CN215723000U - Lighting device and vehicle lamp - Google Patents

Abstract

The utility model provides a lighting device and a vehicle lamp, the lighting device includes: a light emitting element, a light guide, a housing, a substrate, a seal ring, and a wire harness; the light guide piece is rod-shaped, one end of the light guide piece is an incident end, the other end of the light guide piece is an emergent end, the shell is provided with an installation hole, and the light guide piece is installed in the installation hole; the shell and the substrate are hermetically connected through a sealing ring, the shell and the substrate form a cavity, the light-emitting element is arranged in the cavity, and the incident end of the light guide piece is opposite to the light-emitting element; the sealing ring is provided with a wire passing hole, the wire harness penetrates through the wire passing hole to be electrically connected with the light-emitting element, and the wire harness is hermetically connected with the wire passing hole. This scheme just can realize the sealed of casing, base plate and pencil junction through the sealing washer, simple structure, and waterproof dustproof effectual.

Description

Lighting device and vehicle lamp

Technical Field

The utility model relates to the technical field of illumination, in particular to an illumination device and a vehicle lamp.

Background

Tungsten filament lamps are a common light source for automotive lighting and are gradually eliminated due to their low brightness, high energy consumption and short service life. In order to improve the illumination brightness and reduce the energy consumption, the LED car lamp is widely used for car illumination. However, since the conventional LED vehicle lamp generally has a plurality of LED chips mounted on opposite sides of the heat dissipating lamp panel, the light emitting characteristics of the LED vehicle lamp are different from those of a tungsten lamp emitting light at 360 °. To this end, researchers have devised a filament-simulated LED lighting device capable of emitting light in 360 °, by coupling light emitted from an LED into a rod-shaped light guide element and emitting the light at the surface of the rod-shaped light guide element. The filament-simulated LED lighting device has the same light-emitting characteristic as a tungsten filament lamp, and has the advantages of high brightness, long service life and the like.

The structure of the filament-simulated LED lighting device is different from that of the existing LED car lamp, generally, the filament-simulated LED lighting device is provided with an LED chip arranged on a substrate, a rod-shaped light guide element is arranged in a mounting hole of a shell, and the substrate is connected with the shell so as to enable the LED chip to be aligned to the light inlet end of the light guide element. On one hand, the substrate and the shell are two separated parts, a gap is reserved at the joint of the substrate and the shell, and on the other hand, the substrate is provided with a through hole for enabling a wire harness for providing electric energy to penetrate through the through hole on the substrate to be electrically connected with the LED chip. When the simulation filament LED lighting device is installed on an automobile lamp, the shell containing an LED chip and the substrate are located outside the automobile lamp, and dust and moisture can enter the simulation filament LED lighting device through a gap between the substrate and the shell and a through hole in the substrate to influence the normal use of the simulation filament LED lighting device because the dustproof and waterproof device is not arranged outside the automobile lamp of part of automobile models. Therefore, it is necessary to provide a dustproof and waterproof filament-simulated LED lighting device.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a lighting device to solve the above problems.

The present invention provides a lighting device, including: a light emitting element, a light guide, a housing, a substrate, a seal ring, and a wire harness; the light guide piece is rod-shaped, one end of the light guide piece is an incident end, the other end of the light guide piece is an emergent end, the shell is provided with an installation hole, and the light guide piece is installed in the installation hole; the shell and the substrate are hermetically connected through a sealing ring, the shell and the substrate form a cavity, the light-emitting element is arranged in the cavity, and the incident end of the light guide piece is opposite to the light-emitting element; the sealing ring is provided with a wire passing hole, the wire harness penetrates through the wire passing hole to be electrically connected with the light-emitting element, and the wire harness is hermetically connected with the wire passing hole.

In one embodiment, the sealing ring is made of an elastic material.

In one embodiment, the wire harness is sleeved with a connecting piece, the connecting piece is inserted into the wire through hole, and the connecting piece is hermetically connected with the wire harness and the wire through hole.

In one embodiment, the lighting device further includes a fixing pin, corresponding fixing holes are formed in the connecting member and the sealing ring, fixing grooves corresponding to the fixing holes are respectively formed in the housing and the substrate, the fixing pin is inserted into the fixing holes, and two ends of the fixing pin are respectively limited to the two fixing grooves.

In one embodiment, a protective sleeve is sleeved over the wiring harness.

In one embodiment, a light emitting element is mounted on the substrate.

In one embodiment, the substrate is further provided with a bonding pad, the bonding pad and the light-emitting element are arranged on the same surface of the substrate, the bonding pad is located in the cavity, the bonding pad is electrically connected with the light-emitting element, and the wire harness penetrates through the wire through hole and then is welded with the bonding pad.

In one embodiment, the lighting device further comprises a heat dissipation assembly arranged on one side of the substrate, which faces away from the housing, the heat dissipation assembly comprises a heat sink and a fan, the heat sink is provided with a plurality of heat dissipation fins arranged annularly, and the fan is arranged among the plurality of heat dissipation fins and is electrically connected with the wire harness.

In one embodiment, the shell and the base plate are fixedly connected through screws, and the sealing ring is provided with position avoiding holes for the screws to penetrate through.

In one embodiment, the seal ring comprises a connecting section and a body section which are connected, the thickness of the connecting section is larger than that of the body section, and the wire through hole is formed in the connecting section.

In one embodiment, the housing and/or the substrate are provided with a limiting groove, and the connecting section is inserted into the limiting groove.

The utility model also provides a vehicle lamp, which comprises a reflecting bowl, a waterproof pad and the lighting device; the light reflecting bowl is provided with an assembling hole, the illuminating device is arranged in the assembling hole so that the emergent end of the light guide piece is positioned in the light reflecting bowl, and the waterproof pad is arranged between the light reflecting bowl and the illuminating device in a sealing mode.

Compared with the prior art, the lighting device provided by the utility model has the advantages that the shell provided with the light guide part is hermetically connected with the substrate through the sealing ring, the light-emitting element is arranged in the cavity formed by the shell and the substrate, the wire passing hole is further formed in the sealing ring, the wire harness penetrates through the wire passing hole to be electrically connected with the light-emitting element, and the wire harness and the wire passing hole are sealed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of a lighting device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a sealing ring and a wire harness in a lighting device according to an embodiment of the present invention;

fig. 3 is a schematic view showing an assembling structure of a wire harness in the lighting device according to the embodiment of the present invention;

fig. 4 is a cross-sectional view of a lighting device according to an embodiment of the present invention.

Detailed Description

In order to facilitate an understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the examples of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and fig. 2, fig. 1 is an exploded schematic view of a lighting device 100 according to an embodiment of the present invention, and fig. 2 is a schematic view of a sealing ring 150 and a wire harness 160 in the lighting device 100 according to the embodiment of the present invention. The lighting device 100 includes a light emitting element 110, a substrate 120, a case 130, a light guide 140, a sealing ring 150, and a wire harness 160; the light guide 140 is rod-shaped, one end of the light guide 140 is an incident end, the other end is an exit end, the housing 130 has a mounting hole, and the light guide 140 is mounted in the mounting hole; the housing 130 and the substrate 120 are hermetically connected by a sealing ring 150, the housing 130 and the substrate 120 form a cavity, the light emitting element 110 is installed in the cavity, and the incident end of the light guide 140 is opposite to the light emitting element 110; the sealing ring 150 is provided with a wire through hole 151, the wire harness 160 passes through the wire through hole 151 to be electrically connected with the light emitting element 110, and the wire harness 160 and the wire through hole 151 are sealed.

Compared with the prior art, the lighting device 100 provided by the utility model has the advantages that the shell 130 provided with the light guide member 140 is hermetically connected with the substrate 120 through the sealing ring 150, the light-emitting element 110 is arranged in the cavity formed by the shell 130 and the substrate 120, the sealing ring 150 is further provided with the wire through hole 151, the wiring harness 160 passes through the wire through hole 151 to be electrically connected with the light-emitting element 110, and the wiring harness 160 and the wire through hole 151 are sealed.

Specifically, in the present embodiment, the light emitting element 110 is used for emitting illumination light, and the light emitting element 110 may be a light emitting diode LED or a laser diode LD. The light emitting elements 110 provide the illumination device 100 with raw illumination light, and the number of the light emitting elements 110 may be determined according to the brightness requirement of the illumination device 100, for example, in a specific embodiment, the illumination device 100 includes 4 LEDs emitting white light, and the 4 LEDs are arranged in a matrix of 2 × 2.

The substrate 120 is substantially in the shape of a circular plate, the housing 130 includes a base 131 and a fixing portion 132, the base 131 is in a cone shape or a frustum shape, the fixing portion 132 is in a column shape, the fixing portion 132 is connected to the top of the base 131, the fixing portion 132 of the housing 130 is provided with a mounting hole extending along the axial direction thereof, the mounting hole is used for mounting the light guide 140, the bottom side (the side departing from the fixing portion 132) of the base 131 of the housing 130 is provided with a groove, the substrate 120 is connected to the bottom side of the base 131 of the housing 130, the sealing ring 150 is clamped between the housing 130 and the substrate 120, so that the housing 130 and the substrate 120 form a cavity, and the light emitting element 110 is mounted in the cavity. Specifically, the light emitting element 110 is disposed on the substrate 120, and the light emitting element 110 may be disposed directly on the substrate 106, or the light emitting element 110 may be first mounted on a ceramic substrate, and then the ceramic substrate may be mounted on the substrate 120.

Referring to fig. 3, a pad 121 is further disposed on the substrate 120, the pad 121 and the light emitting element 110 are disposed on the same surface of the substrate 120, the pad 121 is located in a cavity formed by the substrate 120 and the housing 130, the pad 121 is electrically connected to the light emitting element 110 through a printed circuit disposed on the surface of the substrate 120, and the wire harness 160 is soldered to the pad 121 after passing through the wire through hole 151, so that the wire harness 160 is electrically connected to the light emitting element 110, thereby providing the light emitting element 110 with electrical energy required for emitting light. The number of the pads 121 is determined according to the number of the light emitting elements 110. In this embodiment, the bonding pad 121 and the light emitting element 110 are disposed on the same surface of the substrate 120, and the bonding pad 121 and the light emitting element 110 are both disposed in the cavity formed by the substrate 120 and the housing 130, and in the scheme of the present invention, a through hole for electrically connecting the light emitting element 110 is not required to be disposed on the substrate 120, and the connection between the substrate 120, the housing 130, and the wiring harness 160 can be sealed only by one sealing ring, thereby simplifying the complexity of the dustproof and waterproof structure.

Since the light emitting element 110 generates heat during operation and light emission, the substrate 120 is preferably made of a material having good thermal conductivity, such as a copper material or an aluminum material, so that the heat can be discharged in time. The housing 130 may be made of a metal material, such as an aluminum material or an alloy of aluminum, so that the housing 102 has both excellent structural stability and easy processing.

The light guide member 140 is a rod-shaped transparent light guide member, and may be made of transparent materials such as transparent acrylic resin, Polycarbonate (PC), polymethyl methacrylate (PMMA), glass, or quartz, and the light guide member 140 has a high refractive index, so that light can be transmitted in the light guide member 140 in a total reflection manner. The light guide 140 is inserted into the mounting hole of the housing 130, and one end of the light guide 140 is an incident end and the other end is an emitting end. The incident end of the light guide 140 is opposite to the light emitting element 110, light emitted from the light emitting element 110 is coupled into the light guide 140 through the incident end of the light guide 140, and the light is transmitted in the light guide 140 by total reflection and exits from the exit end of the light guide 140. The exit end of the light guide 140 may be conical, parabolic, wedge-shaped, or groove-shaped, so that the light emitted from the light exit surface of the light guide rod 103 can achieve a predetermined light distribution. In an embodiment, the light guide 140 may further have a rough scattering structure at the exit end, and the white light emitted from the light emitting element 110 is scattered when reaching the scattering structure on the exit surface by the conduction of the light guide rod 103, so as to achieve a wider light distribution. In other embodiments, the light emitting element 110 can also emit light of other colors, for example, the light emitting element 110 is a blue LD, and the surface of the emitting end of the light guide 140 is provided with a yellow fluorescent material for absorbing part of the blue light and emitting yellow light, so that the unabsorbed blue light and the emitted yellow light are mixed into white emitting light. Of course, the yellow fluorescent material may also be disposed inside the light guide 140.

The seal ring 150 is substantially annular and interposed between the housing 130 and the base plate 120, and the seal ring 150 is made of an elastic material, for example, an elastic material such as elastic rubber or elastic silicone. The sealing ring 15 has a certain elasticity and a certain mechanical strength. When the fixed connection between the housing 130 and the substrate 120 is completed, the distance between the housing 130 and the substrate 120 is smaller than the initial thickness of the sealing ring 150, and the sealing ring 150 is compressed to seal the connection between the housing 130 and the substrate 120. The sealing ring 150 is further provided with a wire passing hole 151, the wire passing hole 151 penetrates through the inner side and the outer side of the sealing ring 150, the wire harness 160 penetrates through the wire passing hole 151 to be electrically connected with the light emitting element 110 in the cavity, and the wire harness 160 is hermetically connected with the wire passing hole 151. In order to ensure the sealing connection between the wire harness 160 and the wire passing hole 151, the size of the wire passing hole 151 may be slightly smaller than that of the wire harness 160, so that the wire harness 160 can smoothly pass through the wire passing hole 151, and the sealing ring 150 can tightly wrap the wire harness 160 under the action of elastic force, thereby achieving the sealing connection between the wire harness 160 and the wire passing hole 151. Waterproof glue can be coated at the joint between the wire harness 160 and the wire passing hole 151, so that the wire harness 160 and the wire passing hole 151 are connected in a sealing mode.

Referring to fig. 2, the wire harness 160 is sleeved with a connecting member 161, the connecting member 161 has a size larger than that of the wire harness 160, in this embodiment, the connecting member 161 is rectangular, the wire through hole 151 also has a rectangular shape matching the connecting member 161, the connecting member 161 is inserted into the wire through hole 151, and the connecting member 161, the wire harness 160 and the wire through hole 151 are hermetically connected. The connecting piece 161 can be made of PC, ABS, PP and other engineering plastics, the connecting piece 161 and the wiring harness 160 can be processed into a whole in an injection molding mode, and after injection molding is completed, the joint of the connecting piece 161 and the wiring harness 160 needs to meet the corresponding waterproof grade requirement, so that sealing connection between the connecting piece 161 and the wiring harness 160 is realized. The shape of the connecting member 161 is not limited to a rectangle, and may be a circle, an ellipse, or another polygon. The size of the wire through hole 151 is slightly smaller than that of the connecting member 161, so that the connecting member 161 is inserted into the wire through hole 151, and the sealing ring 150 is tightly wrapped around the connecting member 161 under the action of elastic force, thereby achieving the sealing connection between the connecting member 161 and the wire through hole 151. Certainly, waterproof glue can be coated at the joints between the wire harness 160 and the connecting member 161 and between the wire through holes 151, so that the connecting member 161 and the wire harness 160 and the wire through holes 151 are hermetically connected. In this embodiment, by providing the connecting member 161 on the wire harness 160, the connecting member 161 is inserted into the wire passing hole 151, so that the assembly between the wire harness 160 and the sealing ring 150 is completed, the assembly is convenient, the operation is easy, and the sealing effect of the connection process can be ensured.

The harness 160 is further sleeved with a protective sleeve 162, and the protective sleeve 162 can be made of heat shrink tube or snakeskin net. The harness 160 is sleeved with the protective sleeve 162, so that the outgoing line can be protected, and the harness 160 is prevented from being scratched, abraded and the like.

When the lighting device 100 is assembled to the full lamp, the vibration of the wire harness 160 or the vibration of the lighting device 100 may impair the sealing effect between the wire harness 160 and the sealing ring 150 for the full lamp in a moving state. In order to solve the above problem, please refer to fig. 2, fig. 3 and fig. 4 together, the lighting device 100 further includes a fixing pin 170, corresponding fixing holes 190 are disposed on the connecting member and the sealing ring 150, fixing grooves corresponding to the fixing holes 190 are disposed on the housing 130 and the substrate 120, respectively, a length of the fixing pin 170 is greater than a sum of lengths of the connecting member and the fixing holes 190 on the sealing ring 150, the fixing pin 170 is inserted into the fixing holes 190, and two ends of the fixing pin 170 are respectively limited in the two fixing grooves of the housing 130 and the substrate 120. In this embodiment, the fixing pin 170 is provided to fix the wire harness 160 and the sealing ring 150 between the housing 130 and the substrate 120, so that the wire harness 160 and the sealing ring 150 are prevented from being displaced when the lighting device 100 is in a motion state, the structural stability of sealing between the wire harness 160 and the sealing ring 150 is improved, and the service life of the lighting device 100 can be prolonged.

In one embodiment, the sealing ring 150 includes a connecting section 152 and a body section 153 connected to each other, the connecting section 152 and the body section 153 are connected to form a ring shape, wherein the connecting section 152 has a thickness greater than that of the body section 153, the wire hole 151 is disposed in the connecting section 152, and the wire hole 151 penetrates through an inner wall and an outer wall of the connecting section 152. Correspondingly, the housing 130 and/or the substrate 120 are provided with a limiting groove, and the position of the limiting groove corresponds to the connecting section 152. When the sealing ring 150 is sandwiched between the housing 130 and the substrate 120, the connecting section 152 is inserted into the limiting groove. In this embodiment, the connection section 152 having a relatively thick thickness is disposed on the sealing ring 150, and the connection section 152 is inserted into the limiting groove on the housing and/or the substrate, so that the sealing ring 150 can be prevented from being displaced when the lighting device 100 is in a moving state, and the wire through hole 151 is disposed on the connection section 152, so that the sealing ring 150 has better structural reliability.

The housing 130 and the substrate 120 may be fixedly connected by screws, for example, a threaded hole may be provided on a side of the housing 130 facing the substrate 120, a through hole corresponding to the threaded hole may be provided on the substrate 120, and a clearance hole 154 corresponding to the threaded hole and allowing a screw to pass therethrough may be provided on the sealing ring 150. The screws pass through the through holes of the substrate 120 and the clearance holes 154 of the seal ring 150 to be connected with the threaded holes of the housing 130, thereby fixedly connecting the housing 130 and the substrate 120. In other embodiments, the housing 130 and the substrate 120 may be fixedly connected by welding, gluing, snapping, or the like.

The lighting device 100 further includes a heat dissipation assembly 180 disposed on a side of the substrate 120 away from the housing 130, where the heat dissipation assembly 180 includes a heat sink having a plurality of annularly disposed heat dissipation fins and a fan disposed between the plurality of heat dissipation fins, that is, the fan is surrounded by the plurality of heat dissipation fins. The wiring harness 160 is also electrically connected to the fan after passing through the sealing ring 150 to provide the fan with the power required for rotation. The heat generated by the light emitting element 110 is transferred to the plurality of heat dissipation fins of the heat sink via the substrate 120, and the fan blows air flow to dissipate the heat. The heat dissipation assembly 170 has a compact structure, a small volume and an excellent heat dissipation effect.

The utility model also provides a vehicle lamp which comprises a reflecting bowl, a waterproof pad and each lighting device in the embodiment; the light reflecting bowl is provided with an assembling hole, the illuminating device is arranged in the assembling hole so that the emergent end of the light guide piece is positioned in the light reflecting bowl, and the waterproof pad is arranged between the light reflecting bowl and the illuminating device in a sealing mode. The illuminating device of the vehicle lamp and the joint of the illuminating device and the reflecting bowl can realize good sealing connection, and the waterproof and dustproof effects are good.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (12)

1. An illumination device, comprising: a light emitting element, a light guide, a housing, a substrate, a seal ring, and a wire harness;

the light guide piece is in a rod shape, one end of the light guide piece is an incident end, the other end of the light guide piece is an emergent end, the shell is provided with an installation hole, and the light guide piece is installed in the installation hole; the shell and the substrate are hermetically connected through the sealing ring, a cavity is formed by the shell and the substrate, the light-emitting element is installed in the cavity, and the incident end of the light guide piece is opposite to the light-emitting element; the wire-passing hole is formed in the sealing ring, the wire harness penetrates through the wire-passing hole to be electrically connected with the light-emitting element, and the wire harness is hermetically connected with the wire-passing hole.

2. A lighting device as recited in claim 1, wherein said sealing ring is formed from an elastomeric material.

3. The lighting device as claimed in claim 1, wherein the wire harness is sleeved with a connecting member, the connecting member is inserted into the wire through hole, and the connecting member is hermetically connected with the wire harness and the wire through hole.

4. A lighting device as recited in claim 3, wherein the lighting device further comprises a fixing pin, the connecting member and the sealing ring are provided with corresponding fixing holes, the housing and the substrate are respectively provided with fixing grooves corresponding to the fixing holes, the fixing pin is inserted into the fixing holes, and two ends of the fixing pin are respectively limited to the two fixing grooves.

5. A lighting device as recited in claim 1, wherein said wiring harness is provided with a protective sleeve.

6. A lighting device as recited in claim 1, wherein said light-emitting element is mounted on said substrate.

7. The lighting device according to claim 6, wherein a bonding pad is further disposed on the substrate, the bonding pad and the light emitting element are disposed on the same surface of the substrate, the bonding pad is located in the cavity, the bonding pad is electrically connected to the light emitting element, and the wire harness is soldered to the bonding pad after passing through the wire passing hole.

8. The lighting device as claimed in claim 1, further comprising a heat dissipation assembly disposed on a side of the substrate facing away from the housing, wherein the heat dissipation assembly comprises a heat sink having a plurality of heat dissipation fins arranged in a ring shape, and a fan disposed between the plurality of heat dissipation fins and electrically connected to the wire harness.

9. The lighting device as claimed in claim 1, wherein the housing and the substrate are fixedly connected by a screw, and the sealing ring is provided with a clearance hole for the screw to pass through.

10. The illumination device as recited in claim 1, wherein the sealing ring comprises a connecting section and a body section, the connecting section has a thickness greater than that of the body section, and the wire hole is disposed in the connecting section.

11. The lighting device according to claim 10, wherein a limiting groove is formed on the housing and/or the substrate, and the connecting section is inserted into the limiting groove.

12. A vehicle light, comprising: a light reflecting bowl, a waterproof mat and a lighting device according to any one of claims 1-11;

the light guide member is provided with a light guide hole, the light guide member is provided with an assembling hole, the lighting device is arranged in the assembling hole so that the emergent end of the light guide member is positioned in the light guide member, and the waterproof gasket is arranged between the light guide member and the lighting device in a sealing manner.

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