JP6138295B1 - Headlight - Google Patents

Abstract

An object of the present invention is to provide a headlight that switches between a high beam and a low beam with a simple structure. A headlight according to the present invention includes a light emitting means 2 capable of emitting light, a reflecting means 12 having a reflecting surface 121 that receives light emitted from the light emitting means 2 and reflects the light obliquely forward and downward, and in front of the light emitting means 2. Intervene between the first lens 3 installed so as to allow the reflected light from the reflecting means 12 to pass and collect the reflected light, and between the light emitting means 2 and the first lens 3. A first position where the reflected light is refracted and lifted upward, and a second position where the reflected light can directly reach the first lens 3 by being separated from between the light emitting means 2 and the first lens 3. And a second lens 4 arranged to be movable between the positions. [Selection] Figure 4

Description

  The present invention relates to a headlight, and more particularly to a headlight for a vehicle.

  A general headlight switches between a light emitting unit, a reflecting unit that can reflect light emitted from the light emitting unit in a predetermined direction, a lens that covers the light emitting unit and the reflecting unit, and a high beam and a low beam. And switching means. When a halogen lamp or an HID lamp is used as the light emitting means, a light shielding plate is generally used as the switching means, and switching is performed by adjusting the angle or position of the light shielding plate. Further, when an LED is used as the light emitting means, as disclosed in Patent Document 1, the head includes two light emitting modules, a high beam light emitting module and a low beam light emitting module, and switching between them is a switching means. A light has been developed.

US Pat. No. 8,287,163

  However, the headlight disclosed in Patent Document 1 requires two different light emitting modules to switch between a high beam and a low beam, which is complicated in structure and has a labor and cost of manufacturing. There are also increasing drawbacks.

  In view of the above problems, an object of the present invention is to provide a headlight that can switch between a high beam and a low beam with a simple structure.

In order to achieve the above object, the present invention provides a light emitting means capable of emitting light, a reflecting means having a reflecting surface that receives light emitted from the light emitting means and reflects the light obliquely downward to the front, and the reflecting means in front of the light emitting means. The reflected light from the first lens is disposed so as to be able to collect the reflected light by passing through the light emitting means and the first lens. A first position that is refracted and lifted upward; and a second position that is separated from between the light emitting means and the first lens so that the reflected light can directly reach the first lens. A second lens arranged to be movable between the first lens and the light emitted from the first lens when the second lens is in the first position. And the second lens is When in the second position, light emitted from the first lens, the being configured to be low beam directed downward from the high beam, the first lens has a first light morphism Irimen, A first light exit surface, and the first light exit surface is curved so as to face each other while extending forward from both left and right sides, and the thickness of the central portion is larger than the thickness of both upper and lower sides. Protrudes into a convex surface, and when the second lens is in the first position, the second lens receives the reflected light and has a second light incident surface configured in a plane, and the second lens And a second light exit surface that emits the reflected light passing through the second lens to the first lens on the opposite side of the light entrance surface, and the thickness of the central portion is The second light exit surface protrudes into a convex surface so as to be thicker than the thickness on both sides, and the second The light entrance surface and the second light exit surface both extend obliquely forward and upward from the bottom toward the first light entrance surface, and the second light entrance surface and the horizontal surface. There is provided a headlight characterized in that an acute angle formed by is formed to be 15 to 75 degrees .

  According to the above configuration, the present invention includes a first position where the reflected light is refracted and lifted upward by intervening between the light emitting means and the first lens, and the light emitting means and the first lens. Since the second lens is arranged so as to be able to move between the second position where the reflected light can reach the first lens directly away from the second lens, the second lens It is possible to switch between the high beam and the low beam only by moving the light source, and it has a simpler structure than the conventional headlights switched by two different light emitting modules, and the manufacturing labor and cost can be greatly reduced.

It is a component exploded view of the headlight of a 1st embodiment. It is a front view of the headlight of a 1st embodiment. It is sectional drawing which shows the state which emits the low beam of the headlight of 1st Embodiment. It is sectional drawing which shows the state which emits the high beam of the headlight of 1st Embodiment. It is a top view which shows the state which emits the low beam of the headlight of 1st Embodiment. It is a top view which shows the state which emits the high beam of the headlight of 1st Embodiment. It is sectional drawing of the headlight of 2nd Embodiment. It is a top view of the headlight of a 3rd embodiment. It is sectional drawing of the headlight of 4th Embodiment. It is a perspective view of the 2nd lens of the headlight of a 4th embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 and 2 are views showing the headlight of the first embodiment. 3 and 5 are diagrams illustrating a state in which the low beam of the headlight according to the first embodiment is emitted. 4 and 6 are views showing a state in which a high beam is emitted from the headlight according to the first embodiment.

  As shown in FIG. 1, the headlight according to the first embodiment is installed on a base 1 having an upper surface 111 facing upward and a front surface 112 facing forward, and an upper surface 111 of the base 1. The light emitting means 2 that emits light and a reflection surface 121 that is installed on the upper surface 111 of the base 1 and covers the light emitting means 2 and receives light emitted from the light emitting means 2 and reflects it obliquely forward and downward as shown in FIG. The first lens 3 installed on the base 1 so as to allow the reflected light from the reflecting means 12 to pass therethrough and to collect the reflected light in front of the light emitting means 2; As shown in FIG. 4, the light emitted from the first lens 3 is directed forward by intervening between the light emitting means 2 and the first lens 3 to refract the reflected light and lift it upward. A first position to become a high beam; 3 is located below the first position, separated from between the light emitting means 2 and the first lens 3, and the reflected light can directly reach the first lens 3, A second lens 4 arranged and configured on the front surface of the base 1 so that the light emitted from the first lens 3 can move between a second position where the light can be a low beam directed downward from the high beam; It is comprised by.

  As shown in FIG. 2, the base 1 is installed on the front surface 112 of the base 1 so that the left and right guide bars 13 extend in parallel in the vertical direction.

  As shown in FIGS. 1 and 3, the light emitting means 2 includes an installation part 24 whose surface is made of a material that can reflect light, a circuit board 21 installed on the surface of the installation part 24, and a circuit board 21 is configured to include an LED element 22 that is electrically connected to the light source 21 and serves as a light source, and a light shielding portion 23 that protrudes forward from the installation portion 24 so as to block a part of the reflected light from the reflecting means 12. Has been.

  Note that the light emitting direction of the light emitting means 2 is not limited to the upward direction, but if the emitted light can be reflected obliquely forward and downward by adjusting the reflection angle of the reflecting surface 121 of the reflecting means 12, etc. Light can be emitted in any direction.

  As shown in FIG. 3, the reflecting surface 121 of the reflecting means 12 is formed in a substantially elliptical surface.

  As shown in FIG. 1, the first lens 3 is curved so as to face each other while extending forward from the left and right sides of the reflecting means 12, and as shown in FIG. A first light exit surface 322 that protrudes forward and has a convex surface so as to be thicker than both sides, and is opposite to the first light exit surface 322, and is straight in the vertical direction and left-right direction. The first light incident surface 321 having an arc having the same curvature as the curve in FIG. 5 and fixing portions 31 that can be fixed to the left and right sides of the reflecting means 12 on the upper surface of the base 1 by, for example, screwing. The parts 31 are installed on the base 1 by being screwed on the left and right sides of the reflecting means 12 on the upper surface of the base 1.

  As shown in FIG. 1, the second lens 4 is connected to the lens portion 42 formed in a semi-cylindrical shape and the left and right guide bars 13 of the base 1 and slides up and down. It is comprised by the attaching part 41 attached so that it can do.

  The attachment portion 41 has a guide hole 411 extending in the vertical direction at the center. When the screw 5 whose head is wider than the width of the guide hole 411 is passed through the guide hole 411 and the screw 5 is tightened and fixed to the screw hole formed in the base 1, the mounting portion 41 cannot slide up and down. On the other hand, when the screw 5 is loosened while being screwed to the base 1, the mounting portion 41 is screwed to the front surface of the base 1 so that it can slide up and down between the two left and right guide bars 13.

  As shown in FIGS. 3 and 4, the lens portion 42 moves to the first position (FIG. 4: high beam) when the mounting portion 41 is slid upward so that the screw 5 is located at the lower end of the guide hole 411. When the mounting portion 41 is slid downward so that the screw 5 is located at the upper end of the guide hole 411, the screw 5 is connected to the mounting portion 41 so as to be in the second position (FIG. 3: low beam). Yes. The lens part 42 is also formed on a flat surface and, when in the first position, is on the opposite side of the second light incident surface 421 that receives the reflected light and the second light incident surface 421. In order to emit the reflected light passing through the second lens 4 to the first lens 3, the second light emission is convex and protrudes so that the thickness of the central portion is thicker than the thickness of both the left and right sides. It is a convex lens having a surface 422.

  As shown in FIG. 4, the second light incident surface 421 and the second light incident surface 422 both extend obliquely upward and forward from the bottom toward the first light incident surface 321. The acute angle θ formed by the second light incident surface 421 and the horizontal plane L is 15 to 75 degrees (15 to 75 degrees).

  Since the reflected light from the reflecting means 12 travels diagonally forward and downward, if the angle θ exceeds 75 degrees and is vertical, for example, the incident angle at which the reflected light enters the lens unit 42 becomes too large, There is a high probability of reflection. Therefore, the incident angle is reduced by setting the acute angle θ between the second light incident surface 421 and the horizontal plane L to 15 to 75 degrees as described above.

  The second lens 4 can be moved by moving the second lens 4 up and down by providing driving means. As the driving means, for example, an electromagnetic valve can be used. Further, the method of interposing the second lens 4 between the light emitting means 2 and the first lens 3 is not limited to the vertical movement of the present embodiment, and the light emitting means 2 and the first lens can be moved by rotating left and right or rotating. It is also possible to intervene between the lens 3. In such a case, the guide hole 411 and the screw 5 can be omitted.

  According to said structure, when the 2nd lens 4 exists in the said 2nd position, the light emitted from the light emission means 2 is ahead on the reflective surface 121 of the reflection means 12, as FIG.3 and FIG.5 shows. The light is reflected obliquely downward, a part thereof is blocked by the light-shielding portion 23, and the remaining light is condensed on the first lens 3 to form a low beam having a clear cut-off line.

  And when the 2nd lens 4 exists in the said 1st position, as FIG.4 and FIG.6 shows, the light emitted from the light emission means 2 goes to the reflective surface 121 of the reflection means 12 toward the front diagonally downward. After being refracted so that the remaining light is refracted upward by the second lens 4, it is condensed on the first lens 3 and is directed to the front. become.

  That is, the headlight of the present invention switches the headlight from the low beam to the high beam by moving the second lens 4 from the second position to the first position, and the second lens 4 is moved to the first position. Since the headlight is switched from the high beam to the low beam by moving from the first position to the second position, the high beam and the low beam can be connected to each other with a simpler structure than the conventional headlight switched by two different light emitting modules. It is possible to switch, and the labor and cost of manufacturing the headlight can be greatly reduced.

  In the headlight according to the second embodiment, as shown in FIG. 7, the second light incident surface 421 of the lens portion 42 of the second lens 4 is formed in a curved surface that curves forward in the vertical direction and the horizontal direction. Except for this, the configuration is similar to that of the first embodiment.

  In the headlight of the third embodiment, as shown in FIG. 8, the second light exit surface 422 of the lens portion 42 of the second lens 4 is continuous from three arcuate surfaces arranged on the left and right. The configuration is similar to that of the first embodiment except that the first embodiment is formed as described above.

  According to the configuration of the second light emitting surface 422 described above, the reflected light from the reflecting means 12 can be emitted more uniformly from the lens unit 42.

  As shown in FIGS. 9 and 10, the headlight of the fourth embodiment is formed except that the thickness of the lens portion 42 of the second lens 4 is gradually reduced from top to bottom. The configuration is similar to that of the first embodiment.

  According to the configuration of the lens unit 42 described above, the reflected light from the reflecting means 12 can be lifted further upward and emitted from the lens unit 42, so that the irradiation distance of the high beam can be improved.

  Since the headlight of the present invention has a structure for easily switching between a high beam and a low beam, it is preferably used for a vehicle such as a motorcycle or a car.

DESCRIPTION OF SYMBOLS 1 Base 111 Upper surface 112 Front surface 12 Reflection means 121 Reflection surface 13 Guide bar 2 Light emission means 21 Circuit board 22 LED element 23 Light-shielding part 24 Installation part 3 1st lens 31 Fixing part 321 1st light entrance surface 322 1st Light exit surface 4 Second lens 41 Mounting portion 411 Guide hole 42 Lens portion 421 Second light entrance surface 422 Second light exit surface 5 Screw L Horizontal surface

Claims (3)

A light emitting means capable of emitting light;
Reflecting means having a reflecting surface that receives light emitted from the light emitting means and reflects it obliquely forward and downward;
A first lens installed in front of the light emitting means so as to allow the reflected light from the reflecting means to pass therethrough and to collect the reflected light;
A first position for intervening between the light emitting means and the first lens to refract the reflected light and lift it upward; and detaching from between the light emitting means and the first lens; And a second position where reflected light can directly reach the first lens, and a second lens arranged to be movable between the second lens,
When the second lens is in the first position, the light emitted from the first lens becomes a high beam facing forward,
When the second lens is in the second position, the light emitted from the first lens is configured to be a low beam directed downward from the high beam ,
The first lens has a first light entrance surface and a first light exit surface, is curved so as to face each other while extending forward from both left and right sides, and has a thickness at the center portion The first light exit surface protrudes and becomes convex so as to be thicker than the thickness of both upper and lower sides,
When the second lens is in the first position, the second lens receives the reflected light, and is located on a side opposite to the second light incident surface, which is a flat second light incident surface. A second light exit surface that emits the reflected light that passes through the second lens to the first lens, and the thickness of the central portion is greater than the thickness of the left and right sides. The light exit surface of 2 protrudes into a convex surface,
The second light incident surface and the second light incident surface both extend obliquely forward and upward from the bottom toward the first light incident surface, and the second light incident surface. A headlight, characterized in that an acute angle formed by a surface and a horizontal plane is 15 to 75 degrees . 2. The headlight according to claim 1, wherein the thickness of the second lens is formed so as to be gradually reduced from the top to the bottom. Having a base having an upper surface and a front surface;
The light emitting means and the reflecting means are installed on the upper surface of the base,
Two left and right guide bars are installed on the front surface of the base so as to extend vertically.
The second lens is installed in a mounting portion that is mounted so as to be able to slide up and down between the two left and right guide bars, and is located below the first position and the first position. The light emitting means can be moved between two positions, the light emitting means is an LED element that is a light source, a surface is made of a material that can reflect light, an installation part in which the LED element is installed, headlight according to claim 1 or 2, characterized in that it has a light blocking portion which projects forwardly from the installation portion so as to be able to block a portion of the reflected light.

Images