Vehicle lamp

Abstract

The utility model relates to a vehicle lamp, in particular to a vehicle lamp capable of forming an optimal light beam pattern. According to the vehicle lamp provided by the embodiment of the utility model, a light beam pattern is formed by a plurality of lamp modules which are arranged along at least one direction, and each of the plurality of lamp modules can comprise a light source part, a light source part and a light source part, an optical path adjustment unit located in front of the light source unit and configured to guide and adjust a path of light generated from the light source unit; and a lens portion located in front of the optical path adjustment portion and transmitting the light guided by the optical path adjustment portion to form the beam pattern, in which the lens portion may include: a plurality of incident lenses; and a plurality of emission lenses that emit light incident to each of the plurality of incidence lenses.

Description

Technical Field

[0001] The utility model relates to a vehicle lamp, and more particularly to a vehicle lamp capable of forming an optimal light beam pattern. Background Art

[0002] Typically, a vehicle is equipped with a variety of vehicle lamps, which are intended to provide a lighting function to facilitate identification of objects around the vehicle when driving at night and a signal function to inform surrounding vehicles or road users of the vehicle's driving status.

[0003] For example, headlights and fog lights are mainly intended for lighting, while turn signals, taillights and brake lights are mainly intended for signaling. The setting criteria and specifications of these vehicle lamps have been stipulated through relevant laws and regulations in order to give full play to their respective functions.

[0004] Among them, the headlights irradiate light in the direction of travel of the vehicle to ensure the driver's forward field of vision, thereby playing a very important role in achieving safe driving.

[0005] The beam pattern formed by the headlamp includes a hot spot area and an extended area, and the hot spot area is formed to have a higher brightness than the extended area, thereby playing a role in ensuring the field of vision distance. In order to ensure a sufficient field of vision distance, a solution is needed to form an optimal beam pattern by forming a hot spot area at a position specified by regulations.

[0006] [Prior art literature]

[0007] Patent Document 1: Korean Patent Publication No. 10-2021-0045730 (published on April 7, 2021) Utility Model Content

[0008] Technical issues

[0009] The technical problem to be solved by the utility model is to provide a vehicle lamp as follows: an area with the highest brightness in a beam pattern is formed at a predetermined position, thereby forming an optimal beam pattern capable of ensuring a sufficient field of view distance.

[0010] The technical problems of the present invention are not limited to the technical problems mentioned above, and those skilled in the art can clearly understand other technical problems not mentioned from the following description.

[0011] Technical Solution

[0012] In order to achieve the above technical problems, the vehicle lamp according to the embodiment of the utility model is a vehicle lamp that forms a light beam pattern by means of multiple lamp modules arranged along at least one direction, wherein each of the multiple lamp modules may include: a light source part; an optical path adjustment part, located in front of the light source part, guiding the path of the light generated from the light source part for adjustment; and a lens part, located in front of the optical path adjustment part, allowing the light guided by the optical path adjustment part to be transmitted to form the light beam pattern, wherein the lens part may include: a plurality of incident lenses; and a plurality of emission lenses, allowing the light incident to each of the plurality of incident lenses to be emitted.

[0013] The optical path adjustment unit may include: a first optical lens located in front of the light source unit; and a second optical lens located in front of the first optical lens.

[0014] In the first optical lens, an incident portion into which the light from the light source portion is incident may have a planar shape, and an exit portion from which the light incident from the incident portion is exited may have a shape convex toward the front.

[0015] The second optical lens may include: an incident portion into which the light emitted from the first optical lens is incident; and an emission portion into which the light incident on the incident portion is emitted, wherein the emission portion may include a plurality of emission surfaces.

[0016] The incident portion of the second optical lens may have a shape convex toward the rear.

[0017] The plurality of emission surfaces of the second optical lens may have a shape inclined downward toward the front.

[0018] The light emitted from the plurality of emission surfaces of the second optical lens may travel obliquely downward toward the front.

[0019] A center of a first exit surface among the plurality of exit surfaces of the second optical lens may be spaced apart from centers of a first entrance lens and a first exit lens corresponding to the first exit surface among the plurality of entrance lenses and the plurality of exit lenses in a vertical direction.

[0020] Centers of the first incident lens and the first exit lens may be located at a lower side than a center of the first exit surface.

[0021] A center of the first incident lens and a center of the first exit lens may be spaced apart from each other in an up-and-down direction.

[0022] A center of the first exit lens may be located at a lower side than a center of the first incident lens.

[0023] The lens unit may further include: a transmission unit that transmits light incident on each of the plurality of incident lenses to the plurality of emission lenses, wherein the transmission unit may include: a plurality of shielding surfaces, a front end of which is located at a rear focus of each of the plurality of emission lenses.

[0024] Details of other embodiments are included in the detailed description and drawings.

[0025] Technical Effects

[0026] According to the vehicle lamp of the present invention as described above, one or more of the following effects are achieved.

[0027] Since the light emitted from the optical path adjustment part is emitted downwardly and obliquely toward the front, the light with the highest brightness generated at the center of the light-emitting surface of at least one light source is concentrated at the rear focal point of the emission lens to form a hot spot area of ​​the light beam pattern. Therefore, the hot spot area is formed at the position specified by regulations, thereby having the effect of ensuring the field of view distance.

[0028] The effects of the present invention are not limited to the effects mentioned above, and those skilled in the art can clearly understand other technical effects that have not been mentioned through the records in the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 and Figure 2 2 is a perspective view showing a vehicle lamp according to an embodiment of the present invention.

[0030] Figure 3 and Figure 4 is a perspective view showing a lamp module according to an embodiment of the present utility model.

[0031] Figure 5 2 is a perspective view showing a lens portion according to an embodiment of the present invention.

[0032] Figure 6 yes Figure 4 A-A' line cross-section diagram.

[0033] Figure 7 1 is a schematic diagram showing the central position of each of an exit surface, an incident lens, and an exit lens corresponding to each other according to an embodiment of the present invention.

[0034] Figure 8 3 is a schematic diagram showing light distribution characteristics of a beam pattern formed according to a direction in which light is incident on an incident lens according to an embodiment of the present invention.

[0035] Description of Reference Numerals

[0036] 1000: lamp module 1100: light source unit

[0037] 1200: optical path adjustment unit 1210: first optical lens

[0038] 1211: Incident part 1212: Emission part

[0039] 1220: Second optical lens 1221: Incident portion

[0040] 1222: Injection portion 1222a: Injection surface

[0041] 1300: Lens unit 1310: Incident lens

[0042] 1320: Emission lens 1330: Transmission unit

[0043] 1331: Shielding surface DETAILED DESCRIPTION

[0044] The advantages and features of the present invention and the methods for achieving these can be clearly understood by referring to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in various forms that are different from each other and is not limited to the embodiments disclosed below. The present embodiments are provided only to complete the disclosure of the present invention and to fully inform the scope of the present invention to those skilled in the art of the present invention. The present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0045] Therefore, in some embodiments, in order to avoid vague interpretation of the present invention, well-known process steps, well-known structures and well-known technologies are not described in detail.

[0046] The terms used in this specification are used to illustrate the embodiments and are not intended to limit the utility model. In this specification, unless otherwise specified, the singular also includes the plural in the sentence. The terms "comprises" and / or "comprising" used in the specification mean that the existence or addition of one or more other constituent elements, steps, operations and / or elements other than the mentioned constituent elements, steps, operations and / or elements are not excluded. In addition, "and / or" includes each of the mentioned items and one or more combinations thereof.

[0047] Furthermore, the embodiments described in this specification will be described with reference to the cross-sectional views and / or schematic diagrams which are idealized examples of the present invention. Therefore, the morphology of the example diagrams may be deformed according to the manufacturing technology and / or allowable errors. Therefore, the embodiments of the present invention are not limited to the specific morphology shown in the diagrams, and changes in morphology generated according to the manufacturing process are also included. Moreover, in each of the drawings shown in the present invention, each component may be enlarged or reduced to some extent for the convenience of description. Throughout the specification, the same figure numbers refer to the same components.

[0048] Hereinafter, the present invention will be described based on the embodiments of the present invention with reference to the accompanying drawings for describing the vehicle lamp.

[0049] Figure 1 and Figure 2 2 is a perspective view showing a vehicle lamp according to an embodiment of the present invention.

[0050] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, the vehicle lamp 1 may include a plurality of lamp modules 1000 arranged along at least one direction.

[0051] In the embodiment of the present invention, the case where multiple lamp modules 1000 are arranged in the vertical direction is used as an example for explanation, but this is only an example to help understand the present invention and is not limited to this. According to the layout or design reasons of the vehicle lamp 1 of the present invention, the arrangement direction and quantity of the multiple lamp modules 1000 can be changed in many ways.

[0052] Furthermore, in an embodiment of the utility model, the vehicle lamp 1 is described using the following situation as an example: when a vehicle is traveling at night or in a dark place such as a tunnel, a headlamp is used to irradiate light in the direction of travel of the vehicle to ensure the vehicle's forward field of vision, but it is not limited to this. According to the utility model, the vehicle lamp 1 can be used not only as a headlamp, but also as various lamps arranged in the vehicle, such as tail lights, brake lights, turn signal lights, daytime running lights, backup lights and fog lights.

[0053] When the vehicle lamp 1 of the present invention is used as a headlamp, a low beam pattern or a high beam pattern can be formed. In order to prevent dazzling the driver of a vehicle in front, such as a leading vehicle or an oncoming vehicle, the low beam pattern irradiates light downward with the cut-off line as a reference to ensure a wide field of view in the short distance in front of the vehicle. The high beam pattern ensures a long field of view in the long distance in front of the vehicle. When the high beam pattern is formed, a low beam pattern is also formed to ensure a wide field of view and a long field of view in front of the vehicle.

[0054] In the following, in the embodiments of the present invention, the case where a low beam pattern is formed by the vehicle lamp 1 of the present invention will be described as an example, and the following case will be described as an example: the X-axis direction is the left-right direction, indicating the vehicle width direction, the Y-axis direction is the front-back direction, indicating the driving direction, and the Z-axis is the up-down direction, indicating the vehicle height direction.

[0055] In the case of forming a low-beam beam pattern by means of a plurality of lamp modules 1000, sub-beam patterns having the same light distribution characteristics of light from each of the plurality of lamp modules 1000 may overlap with each other to form a low-beam beam pattern, and in the plurality of lamp modules 1000, sub-beam patterns having different light distribution characteristics formed respectively by different lamp modules may be synthesized with each other to form a low-beam beam pattern.

[0056] At this time, the light distribution characteristics may include the position, brightness, shape, size, etc. of the light irradiated area, and in multiple lamp modules 1000, sub-beam patterns with different light distribution characteristics formed by different lamp modules can be understood as forming at least one sub-beam pattern that is different from each other in the position, brightness, shape, and size of the light irradiated area.

[0057] Figure 3 and Figure 4 is a perspective view showing a lamp module according to an embodiment of the present utility model, Figure 5 is a perspective view showing a lens portion according to an embodiment of the present utility model, Figure 6 yes Figure 4 A-A' line profile, Figures 3 to 6 It shows the above Figure 1 and Figure 2 This is an example of a case where one of the plurality of lamp modules 1000 is shown, and other lamp modules may also be similarly applied.

[0058] Reference Figures 3 to 6 According to the embodiment of the present invention, the lamp module 1000 may include a light source part 1100 , an optical path adjustment part 1200 and a lens part 1300 .

[0059] The light source unit 1100 may include at least one light source that generates light of a quantity or color suitable for the purpose of the lamp module 1000 of the present invention. In an embodiment of the present invention, a semiconductor light-emitting element such as a light-emitting diode (LED: Light Emitting Diode) is used as an example for explanation, but it is not limited to this. Not only LEDs but also various types of light sources such as laser diodes (LD: Laser Diode) or light bulbs can be used for the at least one light source, and optical elements such as reflectors, mirrors, phosphors, etc. can be additionally provided depending on the type of light source.

[0060] The optical path adjustment unit 1200 may be located in front of the light source unit 1100 , thereby adjusting the path of light so that the light emitted from the light source unit 1100 travels along an appropriate path.

[0061] At this time, the optical path adjustment unit 1200 is located in front of the light source unit 1100, which is an example of assuming that the direction of light irradiated from the vehicle lamp 1 of the present invention is the front. Depending on the setting position or direction of the vehicle lamp 1 of the present invention, the actual direction represented by the front may be different.

[0062] In an embodiment of the utility model, the case where the optical path adjustment unit 1200 includes a first optical lens 1210 located in front of the light source unit 1100 and a second optical lens 1220 located in front of the first optical lens 1210 will be described as an example, but this is only an example to help understand the utility model. In the case where the light path through the first optical lens 1210 and the second optical lens 1220 can be realized by using one optical lens, the optical path adjustment unit 1200 may include one optical lens, and may also include more than three optical lenses depending on the situation.

[0063] In the first optical lens 1210 , the incident portion 1211 may have a planar shape, and the emitting portion 1212 may have a shape convex toward the front, and the first optical lens 1210 may play a role of condensing the light generated from the light source portion 1100 .

[0064] In the second optical lens 1220, the incident portion 1221 may have a shape convex toward the rear so as to be able to gather the light emitted from the first optical lens 1210, and the emission portion 1222 may include a plurality of emission surfaces 1222a, and the plurality of emission surfaces 1222a may be formed as a whole to have a plane, a curved surface, or a combination thereof that is formed in a shape that is inclined downward toward the front, thereby enabling the light incident into the incident portion 1221 to be emitted in a shape that is inclined downward toward the front.

[0065] In the embodiment of the present invention, the following case is used as an example for explanation: the light generated from the light source unit 1100 is firstly collected by the first optical lens 1210, and secondly collected by the second optical lens 1220, and the path of the light is adjusted to be emitted in a downwardly inclined manner toward the front. However, the present invention is not limited thereto, and in the case where the focusing and the path of the light can be adjusted by adjusting the curvature of one of the first optical lens 1210 and the second optical lens 1220, the other of the first optical lens 1210 and the second optical lens 1220 can be omitted.

[0066] In an embodiment of the utility model, light is emitted downwardly and obliquely toward the front by the second optical lens 1220 in order to ensure a sufficient field of view distance so as to form an area with the highest brightness (i.e., a hot spot area) near the center of the cut-off line of the low beam pattern and at the position specified by regulations, and a detailed description of this will be described later.

[0067] The lens unit 1300 may include: a plurality of incident lenses 1310 for incident light guided by the optical path adjustment unit 1200; a plurality of emission lenses 1320 for emitting light incident on each of the plurality of incident lenses 1310; and a transmission unit 1330 for transmitting at least a portion of the light incident on the plurality of incident lenses 1310 to the plurality of emission lenses 1320.

[0068] At this time, the transfer portion 1330 may include a plurality of shielding surfaces 1331 whose front ends are located at the rear focus F of each of the plurality of emission lenses 1320 , and the rear end of each of the plurality of shielding surfaces 1331 may be formed to be connected to the lower end of each of the plurality of incident lenses 1310 .

[0069] The front end of each of the multiple shielding surfaces 1331 is located at the rear focus F of each of the multiple emission lenses 1320. It should be understood that: in order to prevent the light incident on each of the multiple input lenses 1310 from being transmitted to the corresponding emission lens through the lower space of the corresponding emission lens in the multiple emission lenses 1320 based on the rear focus F, thereby blocking the light from irradiating to the upper side of the cut-off line.

[0070] In other words, when light incident on each of the multiple incident lenses 1310 is transmitted to the corresponding emission lens through the lower space of the corresponding emission lens among the multiple emission lenses 1320 with the rear focus F as the reference and is emitted, the light is refracted relatively toward the upper side with the rear focus F as the reference and emitted, so that the light is irradiated to the upper side of the cut-off line, which may cause dazzling to the driver of the vehicle in front. Therefore, the front end of each of the multiple shielding surfaces 1331 is located at the rear focus F of each of the multiple emission lenses 1320.

[0071] At this time, the rear focus F of each of the plurality of emission lenses 1320 may have a shape of a point, a line, a surface, a space, or a combination thereof according to an area where light is substantially focused.

[0072] In addition, as described above, the corresponding emission surfaces, incident lenses and centers of the emission lenses in the multiple emission surfaces 1222a, the multiple incident lenses 1310 and the multiple emission lenses 1320 can be arranged in a manner separated in the up and down directions, so that the light emitted from the optical path adjustment portion 1200 can be emitted obliquely downward toward the front, the light emitted from the optical path adjustment portion 1200 obliquely downward toward the front can be incident on the multiple incident lenses 1310, and the light incident on each of the multiple incident lenses 1310 can be emitted through the multiple emission lenses 1320.

[0073] For example, Figure 7 As shown, when the corresponding emission surfaces, incident lenses and emission lenses among the multiple emission surfaces 1222a, the multiple incident lenses 1310 and the multiple emission lenses 1320 are respectively referred to as the first emission surface 1222a', the first incident lens 1311 and the first emission lens 1321, the center C2 of the first incident lens 1311 and the center C3 of the first emission lens 1321 are located on the lower side relative to the center C1 of the first emission surface 1222a', and the center C3 of the first emission lens 1321 is located on the lower side relative to the center C2 of the first incident lens 1311.

[0074] At this time, Figure 7 In the figure, the center C1, C2, C3 of each of the first emission surface 1222a', the first incident lens 1311 and the first emission lens 1321 can be understood as the center along the up-down direction.

[0075] As described above, the centers of the corresponding emission surfaces, incident lenses and emission lenses among the multiple emission surfaces 1222a, the multiple incident lenses 1310 and the multiple emission lenses 1320 are separated in the up and down directions in order to make the light with the highest brightness generated at the center of at least one light-emitting surface be concentrated at the rear focus F of the emission lens or its vicinity, so that the area at the position specified by the regulations near the lower side of the center of the cut-off line has the highest brightness.

[0076] That is, at least one light source has a light-emitting surface of a substantially predetermined size, and a propagation surface for propagating light generated from at least one light source also has a size corresponding to the light-emitting surface. In this case, since the light with the highest brightness generated at the center of the light-emitting surface passes through the center of the propagation surface, the light emitted from the optical path adjustment portion 1200 is emitted forward and downward at an angle, so that the light passing through the center of the propagation surface is focused on the rear focus F of the emission lens, and the centers of the corresponding emission surfaces, incident lenses and emission lenses in the multiple emission surfaces 1222a, the multiple incident lenses 1310 and the multiple emission lenses 1320 are spaced apart in the up and down directions.

[0077] In other words, Figure 8 As shown, in the case where light is emitted horizontally from the optical path adjustment portion 1200, the light Lc with the highest brightness passing through the center of the propagation surface PA corresponding to the light-emitting surface also travels horizontally. In this case, since the light Lc with the highest brightness is transmitted through the upper space of the rear focus F of the emission lens 1320, the light Lc with the highest brightness is refracted relatively downward and emitted. As a result, at the lower side near the center of the cut-off line CL, the area S' relatively located further downward has the highest brightness compared to the area S specified by the regulations, making it difficult to ensure a sufficient field of view distance. On the contrary, in an embodiment of the utility model, since light is emitted from the optical path adjustment portion 1200 at an angle downward toward the front, the light Lc with the highest brightness passing through the center of the propagation surface PA corresponding to the light-emitting surface is gathered at the rear focus F of the emission lens 1320 or near it and emitted, so that the area S specified by the regulations can have the highest brightness, thereby ensuring a sufficient field of view distance.

[0078] As described above, according to the embodiment of the utility model, the vehicle lamp 1 makes the light be emitted from the optical path adjustment part 1200 in a downward and forward direction, and at the same time, the centers of each of the corresponding emission surfaces 1222a, the multiple incident lenses 1310 and the multiple emission lenses 1320 are set to be separated in the up and down directions, so that the light with the highest brightness generated from the center of the light-emitting surface among the light generated by at least one light source is irradiated on the hot spot area specified by the regulations, thereby ensuring a sufficient field of view distance.

[0079] Those with basic knowledge in the technical field to which the utility model belongs must understand that the utility model can be implemented in other specific forms without changing the technical ideas or essential features. Therefore, the embodiments described above are exemplary in all aspects and should be understood as non-limiting embodiments. The scope of the utility model is not limited by the aforementioned detailed description, but by the claims, and all changes or deformations that can be derived from the meaning, scope and equivalent concepts of the claims should be interpreted as being included in the scope of the utility model.

Claims

1. A vehicle lamp, as a vehicle lamp that forms a beam pattern by means of a plurality of lamp modules arranged in at least one direction, characterized in that: Each of the plurality of lamp modules comprises: Light source department; an optical path adjustment portion, located in front of the light source portion, guiding the path of the light generated from the light source portion for adjustment; and a lens portion, located in front of the optical path adjusting portion, for transmitting the light guided by the optical path adjusting portion to form the beam pattern; Wherein, the lens portion comprises: a plurality of input lenses; and The plurality of emission lenses emit light incident on each of the plurality of incident lenses.

2. The vehicle lamp according to claim 1, characterized in that: The optical path adjustment unit comprises: A first optical lens is located in front of the light source; and The second optical lens is located in front of the first optical lens.

3. The vehicle lamp according to claim 2, characterized in that: In the first optical lens, an incident portion into which light from the light source portion is incident has a planar shape, and an emitting portion from which light incident from the incident portion is emitted has a shape convex toward the front.

4. The vehicle lamp according to claim 2, characterized in that: The second optical lens comprises: an incident portion for incident light emitted from the first optical lens; and an emitting portion for emitting light incident on the incident portion, Wherein, the emitting portion includes a plurality of emitting surfaces.

5. The vehicle lamp according to claim 4, characterized in that: The incident portion of the second optical lens has a shape that is convex toward the rear.

6. The vehicle lamp according to claim 4, characterized in that: The plurality of emission surfaces of the second optical lens have a shape inclined downward toward the front.

7. The vehicle lamp according to claim 4, characterized in that: The light emitted from the plurality of emission surfaces of the second optical lens travels obliquely downward toward the front.

8. The vehicle lamp according to claim 4, characterized in that: A center of a first exit surface among the plurality of exit surfaces of the second optical lens is spaced apart from centers of a first entrance lens and a first exit lens corresponding to the first exit surface among the plurality of entrance lenses and the plurality of exit lenses in a vertical direction.

9. The vehicle lamp according to claim 8, characterized in that: Centers of the first incident lens and the first exit lens are located below a center of the first exit surface.

10. The vehicle lamp according to claim 8, characterized in that: A center of the first incident lens and a center of the first exit lens are spaced apart from each other in a vertical direction.

11. The vehicle lamp according to claim 10, characterized in that: The center of the first output lens is located below the center of the first input lens.

12. The vehicle lamp according to claim 1, characterized in that: The lens portion further includes: a transmission unit that transmits light incident on each of the plurality of incident lenses to the plurality of emission lenses, Wherein, the transmission unit comprises: A plurality of shielding surfaces have their front ends located at the rear focal points of each of the plurality of emission lenses.

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