CN210532183U

CN210532183U - Vehicle-mounted reading lamp

Info

Publication number: CN210532183U
Application number: CN201921858243.3U
Authority: CN
Inventors: 曹亮亮; 许金
Original assignee: Xiamen Eco Lighting Co Ltd
Current assignee: Xiamen Eco Lighting Co Ltd; Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-05-15
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses an on-vehicle reading lamp, including two lamp holders, lamp shade and with the lamp shade to closing the heat dissipation piece of being connected, two lamp holders are fixed respectively on two tip that lamp shade and heat dissipation piece closed the cylinder that forms. The lamp shade and the heat radiating piece are respectively provided with a guide rail which is used for mutual involutory connection. The LED lamp further comprises a light source plate, and the light source plate is accommodated in a cavity of a column body formed by the lamp shade and the heat dissipation piece in an involution mode. Due to the protection of the lampshade, a light source on the light source plate can be prevented from being polluted, other components are prevented from being damaged, and the service life of the lamp is effectively prolonged. The lamp shade and the heat radiating piece are assembled in a guide rail type, so that the lamp shade is easy to assemble, convenient and practical, and the lamp holder is assembled on the two end parts of the column body to prevent the lamp holder from falling off.

Description

Vehicle-mounted reading lamp

Technical Field

The utility model relates to the field of lighting, concretely relates to on-vehicle reading lamp.

Background

With the development of the automobile industry technology, various requirements of customers on automobiles are increasing, so that people are encouraged to make various automobile designs with practical functions and humanized designs. One of these designs has taken a relatively important position in automotive interiors, namely the on-board reading lights. During the daily driving of the automobile, particularly at night, the roof of the automobile is provided with a reading lamp for use when reading or lighting is needed.

In the prior art, the current vehicle-mounted reading lamp is mostly a halogen lamp or an LED lamp as a light source, the traditional halogen lamp has large heat productivity, low brightness, unsatisfactory lighting effect and short service life of the light source, and the emitted colored light is not beneficial to reading. And adopt the on-vehicle reading lamp of LED lamp on the market at present structurally mostly adopt the direct back of the body of light source board to paste heat dissipation aluminium part, and the light source board does not take any anti-touch device, and the light source is easily by dust pollution, and the metal lamp holder at both ends drops easily, consequently influences illuminating effect and the life-span of lamps and lanterns etc. easily.

In view of the above, it is necessary to design a novel vehicle-mounted reading lamp to meet the reading requirement in view of the problems of the vehicle-mounted reading lamp.

SUMMERY OF THE UTILITY MODEL

For solving present on-vehicle reading lamp light and be unfavorable for reading, the light source is easy to be polluted, the lamp holder easily drops the scheduling problem, the embodiment of this application provides an on-vehicle reading lamp, include two lamp holders, lamp shade and with the lamp shade to closing the radiating piece of being connected, two lamp holders are fixed respectively on two tip that lamp shade and radiating piece closed the cylinder that forms. The lamp cover and the heat dissipation piece are combined to form a column body, and the column body and the lamp holder are assembled, so that interaction force is generated between the column body and the lamp holder to prevent the lamp holder from falling off.

Preferably, the lamp shade and the heat sink are respectively provided with a guide rail for mutual involutory connection. The guide rail type assembly is adopted between the lampshade and the radiating piece, so that the lampshade is easy to assemble, convenient and practical.

Preferably, the LED lamp further comprises a light source plate, and the light source plate is accommodated in a cavity of a column formed by the lamp shade and the heat dissipation piece in an involutory mode. Due to the protection of the lampshade, a light source on the light source plate can be prevented from being polluted, other components are prevented from being damaged, and the service life of the lamp is effectively prolonged.

Preferably, a first mating portion and a second mating portion are formed between the lamp cover and the two ends of the heat sink, the first mating portion and the second mating portion are mated with each other, one side of the light source plate is engaged with a groove formed at an opening of the second mating portion, and the other side of the light source plate is engaged with a step formed at an opening of the first mating portion. After the lampshade and the heat dissipation piece are closed, the light source plate can be clamped between the lampshade and the heat dissipation piece, the assembly is simple, the overturning displacement of the light source plate is effectively prevented, and the light source plate is in contact connection with the heat dissipation piece, so that the heat dissipation efficiency can be improved.

Preferably, wiring holes are formed in two side faces, close to the two end portions, of the second butt joint portion, and wiring grooves are formed in the two end portions in an extending mode of the wiring holes. Thus, the lead wires at the two ends of the light source plate can be prevented from being clamped off by being too tightly matched with the two lamp holders when the lead wires extend to the wiring grooves at the two ends.

Preferably, both ends of the light source plate are respectively provided with a lead wire, and the lead wires are respectively led out from the wiring grooves and connected with the lamp cap. A complete electrical loop can thus be formed.

Preferably, the first mating portion is provided with air holes on two sides near the two ends. Therefore, the light attenuation phenomenon caused by overlong working time of the light source can be avoided, and a better lighting effect is kept.

Preferably, a plurality of heat dissipation fins are arranged on one side of the second involution part away from the opening of the first involution part. The heat dissipation fins can increase the heat dissipation area, thereby improving the heat dissipation effect and saving the cost.

Preferably, the lamp cap is an SV8.5 metal lamp cap. The SV8.5 metal lamp holder can realize the tight fit between the lampshade and the heat radiating piece.

Preferably, the light source board is provided with a light source module and a driving module connected with the light source module, the light source module comprises a plurality of LED light sources, and the driving module comprises a rectifying module and a current-limiting resistor. The light source module and the driving module are arranged on the light source board, so that space can be saved, the rectifying module can convert alternating current with lower voltage into unidirectional pulsating direct current through the field effect tube, and the LED light source is simple in process and low in price.

The embodiment of the application discloses on-vehicle reading lamp, including two lamp holders, lamp shade and with the lamp shade to closing the radiating piece of being connected, two lamp holders are fixed respectively on two tip that lamp shade and radiating piece closed the cylinder that forms in order to avoid the lamp holder to drop. The light source plate is fixedly arranged in a column formed by the involution of the lampshade and the radiating piece, thereby preventing the light source from being polluted. The light source board is in contact connection with the radiating piece, and the radiating piece is provided with the fins, so that the radiating efficiency can be effectively improved, and the cost is saved. And both ends of the lampshade and the heat dissipation part are respectively provided with the air holes and the wiring grooves, so that the light attenuation caused by overlong working time of the light source and the clamping breakage of the lead wire after the lead wire penetrates out of the heat dissipation part can be avoided. The vehicle-mounted reading lamp is simple in structure, convenient to assemble, low in cost, good in lighting effect and capable of meeting reading requirements compared with a traditional reading lamp.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

Fig. 1 is a cross-sectional view of an on-board reading lamp according to an embodiment of the present invention;

fig. 2 is a perspective view i of the vehicle-mounted reading lamp according to the embodiment of the present invention;

fig. 3 is a schematic view i of a lamp cover and a heat sink of the vehicle-mounted reading lamp according to the embodiment of the present invention;

fig. 4 is a schematic view ii of a lamp cover and a heat sink of the vehicle-mounted reading lamp according to the embodiment of the present invention;

fig. 5 is a perspective view ii of the on-board reading lamp according to the embodiment of the present invention;

fig. 6 is an exploded view of the reading lamp of the vehicle mounted to the embodiment of the present invention;

fig. 7 is a circuit diagram of an on-vehicle reading lamp according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as "top," "bottom," "left," "right," "up," "down," etc., is used with reference to the orientation of the figures being described. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is used for purposes of illustration and is in no way limiting. It is to be understood that other embodiments may be utilized and logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

Fig. 1 shows one of them vehicle-mounted reading lamp in the embodiment of the present invention, including two lamp holders 1, lamp shade 2 and heat sink 3, wherein the lamp shade 2 and heat sink 3 can be connected to each other, as shown in fig. 2, two lamp holders 1 are respectively fixed on two ends 41 of the cylinder 4 formed by the lamp shade 2 and the heat sink 3 by combining, so that an interaction force is generated between the cylinder 4 and the lamp holders 1 due to the tight fit to prevent the lamp holders 1 from falling off. In the preferred embodiment, the lamp housing 2 and the heat sink 3 are semicircular at both ends, and form a column 4 as a whole circle after assembly, and both ends 41 are respectively assembled with the lamp cap 1. The burner may then be an SV8.5 metal burner. The SV8.5 metal lamp holder is the existing lamp holder, is convenient to purchase and can reduce the production cost. In other alternative embodiments, the cross sections of the two ends of the lamp shade 2 and the heat sink 3 are arc shapes with mutually matched opening sizes, so that the lamp shade 2 and the heat sink 3 are connected in an involutory manner to form a column 4, and the cross section of the column 4 is mutually matched with the cross section of the lamp holder 1 to facilitate the fixed connection of the lamp holder 1. The shape of the lamp housing 2 and the heat sink 3 at both ends depends on the shape of the lamp cap 1, and may be designed according to the choice of the lamp cap 1. The cover body of the lampshade 2 and the heat dissipation structure of the heat dissipation piece 3 can be selectively designed according to other requirements, so that the practicability is high, and the requirements of various vehicle types and vehicle interior decorations on the vehicle-mounted reading lamp can be met.

In a specific embodiment, a light source board 6 is further disposed between the lamp shade 2 and the heat sink 3, and the light source board 6 is accommodated in a cavity of the column 4 formed by the lamp shade 2 and the heat sink 3 in a matching manner. Therefore, the light source plate 6 is not exposed, the light source on the light source plate 6 is prevented from being polluted, other components are prevented from being damaged, and the service life of the lamp is effectively prolonged. In a preferred embodiment, a first mating portion 21 and a second mating portion 31 are formed between the lamp housing 2 and the two end portions 41 of the heat sink 3, and as shown in fig. 3, one side of the light source plate 6 is engaged with the recess 32 formed at the opening of the second mating portion 31, and the other side of the light source plate 6 is engaged with the step 22 formed at the opening of the first mating portion 21. Therefore, a guide rail 5 structure used for mutual involution and connection can be formed among the lampshade 2, the radiating piece 3 and the light source plate 6, in the assembly structure, the lampshade 2 and the radiating piece 3 are respectively assembled with the light source plate 6 simply, and the involution and connection guide rail 5 structure can be formed. And lamp shade 2 and heat dissipation piece 3 can fix light source board 6 in the centre after closing, can avoid light source board 6 to take place the upset displacement. The light source board 6 is engaged in the groove 32 formed by the second engaging portion 31 of the heat sink 3, which means that the light source board 6 and the heat sink 3 can be connected in contact with each other, thereby effectively improving the heat dissipation efficiency. In other alternative embodiments, the light source plate 6 may be only clamped in the groove 32 formed at the opening of the second mating portion 31, or only clamped on the step 22 formed at the opening of the first mating portion 21, and the mating connection is performed by forming the structure of the guide rail 5 at another position between the lamp shade 2 and the heat sink 3.

In the preferred embodiment, the lamp housing 2 is a transparent lamp housing, and the light source on the light source plate 6 faces the side of the lamp housing.

In a particular embodiment, the guide rails 5 are arranged at mutually opposite openings of the lamp shade 2 and the heat sink 3. In a preferred embodiment, the guide rails 5 may be respectively disposed at openings at two ends of the lamp cover 2 and the heat sink 3, as shown in fig. 3 and 4, the openings at two ends 41 of the lamp cover 2 and the heat sink 3 respectively form L-shaped guide rails which are matched with each other, that is, a first protrusion is formed at an outer edge of the opening at the two ends 41 of the second mating portion 31, and a second protrusion matched with the first protrusion is formed at an inner edge of the opening at the two ends 41 of the first mating portion 21. Of course, the positions of the first and second protruding edges may be reversed. By adopting the mode, the lampshade 2 and the radiating piece 3 are easy to assemble and connect, convenient and practical, and easy to process and manufacture, and the assembled lampshade 2 and the assembled radiating piece 3 can be further fixedly connected with the lamp cap 1.

In a specific embodiment, as shown in fig. 5, the two side surfaces 33 of the second mating portion 31 near the two end portions 41 are provided with wire connection holes 34, and the wire connection holes 34 are provided with wire connection slots 43 extending on the two end portions 41. Lead wires are respectively arranged at two ends of the light source plate 6, and the lead wires are respectively led out from the wiring grooves 43 and connected with the lamp holder 1. In a preferred embodiment, the wiring groove 43 is a groove extending from the side surface 33 in the direction of the lamp cap 1. Therefore, it is possible to prevent the lead wires at both ends of the light source board 6 from being pinched off by being too closely fitted to the two bases 1 when the lead wires extend to the wiring grooves 43 at both end portions 41. In other alternative embodiments, a plurality of heat dissipation fins are disposed on a side of the second mating portion 31 away from the opening of the first mating portion 21. The grooves are formed among the radiating fins, so that the radiating area can be increased, the radiating effect is improved, and the cost can be saved. As shown in fig. 2, ventilation holes 24 are formed in both side surfaces 23 of the first engaging portion 21 near both end portions 41. Therefore, air enters the cavity from the air holes 24, the light attenuation phenomenon caused by overlong working time of the light source can be avoided, and a good lighting effect is kept.

As shown in fig. 6, the light source board 6 is provided with a light source module 61 and a driving module 62 connected to the light source module 61, and the light source module 61 and the driving module 62 are both arranged on the light source board 6, so that space can be saved. The vehicle-mounted reading lamp uses a low-voltage power supply. In a preferred embodiment, the light source module 61 comprises a plurality of LED light sources, and the driving module 62 comprises a rectifying module comprising a field effect transistor. As shown in the circuit diagram of fig. 7, two field effect transistors (p-channels) are provided at both ends of the plurality of LED light sources. The rectification module converts alternating current with lower voltage into unidirectional pulsating direct current through a field effect transistor (MOS tube), thereby having the rectification effect. Meanwhile, a current limiting resistor R1 is connected in series in the circuit, so that the current limiting function can be realized, and the element can be prevented from being damaged by impact current. Preferably, the current limiting resistor is 20 Ω and there are 4 LED sources all connected in series, with current going from fet Q1 through the LED sources to fet Q2 to form a loop when the voltage is positive given a 12V supply. When the voltage is negative, the current is looped from the FET Q2 to the FET Q1 through the LED light source. In order to turn on the p-channel fet, the fet Q2 needs to be pulled low to the gate of the fet Q1, and similarly, the fet Q1 needs to be pulled high to the source of the fet Q2. Therefore, the circuit shown in fig. 7 can achieve a good rectification effect, and is simple and low in cost.

The embodiment of the application provides a vehicle-mounted reading lamp, including two lamp holders, lamp shade and with the lamp shade to closing the radiating piece of being connected, two lamp holders are fixed respectively on two tip that lamp shade and radiating piece closed the cylinder that forms, prevent that the lamp holder from droing. The light source plate is fixedly placed in a cavity of a column body formed by the lamp shade and the heat dissipation piece in an involution mode, and therefore the light source is prevented from being polluted. The light source board is in contact connection with the radiating piece, and the radiating fins are arranged on the radiating piece, so that the radiating efficiency can be effectively improved, and the cost is saved. And both ends at lamp shade and radiating piece are provided with bleeder vent and wiring groove respectively, can avoid the light decay phenomenon to take place and the lead wire is pressed from both sides behind the radiating piece after the light source operating time overlength leads to. The vehicle-mounted reading lamp is simple in structure, convenient to assemble, low in cost, good in lighting effect and suitable for interior trim of different vehicle types.

While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

The word 'comprising' in this application does not exclude the presence of elements or steps other than those listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.

Claims

1. The utility model provides a vehicle-mounted reading lamp, its characterized in that, including two lamp holders, light source board, lamp shade and with the lamp shade closes the radiating piece of being connected, two lamp holders are fixed respectively the lamp shade with on two tip of the cylinder that the radiating piece formed closing, the light source board is held the lamp shade with the cavity of the cylinder that the radiating piece formed closing.

2. The vehicle reading lamp of claim 1, wherein the lamp cover and the heat sink each have a guide rail for mating connection with each other.

3. The vehicle-mounted reading lamp of claim 1, wherein a first mating portion and a second mating portion are formed between the lamp cover and the two ends of the heat sink, the first mating portion and the second mating portion are mated with each other, one side of the light source board is clamped in a groove formed at an opening of the second mating portion, and the other side of the light source board is clamped on a step formed at an opening of the first mating portion.

4. The vehicle reading lamp of claim 3, wherein the second mating portion has wiring holes formed on both sides thereof adjacent to the two end portions, and the wiring holes have wiring grooves formed on the two end portions.

5. The vehicle-mounted reading lamp as claimed in claim 4, wherein the light source board is provided with leads at both ends thereof, and the leads are led out from the wiring grooves and connected to the lamp cap.

6. The vehicle reading light of claim 3, wherein the first engaging portion has air holes formed on both sides thereof near the two ends.

7. The vehicle-mounted reading lamp of claim 3, wherein a plurality of heat dissipation fins are disposed on a side of the second mating portion away from the opening of the first mating portion.

8. The vehicle reading lamp of any of claims 1-7, wherein the lamp head is an SV8.5 metal lamp head.

9. The vehicle-mounted reading lamp according to any one of claims 1 to 7, wherein a light source module and a driving module connected with the light source module are arranged on the light source board, the light source module comprises a plurality of LED light sources, and the driving module comprises a rectifying module and a current limiting resistor.