Lamp for vehicle

Abstract

A lamp for a vehicle, the lamp including: a lamp housing portion having an internal space configured to accommodate a light source; an outer lens portion coupled to one side of the lamp housing portion and configured to cover the internal space; a vibration portion fixed to the outer lens portion; a cover member disposed at one side of the vibration portion, and including at least one partial region disposed to face the outer lens portion, with the vibration portion interposed between the cover member and the outer lens portion; and a cover coupling member having one side fixed to the outer lens portion such that the cover member is coupled to the cover coupling member. The vibration portion includes a polarized piezoelectric element, and first and second electrodes. The piezoelectric element vibrates to output sound in response to a change in voltage applied to the first electrode and the second electrode over time.

Description

Cross Reference to Related Applications

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0107832, filed on August 12, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference for all purposes. TECHNICAL FIELD

[0002] The disclosure relates to a lamp for a vehicle, and more particularly, to a lamp for a vehicle capable of outputting sound. BACKGROUND

[0003] Recently, in addition to the traffic function required for a vehicle, the demand for an entertainment function is also increasing, and thus the demand for a lamp installed in a vehicle is also increasing, and the lamp has other functions in addition to a simple lighting function. For example, recently, a lamp for a vehicle additionally adopts a function capable of interacting with the outside.

[0004] In the related art, a lamp for a vehicle has performed a function of interacting with the outside through visual information such as a lighting image or a light distribution pattern of the lamp for a vehicle. Meanwhile, in addition to the method using visual information, the method of performing a function of interacting with the outside includes a method of using auditory information such as sound. However, since the lamp for a vehicle in the related art adopts a watertight structure to prevent moisture from accumulating in the lamp for a vehicle, it is difficult to install a speaker configured to output sound in the lamp for a vehicle. SUMMARY

[0005] The disclosure is directed to adding a function capable of outputting sound to a lamp for a vehicle without affecting the performance of the lamp for a vehicle.

[0006] In a general aspect of the disclosure, a lamp for a vehicle includes a lamp housing portion having an inner space configured to accommodate a light source; an outer lens portion coupled to one side of the lamp housing portion and configured to cover the inner space; a vibration portion fixed to the outer lens portion; a cover member disposed at one side of the vibration portion and including at least one partial area disposed to face the outer lens portion, wherein the vibration portion is interposed between the cover member and the outer lens portion; and a cover coupling member having one side fixed to the outer lens portion such that the cover member is coupled to the cover coupling member, wherein the vibration portion includes a piezoelectric element polarized; and first and second electrodes disposed to face two opposite sides, respectively, based on a direction in which the piezoelectric element is polarized, wherein the piezoelectric element vibrates to output sound in response to a change in voltage applied to the first and second electrodes over time, wherein the cover member further includes a cover body disposed to face the outer lens portion, wherein the vibration portion is interposed between the cover body and the outer lens portion, the cover body being spaced apart from the vibration portion; and a cover extension area protruding from two opposite sides of the cover body toward the cover coupling member and including a first through-hole, and wherein a width of the first through-hole in a first direction D1 is different from a width of the first through-hole in a second direction D2 intersecting the first direction D1.

[0007] The cover coupling member can include a coupling body fixed to one side of the outer lens portion; and a coupling extension area protruding from a peripheral area of the coupling body toward the cover member and having a second through-hole formed in an area corresponding to the first through-hole, wherein a size of the first through-hole and a size of the second through-hole are different from each other.

[0008] The first direction D1 can be a direction parallel to a direction in which the piezoelectric element faces the outer lens portion, wherein 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.

[0009] The second through-hole can have a circular shape.

[0010] The second direction D2 can be a direction parallel to a direction that perpendicularly intersects the first direction D1, wherein the width of the second through-hole in the second direction D2 can correspond to the width of the first through-hole in the second direction D2.

[0011] The cover member can further include a cover rib protruding from the cover body toward the vibration portion, and wherein the cover rib is attached to the vibration portion.

[0012] The lamp may also include a penetrating member configured to penetrate a first through hole and a second through hole.

[0013] The directions in which the cover extension areas formed on two opposite sides of the cover face each other can be parallel to the direction of the cover rib extension.

[0014] The cover ribs may include a plurality of cover ribs spaced apart from each other in a direction that intersects with the direction in which the cover extension regions formed on two opposite sides of the cover face each other.

[0015] The connector can be inserted into the outer lens.

[0016] The cover may have one or more vibration damping holes.

[0017] The size of the vibration damping hole can be smaller than the size of the first through hole.

[0018] The vibration damping holes can be configured as a plurality of vibration damping holes, wherein at least some of the plurality of vibration damping holes can be configured to be spaced apart from each other in a direction parallel to the direction in which the cover extension regions formed on two opposite sides of the cover face each other.

[0019] The vibration damping holes can be set to be spaced apart from the cover ribs.

[0020] The cover components can be configured as multiple cover components spaced apart from each other.

[0021] The cover member can be configured as two cover members, wherein the two cover members can face each other, and wherein the central region of the connector is located between the two cover members.

[0022] Multiple cover components can be interchanged with each other.

[0023] In another general aspect of this disclosure, a lamp for a vehicle includes: a lamp housing portion including an internal space configured to receive a light source; and an outer lens coupled to one side of the lamp housing portion and configured to cover the internal space. A vibrating portion, fixed to the outer lens portion, includes: a polarized piezoelectric element; a first electrode and a second electrode, the first electrode and the second electrode facing two opposite sides based on the polarization direction of the piezoelectric element; a cover member disposed on one side of the vibrating portion, and including at least one partial region configured to face the outer lens portion, wherein the vibrating portion is located between the cover member and the outer lens portion; a cover connecting member having a fixed position to one side of the outer lens portion such that the cover member is connected to the cover connecting member; and a controller configured to control the voltage applied to the first electrode and the second electrode over time, causing the piezoelectric element to vibrate to output sound.

[0024] The cover member can further include a cover body disposed to face the outer lens portion, wherein the vibration portion is interposed between the cover body and the outer lens portion, the cover body is spaced apart from the vibration portion, and a cover extension region protruding from both opposite sides of the cover body toward the cover coupling member and including a first through-hole.

[0025] A width of the first through-hole in a first direction D1 can be different from a width of the first through-hole in a second direction D2 intersecting the first direction D1. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a perspective view showing a state in which an outer lens portion is spaced apart from a lamp housing portion and a lamp bezel portion in a lamp for a vehicle according to an example of the present disclosure.

[0027] Figure 2 FIG. 2 is a cross-sectional view of a vibration portion of a lamp for a vehicle according to the present disclosure, i.e., a view showing a state before power is supplied to an electrode.

[0028] Figure 3 FIG. 3 is a cross-sectional view of the vibration portion of the lamp for the vehicle according to the present disclosure, i.e., a view showing one state after power is supplied to the electrode.

[0029] Figure 4 FIG. 4 is a cross-sectional view of the vibration portion of the lamp for the vehicle according to the present disclosure, i.e., a view showing another state after power is supplied to the electrode.

[0030] Figure 5 FIG. 5 is a cross-sectional view showing a state in which a vibration portion is fixed to a curved surface region of an outer lens portion by an adhesive member in a lamp for a vehicle according to a first embodiment of the present disclosure.

[0031] Figure 6 FIG. 6 is a cross-sectional view showing a state in which a vibration portion is fixed to a curved surface region of an outer lens portion by an adhesive member in a lamp for a vehicle according to a second embodiment of the present disclosure.

[0032] Figure 7 FIG. 7 is a cross-sectional view showing a state in which a vibration portion is fixed to a curved surface region of an outer lens portion by an adhesive member in a lamp for a vehicle according to a third embodiment of the present disclosure.

[0033] Figure 8 FIG. 8 is a perspective view of a lamp for a vehicle according to a fourth embodiment of the present disclosure.

[0034] Figure 9 is an enlarged perspective view showing a cover member in Figure 8

[0035] Figure 10 Figure 8 ​​Enlarged sectional view of the vibrating part and the cover component and its surrounding parts.

[0036] Figure 11 It is shown Figure 8 A perspective view of the state in which the cover component has been removed.

[0037] Figure 12 It is shown Figure 8 An enlarged view of the connection status of the vibrating part, the cover component, and the cover connecting component.

[0038] Figure 13 This is a perspective view of a lamp for a vehicle according to a fifth embodiment of the present disclosure.

[0039] Figure 14 It is shown Figure 13 An enlarged view of the connection structure between the cover component and the vibrating part.

[0040] Figure 15 It is shown Figure 13 Enlarged sectional view of the vibrating part and the cover component and its surrounding parts.

[0041] Figure 16 This is a perspective view of a lamp for a vehicle according to a sixth embodiment of the present disclosure.

[0042] Figure 17 yes Figure 16 A perspective view of the cover component.

[0043] Figure 18 It is shown Figure 16 An enlarged view of the connection status of the vibrating part, the cover component, and the cover connecting component.

[0044] Figure 19 This is an enlarged view showing the connection structure between the vibrating part, the cover member, and the cover connecting member in a lamp for a vehicle, according to a seventh embodiment of the present disclosure.

[0045] Figure 20 It is used for explanation Figure 19 A view of the connection structure between the cover component and the cover connecting component.

[0046] Figure 21 It is shown Figure 19 Enlarged view of the cover component.

[0047] Figure 22 This is a view showing a piezoelectric element disposed in a vibrating portion of a lamp for a vehicle according to an eighth embodiment of the present disclosure.

[0048] Figure 23 It shows that it is fixed. Figure 22 A view of the first example of the outer lens portion of the vibrating part shown.

[0049] Figure 24 is a view showing a state in which the vibration portion in Figure 22 is coupled to the outer lens portion in Figure 23 .

[0050] Figure 25 is a view showing a second example of the outer lens portion in which the vibration portion shown in Figure 22 is fixed.

[0051] Figure 26 is a view showing a state in which the vibration portion in Figure 22 is coupled to the outer lens portion in Figure 25 . DETAILED DESCRIPTION

[0052] Hereinafter, a lamp for a vehicle according to the present disclosure will be described with reference to the accompanying drawings.

[0053] Lamp for a vehicle

[0054] Figure 1 is a view showing a state in which the outer lens portion in the lamp for a vehicle according to an example of the present disclosure is spaced apart from the lamp housing portion and the lamp bezel portion, and Figure 2 is a cross-sectional view of a vibration portion of a lamp for a vehicle according to the present disclosure, i.e., a view showing a state before power is supplied to an electrode. Figure 3 is a cross-sectional view of a vibration portion of a lamp for a vehicle according to the present disclosure, i.e., a view showing one state after power is supplied to an electrode, and Figure 4 is a cross-sectional view of a vibration portion of a lamp for a vehicle according to the present disclosure, i.e., a view showing another state after power is supplied to an electrode.

[0055] Referring to Figure 1 and Figure 2 , a lamp 10 for a vehicle according to the present disclosure (hereinafter referred to as "lamp") can include a lamp housing portion 100 having an internal space configured to accommodate a light source, and an outer lens portion 200 coupled to one side of the lamp housing portion 100 and configured to cover the internal space. More specifically, the outer lens portion 200 can be fixedly coupled to the lamp housing portion 100. Light emitted from the light source can be propagated to the outside through the outer lens portion 200, and thus a predetermined light distribution pattern and an illumination image can be formed.

[0056] Meanwhile, according to the present disclosure, the lamp 10 can not only form a predetermined light distribution pattern and an illumination image like a lamp in the related art, but also generate a sound. More specifically, the lamp 10 according to the present disclosure can output a sound by vibrating the lamp housing portion 100 or the outer lens portion 200.

[0057] To achieve the above object, a lamp 10 according to the present disclosure can include a vibration portion 400 fixed to a lamp housing portion 100 or an outer lens portion 200. The vibration portion 400 can be configured to output sound by vibrating the lamp housing portion 100 or the outer lens portion 200. For example, as shown in Figure 1 , the vibration portion 400 can be fixed to the outer lens portion 200. However, unlike the configuration shown in Figure 1 , the vibration portion 400 can be fixed to the lamp housing portion 100. Meanwhile, the vibration portion 400 can be accommodated in an internal space formed in the lamp housing portion 100.

[0058] With continued reference to Figure 1 , the lamp 10 according to the present disclosure can further include a lamp bezel portion 300 fixedly coupled to one side of the lamp housing portion 100, the lamp bezel portion 300 being disposed to at least partially face the outer lens portion 200. More specifically, based on Figure 1 , in the case of assembling the outer lens portion 200 to the lamp housing portion 100, one area of the outer lens portion 100 can face the lamp bezel portion 300.

[0059] Meanwhile, the vibration portion 400 of the lamp 10 according to the present disclosure can include a piezoelectric element 410 that is polarized. That is, according to the present disclosure, the vibration portion 400 can include the piezoelectric element 410 in a polarized state in which one side thereof is positively charged and the other side thereof is negatively charged unless the temperature becomes Curie temperature or higher or exceeds a predetermined range, and a reverse voltage is applied in a direction opposite to the direction of the electric field in the piezoelectric element. Any material can be used for the piezoelectric element 410 without limitation, as long as the material can be polarized. For example, the piezoelectric element 410 can be made of a ceramic material. Meanwhile, in the present specification, as shown in Figures 2 to 4 , the direction in which the positively charged area and the negatively charged area of the piezoelectric element 410 face each other is defined as the direction in which the piezoelectric element is polarized.

[0060] With continued reference to Figures 2 to 4 , the lamp 10 according to the present disclosure can include first and second electrodes 421 and 422 disposed to face both opposite sides, respectively, based on the direction in which the piezoelectric element 410 is polarized. That is, the first and second electrodes 421 and 422 can be disposed to face or contact the negatively charged area and the positively charged area in the piezoelectric element 410, respectively.

[0061] The process in which the lamp 10 according to the present disclosure outputs sound will be described below. When the first electrode 421 and the second electrode 422 are supplied with power through the power supply part 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 voltage of the first electrode 421 and the voltage of the second electrode 422 vary with time. Accordingly, according to the present disclosure, as the voltage applied to the first electrode 421 and the second electrode 422 varies with time, the power applied to the piezoelectric element 410 by the first electrode 421 and the second electrode 422 also varies with time, so that the piezoelectric element 410 performs motion in its longitudinal direction and its width direction. This motion is converted into vibration of the piezoelectric element 410, and the lamp housing part 100 or the outer lens part 200 vibrates through the vibration of the piezoelectric element 410, thereby outputting sound to the outside. For example, as shown in Figure 2 , before the first electrode 421 and the second electrode 422 are supplied with power, the first electrode 421 and the second electrode 422 are not charged, so that no external force is applied to the piezoelectric element 410. Then, as shown in Figure 3 , when a first time elapses after the first electrode 421 and the second electrode 422 are supplied with power, the first electrode 421 and the second electrode 422 are positively and negatively charged, respectively, so that the piezoelectric element 410 expands in its thickness direction while receiving a force in a direction toward the first electrode 421 and the second electrode 422. Then, as shown in Figure 4 , when a second time elapses after the first electrode 421 and the second electrode 422 are supplied with power, the first electrode 421 and the second electrode 422 are negatively and positively charged, respectively, so that the piezoelectric element 410 contracts in its thickness direction while receiving a force in a direction away from the first electrode 421 and the second electrode 422. Thereafter, the state shown in Figures 2 to 4 is repeated, so that the piezoelectric element 410 vibrates. A controller (e.g., a processor) can be configured to control the voltage applied to the first electrode 421 and the second electrode 422 to make the piezoelectric element vibrate and produce sound.

[0062] Meanwhile, referring back to Figure 1 , in addition, according to the present disclosure, the vibration part 400 can be disposed at a position in the lamp 10 where the vibration part 400 can be protected from external direct sunlight. More specifically, the vibration part 400 can be fixed to a region of the outer lens part 200 or the lamp housing part 100 where the visible light transmittance is low. For example, as shown in Figure 1As shown, in the case where the vibration portion 400 is fixed to the outer lens portion 200, the outer lens portion 200 can include a first outer lens region 210 having a visible light transmittance (i.e., a first transmittance) and a second outer lens region 220 having a visible light transmittance (i.e., a second transmittance lower than the first transmittance), and the vibration portion 400 can be fixed to the second outer lens region 220. In contrast, in the case where the vibration portion 400 is fixed to the lamp housing portion 100, the vibration portion 400 can be fixed to a lower region of the inner surface of the lamp housing portion 100. In this case, sound generated by the vibration of the vibration portion 400 can be propagated in the front-rear direction through the lower side of the lamp (i.e., the lower side of the vehicle). Meanwhile, the piezoelectric element 410 constituting the vibration portion 400 can have a plate shape.

[0063] Figure 5 FIG. 1 is a cross-sectional view showing a state in which a vibration portion of a lamp for a vehicle according to a first embodiment of the disclosure is fixed to a curved region of an outer lens portion by an adhesive member.

[0064] Meanwhile, referring to Figure 1 and Figure 5 A curved region 202 can be formed on at least a portion of the outer lens portion 200 to improve the aesthetic appearance of the lamp 10. For example, in practice, the entire region of the outer lens portion 200 can have a curved shape.

[0065] In this case, according to the disclosure, the vibration portion 400 can be fixed to the curved region 202. More specifically, the vibration portion 400 can be adhered to the outer lens portion 200 by an adherable material. More specifically, the lamp 10 according to the disclosure can further include an adhesive member 500 disposed between the outer lens portion 200 and the vibration portion 400, the adhesive member 500 being configured to attach the vibration portion 400 to the outer lens portion 400. A nonwoven tape or the like can be used for the adhesive member 500 to ensure rigidity against external impact. The nonwoven tape can have a thicker adhesive layer than a general double-sided tape, and the adhesive layer can function as a kind of cushion, thereby exhibiting excellent impact resistance.

[0066] Meanwhile, the outer lens portion 200 can be divided into an outer portion and an inner portion. More specifically, the outer lens portion 200 can be divided into an outer surface exposed to the outside of the lamp 10 and an inner surface facing the internal space of the lamp 10. Accordingly, an outer section can be formed on the outer surface of the curved region 202 formed on the outer lens portion 200, and an inner section can be formed on the inner surface of the curved region 202. For example, as Figure 5As illustrated, an outer curved surface section 202a including a curved shape can be formed on the outer surface of the curved surface region 202, and an inner curved surface section 202b including a curved shape can be formed on the inner surface of the curved surface region 202. In this case, according to the first embodiment of the present disclosure, the vibration portion 400 can be fixed to the inner curved surface section 202b, and the adhesive member 500 can be provided in the peripheral region of the vibration portion 400. More specifically, according to the first embodiment of the present disclosure, the vibration portion 400 can have a flat shape, and the adhesive member 500 can be provided in a region other than the central region of the vibration portion 400. Thus, according to the first embodiment of the present disclosure, a gap can be formed between the central region of the vibration portion 400 and the inner curved surface section 202b (see the arrow in FIG. 10). As in the first embodiment of the present disclosure, the adhesive member 500 can be provided only on the peripheral region other than the central region of the vibration portion 400, so that the effect of improving the performance of the vibration portion 400 in a low frequency region can be obtained with the gap formed between the central region of the vibration portion 400 and the inner curved surface section 202b. Figure 5

[0067] Figure 6 is a cross-sectional view illustrating a state in which a vibration portion in a lamp for a vehicle according to a second embodiment of the present disclosure is fixed to a curved surface region of an outer lens portion by an adhesive member. Differences from the first embodiment of the present disclosure described above with reference to Figure 6 will mainly be described. The above-described matters described above with reference to Figure 5 may equally apply to matters other than those described below with reference to Figures 1 to 5 . Figure 6

[0068] With reference to Figure 6 , an outer curved surface section 202a including a curved shape can be formed on the outer surface of the curved surface region 202 of the outer lens portion 200, and an inner flat surface section 202c having a flat shape can be formed on the inner surface of the curved surface region 202. For example, the inner flat surface section 202c can be formed by additionally machining a part of the curved surface section formed on the inner surface of the outer lens portion 200.

[0069] ​​In this case, according to the second embodiment of the disclosure, the vibration portion 400 can be fixed to the inner flat surface section 202c. In this case, the adhesive member 500 can be provided only on the peripheral area of the vibration portion 400, without being provided on the central area of the vibration portion 400. In this case, similarly to the first embodiment of the disclosure, the performance of the vibration portion 400 can be improved in the low frequency region. However, according to the second embodiment of the disclosure, the vibration portion 400 can be fixed to the outer lens portion 200 through the inner flat surface section 202c, so that the performance of fixing the vibration portion 400 to the outer lens portion 200 can be further improved.

[0070] Figure 7 is a cross-sectional view illustrating a state in which the vibration portion in the lamp for a vehicle according to the third embodiment of the disclosure is fixed to the curved surface area of the outer lens portion by the adhesive member.

[0071] As with the second embodiment of the disclosure, according to the third embodiment of the disclosure, the outer curved surface section 202a and the inner flat surface section 202c can also be formed on the curved surface area 202. However, according to the third embodiment of the disclosure, the adhesive member 500 can be provided on the peripheral area and the central area of the vibration portion 400.

[0072] Meanwhile, as described above, the outer lens portion 200 can include the first outer lens area 210 and the second outer lens area 220 according to the transmittance of the visible light, and the curved surface area 202 can be formed on the second outer lens area 220.

[0073] Figure 8 is a perspective view of a lamp for a vehicle according to a fourth embodiment of the disclosure, Figure 9 is an enlarged perspective view illustrating a cover member in Figure 8 . Figure 10 is an enlarged cross-sectional view illustrating a vibration portion and a cover member and surrounding components thereof in Figure 8 . Figure 11 is a perspective view illustrating a state in which the cover member in Figure 8 is removed. Figure 12 is an enlarged view illustrating a state in which the vibration portion, the cover member, and the cover coupling member are coupled in Figure 8 .

[0074] The lamp 10 according to the fourth embodiment of the disclosure can further include a lamp housing portion, an outer lens portion, and a vibration portion. However, in addition to the above-described components, the lamp 10 according to the fourth embodiment of the disclosure can further include a component configured to cover the vibration portion.

[0075] More specifically, the lamp 10 according to the present disclosure can further include a lamp housing portion 100 having an inner space for accommodating a light source, an outer lens portion 200 coupled to one side of the lamp housing portion 100 and configured to cover the inner space, a vibration portion 400 fixed to the outer lens portion 200, and a cover member 600 disposed at one side of the vibration portion 400 and having at least one partial area facing the outer lens portion 200, wherein the vibration portion 400 is interposed between the cover member 600 and the outer lens portion 200. The cover member 600 can be configured to fix the vibration portion 400 together with the adhesive member 500 to the outer lens portion 200. To this end, at least a portion of the area of the cover member 600 facing the outer lens portion 200 can be disposed to be closely attached to the vibration portion 400, wherein the vibration portion 400 is interposed between the cover member 600 and the outer lens portion 200.

[0076] Meanwhile, according to the present disclosure, an apparatus for minimizing the area of the cover member 600 that presses the vibration portion 400 can be additionally provided, thereby preventing the cover member 600 from absorbing the vibration of the vibration portion 400 when the vibration portion 400 vibrates to output sound.

[0077] More specifically, as shown in Figure 9 and Figure 10 , the cover member 600 can include a cover body 610 disposed to face the outer lens portion 200, wherein the vibration portion 400 is interposed between the cover body 610 and the outer lens portion 200, and a cover rib 620 protruding from the cover body 610 toward the vibration portion 400 and disposed to be closely attached to the vibration portion 400. The cover body 610 can have a plate shape, and the cover rib 620 can have a shape protruding from a partial area of the plate shape toward the vibration portion 400. That is, the vibration portion 400 can be fixed to the outer lens portion 200 by being supported by the cover rib 620. For example, the cover rib 620 can have a rod structure having a straight shape.

[0078] Meanwhile, the lamp 10 according to the fourth embodiment of the present disclosure can further include a member fixed to one side of the outer lens portion 200 such that the cover member 600 is coupled to the member. More specifically, as shown in Figures 8 to 12As shown, the lamp 10 according to the disclosure can further include a cover coupling member 700 fixed to one side of the outer lens portion 200 such that the cover member 600 is coupled to the cover coupling member 700. In this case, the cover member 600 can further include a cover extension region 630 protruding from both opposite sides of the cover body 610 toward the cover coupling member 700 and having the first through hole 630a. In addition, the cover coupling member 700 can include a coupling body 710 fixed to one side of the outer lens portion 200, and a coupling extension region 720 protruding from a peripheral region of the coupling body 710 toward the cover member and having a second through hole formed in a region corresponding to the first through hole.

[0079] The cover member 600 and the cover coupling member 700 can be fixedly coupled to each other on the cover extension region 630 and the coupling extension region 720. More specifically, the lamp 10 according to the disclosure can further include a penetrating member 800 configured to penetrate the first through hole 630a of the cover extension region 630 and the second through hole 720a of the coupling extension region 720. For example, the penetrating member 800 can be coupled to the first through hole 630a and the second through hole 720a in a bolt-nut manner.

[0080] Meanwhile, according to a fourth embodiment of the disclosure, the cover ribs 620 can be provided as a plurality of cover ribs 620. More specifically, the cover extension regions 630 respectively provided at both opposite sides of the cover body 610 in directions facing each other can extend in parallel to directions in which the cover ribs 620 extend. The plurality of cover ribs 620 can be provided to be spaced apart from each other in directions intersecting the directions in which the cover extension regions 630 respectively formed at both opposite sides of the cover body 610 face each other. For example, Figure 9 A state in which the cover member 600 has two cover ribs 620 is shown.

[0081] Meanwhile, according to the disclosure, a portion of the cover coupling member 700 can be inserted into the outer lens portion 200. More specifically, as Figure 11 shown, the coupling body 710 can be inserted into the outer lens portion 200.

[0082] Figure 13 is a perspective view of a lamp for a vehicle according to a fifth embodiment of the disclosure, Figure 14 is a perspective view showing Figure 13 is an enlarged view showing a coupling structure between a cover member and a vibration portion in Figure 15 is an enlarged sectional view showing a vibration portion and a cover member and surrounding components thereof in Figure 13

[0083] ​The contents of the lamp according to the first to fourth embodiments of the present disclosure can be equally applied to the lamp 10 according to the fifth embodiment of the present disclosure. However, the fifth embodiment of the present disclosure is different from the above-described embodiments in that the cover member 600 can additionally have a component for reducing vibration of the cover member 600.

[0084] As Figures 13 to 15 indicated, one or more vibration reduction holes 610a can be formed in the cover member 600. More specifically, the vibration reduction holes 610a can be provided as a plurality of vibration reduction holes 610b. The vibration reduction holes 610a can be configured to minimize vibration energy transmitted from the vibration portion 400 to the cover member 600. In addition, the vibration reduction holes 610a can also serve to allow the vibration energy transmitted to the cover member 600 to be eliminated without being diffused. For example, the vibration reduction holes 610a can be formed in the cover body 610 of the cover member 600.

[0085] As described above, the vibration reduction holes 610a can be provided as a plurality of vibration reduction holes 610a. In this case, as Figure 13 and 14 indicated, at least some of the plurality of vibration reduction holes 610a can be provided to be spaced apart from each other in a direction parallel to a direction in which the cover extension regions 630 respectively formed at both opposite sides of the cover body 610 face each other. Figure 13 and Figure 14 It is shown that six groups each including four vibration reduction holes 610a provided to be spaced apart from each other in a direction parallel to a direction in which the cover extension regions 630 face each other are provided.

[0086] With continued reference to Figure 13 , the cover body 610 provided in the cover member 600 of the lamp 10 according to the fifth embodiment of the present disclosure can be provided to face all of two opposite peripheral regions of the piezoelectric element 410 based on an extension direction of the piezoelectric element 410 and to face a central region of the piezoelectric element 410 based on the extension direction. More specifically, the cover body 610 can be provided to surround the entire region of the piezoelectric element 410. In this case, the vibration reduction holes 610a can be formed in regions of the cover body 610 facing the two opposite peripheral regions of the piezoelectric element 410 based on the extension direction and the central region of the piezoelectric element 420 based on the extension direction. Figure 13 and Figure 14 It is shown that two groups of vibration reduction holes each including four vibration reduction holes 610a are formed in each of the two opposite peripheral regions and the central region of the cover body 610 facing the piezoelectric element 410.

[0087] Figure 16 is a perspective view of a lamp for a vehicle according to a sixth embodiment of the present disclosure, and Figure 17 is Figure 16 a perspective view of a cover member in.Figure 18 is an enlarged view showing a state in which the vibration portion, the cover member, and the cover coupling member in Figure 16 are coupled.

[0088] The contents of the lamp according to the first to fourth embodiments of the present disclosure can be equally applied to the lamp 10 according to the sixth embodiment of the present disclosure. As in the fifth embodiment of the present disclosure, the vibration reduction hole 610a can be formed in the cover member 600. However, according to the sixth embodiment of the present disclosure, the lamp 10 can have a plurality of cover members 600.

[0089] That is, according to the sixth embodiment of the present disclosure, the plurality of cover members 600 can be disposed to be spaced apart from each other. For example, as shown in Figure 16 and 17 , two cover members 600 can be disposed to face each other with the central region of the coupling body 710 of the cover coupling member 700 interposed therebetween.

[0090] More specifically, the two cover members 600 can be identical to each other to the extent that the two cover members 600 can be interchanged with each other. This configuration can be interpreted as a configuration in which even if the two cover members 600 do not have exactly the same shape in a physical sense, the two cover members 600 are identical to each other to the extent that the two cover members 600 exhibit their functions when the two cover members 600 are assembled after interchanging their positions.

[0091] Meanwhile, according to the fifth and sixth embodiments of the present disclosure, the size of each vibration reduction hole 610a can be smaller than the size of the first through-hole 630a and the size of the second through-hole 720a.

[0092] Further, as shown in Figure 15 , the vibration reduction hole 610a can be disposed to be spaced apart from the cover rib 620. It can be appreciated that the vibration reduction hole 610a is not formed in a region in which the cover rib 620 of the cover body 610 extends.

[0093] Meanwhile, according to the fourth to sixth embodiments of the present disclosure, the size of the first through-hole 630a formed in the cover extension region 630 and the size of the second through-hole 720a formed in the coupling extension region 720 can correspond to each other. More specifically, the first through-hole 630a and the second through-hole 720a can have a circular shape with diameters corresponding to each other.

[0094] Figure 19 is an enlarged view showing a coupling structure between a vibration portion, a cover member, and a cover coupling member disposed in a lamp for a vehicle according to a seventh embodiment of the present disclosure, Figure 20 is a view for explaining a coupling structure between a cover member and a cover coupling member in Figure 19 .Figure 21 is an enlarged view illustrating the cover member in Figure 19

[0095] The contents of the lamp according to the first to sixth embodiments of the present disclosure can be equally applied 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 be different from each other.

[0096] More specifically, according to the seventh embodiment of the present disclosure, the width of the first through-hole 630a in the first direction D1 can be different from the width of the first through-hole 630a in the second direction D2 intersecting the first direction D1. In addition, the size and shape of the first through-hole 630a can be different from the size or shape of the second through-hole 720a. For example, the second through-hole 720a can have a circular shape. Meanwhile, in the present specification, the first direction D1 can be defined as a direction parallel to a direction in which the piezoelectric element 410 faces the outer lens portion 200, and the second direction D2 can be defined as a direction parallel to a direction perpendicularly intersecting the first direction D1, that is, defined as a direction perpendicularly intersecting the direction in which the first through-hole 630a penetrates the cover extension region 630. More specifically, the width of the first through-hole 630a in the first direction D1 can be greater than the width of the first through-hole 630a in the second direction D2. In addition, the width of the second through-hole 720a in the second direction D2 can correspond to the width of the first through-hole 630a in the second direction D2.

[0097] According to the seventh embodiment of the present disclosure, when the cover member 600 and the cover coupling member 700 are coupled to each other, the relative positional relationship between the cover member 600 and the cover coupling member 700 can be variable. That is, according to the seventh embodiment of the present disclosure, the relative positional relationship of the first through-hole 630a and the second through-hole 720a in the first direction D1 can vary depending on the thickness of the vibration portion 400. In this case, since the first through-hole 630a has a relatively long shape in the first direction D1, the region in which the penetration member 800 is inserted into the first through-hole 630a can vary depending on the thickness of the vibration portion 400. Accordingly, according to the seventh embodiment of the present disclosure, the assemblability between the cover member 600 and the cover coupling member 700 can be improved.

[0098] Figure 22 is a view illustrating a piezoelectric element provided in a vibration portion in a lamp for a vehicle according to an eighth embodiment of the present disclosure, Figure 23 is a view illustrating an outer lens portion in which Figure 22 is fixed to the vibration portion illustrated in Figure 24 is a view illustrating Figure 22 in which the vibration portion is coupled to Figure 23 ​A view showing the state of the outer lens portion. Figure 25 It shows that it is fixed. Figure 22 A second example view of the outer lens component of the vibrating part shown. Figure 26 It is shown Figure 22 The vibrating part in the middle is connected to Figure 25 A view showing the state of the outer lens portion.

[0099] Similar to the lamps according to the first to third embodiments of this disclosure, the lamp 10 according to the eighth embodiment of this disclosure can be fixed to a curved surface region. However, the eighth embodiment of this disclosure differs from the above embodiments in that the vibrating portion 400 can be directly connected to one side of the outer lens portion 200.

[0100] More specifically, according to the eighth embodiment of this disclosure, the piezoelectric element 410 of the vibrating portion 400 can contact and be fixed to one side of the outer lens portion 200. More specifically, the piezoelectric element 410 can be connected to one side of the outer lens portion 200 by means of a bolt and nut.

[0101] For example, such as Figures 22 to 24 As shown, in the first example of the eighth embodiment of this disclosure, a component through-hole 410a may be formed on one side of the piezoelectric element 410, and a lens bolt region 250 passing through the component through-hole 410a may be formed on one side of the outer lens portion 200 in a region corresponding to the component through-hole 410. Furthermore, the lamp 10 of the first example of the eighth embodiment of this disclosure may also include a nut member 820 that is tightly attached to the piezoelectric element 410 and inserted into the lens bolt region 250.

[0102] On the contrary, such as Figure 22 , 25 As shown in Figure 26, in a second example of the eighth embodiment of the present disclosure, the element through-hole 410a may be formed on one side of the piezoelectric element 410, and the lens through-hole 260 may be formed on the region of the outer lens portion 200 corresponding to the element through-hole 410a. In this case, the lamp 10 according to the present disclosure may also include a bolt member 840 inserted into the element through-hole 410a and the lens through-hole 260.

[0103] Furthermore, according to the eighth embodiment of this disclosure, the region in the piezoelectric element 410 where the element through-hole 410a is formed can be made of the same material as another region of the piezoelectric element 420. More specifically, the element through-hole 410a can be formed in the peripheral region of the piezoelectric element 410. For example, as... Figure 22 As shown, the piezoelectric element 410 may have a quadrilateral shape, and the element through holes 410a may be formed in the vertex regions of the quadrilateral shape.

[0104] Hereinafter, various control methods using the lamp according to the disclosure will be described.

[0105] The sound output by the vibration portion in the lamp according to the disclosure can be used as a horn sound of a vehicle. For example, the lamp according to the disclosure can be controlled by step i) identifying input information about input of a horn sound to a vehicle and step ii) outputting a sound by the vibration portion in response to the input information. The input information can be a time when a driver in the vehicle presses a horn button provided on a steering wheel in the vehicle. In this case, according to the disclosure, the lamp can be controlled so that the amplitude of the sound output by the vibration portion increases as the time of pressing the horn button increases. For example, in the case where the time of pressing the horn button is in a first section, the amplitude of the sound output by the vibration portion can be a first amplitude. In the case where the time of pressing the horn button is in a second section longer than the first section, the amplitude of the sound output by the vibration portion can be a second amplitude greater than the first amplitude.

[0106] Meanwhile, in the lamp according to the disclosure, the output of the sound generated by the vibration portion can be controlled by manipulating an external device. For example, the lamp according to the disclosure can be controlled by step i) measuring a distance between the external device and the vehicle or the lamp by manipulating the external device (for example, a smart key) and step ii) outputting an amplitude of the sound output by the vibration portion of the lamp in response to the distance between the external device and the vehicle or the lamp. For example, the amplitude of the sound output by the vibration portion of the lamp can be controlled to increase as the distance between the external device and the vehicle or the lamp increases.

[0107] Further, the sound output from the lamp according to the disclosure can vary depending on a distance between a surrounding pedestrian and a vehicle equipped with the lamp. For example, the lamp according to the disclosure can be controlled by step i) identifying a distance between a pedestrian around a vehicle and a vehicle equipped with the lamp or the lamp, and step ii) outputting an amplitude of a sound output by the vibration portion of the lamp in response to the distance between the vehicle or the lamp and the pedestrian. For example, the amplitude of the sound output by the vibration portion of the lamp can be controlled to increase as the distance between the vehicle or the lamp and the pedestrian decreases.

[0108] The disclosure has been described with reference to limited embodiments and drawings, but the disclosure is not limited thereto. Those skilled in the art to which the disclosure pertains can implement the disclosure in various forms within the technical spirit of the disclosure and the scope equivalent to the appended claims.

[0109] [Description of reference numerals] 10: lamp for vehicle 100: lamp housing portion 200: outer lens portion 202: curved surface area 202a: outer curved surface section 202b: inner curved surface section 202c: inner flat surface section 210: first outer lens region 220: second outer lens region 250: lens bolt region 260: lens through hole 300: lamp bezel portion 400: vibration portion 410: piezoelectric element 410a: element through hole 421: first electrode 422: second electrode 500: adhesive member 600: cover member 610: cover body 610a: damping hole 620: cover rib 630: cover extension region 630a: first through hole 700: cover coupling member 710: coupling body 720: coupling extension region 720a: second through hole 800: penetration member 820: nut member 840: bolt member D1: first direction D2: second direction

Claims

1. A lamp for a vehicle, the lamp comprising: The lamp housing portion has an internal space configured to accommodate a light source; An outer lens portion is attached to one side of the lamp housing portion and is configured to cover the internal space; The vibrating portion fixed to the outer lens portion; A cover member disposed on one side of the vibrating portion and including at least one partial region configured to face the outer lens portion, wherein the vibrating portion is located between the cover member and the outer lens portion; and A cover connecting member, the cover connecting member having one side fixed to the outer lens portion, such that the cover member is connected to the cover connecting member. The vibrating component includes: Polarized piezoelectric elements; and A first electrode and a second electrode are configured to face two opposite sides based on the polarization direction of the piezoelectric element, wherein the piezoelectric element vibrates to output sound in response to a change in the voltage applied to the first electrode and the second electrode over time. The cover component further includes: A cover body, the cover body being configured to face the outer lens portion, wherein the vibrating portion is located between the cover body and the outer lens portion, and the cover body is spaced apart from the vibrating portion; and A cover extension region, the cover extension region protruding from two opposite sides of the cover body toward the cover connecting member, and including a first through hole, and The width of the first through hole in the first direction D1 is different from the width of the first through hole in the second direction D2, which intersects the first direction D1.

2. The lamp according to claim 1, wherein, The cover connecting component includes: A connector, said connector being fixed to one side of the outer lens portion; and A connecting extension region protrudes from the peripheral region of the connector toward the cover member and has a second through hole formed in the region corresponding to the first through hole. The dimensions of the first through hole and the second through hole are different from each other.

3. The lamp according to claim 1, wherein, The first direction D1 is parallel to the direction in which the piezoelectric element faces the outer lens portion, and Wherein, the width of the first through hole in the first direction D1 is greater than the width of the first through hole in the second direction D2.

4. The lamp according to claim 3, wherein, The second through hole has a circular shape.

5. The lamp according to claim 3, wherein, The second direction D2 is a direction parallel to the direction that intersects perpendicularly with the first direction D1, and Wherein, the width of the second through hole in the second direction D2 corresponds to the width of the first through hole in the second direction D2.

6. The lamp according to claim 1, wherein, The cover component also includes: A cover rib protrudes from the cover body toward the vibrating portion, and wherein the cover rib is attached to the vibrating portion.

7. The lamp according to claim 2, further comprising: A penetrating member configured to penetrate the first through hole and the second through hole.

8. The lamp according to claim 6, wherein, The directions in which the cover extension regions formed on two opposite sides of the cover face each other are parallel to the direction of the cover rib extension.

9. The lamp according to claim 6, wherein, The cover ribs include a plurality of cover ribs spaced apart from each other in a direction that intersects with the direction in which the cover extension regions formed on two opposite sides of the cover face each other.

10. The lamp according to claim 2, wherein, The connector is inserted into the outer lens.

11. The lamp according to claim 2, wherein, The cover has one or more vibration damping holes.

12. The lamp according to claim 11, wherein, The size of the vibration damping hole is smaller than the size of the first through hole.

13. The lamp according to claim 11, wherein, The vibration damping holes are configured as multiple vibration damping holes, and In this configuration, at least some of the plurality of vibration damping holes are spaced apart from each other in a direction parallel to the direction in which the cover extension regions formed on two opposite sides of the cover face each other.

14. The lamp according to claim 11, wherein, The vibration damping holes are configured to be spaced apart from the cover ribs.

15. The lamp according to claim 1, wherein, The cover members are configured as a plurality of cover members spaced apart from each other.

16. The lamp according to claim 15, wherein, The cover member is configured as two cover members, and The two cover members face each other, and the central region of the connecting body is located between the two cover members.

17. The lamp according to claim 15, wherein, The multiple cover components are interchangeable.

18. A lamp for a vehicle, the lamp comprising: The lamp housing portion includes an internal space configured to accommodate a light source; An outer lens portion is attached to one side of the lamp housing portion and is configured to cover the internal space; A vibrating portion, fixed to the outer lens portion, and comprising: Polarized piezoelectric elements; and The first electrode and the second electrode face two opposite sides based on the polarization direction of the piezoelectric element; A cover member is disposed on one side of the vibrating portion and includes at least one partial region configured to face the outer lens portion, wherein the vibrating portion is located between the cover member and the outer lens portion; A cover connecting member, the cover connecting member having one side fixed to the outer lens portion, such that the cover member is connected to the cover connecting member; and A controller configured to control the change of voltage applied to the first and second electrodes over time, causing the piezoelectric element to vibrate to output sound.

19. The lamp according to claim 18, wherein, The cover component also includes: A cover body, the cover body being configured to face the outer lens portion, wherein the vibrating portion is located between the cover body and the outer lens portion, and the cover body is spaced apart from the vibrating portion; and The cover extension region protrudes from two opposite sides of the cover body toward the cover connecting member and includes a first through hole.

20. The lamp according to claim 19, wherein, The width of the first through hole in the first direction D1 is different from the width of the first through hole in the second direction D2, which intersects the first direction D1.

Images