Lamp for vehicle

Abstract

A lamp for a vehicle is disclosed, comprising a lamp housing part with an interior configured to receive a light source, an outer lens part coupled to a side of the lamp housing part and configured to cover the interior, a vibrating element attached to the outer lens part, and a cover element provided on a side of the vibrating element and having at least a partial area that is configured to face the outer lens part, the vibrating element being inserted between them, the vibrating element comprising a polarized piezoelectric element and a first electrode and a second electrode configured to face two opposite sides based on the direction in which the piezoelectric element is polarized, the piezoelectric element emitting a tone.by causing it to vibrate through a change in the voltage applied to the first and second electrodes over time, and wherein the cover element has one or more vibration-reducing holes.

Description

Cross-reference to related registration

[0001] This application claims the priority and benefits of Korean patent application No. 10-2024-0107833, which was filed with the Korean Intellectual Property Office on August 12, 2024, and the entire contents of which are hereby incorporated by reference. Technical field

[0002] The present disclosure relates to a lamp for a vehicle and in particular to a lamp for a vehicle that can emit a sound. State of the art

[0003] Recently, due to the increasing demand for entertainment features in addition to the transportation functions that vehicles require, there has been a growing need for lamps installed in vehicles that offer additional features beyond simple lighting. For example, a car lamp now also includes a function that enables communication with the outside world.

[0004] In the prior art, a vehicle lamp fulfills the function of communicating with the outside world by means of visual information, such as light patterns or light distribution patterns. However, the methods for performing this communication function include, in addition to the method using visual information, a method using acoustic information, such as sounds. Since the vehicle lamp in the prior art adopts a waterproof structure to prevent moisture accumulation, it is difficult to integrate a loudspeaker capable of emitting sound into the lamp. Summary

[0005] The present disclosure was made in an effort to add a function to a lamp for a vehicle which is capable of emitting a sound without affecting the performance of the lamp for a vehicle.

[0006] To achieve the above-mentioned objective, one aspect of the present disclosure provides a lamp for a vehicle, the lamp comprising: a lamp housing part with an interior configured to receive a light source; an outer lens part coupled to one side of the lamp housing part and configured to cover the interior; a vibration part attached to the outer lens part;and a cover element provided on one side of the vibrating part and having at least a partial area that is designed to face the outer lens part, the vibrating part being inserted between them, the vibrating part comprising: a polarized piezoelectric element and a first electrode and a second electrode designed to face two opposite sides based on the direction in which the piezoelectric element is polarized, the piezoelectric element emitting a tone by being set into vibration by a temporal change in the voltage applied to the first electrode and the second electrode, and the cover element having one or more vibration-reducing holes.

[0007] The lamp may comprise: a cover coupling element, one side of which is attached to the outer lens part, so that the cover element is coupled to the cover coupling element; and the cover element may further comprise: a cover body designed to face the outer lens part, with the vibration element inserted between them, the cover body being designed to be spaced apart from the vibration element; and cover extension areas projecting from two opposite sides of the cover body towards a cover coupling element, and the vibration reduction hole may be formed in the cover body.

[0008] The vibration reduction hole can be provided as a plurality of vibration reduction holes, and at least some of the plurality of vibration reduction holes can be arranged such that they are spaced apart from each other in a direction parallel to a direction in which the cover extension areas formed on the two opposite sides of the cover body are oriented towards each other.

[0009] The cover element may further include a cover rib that projects from the cover body towards the vibrating part and is designed to be firmly connected to the vibrating part.

[0010] A direction in which the cover extension areas formed on the two opposite sides of the cover body face each other can be parallel to a direction in which the cover rib extends.

[0011] The cover rib can be provided as a plurality of cover ribs spaced apart from each other in a direction that intersects a direction in which the cover extension areas formed on the two opposite sides of the cover body face each other.

[0012] The cover extension area has a first through-hole, and the cover coupling element comprises: a coupling body attached to one side of the outer lens part; and a coupling extension area projecting from an edge region of the coupling body towards the cover element, having a second through-hole formed in a region corresponding to the first through-hole.

[0013] The cover body can be designed to face both opposite edge regions of the piezoelectric element based on an extension direction of the piezoelectric element and a central region of the extension direction.

[0014] The vibration reduction holes can be formed in areas of the cover body that face the two opposite edge regions of the piezoelectric element based on the direction of extension and the central region of the direction of extension.

[0015] The cover element can be provided as a plurality of cover elements spaced apart from each other.

[0016] The cover element can be provided as two cover elements, and the two cover elements can be provided such that they face each other, with a central area of ​​the coupling body inserted between them.

[0017] The majority of cover elements can be identical insofar as the majority of the cover elements are interchangeable.

[0018] The first through-hole and the second through-hole can each have a circular shape.

[0019] The width of the first through-hole in a first direction D1 can differ from the width of the first through-hole in a second direction D2 that intersects the first direction D1.

[0020] The size of the first through-hole and the size of the second through-hole can be different.

[0021] The first direction D1 can be a direction parallel to a direction in which the piezoelectric element faces the outer part of the lens, and the width of the first through-hole in the first direction D1 can be greater than the width of the first through-hole in the second direction D2.

[0022] The second direction D2 can be a direction parallel to a direction that intersects the first direction D1 perpendicularly, and the width of the second through-hole in the second direction D2 can be equal to the width of the first through-hole in the second direction D2.

[0023] The coupling element can be inserted into the outer lens.

[0024] The size of the vibration reduction hole can be smaller than the size of the first through-hole.

[0025] The vibration reduction hole can be spaced away from the cover rib.

[0026] According to the present disclosure, it is possible to add to a vehicle light the function that is able to emit a sound without affecting the performance of the vehicle light. Brief description of the drawings Fig. Figure 1 is a view showing a condition in which an outer lens part is spaced apart from a lamp housing part and a lamp aperture part in a lamp for a vehicle according to an example of the present disclosure. Fig. Figure 2 is a cross-sectional view of a vibrating part of the lamp for a vehicle according to the present disclosure, i.e. a view illustrating a state before current is supplied to an electrode. Fig. Figure 3 is a cross-sectional view of the vibrating part of the lamp for a vehicle according to the present disclosure, i.e. a view illustrating a state that is achieved after applying current to the electrode. Fig. Figure 4 is a cross-sectional view of the vibrating part of the lamp for a vehicle according to the present disclosure, i.e., a view illustrating a different state after current has been supplied to the electrode. Fig. Figure 5 is a cross-sectional view showing a state in which a vibrating part is attached by means of a connecting element to a curved surface area of ​​an outer lens part in a lamp for a vehicle according to a first embodiment of the present disclosure. Fig. Figure 6 is a cross-sectional view showing a state in which a vibrating part is attached by means of a connecting element to a curved surface area of ​​an outer lens part in a lamp for a vehicle according to a second embodiment of the present disclosure. Fig. Figure 7 is a cross-sectional view showing a state in which a vibrating part is attached by means of a connecting element to a curved surface area of ​​an outer lens part in a lamp for a vehicle according to a third embodiment of the present disclosure. Fig. Figure 8 is a perspective view of a lamp for a vehicle according to a fourth embodiment of the present disclosure. Fig. Figure 9 is an enlarged perspective view showing a cover element made of Fig. 8 shows. Fig. Figure 10 is an enlarged cross-sectional view showing a vibrating part and the cover element made of Fig. 8 and its surrounding components. Fig. Figure 11 is a perspective view showing a state in which the cover element is made of Fig. 8 is away. Fig. Figure 12 is an enlarged view showing a state in which the vibration part, the cover element and a cover coupling element are made of Fig. 8 are coupled. Fig. Figure 13 is a perspective view of a lamp for a vehicle according to a fifth embodiment of the present disclosure. Fig. Figure 14 is an enlarged view showing a coupling structure between a cover element and a vibrating part. Fig. 13 shows. Fig. Figure 15 is an enlarged cross-sectional view showing the vibrating part and the cover element in Fig. 13 and its surrounding components. Fig. Figure 16 is a perspective view of a lamp for a vehicle according to a sixth embodiment of the present disclosure. Fig. Figure 17 is a perspective view of a cover element made of Fig. 16. Fig. Figure 18 is an enlarged view showing a state in which a vibrating part, the cover element and a cover coupling element are made of Fig. 16 are coupled. Fig. Figure 19 is an enlarged view showing a coupling structure between a vibration part, a cover element and a cover coupling element provided in a lamp for a vehicle according to a seventh embodiment of the present disclosure. Fig. Figure 20 is a view illustrating a coupling structure between the cover element and the cover coupling element. Fig. 19. Fig. 21 is an enlarged view showing the cover element. Fig. 19 shows. Fig. Figure 22 is a view showing a piezoelectric element of a vibrating part provided in a lamp for a vehicle according to an eighth embodiment of the present disclosure. Fig. 23 is a view showing a first example of an outer lens part, on which the in Fig. The vibrating part shown in section 22 is attached. Fig. 24 is a view showing a state in which the vibrating part is made of Fig. 22 with the outer lens part made of Fig. 23 is coupled. Fig. 25 is a view showing a second example of the outer lens part, where the in Fig. The vibrating part shown in section 22 is attached. Fig. 26 is a view showing a state in which the vibrating part is made of Fig. 22 with the outer lens part made of Fig. 25 is coupled. Detailed description

[0027] A lamp for a vehicle according to the present disclosure is described below with reference to the drawings. Lamp for vehicle

[0028] Fig. Figure 1 is a view showing a condition in which an outer lens part is spaced apart from a lamp housing part and a lamp holder part in a lamp for a vehicle according to an example of the present disclosure, and Fig. Figure 2 is a cross-sectional view of a vibrating part of the lamp for a vehicle according to the present disclosure, i.e. a view showing a state that is reached before current is supplied to an electrode. Fig. Figure 3 is a cross-sectional view of the vibrating part of the lamp for a vehicle according to the present disclosure, i.e., a view showing a state that is achieved after current is supplied to the electrode, and Fig. Figure 4 is a cross-sectional view of the vibrating part of the lamp for a vehicle according to the present disclosure, i.e., a view showing a different state after current is supplied to the electrode.

[0029] With reference to Fig. 1 and Fig. 2. A lamp 10 for a vehicle (hereinafter referred to as a "lamp") according to the present disclosure can comprise a lamp housing part 100 with an interior configured to receive a light source, and an outer lens part 200, which is connected to one side of the lamp housing part 100 and configured to cover the interior. In particular, the outer lens part 200 can be rigidly connected to the lamp housing part 100. The light emitted by the light source can propagate outwards through the outer lens part 200, so that predetermined light distribution patterns and light images can be formed.

[0030] According to the present disclosure, the lamp 10 can not only form predetermined light distribution patterns and light images, like the lamp in the related technology, but also produce a sound. In particular, according to the present disclosure, the lamp 10 can emit a sound by causing the lamp housing part 100 or the outer lens part 200 to vibrate.

[0031] To achieve the aforementioned goal, the lamp 10 according to the present disclosure can comprise a vibrating element 400 attached to the lamp housing part 100 or the outer lens part 200. The vibrating element 400 can be configured to emit a sound by vibrating the lamp housing part 100 or the outer lens part 200. For example, the vibrating element 400 can be configured as shown in Fig. 1 shown, attached to the outer lens part 200. Unlike the one in Fig. In the configuration shown in Figure 1, the vibrating element 400 can be attached to the lamp housing element 100. The vibrating element 400 can be housed within the interior formed in the lamp housing element 100.

[0032] With further reference to Fig. 1. According to the present disclosure, the lamp 10 can further comprise a lamp aperture part 300 which is rigidly connected on one side to the lamp housing part 100, wherein the lamp aperture part 300 is provided such that it faces at least partially towards the outer lens part 200. In particular, based on Fig. 1, an area of ​​the outer lens part 200 facing the lamp aperture part 300 if the outer lens part 200 is assembled with the lamp housing part 100.

[0033] However, according to the present disclosure, the vibrating part 400 of the lamp 10 can comprise a polarized piezoelectric element 410. That is, according to the present disclosure, the vibrating part 400 can comprise the piezoelectric element 410 in a polarized state in which one side is positively charged and the other side is negatively charged, unless a temperature reaches a Curie temperature or higher or exceeds a predetermined range and a blocking voltage is applied in a direction opposite to the direction of an electric field in the piezoelectric element. Any material can be used for the piezoelectric element 410 without restriction, as long as the material can be polarized. For example, the piezoelectric element 410 can be made of a ceramic material. However, in the present description, as in Fig. 2, Fig. 3 to Fig. Figure 4 shows a direction in which a positively charged region and a negatively charged region in the piezoelectric element 410 are facing each other, defined as a direction in which the piezoelectric element is polarized.

[0034] With further reference to Fig. 2, Fig. 3 to Fig. 4. According to the present disclosure, the lamp 10 can comprise a first electrode 421 and a second electrode 422, which are arranged such that, based on the direction in which the piezoelectric element 410 is polarized, they each face two opposite sides. That is to say, the first electrode 421 and the second electrode 422 can be arranged such that they each face or are in contact with the negatively charged region and the positively charged region in the piezoelectric element 410, respectively.

[0035] A process in which the lamp 10 emits a sound according to the present disclosure is described below. When current is supplied to the first electrode 421 and the second electrode 422 via a power supply section to be described below, the first electrode 421 and the second electrode 422 are charged. In particular, when alternating current is supplied to the first electrode 421 and the second electrode 422, the voltages of the first electrode 421 and the second electrode 422 vary over time. Therefore, according to the present disclosure, an electrical force exerted on the piezoelectric element 410 by the first electrode 421 and the second electrode 422 also varies over time, since the voltages applied to the first electrode 421 and the second electrode 422 vary over time, causing the piezoelectric element 410 to move in its longitudinal and transverse directions.The movements are converted into a vibration of the piezoelectric element 410, and the lamp housing part 100 or the outer lens part 200 is set into vibration by the vibration of the piezoelectric element 410, thereby emitting a sound. For example, as in . Fig. As shown in Figure 2, the first electrode 421 and the second electrode 422 are not electrified before current is applied to the first electrode 421 and the second electrode 422, so that no external force is exerted on the piezoelectric element 410. Then, as shown in Fig. Figure 3 shows that after an initial period of time has elapsed following the application of current to the first electrode 421 and the second electrode 422, the first electrode 421 and the second electrode 422 are each positively and negatively charged, respectively, causing the piezoelectric element 410 to expand in a thickness direction while absorbing forces in the direction of the first electrode 421 and the second electrode 422. Then, as in Fig. Figure 4 shows that if a second time interval elapses after current has been applied to the first electrode 421 and the second electrode 422, the first electrode 421 and the second electrode 422 are each negatively and positively charged, respectively, so that the piezoelectric element 410 expands in its thickness direction while absorbing forces in the direction of the first electrode 421 and the second electrode 422. The piezoelectric element 410 contracts in its thickness direction while absorbing forces in directions away from the first electrode 421 and the second electrode 422. The processes described in the figures then repeat. Fig. 2, Fig. 3 to Fig. 4 states shown, so that the piezoelectric element 410 vibrates.

[0036] With reference to Fig. 1. According to the present disclosure, the vibrating element 400 can, however, be provided in a position in the lamp 10 where it is protected from direct sunlight. In particular, the vibrating element 400 can be attached to an area of ​​the outer lens part 200 or the lamp housing part 100 where the transmittance to visible rays is low. For example, if, as in Fig. As shown in Figure 1, the vibrating element 400 is attached to the outer lens element 200. The outer lens element 200 can comprise a first outer lens area 210 with a transmittance for visible rays, i.e., a first transmittance, and a second outer lens area 220 with a transmittance for visible rays, i.e., a second transmittance, that is lower than the first transmittance. The vibrating element 400 can be attached to the second outer lens area 220. In this case, the effect of external light / radiation on the positive and / or negative charges within the vibrating element 400 can be minimized, resulting in higher acoustic quality when sound is emitted using the lamp. In contrast, if the vibrating element 400 is attached to the lamp housing element 100, it can be attached to a lower region of an inner surface of the lamp housing element 100.In this case, the sound generated by the vibration of the vibrating element 400 can propagate in a forward / backward direction through the underside of the lamp, i.e., the underside of the vehicle. Meanwhile, the piezoelectric element 410, which forms the vibrating element 400, can have a plate shape.

[0037] Fig. Figure 5 is a cross-sectional view showing a state in which a vibrating part is attached by means of a connecting element to a curved surface area of ​​an outer lens part in a lamp for a vehicle according to a first embodiment of the present disclosure.

[0038] With reference to Fig. 1 and Fig. 5. However, a curved surface area 202 can be formed on at least part of the outer lens part 200 to improve the aesthetic appearance of the lamp 10. For example, practically an entire area of ​​the outer lens part 200 can have a curved shape.

[0039] In this case, according to the present disclosure, the vibrating element 400 can be attached to the curved surface region 202. In particular, the vibrating element 400 can be connected to the outer lens part 200 by means of an adhesive material. In particular, the lamp 10 can further comprise a connecting element 500, which is provided between the outer lens part 200 and the vibrating element 400 and is configured to attach the vibrating element 400 to the outer lens part 200. A non-woven tape or the like can be used for the connecting element 500 to ensure rigidity against external impacts. The non-woven tape can have a thicker adhesive layer than a general double-sided adhesive tape, and the adhesive layer can act as a kind of cushion, thereby exhibiting excellent impact resistance.

[0040] The outer lens part 200 can, however, be subdivided into an outer and an inner section. In particular, the outer lens part 200 can be subdivided into an outer surface exposed to the outer surface of the lamp 10 and an inner surface facing an interior of the lamp 10. Therefore, an outer section can be formed on an outer surface of the curved surface region 202 formed on the outer lens part 200, and an inner section can be formed on an inner surface of the curved surface region 202. For example, as in Fig. Figure 5 shows that an outer curved surface section 202a, comprising a curved shape, is formed on the outer surface of the curved surface region 202, and an inner curved surface section 202b, comprising a curved shape, is formed on the inner surface of the curved surface region 202. In this case, according to the first embodiment of the present disclosure, the vibrating part 400 can be attached to the inner curved surface section 202b, and the connecting element 500 can be provided in an edge region of the vibrating part 400. In particular, according to the first embodiment of the present disclosure, the vibrating part 400 can have a flat shape, and the connecting element 500 can be provided in a region that excludes a central region of the vibrating part 400.Therefore, according to the first embodiment of the present disclosure, an empty space can be formed between the central region of the vibrating part 400 and the inner curved surface section 202b (see the arrow in . Fig. 5) As in the first embodiment of the present disclosure, the connecting element 500 can be provided only at the edge or side regions that exclude the central region of the vibrating part 400, so that the performance of the vibrating part 400 can be improved in a low frequency range if the empty space between the central region of the vibrating part 400 and the inner curved surface section 202b is formed.

[0041] Fig. Figure 6 is a cross-sectional view showing a state in which a vibrating element is attached by means of a connecting element to a curved surface region of an outer lens part in a lamp for a vehicle according to a second embodiment of the present disclosure. A difference from the first embodiment of the present disclosure, described above with reference to Fig. As described in section 5, this is mainly done with reference to Fig. 6 described above. The above with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. The content described in section 5 can be applied equally to the content, with the exception of the content referred to below. Fig. 6 will be described.

[0042] With reference to Fig. 6. The outer curved surface section 202a, which has a curved shape, can be formed on the outer surface of the curved surface area 202 of the outer lens part 200, while an inner flat surface section 202c, which has a flat shape, can be formed on the inner surface of the curved surface area 202. For example, the inner flat surface section 202c can be formed by additionally machining a portion of the curved surface section that is formed on the inner surface of the outer lens part 200. Once the inner flat surface section 202c is formed, the connecting element 500 can attach the vibratory part 400 to the inner flat surface section 202c with the entire surface of the connecting element, which can lead to an improvement in the stiffness of the structure of the outer lens part 200 with the vibratory part 400.

[0043] In this case, according to the second embodiment of the present disclosure, the vibrating part 400 can be attached to the inner flat surface section 202c. In this case, the connecting element 500 can be provided only at the edge or side regions of the vibrating part 400, without being provided at the central region of the vibrating part 400. In this case, similar to the first embodiment of the present disclosure, the performance of the vibrating part 400 can be improved in a low-frequency range. However, according to the second embodiment of the present disclosure, the vibrating part 400 can be attached to the outer lens part 200 by means of the inner flat surface section 202c, so that the performance can be further improved when the vibrating part 400 is attached to the outer lens part 200.

[0044] Fig. Figure 7 is a cross-sectional view showing a state in which a vibrating part is attached by means of a connecting element to a curved surface area of ​​an outer lens part in a lamp for a vehicle according to a third embodiment of the present disclosure.

[0045] As in the second embodiment of the present disclosure, the outer curved surface section 202a and the inner flat surface section 202c can also be formed on the curved surface area 202 according to the third embodiment of the present disclosure. However, according to the third embodiment of the present disclosure, the connecting element 500 can be provided at the edge or side regions as well as at the central region of the vibrating part 400.

[0046] The second embodiment can be applied to a portion of the inner flat surface section 202c, and the third embodiment can be applied to another portion of the inner flat surface section 202c. In this case, the performance of the vibrating element 400 in the low-frequency range can be improved by the area applied in the second embodiment, and at the same time, the vibration transmission performance of the vibrating element 400 can be improved by the area applied in the third embodiment, and accordingly, a more stable tone can be generated by the lamp for the vehicle.

[0047] However, as described above, the outer lens part 200 can, depending on the transmittance for visible rays, comprise the first outer lens area 210 and the second outer lens area 220, and the curved surface area 202 can be formed on the second outer lens area 220.

[0048] Fig. Figure 8 is a perspective view of a lamp for a vehicle according to a fourth embodiment of the present disclosure, and Fig. Figure 9 is an enlarged perspective view showing a cover element made of Fig. 8 shows. Fig. Figure 10 is an enlarged cross-sectional view showing a vibrating part and the cover element made of Fig. 8 and its surrounding components, and Fig. Figure 11 is a perspective view showing a state in which the cover element is made of Fig. 8 is away. Fig. Figure 12 is an enlarged view showing a state in which the vibration part, the cover element and a cover coupling element are made of Fig. 8 are coupled.

[0049] The lamp 10 according to the fourth embodiment of the present disclosure can also comprise the lamp housing part, the outer lens part, and the vibration part. However, the lamp 10 according to the fourth embodiment of the present disclosure can, in addition to the components mentioned above, comprise a component configured to cover the vibration part.

[0050] In particular, according to the present disclosure, the lamp 10 can further comprise the lamp housing part 100 with the interior for receiving the light source, the outer lens part 200, which is connected to one side of the lamp housing part 100 and is configured to cover the interior, the vibrating part 400, which is attached to the outer lens part 200, and a cover element 600, which is provided on one side of the vibrating part 400 and has at least a partial area that is configured to face the outer lens part 200, with the vibrating part 400 inserted between them. The cover element 600 can be configured to attach the vibrating part 400 to the outer lens part 200, either alone or together with the connecting element 500.For this purpose, at least a part of an area of ​​the cover element 600, which faces the outer lens part 200, with the vibration part 400 inserted between them, can be provided such that it is firmly attached to the vibration part 400.

[0051] However, according to the present disclosure, an additional means can be provided to minimize an area of ​​the cover element 600 that presses on the vibrating part 400, thereby preventing the cover element 600 from absorbing the vibration of the vibrating part 400 when the vibrating part 400 vibrates to produce a sound.

[0052] In particular, the cover element 600, as shown in Fig. 9 and Fig. Figure 10 shows a cover body 610, which is positioned facing the outer lens part 200, with the vibrating part 400 inserted between them. The cover body 610 is positioned spaced apart from the vibrating part 400 and comprises cover ribs 620 that project from the cover body 610 towards the vibrating part 400 and are fixedly attached to the vibrating part 400. The cover body 610 can be plate-shaped, and the cover rib 620 can have a shape that projects from a portion of the plate-shaped structure towards the vibrating part 400. That is, the vibrating part 400 can be attached to the outer lens part 200 by being supported by the cover rib 620. The cover ribs 620 can be used to control the vibration of the vibrating part 400.For example, the amount of pressure exerted by the cover ribs 620 to support the vibrating part 400, and / or the position and / or placement of the cover ribs 620, can control the intensity and / or waveform of the vibrations of the vibrating part 400. Accordingly, the cover ribs 620 can precisely control the vibration of the vibrating part 400, enabling the outer lens part 200 to produce a more accurate sound. For example, the cover rib 620 can have a rod structure with a straight shape.

[0053] However, according to the fourth embodiment of the present disclosure, the lamp 10 can additionally comprise a component, one side of which is attached to the outer lens part 200, so that the cover element 600 is coupled to the component. In particular, according to the present disclosure, the lamp 10 can, as shown in the Fig. 8, Fig. 9, Fig. 10, Fig. 11 to Fig. Figure 12 further comprises a cover coupling element 700, one side of which is attached to the outer lens part 200, so that the cover element 600 is coupled to the cover coupling element 700. In this case, the cover element 600 can additionally comprise cover extension areas 630 that project from two opposite sides of the cover body 610 towards the cover coupling element 700 and have first through-holes 630a. Furthermore, the cover coupling element 700 can comprise a coupling body 710 that is attached to one side of the outer lens part 200 and coupling extension areas 720 that project from an edge region of the coupling body 710 towards the cover element and have second through-holes formed in areas corresponding to the first through-holes.

[0054] The cover element 600 and the cover coupling element 700 can be rigidly coupled to each other at the cover extension areas 630 and the coupling extension areas 720. In particular, the lamp 10 according to the present disclosure can further comprise penetration elements 800 which are configured to penetrate the first through-holes 630a of the cover extension areas 630 and the second through-holes 720a of the coupling extension areas 720. For example, the penetration element 800 can be coupled to the first through-hole 630a and the second through-hole 720a by a bolt nut.

[0055] However, according to the fourth embodiment of the present disclosure, the cover ribs 620 can be provided as a plurality of cover ribs 620. In particular, a direction in which the cover extension areas 630 provided on the two opposite sides of the cover body 610 face each other can be parallel to a direction in which the cover rib 620 extends. The plurality of cover ribs 620 can be provided such that they are spaced apart from each other in a direction that intersects the direction in which the cover extension areas 630 formed on the two opposite sides of the cover body 610 face each other. For example, Figure 1 shows Fig. 9 a state in which the cover element 600 has two cover ribs 620.

[0056] However, according to the present disclosure, a part of the cover coupling element 700 can be inserted into the outer lens part 200. In particular, as shown in Fig. As shown in Figure 11, the coupling body 710 is inserted into the outer lens part 200. The configuration of the cover element 600 and the cover coupling element 700 can facilitate easier replacement of the vibration element 400, which can reduce the costs of managing / maintaining the vibration element in the luminaire for a vehicle.

[0057] Fig. Figure 13 is a perspective view of a lamp for a vehicle according to a fifth embodiment of the present disclosure, and Fig. Figure 14 is an enlarged view showing a coupling structure between a cover element and a vibrating part. Fig. 13 shows. Fig. Figure 15 is an enlarged cross-sectional view showing the vibrating part and the cover element. Fig. 13 and its surrounding components.

[0058] The contents of the lamps according to the first to fourth embodiments of this disclosure can be applied equally to the lamp 10 according to the fifth embodiment of this disclosure. However, the fifth embodiment of this disclosure differs from the embodiments mentioned above in that the cover element 600 may additionally include a component for reducing the vibration of the cover element 600.

[0059] As in the Fig. 13, Fig. 14 to Fig. As shown in Figure 15, one or more vibration-reducing holes 610a can be formed in the cover element 600. In particular, the vibration-reducing holes 610a can be provided as a plurality of vibration-reducing holes 610a. The vibration-reducing holes 610a can be configured to minimize the vibration energy transmitted from the vibrating part 400 to the cover element 600. Furthermore, the vibration-reducing holes 610a can also serve to eliminate the vibration energy transmitted to the cover element 600 without distributing it. For example, the vibration-reducing holes 610a can be formed in the cover body 610 of the cover element 600.

[0060] As described above, the vibration reduction holes 610a can be provided as a plurality of vibration reduction holes 610a. In this case, as described in Fig. 13 and Fig. 14 shown, at least some of the majority of vibration reduction holes 610a are arranged such that they are spaced apart from each other in a direction parallel to the direction in which the cover extension areas 630 formed on the two opposite sides of the cover body 610 are oriented towards each other. Fig. 13 and Fig. Figure 14 shows that six groups are provided, each comprising four vibration reduction holes 610a, arranged such that they are spaced apart from each other in the direction parallel to the direction in which the cover extension areas 630 face each other.

[0061] With further reference to Fig. 13. The cover body 610, which is provided in the cover element 600 of the lamp 10 according to the fifth embodiment of the present disclosure, can be designed such that it faces both opposite edge regions of the piezoelectric element 410 based on a direction of extension of the piezoelectric element 410 and the central region of the piezoelectric element 410 based on the direction of extension. In particular, the cover body 610 can be designed such that it surrounds an entire region of the piezoelectric element 410. In this case, the vibration-reducing holes 610a can be formed in regions of the cover body 610 that face both opposite edge regions of the piezoelectric element 410 based on the direction of extension and the central region of the piezoelectric element 410 based on the direction of extension. Fig. 13 and Fig. Figure 14 illustrates that in each of the areas of the cover body 610 facing the two opposing edge areas and the central area of ​​the piezoelectric element 410, two vibration reduction hole groups with four vibration reduction holes 610a each are formed.

[0062] Fig. Figure 16 is a perspective view of a lamp for a vehicle according to a sixth embodiment of the present disclosure, and Fig. Figure 17 is a perspective view of a cover element made of Fig. 16. Fig. Figure 18 is an enlarged view showing a state in which a vibrating part, the cover element and a cover coupling element are made of Fig. 16 are coupled.

[0063] The contents of the lamps according to the first to fourth embodiments of this disclosure can be applied equally to the lamp 10 according to the sixth embodiment of this disclosure. As in the fifth embodiment of this disclosure, the vibration-reducing holes 610a can be formed in the cover element 600. However, according to the sixth embodiment of this disclosure, the lamp 10 can have a plurality of cover elements 600.

[0064] That is, according to the sixth embodiment of the present disclosure, the plurality of cover elements 600 can be provided such that they are spaced apart from one another. For example, as in Fig. 16 and Fig. 17 shows that two cover elements 600 are provided, wherein the two cover elements 600 can be provided such that they face each other, with a central area of ​​the coupling body 710 of the cover coupling element 700 inserted between them.

[0065] In particular, the two cover elements 600 can be identical insofar as they are interchangeable. This configuration can be interpreted as one in which, although they do not have the exact same physical shape, the two cover elements 600 are identical insofar as they perform their functions when assembled after their positions have been swapped.

[0066] However, according to the fifth and sixth embodiments of the present disclosure, the size of each of the vibration-reducing holes 610a can be smaller than the size of the first through-hole 630a and the size of the second through-hole 720a. In this case, the height can be easily adjusted when assembling the cover elements 600, since the second through-hole 720a is larger than the first through-hole 630a. This has the technical effect that the cover ribs 620 can be pressed with constant pressure, even if the thickness of the piezoelectric element 410 varies.

[0067] Furthermore, as in Fig. As shown in Figure 15, the vibration-reducing holes 610a are provided such that they are spaced apart from the cover ribs 620. It is understood that the vibration-reducing hole 610a is not formed in a region of the cover body 610 into which the cover ribs 620 extend.

[0068] However, according to the fourth to sixth embodiments of the present disclosure, the size of the first through-hole 630a, which is formed in the cover extension region 630, and the size of the second through-hole 720a, which is formed in the coupling extension region 720, can be the same. In particular, the first and second through-holes 630a and 720a can have circular shapes with corresponding diameters.

[0069] Fig. Figure 19 is an enlarged view showing a coupling structure between a vibrating part, a cover element and a cover coupling element provided in a lamp for a vehicle according to a seventh embodiment of the present disclosure, and Fig. Figure 20 is a view illustrating a coupling structure between the cover element and the cover coupling element. Fig. 19. Fig. 21 is an enlarged view showing the cover element. Fig. 19 shows.

[0070] The contents of the lamps according to the first to sixth embodiments of the present disclosure can be applied equally to the lamp 10 according to the seventh embodiment of the present disclosure. However, according to the seventh embodiment of the present disclosure, the size of the first through-hole 630a and the size of the second through-hole 720a can differ from each other.

[0071] In particular, according to the seventh embodiment of the present disclosure, the width of the first through-hole 630a in a first direction D1 can differ from the width of the first through-hole 630a in a second direction D2 that intersects the first direction D1. Furthermore, the size and shape of the first through-hole 630a can differ from the size and shape of the second through-hole 720a. For example, the second through-hole 720a can have a circular shape. In the present description, the first direction D1 can be defined as a direction parallel to a direction in which the piezoelectric element 410 faces the outer lens part 200, and the second direction D2 can be defined as a direction parallel to a direction that intersects the first direction D1 perpendicularly, i.e.,defined as a direction that intersects a direction perpendicularly in which the first through-hole 630a penetrates the cover extension area 630. In particular, the width of the first through-hole 630a in the first direction D1 may be greater than the width of the first through-hole 630a in the second direction D2. Furthermore, the width of the second through-hole 630a in the second direction D2 may be equal to the width of the first through-hole 630a in the second direction D2.

[0072] According to the seventh embodiment of the present disclosure, when the cover element 600 and the cover coupling element 700 are coupled together, the relative positional relationship between the cover element 600 and the cover coupling element 700 can be variable. That is, according to the seventh embodiment of the present disclosure, the relative positional relationship between the first through-hole 630a and the second through-hole 720a in the first direction D1 can vary depending on the thickness of the vibrating part 400. In this case, since the first through-hole 630a has a relatively long shape in the first direction D1, the area in which the penetration element 800 is inserted into the first through-hole 630a can vary depending on the thickness of the vibrating part 400.Therefore, according to the seventh embodiment of the present disclosure, the assembly capability between the cover element 600 and the cover coupling element 700 can be improved.

[0073] Fig. Figure 22 is a view showing a piezoelectric element of a vibrating part provided in a lamp for a vehicle according to an eighth embodiment of the present disclosure, and Fig. 23 is a view showing a first example of an outer lens part, on which the in Fig. The vibrating part shown in section 22 is attached. Fig. 24 is a view showing a state in which the vibrating part is in Fig. 22 with the outer lens part made of Fig. 23 is coupled, and Fig. 25 is a view showing a second example of the outer lens part, where the in Fig. The vibrating part shown in section 22 is attached. Fig. 26 is a view showing a state in which the vibrating part is made of Fig. 22 with the outer lens part made of Fig. 25 is coupled.

[0074] Like the lamps according to the first to third embodiments of the present disclosure, the lamp 10 according to the eighth embodiment of the present disclosure can be attached to a curved surface area. However, the eighth embodiment of the present disclosure differs from the embodiments mentioned above in that the vibrating part 400 can be directly coupled to one side of the outer lens part 200.

[0075] In particular, according to the eighth embodiment of the present disclosure, the piezoelectric element 410 of the vibrating part 400 can be in contact with and attached to a side of the outer lens part 200. In particular, the piezoelectric element 410 can be connected to a side of the outer lens part 200 by means of a bolt nut.

[0076] For example, as in the Fig. 22, Fig. 23 to Fig. As shown in Figure 24, according to the first example of the eighth embodiment of the present disclosure, element through-holes 410a are formed on one side of the piezoelectric element 410, and lens bolt regions 250, which penetrate the element through-holes 410a, can be formed on regions on one side of the outer lens part 200 corresponding to the element through-holes 410a. Furthermore, according to the first example of the eighth embodiment of the present disclosure, the lamp 10 can also comprise mother elements 820, which are fixedly attached to the piezoelectric element 410 and inserted into the lens bolt region 250.

[0077] In contrast, as in the Fig. 22, Fig. 25 and Fig. As shown in Figure 26, according to the second example of the eighth embodiment of the present disclosure, the element through-holes 410a are formed on one side of the piezoelectric element 410, and lens through-holes 260 can be formed on regions on one side of the outer lens part 200 that correspond to the element through-holes 410a. In this case, the lamp 10 according to the present disclosure can further comprise bolt elements 840 that are inserted into the element through-holes 410a and the lens through-holes 260.

[0078] However, according to the eighth embodiment of the present disclosure, the region of the piezoelectric element 410 in which the element through-hole 410a is formed can be made of the same material as another region of the piezoelectric element 410. Furthermore, the element through-hole 410a can be formed, in particular, in a peripheral region of the piezoelectric element 410. For example, as shown in Fig. 22 shows that the piezoelectric element 410 has a square plate shape and the element through-holes 410a can each be formed in vertex regions of the square plate shape.

[0079] The following describes various control methods using the lamp according to the present disclosure.

[0080] A tone emitted by the vibrating element in the lamp according to the present disclosure can be used as a vehicle horn. For example, the lamp according to the present disclosure can be controlled by step i) recognizing input information about a horn tone input into the vehicle and step ii) emitting a tone by the vibrating element in response to the input information. The input information can be the duration for which a driver in the vehicle presses a horn button located on the steering wheel in the vehicle. In this case, the lamp according to the present disclosure can be controlled such that the volume of the tone emitted by the vibrating element increases with the duration for which the horn button is pressed.For example, the volume of the tone emitted by the vibrating part can be a first volume level if the time the horn button is pressed falls within a first segment. If the time the horn button is pressed falls within a second segment that is longer than the first, the volume of the tone emitted by the vibrating part can be a second volume level that is higher than the first volume level.

[0081] However, in the lamp according to the present disclosure, the output of the tone generated by the vibrating element can be controlled by actuating an external device. For example, the lamp according to the present disclosure can be controlled by step i) measuring a distance between the external device and the vehicle or the lamp by actuating the external device (e.g., a smart key) and step ii) outputting a level of tone emitted by the vibrating element of the lamp in response to the distance between the external device and the vehicle or the lamp. For example, the level of tone emitted by the vibrating element of the lamp can be controlled such that it increases with increasing distance between the external device and the vehicle or the lamp.

[0082] Furthermore, the tone emitted by the lamp according to the present disclosure can vary depending on the distance between the surrounding pedestrians and the vehicle with the lamp. For example, the lamp according to the present disclosure can be controlled by step i) detecting a distance between a pedestrian around the vehicle and the vehicle equipped with the lamp, or the lamp itself, and step ii) emitting a volume of the tone emitted by the vibrating part of the lamp in response to the distance between the vehicle or the lamp and the pedestrian. For example, the volume of the tone emitted by the vibrating part of the lamp can be controlled to increase as the distance between the vehicle or the lamp and the pedestrian decreases.

[0083] The present disclosure has been described with reference to the limited embodiments and the drawings, but the present disclosure is not limited thereto. The present disclosure can be implemented in various forms by those skilled in the art in the field to which it relates, within the technical spirit of the present disclosure and the scope corresponding to the appended claims. Representative drawing: Fig. 13 10 lamps for vehicles 100 lamp housing parts 200 Outer lens part 202 Curved surface area 202a Outer curved surface section 202b Inner curved surface section 202c Inner flat surface section 210 First outer lens area 220 Second outer lens area 250 lens bolt range 260 lens through-hole 300 lamp bezel part 400 vibrating part 410 Piezoelectric element 410a Element through hole 421 First electrode 422 Second electrode 500 connecting elements 600 cover element 610 Cover body 610a Vibration Reduction Hole 620 Cover rib 630 Coverage extension area 630a First through hole 700 Cover coupling element 710 coupling bodies 720 coupling extension area 720a Second through hole 800 Penetration element 820 Nut element 840 bolt element D1 First direction D2 Second direction QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] KR 10-2024-0107833

[0001]

Claims

[1] Lamp (10) for a vehicle, wherein the lamp (10) comprises: a lamp housing part (100) with an interior designed to accommodate a light source; an outer lens part (200) coupled to one side of the lamp housing part and designed to cover the interior; a vibration element (400) attached to the outer lens element (200); and a cover element (600) provided on one side of the vibrating part (400) and having at least a partial area that is designed to face the outer lens part (200), with the vibrating part (400) inserted between them, the vibrating part (400) comprises: a polarized piezoelectric element (410) and a first electrode (421) and a second electrode (422) which are arranged such that, based on a direction in which the piezoelectric element (410) is polarized, they each face two opposite sides, wherein the piezoelectric element (410) is arranged such that it is set into vibration by a time change of the voltage applied to the first electrode (421) and the second electrode (422) and transmits vibrations to the outer lens part (200) in order to produce a sound, and wherein the cover element (600) has one or more vibration reduction holes (610a). [2] Lamp (10) according to claim 1, wherein the cover element (600) further comprises: a cover body (610) which is provided such that it faces the outer lens part (200), wherein the vibration part (400) is inserted between them, wherein the cover body (610) is provided such that it is spaced apart from the vibration part (400); and Cover extension areas (630) projecting from two opposite sides of the cover body (610) towards a cover coupling element (700), and wherein the vibration reduction hole (610a) is formed in the cover body (610). [3] Lamp (10) according to claim 1 or 2, wherein the vibration reduction hole (610a) is provided as a plurality of vibration reduction holes (610a) and wherein at least some of the plurality of vibration reduction holes (610a) are arranged such that they are spaced apart from each other in a direction parallel to a direction in which the cover extension areas (630) formed on the two opposite sides of the cover body (610) are oriented towards each other. [4] Lamp (10) according to claim 2 or 3, wherein the cover element (600) further comprises a cover rib (620) which projects from the cover body (610) in the direction of the vibrating part (400) and is provided such that it is firmly connected to the vibrating part (400). [5] Lamp (10) according to claim 4, wherein a direction in which the cover extension areas (630) formed on the two opposite sides of the cover body (610) are directed towards each other is parallel to a direction in which the cover rib (620) extends. [6] Lamp (10) according to claim 4, wherein the cover rib (620) is provided as a plurality of cover ribs (620) spaced apart from each other in a direction which intersects a direction in which the cover extension areas (630) formed on the two opposite sides of the cover body (610) are facing each other. [7] Lamp (10) according to one of claims 2 to 6, further comprising a cover coupling element (700) of which one side is attached to the outer lens part (200), wherein the cover element (600) is coupled to the cover coupling element (700), wherein the cover extension area (630) has a first through hole (630a) and wherein the cover coupling element (700) comprises: a coupling element (710) attached to one side of the outer lens part (200); and a coupling extension area (720) which projects from an edge area of ​​the coupling body (710) in the direction of the cover element (600) and has a second through hole (720a) which is formed in an area corresponding to the first through hole (630a). [8] Lamp (10) according to any one of claims 2 to 7, wherein the cover body (610) is provided such that it faces all two opposite edge regions of the piezoelectric element (410) based on an extension direction of the piezoelectric element (410) and a central region of the extension direction, and wherein the vibration reduction holes (610a) are formed in areas of the cover body (610) which are facing the two opposite edge regions of the piezoelectric element (410) based on the direction of extension and the central region of the direction of extension. [9] Lamp (10) according to claim 7 or 8, wherein the cover element (600) is provided as a plurality of cover elements spaced apart from each other. [10] Lamp (10) according to claim 9, wherein the cover element (600) is provided as two cover elements and the two cover elements are provided such that they face each other, with a central area of ​​the coupling body (710) inserted between them. [11] Lamp (10) according to claim 9 or 10, wherein the plurality of cover elements (600) is identical insofar as the plurality of cover elements is interchangeable with each other. [12] Lamp (10) according to one of claims 7 to 11, wherein a width of the first through-hole (630a) in a first direction D1 differs from a width of the first through-hole (630a) in a second direction D2 intersecting the first direction D1. [13] Lamp (10) according to claim 12, wherein the size of the first through-hole (630a) and the size of the second through-hole (720a) are different from each other. [14] Lamp (10) according to one of claims 12 or 13, wherein the first direction D1 is a direction parallel to a direction in which the piezoelectric element (410) faces the outer lens part (200), and the width of the first through-hole (630a) in the first direction D1 is greater than the width of the first through-hole (630a) in the second direction D2. [15] Lamp (10) according to one of claims 12 to 14, wherein the second direction D2 is a direction parallel to a direction that intersects the first direction D1 perpendicularly, and the width of the second through-hole (720a) in the second direction D2 corresponds to the width of the first through-hole (630a) in the second direction D2. [16] Lamp (10) according to one of claims 7 to 15, wherein the coupling element (710) is inserted into the outer lens. [17] Lamp according to any one of claims 7 to 16, wherein the size of the vibration reduction hole (610a) is smaller than the size of the first through hole (630a). [18] Lamp according to any one of claims 4 to 17, wherein the vibration reduction hole (610a) is provided such that it is spaced apart from the cover rib (620).

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