Light projection structure

Abstract

The present invention proposes a light projection structure, which arranges the auxiliary light device on one side of the main light device. The main light device projects a first light pattern, and the auxiliary light device projects a second light pattern, wherein the second light pattern includes a notch. The first light pattern projected by the main light device is projected onto the notch, so that the main light device combined with the auxiliary light device can increase the range of the projected light, produce a more uniform light pattern, and improve the light irradiation area.

Description

Technical Field

[0001] The present invention relates to a light projection structure, in particular to a light projection structure for a lighting device. Background Art

[0002] With the development of the automobile industry, there are certain regulatory requirements for the brightness and light distribution area of vehicle headlights. If the light brightness is unevenly distributed or the brightness distribution range is too small, it will cause driving safety problems.

[0003] With the continuous development of automobile technology, vehicle headlights have also developed accordingly. Halogen headlights, xenon headlights, and LED headlights have appeared on different models one after another. Halogen headlights are special incandescent lamps, which are widely used in the field of automotive lighting. The principle is to use resistance to generate heat when current passes through it. When the temperature is high enough, it emits blackbody radiation with a wavelength in the visible light band. It is generally divided into iodine tungsten lamps and bromine tungsten lamps. After different incandescent lamps are lit, although the filament temperature is not lower than the boiling point of tungsten, a small amount of tungsten will still evaporate at high temperature. When the volatilized tungsten is cooled, it will condense and soon form a black tungsten film on the inner wall of the bulb.

[0004] Xenon headlights (High Intensity Discharge Lamp) are a type of gas discharge lamp. They utilize an electronic ballast to instantly boost the battery's 12V voltage to a trigger voltage of over 23kV. High-voltage pulse electricity then passes between metal electrodes within a completely sealed miniature quartz bulb, stimulating the ionization of substances within the bulb (xenon gas, a small amount of mercury vapor, and metal halides) in an arc to produce light. Xenon headlights have two significant advantages: First, they offer three times the illumination intensity of ordinary halogen bulbs while consuming only two-thirds the energy. Second, they use a light color similar to daylight, creating better visual conditions for the driver.

[0005] LEDs (Light Emitting Diodes), also known as light-emitting diodes, are now a key component of many vehicles' taillights, high-mounted brake lights, and daytime running lights. Some even use them in headlights. LEDs offer higher luminous efficiency, consuming only 1 / 20 the energy of halogen lamps. They also boast a lifespan of up to 100,000 hours, essentially eliminating the need for replacement throughout the vehicle's design lifespan. Their compact size also facilitates layout and design.

[0006] In previous technologies, most vehicle headlights produced a fixed light field and brightness. The light emitted by the headlights was mostly concentrated in the area in front of the vehicle, while the surrounding brightness was relatively weak. This created more blind spots around the vehicle for the driver. When driving at night or in dimly lit areas, if something happened, such as a pedestrian or animal moving toward the area in front of the vehicle, or when turning, the insufficient brightness in front of the vehicle meant that when a pedestrian, animal, or object appeared in front of the vehicle and the vehicle was driving fast, the driver often failed to react in time, leading to accidents.

[0007] In summary, to address the shortcomings of current automotive headlights, the inventors, after extensive research and development, have invented a light projection structure. This structure utilizes an auxiliary light device positioned adjacent to a main light device. The main light device emits a pixel array of light and projects a first light pattern. The auxiliary light device emits a second light and projects a second light pattern. This second light pattern includes a notch, onto which the first light pattern is projected. This structure produces a more uniform light pattern and increases the illuminated area. Summary of the Invention

[0008] The main purpose of the present invention is to provide a light projection structure, which arranges an auxiliary light device on one side of a main light device, the main light device projects a first light pattern, and the auxiliary light device projects a second light pattern, the second light pattern includes a notch portion, the first light pattern is projected onto the notch portion, and the first light pattern is a dynamic pattern.

[0009] In order to achieve the above-mentioned objectives, the present invention discloses a light projection structure, which includes a main light device and an auxiliary light device, the main light device projects a first light pattern, the auxiliary light device is arranged on one side of the main light device, the auxiliary light device includes a second light-emitting module, the second light-emitting module emits a second light, a second light deflection device, which is arranged on one side of the second light-emitting module, the second light is projected onto the second light deflection device and reflected by the second light deflection device, a second lens device, which is arranged on a second light-emitting side of the second light deflection device, part of the second light is reflected by the second light deflection device through the second lens device, and another part of the second light is reflected by the second light deflection device onto the second light conversion device, and the second light pattern is projected on the second lens device, wherein the second light pattern includes a notch portion, and the first light pattern is projected on the notch portion.

[0010] In one embodiment of the present invention, it is also disclosed that the main light device includes a first light-emitting module, which emits a first light; a first light deflection device, which is arranged below the first light-emitting module, and the first light is projected onto the first light deflection device and reflected by the first light deflection device; a first light shape conversion device, which is arranged on one side of the first light deflection device, and the first light shape conversion device is arranged below the first light-emitting module, and the first light is projected onto the first light shape conversion device and reflected into a pixel array light; a first lens device, which is arranged on a first light-emitting side of the first light shape conversion device, and the pixel array light passes through the first lens device and projects the first light shape pattern on the first lens device.

[0011] In one embodiment of the present invention, it is disclosed that the first light shape conversion device is a digital micromirror device (DMD), and the first light shape conversion device controls the first light pattern to be a dynamic pattern.

[0012] In one embodiment of the present invention, a first base is further provided. The first light shape conversion device is provided on one side of the first base, and the first light deflection device and the first lens device are respectively provided on the front end of the first base.

[0013] In one embodiment of the present invention, it is also disclosed that the first lens device includes a first hollow shell and at least one first lens, the first hollow shell is arranged at the front end of the first base, and the first light deflection device is arranged in the first hollow shell, and the at least one first lens is arranged at the front end of the first hollow shell.

[0014] In one embodiment of the present invention, it is disclosed that an inclination angle of the fixing portion relative to the first light-shielding portion and the second light-shielding portion is in a range of 10 to 30 degrees.

[0015] In one embodiment of the present invention, a second base is further provided, on which the second light-emitting module and the second light deflection device are respectively provided, and the second light deflection device covers the second light-emitting module, and the second light shape conversion device and the second lens device are respectively provided at the front end of the second base.

[0016] In one embodiment of the present invention, it is also disclosed that the second lens device includes a second hollow shell and a second lens, the second hollow shell is arranged at the front end of the second base, and the second light shape conversion device is arranged in the second hollow shell, and the second lens is arranged at the front end of the second hollow shell. The second lens device is further provided with a first groove and a second groove on the second hollow shell, and the first groove corresponds to the first light-shielding portion, and the second groove corresponds to the second light-shielding portion, one side of the first light-shielding portion is arranged in the first groove, and one side of the second light-shielding portion is arranged in the second groove.

[0017] In one embodiment of the present invention, it is disclosed that the two arcs on the second light-shaped pattern correspond to a first arc edge of the first light-shielding portion and a second arc edge of the second light-shielding portion, respectively.

[0018] In one embodiment of the present invention, it is disclosed that the notch is disposed between the two arcs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : It is a three-dimensional schematic diagram of a preferred embodiment of the present invention;

[0020] Figure 2A : It is an exploded schematic diagram of a main light device according to a preferred embodiment of the present invention;

[0021] Figure 2B : It is a cross-sectional schematic diagram of a main lamp device according to a preferred embodiment of the present invention;

[0022] Figure 2C : It is a side view schematic diagram of a main light device according to a preferred embodiment of the present invention;

[0023] Figure 3A : It is a three-dimensional schematic diagram of an auxiliary light device according to a preferred embodiment of the present invention;

[0024] Figure 3B : It is a schematic exploded perspective view of an auxiliary light device according to a preferred embodiment of the present invention;

[0025] Figure 3C : It is a cross-sectional schematic diagram of an auxiliary light device according to a preferred embodiment of the present invention;

[0026] Figure 3D : It is a schematic diagram of a light pattern of a main light device combined with an auxiliary light device according to a preferred embodiment of the present invention; and

[0027] Figure 4 : It is a side view schematic diagram of a second light shape conversion device according to a preferred embodiment of the present invention.

[0028]

Figure number comparison

[0029] 1 Light projection structure

[0030] 2 Main light unit

[0031] 21 First Plinth

[0032] 212 Fan

[0033] 22 first light-emitting module

[0034] 222 first substrate

[0035] 224 first light-emitting unit

[0036] 24. First light deflecting device

[0037] 26. First light shape conversion device

[0038] 262 First light output side

[0039] 28 First lens assembly

[0040] 282 first hollow shell

[0041] 284 First lens

[0042] 29 First Light Pattern

[0043] 3 Auxiliary light device

[0044] 31 Second Plinth

[0045] 32 second light emitting module

[0046] 322 Second substrate

[0047] 324 Second light-emitting unit

[0048] 34. Second light deflection device

[0049] 36. Second light shape conversion device

[0050] 361 Digital Micromirror Device

[0051] 362 fixed part

[0052] 364 first light shielding portion

[0053] 3642 First Extension

[0054] 366 second light shielding portion

[0055] 3662 Second Extension

[0056] 368 Second light-emitting side

[0057] 38 Second lens assembly

[0058] 382 Second hollow shell

[0059] 384 Second lens

[0060] 385 First Groove

[0061] 386 Second Groove

[0062] 39 Second light pattern

[0063] 392 Notch

[0064] L1 first ray

[0065] L12 pixel array light L2 second light

[0066] R tilt angle DETAILED DESCRIPTION

[0067] In order to further understand and appreciate the structural features and effects achieved by the present invention, preferred embodiments and detailed descriptions are provided as follows:

[0068] In order to solve the problem that most conventional projection devices used in vehicle headlights produce a fixed light field and brightness, the light emitted by the headlights is mostly concentrated in the area in front, and the brightness of the surrounding areas is relatively weak, resulting in more blind spots around the car for the driver. When driving at night or driving in dimly lit areas, if there are situations in the surroundings, such as pedestrians or animals moving toward the area in front of the vehicle, or when turning, due to insufficient brightness in the surroundings in front of the vehicle, when pedestrians, animals or objects have appeared in front of the vehicle and the vehicle is driving at a high speed, the driver often cannot react in time, which may lead to accidents. Therefore, after long-term research and development, the inventors finally invented a light projection structure, which arranges an auxiliary light device on one side of a main light device, the main light device projects a first light pattern, and the auxiliary light device projects a second light pattern, the second light pattern includes a notch portion, the first light pattern is projected on the notch portion, and the first light pattern is a dynamic pattern.

[0069] First, see Figure 1 , which is a three-dimensional schematic diagram of a preferred embodiment of the present invention. As shown in the figure, the present invention is a light projection structure 1, which includes a main lamp device 2 and an auxiliary lamp device 3, and the auxiliary lamp device 3 is arranged on one side of the main lamp device 2.

[0070] Please continue reading Figure 2A , which is an exploded schematic diagram of a main light device according to a preferred embodiment of the present invention, Figure 2B, which is a cross-sectional schematic diagram of a main light device of a preferred embodiment of the present invention. As shown in the figure, the main light device 2 includes a first light-emitting module 22, a first light deflection device 24, a first light shape conversion device 26 and a first lens device 28.

[0071] The first light deflection device 24 is arranged below the first light-emitting module 22. It is further explained that the first light deflection device 24 is arranged on the light-emitting path of the first light-emitting module 22. The first light shape conversion device 26 is arranged on one side of the first light deflection device 24 and below the first light-emitting module 22. It is further explained that the first lens device 28 is arranged on a first light-emitting side 262 of the first light shape conversion device 26. The first light-emitting module 22 has a downward light-emitting structure, and the first light deflection device 24 is inclined corresponding to the first light-emitting module 22.

[0072] Please continue reading Figure 2B and Figure 2C , Figure 2C This is a side view schematic diagram of the main light device of a preferred embodiment of the present invention. As shown in the figure, when the first light-emitting module 22 emits a first light L1, the first light L1 will be projected onto the first light deflection device 24 and reflected by the first light deflection device 24. The first light L1 is reflected by the first light deflection device 24. The first light L1 is projected onto the first light shape conversion device 26 and reflected into a pixel array light L12. The pixel array light L12 passes through the first lens device 28 and is projected through the first lens device 28. The pixel array light L12 is projected through the first lens device 28 to project a first light shape pattern 29.

[0073] The main light device 2 emits the first light L1 and converts it into the pixel array light L12, and projects the first light pattern 29, wherein the first light pattern 29 is a dynamic pattern. The first light shape conversion device 26 in the main light device 2 is a digital micromirror device (DMD). The digital micromirror device arranges a matrix of microlenses (precision, miniature mirrors) on a semiconductor chip. Each microlens controls a pixel in the projected image, which can control the shape of the first light pattern 29 to make it a dynamic pattern.

[0074] Please continue reading Figures 2A to 2C, the connection relationship of the components in the main lamp device 2 is described in more detail. The main lamp device 2 further includes a first base 21, the first light shape conversion device 26 is arranged on the first base 21, and the first light-emitting module 22 further includes a first substrate 222 and at least one first light-emitting unit 224. The first substrate 222 is arranged above the first base 21, and the at least one first light-emitting unit 224 is arranged below the first substrate 222 and emits light downward, wherein the at least one first light-emitting unit 224 is a light-emitting diode (LED), and the first light deflection device 24 and the first lens device 28 are respectively arranged at the front end of the first base 21. Further description, the first A lens device 28 includes a first hollow shell 282 and at least one first lens 284. The first hollow shell 282 is arranged at the front end of the first base 21. That is, one end of the first hollow shell 282 is arranged at the front end of the first base 21. The first light deflection device 24 is arranged in the first hollow shell 282. The at least one first lens 284 is arranged on the inner side of the front end of the first hollow shell 282. Further, the at least one first lens 284 is arranged at the other end of the first hollow shell 282 relative to the other end of the first base 21. A fan 212 is arranged on one side of the first base 21 to enhance the heat dissipation of the first base 21.

[0075] Please continue reading Figure 3A , which is a three-dimensional schematic diagram of an auxiliary light device according to a preferred embodiment of the present invention, Figure 3B , which is a three-dimensional exploded schematic diagram of an auxiliary lamp device of a preferred embodiment of the present invention. As shown in the figure, the auxiliary lamp device 3 includes a second light-emitting module 32, a second light deflection device 34, a second light shape conversion device 36 and a second lens device 38.

[0076] The second light deflection device 34 is disposed on one side of the second light-emitting module 32. It is further explained that the second light deflection device 34 blocks the light path of the second light-emitting module 32. The second light shape conversion device 36 includes a digital micromirror element 361 and a fixing portion 362. The digital micromirror element 361 is disposed above the fixing portion 362 and is similar to the above-mentioned digital micromirror device (DMD). The fixing portion 362 is disposed at the front end below the second light deflection device 34. The two ends of the fixing portion 362 respectively extend downward to form a first light-shielding portion 364 and a second light-shielding portion 366. It is further explained that the two ends of the fixing portion 362 respectively extend downward and to both sides to form the first light-shielding portion 364 and the second light-shielding portion 366. The second lens device 38 is disposed on a second light-emitting side 368 of the deflection device 36.

[0077] Please continue reading Figure 3C, which is a cross-sectional schematic diagram of an auxiliary lamp device of a preferred embodiment of the present invention. As shown in the figure, when the second light-emitting module 32 emits a second light L2, the second light L2 will be projected onto the second light deflection device 34 and reflected by the second light deflection device 34. Part of the second light L2 is reflected by the second light deflection device 34 and passes through the second lens device 38, and another part of the second light L2 is reflected by the second light deflection device 34 onto the second light shape conversion device 36, and part of the second light L2 is projected through the second lens device 38.

[0078] Please continue reading Figures 3A to 3C as well as Figure 3D , which is a schematic diagram of the light pattern of the main light device combined with the auxiliary light device in a preferred embodiment of the present invention. As shown in the figure, part of the second light L2 is projected into a second light pattern 39 through the second lens device 38. The second light pattern 39 includes a notch portion 392, and the notch portion 392 corresponds to the fixed portion 362. That is, the shape or area size of the notch portion 392 will change with the shape or area size of the fixed portion 362, and the first light pattern 29 is projected onto the notch portion 392.

[0079] Please continue reading Figures 3A to 3C , the connection relationship of the components in the auxiliary lamp device 3 is described in more detail. The auxiliary lamp device 3 further includes a second base 31, the second light-emitting module 32 and the second light deflection device 34 are respectively arranged on the second base 31, and the second light deflection device 34 covers / shields the second light-emitting module 32. The second light-emitting module 32 further includes a second substrate 322 and at least one second light-emitting unit 324. The second substrate 322 is arranged on the second base 31, and the at least one second light-emitting unit 324 is arranged on the second substrate 322. The second light deflection device 34 is arranged on the second base 31 and covers the at least one second light-emitting unit 324, wherein the at least one second light-emitting unit 324 is The light emitting diode (LED), the second light shape conversion device 36 and the second lens device 38 are respectively arranged at the front end of the second base 31. Further description is made, the second lens device 38 includes a second hollow shell 382 and a second lens 384. The second hollow shell 382 is arranged at the front end of the second base 31, that is, one end of the second hollow shell 382 is arranged at the front end of the second base 31, the second light shape conversion device 36 is arranged in the second hollow shell 382, and the second lens 384 is arranged at the front end of the second hollow shell 382. Further description is made, the second lens 384 is arranged at the other end of the second hollow shell 382 relative to one end of the second hollow shell 382 and the front end of the second base 31.

[0080] In addition, the second hollow shell 382 is further provided with a first groove 385 and a second groove 386. The first groove 385 and the second groove 386 are provided on two sides of the second hollow shell 382. The first groove 385 and the second groove 386 correspond to a first extension portion 3642 on one side of the first light shielding portion 364 and a second extension portion 3662 on one side of the second light shielding portion 366, respectively. When the second hollow shell 382 is provided at the front end of the second base 31, the first extension portion 3642 and the second extension portion 3662 are respectively provided. The second extension portion 3662 is respectively arranged in the first groove 385 and the second groove 386, which can prevent light leakage. Further explanation, in order to effectively fix the first shading portion 364 and the second shading portion 366, one side of the first extension portion 3642 can be arranged on one side of the first groove 385, and one side of the second extension portion 3662 is arranged on one side of the second groove 386. When the auxiliary lamp device 3 is subjected to severe vibration, it can prevent the second light shape conversion device 36 from falling off.

[0081] Please continue reading Figure 4 , which is a side view schematic diagram of the second light shape conversion device of a preferred embodiment of the present invention. As shown in the figure, the fixing portion 362 is higher than the first light shielding portion 364 and the second light shielding portion 366, and the heights of the first light shielding portion 364 and the second light shielding portion 366 are parallel to each other. The top surface of the fixing portion 362 is inclined to the first light shielding portion 364 and the second light shielding portion 366, and an inclination angle R of the fixing portion 362 relative to the first light shielding portion 364 and the second light shielding portion 366 is between 10 and 30 degrees. The inclination angle R is in order to save the area of the fixing portion 362 and effectively generate the notch portion 392 on the second light shape pattern 39.

[0082] Please continue reading Figure 3D and Figure 4 As shown in the figure, the two arcs on the second light-shaped pattern 39 are a first arc edge 394 and a second arc edge 396. Because part of the second light L2 is reflected by the second light deflection device 34 through the second lens device 38, and another part of the second light L2 is reflected by the second light deflection device 34 to the second light-shaped conversion device 36, the part of the second light L2 that is not reflected to the second light deflection device 34 will form the second light-shaped pattern 39, and the first arc edge 394 and the second arc edge 396 on the second light-shaped pattern 39 correspond to the shapes of the first light-shielding portion 364 and the second light-shielding portion 366, respectively.

[0083] To sum up, the light projection structure of the present invention arranges the auxiliary lamp device on one side of the main lamp device, when a first light-emitting module in the main lamp device emits a first light to a first light deflection device for reflection, wherein the second light is reflected to a first light shape conversion device to form a pixel array light, and the pixel array light will project a first light shape pattern through a first lens device, and when the second light-emitting module in the auxiliary lamp device emits the second light to the second light deflection device for reflection, the reflected part of the second light will project the second light shape pattern through the second lens device, and the other part of the second light will be projected onto the second light shape conversion device, and the second light shape pattern includes the notch portion, and the first light shape pattern projected by the main lamp device is projected onto the notch portion, so that the main lamp device combined with the auxiliary lamp device can increase the range of the projected light, produce a more uniform light shape pattern, and improve the light irradiation area.

[0084] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A light projection structure, characterized in that: It includes: a main light device that projects a first light pattern; and An auxiliary light device is provided on one side of the main light device, and the auxiliary light device comprises: a second light-emitting module, emitting a second light; a second light deflecting device disposed on one side of the second light emitting module, the second light being projected onto the second light deflecting device and being reflected by the second light deflecting device; as well as a second lens device disposed on a second light-emitting side of the second light deflecting device, wherein a portion of the second light is reflected by the second light deflecting device and passes through the second lens device, and another portion of the second light is reflected by the second light deflecting device and is then reflected onto a second light shape conversion device, thereby projecting a second light pattern onto the second lens device. The second light shape conversion device includes a fixing portion; The second light pattern includes a notch portion, and the first light pattern is projected onto the notch portion.

2. The light projection structure according to claim 1, wherein: The main light device comprises: a first light-emitting module, which emits a first light; a first light deflecting device disposed below the first light emitting module, the first light being projected onto the first light deflecting device and being reflected by the first light deflecting device; a first light shape conversion device disposed on one side of the first light deflecting device and disposed below the first light emitting module; the first light is projected onto the first light shape conversion device and reflected into a pixel array light; and A first lens device is disposed on a first light-emitting side of the first light-shape conversion device. The pixel array light passes through the first lens device and projects the first light-shape pattern on the first lens device.

3. The light projection structure according to claim 2, wherein: The first light shape conversion device is a digital micromirror element, and the first light shape conversion device controls the first light pattern to make it a dynamic pattern.

4. The light projection structure according to claim 2, wherein: A first base is further provided, the first light shape conversion device is provided on one side of the first base, and the first light deflection device and the first lens device are respectively provided on the front end of the first base.

5. The light projection structure according to claim 4, wherein: The first lens device includes a first hollow shell and at least one first lens. The first hollow shell is arranged at the front end of the first base, and the first light deflection device is arranged in the first hollow shell, and the at least one first lens is arranged at the front end of the first hollow shell.

6. The light projection structure according to claim 1, wherein: A second base is further provided, the second light emitting module and the second light deflecting device are respectively provided on the second base, and the second light deflecting device covers the second light emitting module, the second light shape conversion device and the second lens device are respectively provided at the front end of the second base.

7. The light projection structure according to claim 6, wherein: The second lens device includes a second hollow shell and a second lens, the second hollow shell is arranged at the front end of the second base, the second light shape conversion device is arranged in the second hollow shell, and the second lens is arranged at the front end of the second hollow shell. The second lens device is further provided with a first groove and a second groove on the second hollow shell, and the first groove corresponds to a first light-shielding portion, and the second groove corresponds to a second light-shielding portion, one side of the first light-shielding portion is arranged in the first groove, and one side of the second light-shielding portion is arranged in the second groove.

8. The light projection structure according to claim 7, wherein: An inclination angle of the fixing portion relative to the first light shielding portion and the second light shielding portion is between 10 and 30 degrees.

9. The light projection structure according to claim 7, wherein: The two arcs on the second light-shaped pattern respectively correspond to a first arc edge of the first light-shielding portion and a second arc edge of the second light-shielding portion.

10. The light projection structure according to claim 9, wherein: The notch is located between the two arcs.

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