A modularized headlight has a heat sink base, a lens assembly on a front end of the heat sink base, a first illuminating module and a first reflector on a first stage of the heat sink base, a second illuminating module and a second reflector on a second stage of the heat sink base, and a shading component on the first stage. When the first illuminating module is emitting light, the light beams are reflected by the first reflector toward the lens assembly through the shading component to provide a low beam mode. When the second illuminating module is emitting light, the light beams are reflected by the second reflector toward the lens assembly to provide a high beam mode. The modularized headlight is switched between the two modes without mechanical mechanism so that components of the modularized headlight may not be worn out and durability is improved.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims priority under 35 U.S.C. 119 from China Patent Application No. 201720247094.1 filed on Mar. 14, 2017, which is hereby specifically incorporated herein by this reference thereto.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a modularized headlight, especially to a modularized headlight that can provide both high beams and low beams.

2. Description of the Prior Arts

With the advance of automotive industry, how to provide a safe, stable, and sturdy headlight for illumination becomes an important field in the automotive industry.

According toFIGS. 10 and 11, a conventional headlight comprises an installing base91, a reflector92, an illuminating module93, a shading component94and a lens95. The installing base91has a protrusion911and a sliding groove912on a front side of the installing base91. A turning component913is disposed under the protrusion911. The reflector92is mounted on a rear side of the installing base91and the reflector92has a reflecting surface921formed on an inner surface of the reflector92. The illuminating module93is mounted at a center of the reflector92. The shading component94has a sleeve portion941on a right side of the shading component94. The sleeve portion941is sleeved on the protrusion911and thereby the shading component94is rotatable with respect to the front side of the installing base91. A left side of the shading component94is mounted in the sliding groove912. The shading component94further has an extending portion942, and the extending portion942is formed at a bottom end of the right side of the shading component94. The extending portion942extends downward and is mounted in the turning component913. The lens95is mounted at a front end of the installing base91.

When the headlight provides a high beam mode, a signal is transmitted to the turning component913, which makes the turning component913drive the extending portion942to move rightward. Meanwhile, the left side of the shading component94moves downward in a radial direction along the sliding groove912and thereby the shading component94may not shade a lower edge of the illuminating module93. Therefore, light beams generated by the illuminating module93may be reflected by the reflecting surface921of the reflector92, and most of the light beams pass through a middle portion and an upper portion of the lens95. In other words, the light beams can be concentrated and can illuminate a far area. On the contrary, when the headlight provides a low beam mode, another signal is transmitted to the turning component913, which makes the turning component913drive the extending portion942to move back. Meanwhile, the shading component94shades the lower edge of the illuminating module93, which makes the reflecting surface921of the reflector92reflect the light beams emitted by the illuminating module93, so that most of the light beams are transmitted form a middle and a lower part of the lens95and thereby the headlight provides divergent light beams and illuminates a near but large area.

Consequently, the conventional headlight is switched by a mechanical mechanism, which makes the shading component94shade or not shade the lower edge of the illuminating module93for controlling courses of the light beams and thereby provides the high beam mode or the low beam mode. However, the mechanism is prone to wear out when switching. The higher a frequency of switching is, the faster the mechanism wears out, which may make the headlight broken and not working, such that an accident happens. Thus, a durability of the conventional headlight should be improved.

To overcome the shortcomings, the present invention provides a headlight to mitigate or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the present invention is to provide a modularized headlight that can provides a high beam mode and a low beam mode.

The modularized headlight has:

a lens assembly comprising:an optical axis;

a heat sink base, a front end of the heat sink base connected to the lens assembly and comprising:a first stage formed on the front end of the heat sink base; anda second stage formed on a rear end of the heat sink base;

a first illuminating module mounted on the first stage and under the optical axis;

a first reflector mounted on the first stage and comprising:a first reflecting surface facing the first illuminating module;

a second illuminating module mounted on the second stage and under the optical axis;

a second reflector mounted on the second stage and comprising:a second reflecting surface facing the second illuminating module; and

a shading component mounted on the heat sink base at a front side of the first illuminating module.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference toFIGS. 1 and 2, a modularized headlight in accordance with the present invention comprises a heat sink base10, a first illuminating module21, a first reflector22, a second illuminating module31, a second reflector32, a shading component40, and a lens assembly50. In this embodiment, the heat sink base10comprises a heat sink component11and a fixing frame12.

Then please refer toFIGS. 2 and 3, which show a structure of the heat sink base10. The heat sink base10includes a front end and a rear end opposite each other, and a first side and a second side opposite each other. The first side is a right portion of the heat sink base10, and the second side is a left portion of the heat sink base10. The heat sink base10comprises a first stage101, a second stage102, and a heat sink portion103. The first stage101is formed at the rear end of the heat sink base10. The second stage102is formed at the front end of the heat sink base10. In accordance withFIG. 8, the first stage101is inclined upward at an angle θ. The heat sink portion103is formed on the front end of the heat sink base10.

In this preferred embodiment, the second stage102is formed under and in front of the first stage101. In other words, the second stage102is below the first stage101.

The heat sink component11is mounted on the first stage101. A front end of the heat sink component11is concaved inward and forms a cavity111for accommodating the first illuminating module21and the first reflector22. In this preferred embodiment, the heat sink component11comprises multiple heat sink fins, and the heat sink component11is made of aluminum for providing better heat sink capability.

The second stage102comprises two first connecting portions104. The two first connecting portions104are mounted respectively on a left edge and a right edge of the second stage102and near the front end of the heat sink base10. The fixing frame12is mounted on the first connecting portions104. In other words, the fixing frame12is disposed at the front end of the heat sink base10. In this embodiment, the fixing frame12is fixed on the first connecting portions104by screws.

The fixing frame12comprises a first opening121on a center of the fixing frame12. The front end of the heat sink base10extends frontward, through and out of the first opening121and thereby the heat sink portion103of the heat sink base10is disposed at a front surface of the fixing frame12.

The first illuminating module21is mounted on the first stage101and comprises a first substrate211and three first LEDs (Light Emitting Diode)212. In this preferred embodiment, the first substrate211is fixed on the first stage101by multiple screws. The first substrate211includes a first portion and a second portion opposite each other. The first portion of the first substrate211is a left side of the first substrate211and the second portion of the first substrate211is a right side of the first substrate, such that the first portion and the second portion of the first substrate211are corresponding to the first side and the second side of the heat sink base10. The first LEDs212are mounted on the first portion, the second portion, and a middle portion of the first substrate211respectively so that the first LEDs212are spaced apart from each other.

In this preferred embodiment, the first substrate211further comprises a first cable213connected to a power controlling circuit (not illustrated in the drawings) of a vehicle, and thereby the first LEDs212can be controlled to emit or not by controlling the vehicle.

In this preferred embodiment, each one of the first LEDs212is a low power LED (3 watts, for example). In comparison with one high power LED that generates heat at one point such that the heat is hard to disperse, heat generated by multiple low power LEDs can be dissipated more easily.

The first reflector22is mounted on the first stage101and in the cavity111of the heat sink component11, and the first reflector22covers the first illuminating module21. In this preferred embodiment, the first reflector22is fixed on the heat sink base10by a plurality of screws. Then please refer toFIGS. 4 and 7, which illustrate a relation between the first reflector22and the first illuminating module21. An inner surface of the first reflector22forms a first reflecting surface221. The first reflecting surface221comprises a left side reflecting surface area, a middle reflecting surface area, and a right side reflecting surface area, which respectively face the three first LEDs212mounted on the first portion, the middle portion, and the second portion of the first substrate211, and thereby light beams generated by the first LEDs212are reflected.

In this preferred embodiment, with the first stage101inclined upward by the angle θ, an emitting surface of each one of the first LEDs212faces the first reflecting surface221of the first reflector22.

A front end of the first reflector22forms a reflecting portion222. An inner surface of the reflecting portion222forms a first reflective surface223such that the upward and forward light beams generated by the first LEDs212are reflected by the first reflective surface223.

The second illuminating module31is mounted on the second stage102and comprises a second substrate311and a second LED312. In this preferred embodiment, the second substrate311is fixed on the heat sink base10by a plurality of screws.

In this preferred embodiment, the second substrate311comprises a second cable313connected to the power controlling circuit of the vehicle, and thereby the second LED312can be controlled by the vehicle.

The second reflector32is mounted on the second stage102for covering the second illuminating module31. In this preferred embodiment, the second reflector32is fixed on the heat sink base10by a plurality of screws.

Then refer toFIGS. 2 and 7, which illustrate a relation between the second reflector32and the second illuminating module31. An inner surface of the second reflector32forms a second reflecting surface321. The second reflecting surface321faces an emitting surface of the second LED312of the second illuminating module31and thereby reflects light beams generated by the second LED312.

The shading component40is mounted on the heat sink base10. As shown inFIGS. 2 and 3, in this preferred embodiment, the shading component40is fixed on the heat sink base10by a plurality of screws and is mounted between the first illuminating module21and the second reflector32.

Then please refer toFIGS. 5 and 6, which show a structure of the shading component40. The shading component40is arcuate and has a first end and a second end opposite each other. The first end is a left end of the shading component40and the second end is a right end of the shading component40, and thereby the first end and the second end correspond to the first side and the second side of the heat sink base10. A front side surface of the shading component40forms a second reflective surface41. In this preferred embodiment, the second reflective surface41is an inclined surface. A left part of a top portion of the shading component40forms a shade portion42extending upward. The shade portion42comprises a slope421formed on a right end of the shade portion42.

In this preferred embodiment, as shown inFIG. 7, the second reflective surface41corresponds in location to the first reflecting portion223of the first reflector22.

The lens assembly50is mounted on the front end of the heat sink base10. As shown inFIGS. 2 and 3, the lens assembly50comprises a lens frame51and a lens52.

The lens frame51comprises a second opening511, a plurality of engaging portions512, and a plurality of second connecting portions513. The second opening511is formed in a middle of the lens frame51for accommodating the lens52. The engaging portions512are formed on an inner surface of the lens frame51and are spaced apart from each other for engaging an edge of the lens52. Thus, the lens52is fixed on the lens frame51. The second connecting portions513are formed on an outer surface of the lens frame51, and the second connecting portions513extend rearward. With the second connecting portions513mounted on the fixing frame12, the lens frame51is fixed on the front surface of the fixing frame12. In this preferred embodiment, the second connecting portions513are fixed on the fixing frame12by multiple screws.

In this embodiment, the lens52is a convex lens. Precisely, the lens52is a biconvex lens or a plano-convex lens. In this preferred embodiment the lens52is a plano-convex lens, but it is not limited thereto. In a center of the lens52is an optical axis as shown inFIG. 8. The first LEDs212and the second LED312are mounted under the optical axis, and the top portion of the shading component40is on a focus F of the lens52.

Then refer toFIGS. 5 and 8. A first length L1is a length from the first LEDs212to the focus F of the lens52. A second length L2is a length from the focus F of the lens52to the lens52. The second length L2is larger than the first length L1. When the modularized headlight of the present invention is switched to a low beam mode, the vehicle transmits a power controlling signal to the first illuminating module21through the first cable213, so that the first LEDs212emit light beams. Because the first length L1is shorter than the second length L2, the light beams generated by the first LEDs212are converged significantly by the first reflecting surface221, and then are reflected outward to the lens52through the shading component40, and thus the low beam mode is provided. Besides, because the first length L1is shorter than the second length L2, the modularized headlight of the present invention has enough space for disposing the heat sink component11and thereby the heat dissipation capability is improved.

Because the light beams are transposed right and left by the lens52, when the light beams are reflected by the first reflecting surface221and through the shading component40, with the shade portion42and the slope421, courses of the light beams are changed and pass through the lens52, and thereby a cut-off line is formed so that the light beams can comply with regulations.

Furthermore, because part of the light beams generated by the first LEDs212are emitted upward and forward, the light beams can be reflected by the first reflective surface223of the reflecting portion222and toward the second reflective surface41of the shading component40, and thus the light beams are transmitted outward and pass through the lens52, which causes the modularized headlight of the present invention to partially emit light upward.

When the modularized headlight of the present invention is switched to a high beam mode, the vehicle transmits another power controlling signal to the second illuminating module31through the second cable313, so that the second LED312emits light beams. Then please refer toFIG. 9, which shows courses of the light beams that are emitted by the second LED312and reflected by the second reflecting surface321of the second reflector32.

With the second LED312is located within the range of the second length L2, the light beams generated by the second LED312may pass through a point after the focus F because of the imaging rules, and then are reflected by the second reflecting surface321and are transmitted outward from the lens52, and thereby a high beam mode is provided.

With the aforesaid structure, the first illuminating module21, the first reflector22and the shading component40become a low beam assembly of the modularized headlight of the present invention, and the second illuminating module31and the second reflector32become a high beam assembly of the modularized headlight of the present invention. The modularized headlight of the present invention can switch between the low beam mode and the high beam mode without any mechanical mechanism, so that a rate of wearing out by a switch is declined and thereby a durability of the modularized headlight of the present invention is improved.

In addition, with the first length L1shorter than the second length L2and the second illuminating module31mounted on the second stage102of the heat sink base10, space utilization of the modularized headlight of the present invention is optimized. Furthermore, though a volume of the modularized headlight of the present invention is not enlarged, the heat sink base10inside the modularized headlight of the present invention still can be enlarged and thus provide a better heat dissipation ability to the first illuminating module21and the second illuminating module31.

Besides, because the heat sink base10, the heat sink component11, the fixing frame12, the first illuminating module21, the first reflector22, the second illuminating module31, the second reflector32, the shading component40, and the lens assembly50are screwed by screws, the modularized headlight of the present invention can be assembled quickly, so that the modularized headlight of the present invention can be modularized and the components can be changed and suit different using conditions or regulations.