 1, wherein the bicycle light has a curve that approximates a parabola in the YZ plane. The optical structure includes one lens, a reflecting piece positioned above the lens, and a reflecting member,
The lens has a lens curvature capable of irradiating the road surface with light,
The reflecting piece has a first zone, a second zone, a third zone, and a fourth zone adjacent to each other, and the first zone and the third zone have columnar curved surfaces that extend along the X-axis direction. Present, the irradiation light is uniformly and horizontally stretched from near to far on the road surface irradiated by the light source, and a good contrast effect is obtained in the vertical direction, and the second zone and the fourth zone are: Reinforce the irradiation effect in the near-light region near the light source,
The bicycle light according to claim 1, wherein the reflection member is positioned between the reflection piece and the lens and reflects light to the reflection piece. The lens is a positive lens whose volume is cut in half, and a curved surface that inwardly shrinks inwardly is formed in the center region of the lens, thereby reducing the thickness of the lens, The bicycle light according to claim 6, wherein the bicycle light is configured not to affect the light collecting ability. The bicycle light according to claim 6, wherein the reflection piece is formed in multiple stages by being folded at the center in the Z-axis direction along the X-axis direction, thereby enhancing light collection and luminance. The optical structure includes one lens, a reflecting piece positioned above the lens, and a reflecting member,
The lens is a positive lens whose volume is cut in half, and has a lens curvature capable of irradiating the road surface with light.
The reflecting piece includes a first zone that exhibits a columnar curved surface that extends along the X-axis direction, a second zone that reinforces the irradiation effect in the near-light region near the light source, and a columnar shape that extends along the X-axis direction. It has a third zone that exhibits a curved surface and a fourth zone that reinforces the irradiation effect in the near-light region close to the light source, and is formed in multiple stages by folding along the X-axis direction at the center in the Z-axis direction. Strengthen light and brightness,
The bicycle light according to claim 1, wherein the reflection member is positioned between the reflection piece and the lens and reflects light to the reflection piece. The lens is a positive lens whose volume is cut in half, and a curved surface that inwardly shrinks inwardly is formed in the center region of the lens, thereby reducing the thickness of the lens, The bicycle light according to claim 9, wherein the bicycle light is configured not to affect the light collecting ability. The optical structure includes a reflective curved surface, a reflective piece positioned above the reflective curved surface, and a reflective member,
The curved surface can irradiate the road surface with light,
The reflecting piece has a first zone, a second zone, a third zone, and a fourth zone adjacent to each other, and the first zone and the third zone have columnar curved surfaces that extend along the X-axis direction. Present on the road surface irradiated by the light source, the irradiation light is uniformly and horizontally extended from near to far, and a good contrast effect is obtained in the vertical direction, and the second zone and the fourth zone are Enhance the irradiation effect in the near-light region near the light source,
The bicycle light according to claim 1, wherein the reflection member is positioned between the reflection piece and the reflection curved surface, and reflects light to the reflection piece. The bicycle light according to claim 11, wherein the reflection pieces are formed in multiple stages by being folded at the center in the Z-axis direction along the X-axis direction, thereby enhancing light collection and luminance.