TW202227750A - Light source module for illumination device - Google Patents

Abstract

A light source module for an illumination device is provided. The illumination device comprises a reflective surface. The reflective surface is able to be compatible with a halogen filament, which defines a filament length and a filament diameter. The light source module includes a substrate assembly, a first lighting group, and a second lighting group. The substrate assembly has a first surface and a second surface. The first lighting group is disposed on the first surface of the substrate assembly. The first lighting group has a first lighting surface. The first lighting surface has a first long side length, and the first long side length has positive correlation with the filament length. The second lighting group is disposed on the second surface of the substrate assembly. The second lighting group has a second lighting surface. The second lighting surface has a second long side length, and the second long side length has positive correlation with the filament length. The first lighting surface and the second lighting surface define a light source module thickness, and the light source module thickness has positive correlation with the filament diameter.

Description

Light source module for lighting device

The present invention relates to a light source module for a lighting device, in particular to a light source module for a vehicle lighting device.

Different from general lighting, vehicle lighting must consider the use situation and safety of the vehicle when driving, so it has its own special specifications and regulatory restrictions. Among them, in the area illuminated by the headlight, the boundary line between the bright area and the dark area is called the cut-off line, and if the cut-off line is blurred, it will lead to improper distribution of illumination, that is, the bright area is not bright enough and dark. If the area is not dark enough, the illumination in the field of vision in front of the driver is insufficient, and the area that does not need lighting is too bright, even causing glare to oncoming vehicles.

As shown in FIG. 1 , in the conventional vehicle lamp structure 1 , a light source 13 is disposed at the center of the lampshade 11 , and the light source 13 is most commonly selected from a halogen lamp in the early stage. The halogen lamp uses the halogen filament 131 to emit light all around, and the light generated by the halogen filament 131 is reflected by the lampshade 11 to form an illumination area A in front of the vehicle lamp. The lampshade 11 designed in the conventional lamp structure 1 is used to match the halogen filament 131 . As shown in FIG. 2 , the halogen filament 131 has a filament length L _H and a filament diameter _DH . Therefore, it is hoped that a clear cut-off line can be formed in the lighting area A so as to meet the design specifications and regulatory restrictions of the vehicle lamp.

With the evolution of technology, the light source options on the market today are not limited to halogen lamps. Among them, Light Emitting Diode (LED) has the advantages of higher lumen output, better lighting efficiency and longer service life per unit wattage, and has become a better choice for vehicle light sources. However, when automotive lighting manufacturers or consumers want to change to a different light source, since the light-emitting diode is a surface light source, the optical design of the corresponding lighting device is different from the halogen light source that emits nearly 360 degrees, so it is impossible to simply To replace halogen lamps with LED light source modules, automotive lighting manufacturers need to additionally design the light path and develop molds suitable for LED light source modules, while consumers need to replace the entire vehicle lighting device. For the industry or consumers, it is an additional cost, which hinders the replacement of different light sources.

In addition, in the existing light-emitting diode light source module, each light-emitting diode package includes the upper half of the die and the lower half of the ceramic substrate, and the heat generated by the light-emitting diode die is conducted through the ceramic substrate. However, this kind of package will increase the thickness of the light source module and increase the difference between the light emitting diode light source module and the conventional halogen light source. Optical design differences.

In view of this, designing a light source module using light-emitting diodes, which can not only match the optical design of the existing halogen lamps, increase the illuminance of the lighting area, provide a clear cut-off line, and effectively and uniformly dissipate heat, is an urgent need in the industry. solved problem.

One object of the present invention is to provide a light source module for a lighting device, the light source module can emit light on both sides, and the light emitting diode light source provided by the light source module on both sides is similar to the conventional halogen lamp, so that the The light source module can provide full ambient illumination light similar to the traditional light source, so that both the manufacturer of the vehicle lighting device or the general consumer can easily and directly replace the traditional light source module.

In more detail, compared with the existing light-emitting diode light source module of double-sided light source, the light source module of the present invention takes the filament length and filament diameter of the existing halogen lamp as the simulation objects, and has the same optical center. , so that the specification of the light source module using the light-emitting diode of the present invention is equivalent to the specification of the conventional halogen lamp, and can be matched with the existing halogen lamp shade to generate the expected light shape and cut-off line. In this way, the manufacturer does not need to spend extra time and cost to redesign the light path and re-open the mold to make the mold to meet the required light shape and cut-off line in order to replace the light source module with a different type.

In order to achieve the above object, the present invention provides a light source module for a lighting device. The lighting device includes a reflective surface that can be used to match a halogen filament, which defines a filament length and a filament diameter. The light source module includes a substrate assembly, a first light-emitting group and a second light-emitting group. The substrate assembly has a first surface and a second surface. The first light-emitting group is disposed on the first surface of the substrate assembly, the first light-emitting group has a first light-emitting surface, the first light-emitting surface has a first long side length, and the first long side length is positively correlated with the filament length. The second light-emitting group is disposed on the second surface of the substrate assembly, the second light-emitting group has a second light-emitting surface, the second light-emitting surface has a second long side length, and the second long side length is positively correlated with the filament length. The first light-emitting surface and the second light-emitting surface jointly define a thickness of a light source module, and the thickness of the light source module is positively correlated with the diameter of the filament.

In another aspect, the halogen filament has a halogen light optical center, and an optical center of the light source module is the same as the halogen light optical center.

In yet another aspect, the thickness of the light source module is less than 4 mm.

In yet another aspect, the length of the first long side and the length of the second long side are both less than 4 mm.

In another aspect, the lighting device further includes a lamp holder, the substrate assembly has a first substrate and a second substrate, the first substrate and the second substrate are sandwiched on both sides of the lamp holder, and the first surface is located on the lamp holder. A first outer surface of the first substrate and a second surface are located on a second outer surface of the second substrate.

In yet another aspect, the first light-emitting group and the second light-emitting group each include a first light-emitting diode unit, a second light-emitting diode unit and a third light-emitting diode unit, the first light-emitting diode The body unit is connected in series to the second light emitting diode unit and the third light emitting diode unit which are connected in parallel.

In another aspect, the light source module further includes a first carrier board and a second carrier board, and the light-emitting diode units of the first light-emitting group are arranged on the first carrier board and are arranged through the first carrier board On the first side of the substrate assembly, the light-emitting diode units of the second light-emitting group are arranged on the second side of the substrate through the second carrier after being arranged on the second carrier.

In another aspect, each of the first light-emitting group and the second light-emitting group further includes a fourth light-emitting diode unit, the substrate assembly has a first substrate and a second substrate, and the first substrate and the second substrate are respectively It has a metal base material layer, an insulating layer and a circuit layer, and defines at least one thermoelectric separation area. In the thermoelectric separation area of the first substrate and the second substrate, the insulating layer and the circuit layer are in the thermoelectric separation area. In order to hollow out and fill a conductor, the first light-emitting diode unit and the second light-emitting diode unit are connected in series by the conductor in the thermoelectric separation area, and then connected to the third light-emitting diode unit connected in parallel through the circuit layer In series with the fourth light emitting diode unit domain.

In one aspect of the present invention, each of the first light-emitting group and the second light-emitting group includes a light-emitting diode unit, the substrate assembly has a first substrate and a second substrate, and the first substrate and the second substrate respectively have A metal base material layer, an insulating layer and a circuit layer are defined, and at least one thermoelectric separation area is defined. In the thermoelectric separation area of the first substrate and the second substrate, the insulating layer and the circuit layer in the thermoelectric separation area are A conductor is hollowed out and filled, and one of the positive and negative electrodes of the light-emitting diode unit is directly attached to the conductor in the thermoelectric separation area.

In one aspect of the present invention, the first light-emitting group and the second light-emitting group each include a first light-emitting diode unit and a second light-emitting diode unit, and the substrate assembly has a first substrate and a first light-emitting diode unit. Two substrates. The first substrate and the second substrate respectively have a metal base material layer, an insulating layer and a circuit layer, and define at least one thermoelectric separation area. In the thermoelectric separation area of the first substrate and the second substrate, The insulating layer and the circuit layer are hollowed out and filled with a conductor in the thermoelectric separation area, and the first light emitting diode unit and the second light emitting diode unit are connected in series by the conductor in the thermoelectric separation area.

In another aspect, the lighting device further includes a fixing base, the lamp base includes a heat sink, the heat sink is disposed at an end of the lamp base away from the light source module, and the heat sink is assembled with the fixing base to fix the light source module. on the fixture of the lighting device.

In yet another aspect, the lighting device further includes a casing, the casing has a reflective surface, a light source opening of the casing is connected to the fixing base, and a lens opening of the casing extends outward away from the fixing base to form an accommodating space. , the fixed seat is annular to form a hollow area, and the lamp holder is positioned in the accommodating space through the hollow area.

In order to make the above objects, technical features and advantages more obvious and easy to understand, the following is a detailed description of the preferred embodiments in conjunction with the accompanying drawings.

The content of the present invention will be explained by the following examples, which are not intended to limit the implementation of the present invention in any specific environment, application or special manner as described in the embodiments. Therefore, the description of the embodiments is only for the purpose of illustrating the present invention, rather than limiting the present invention. It should be noted that, in the following embodiments and drawings, elements not directly related to the present invention have been omitted and not shown; and the dimensional relationships among the elements in the drawings are only for easy understanding, and are not intended to limit the actual proportions.

Please refer to FIGS. 3 , 4 and 5 at the same time. FIG. 3 is a side view of a lighting device 3 , and FIG. 4 is a top perspective exploded view of a light source module 4 used in the lighting device 3 according to the first embodiment of the present invention. 5 is a bottom perspective exploded view of a light source module 4 according to the first embodiment of the present invention for the lighting device 3 . In practical applications, the lighting device 3 is a vehicle lighting device.

Please refer to FIG. 3 first, the lighting device 3 includes a light source module 4 , a lamp socket 31 , a casing 33 and a lens 35 . The casing 33 is slightly hemispherical and forms an accommodating space S, and two ends of the casing 33 respectively have a light source opening 331 and a lens opening 333 . The lens 35 is embedded in the lens opening 333 with a larger diameter; the end of the lamp holder 31 provided with the light source module 4 passes through the light source opening 331 and is enclosed in the accommodating space S of the housing 33 . The lamp holder 31 The other end is outside the casing 33 and is electrically connected to the light source driving circuit (not shown). The housing 33 , also known as a lampshade or a lamp cup in the industry, has an upper reflecting surface 335 and a lower reflecting surface 337 . When the light source module 4 provides light, the light is first reflected to the lens 35 through the upper half reflecting surface 335 and the lower half reflecting surface 337 , and then concentrated in front of the lighting device 3 by the lens 35 to form an illuminated area. In more detail, the optical design of the lighting device 3 is a reflective type. The light source module 4 of the first embodiment of the present invention provides the upper half reflecting surface 335 with part of the light used for the lighting area, and also provides the lower reflecting surface 337 with light for the lighting area. Part of the light in the illuminated area. The configuration of the internal components and peripheral components of the light source module 4 according to the first embodiment of the present invention and the light supply mechanism thereof will be described in detail below.

As shown in FIGS. 4 and 5 , the light source module 4 includes a substrate assembly 41 , a first light-emitting group 43 and a second light-emitting group 45 .

The substrate assembly 41 has a first substrate 411 , a second substrate 413 , a first surface 415 and a second surface 417 . The first substrate 411 and the second substrate 413 are sandwiched between two sides of the lamp holder 31. As shown in the figure, the first surface 415 is located on a first outer surface of the first substrate 411, and the second surface 417 is located on the second substrate 413 a second outer side surface.

In order to simulate a conventional halogen lamp and provide illumination similar to full-circle light, the first light-emitting group 43 is disposed on the first surface 415 of the substrate assembly 41 , and the second light-emitting group 45 is disposed on the second surface 417 of the substrate assembly 41 , so that both sides of the light source module 4 can provide illumination light.

For further details, please refer to FIG. 2 to FIG. 5 at the same time. In the lighting device 3 using the light source module 4 of the present invention, the upper half reflecting surface 335 and the lower half reflecting surface 337 of the housing 33 are suitable for matching with the halogen filament 131 of the conventional halogen lamp vehicle lamp structure 1. The conventional halogen filament 131 is defined with a filament length L _H and a filament diameter _DH . The first light emitting group 43 of the present invention has a first light emitting surface 431 , and the first light emitting surface 431 has a first long side length L ₁ , and the first long side length L ₁ is positively correlated with the filament length L _H. The second light-emitting group 45 has a second light-emitting surface 451 , the second light-emitting surface 451 has a second long side length L ₂ , and the second long side length L ₂ is positively correlated with the filament length L _H . The first light emitting surface 431 and the second light emitting surface 451 together define a thickness T of the light source module, and the thickness T of the light source module is positively correlated with the diameter _DH of the filament. Therefore, the length of the first light-emitting surface 431 of the first light-emitting group 43 and the length of the second light-emitting surface 451 of the second light-emitting group 45 are both positively related to the filament length L _H , and the first light-emitting surface of the first light-emitting group 43 The distance between 431 and the second light-emitting surface 451 of the second light-emitting group 45 is also positively related to the filament diameter _DH .

More specifically, the halogen filament 131 of the conventional halogen lamp structure 1 has a halogen lamp optical center, and an optical center of the light source module 4 of the present invention is the same as the halogen lamp optical center. Therefore, the light source module 4 of the present invention is not only close to the size of the halogen filament 131 in terms of the light source size of the light emitting diode, but also makes the optical centers of the two consistent, reducing the difference between the two different light sources.

It should be noted that, since the halogen filament 131 of the conventional halogen lamp structure 1 has various specifications, and the matching shell 33 also has different reflective surface designs, the first one in the light source module 4 of the present invention is the first one. The light-emitting group 43 and the second light-emitting group 45 are still correspondingly adjusted according to the aforementioned concept, and can be optimally adjusted according to the design of the reflective curved surface of the casing 33 .

In addition to the above specification features, preferably, the thickness T of the light source module of the present invention is less than 4 mm, and the first long side length L ₁ and the second long side length L ₂ are both less than 4 mm. In practical applications, the length and width of the first light-emitting surface 431 and the second light-emitting surface 451 may be less than or equal to 4 mm and 2 mm, respectively. More preferably, the thickness T of the light source module is less than or equal to 2 mm.

FIG. 6 is a side view of another aspect of the lighting device. The same points as the aforementioned aspects will not be repeated here. In this aspect, in addition to the light source module 4 , the lamp holder 31 , the casing 33 and the lens 35 , the lighting device 6 further includes a fixing base 61 , and the lamp holder 31 includes a heat sink 311 . The heat sink 311 is disposed at one end of the lamp holder 31 away from the light source module 4 . More specifically, in this aspect, the light source opening 331 of the housing 33 is connected to the fixing seat 61 , the fixing seat 61 is annular and forms a hollow area, and the lamp holder 31 is positioned in the accommodating space S through the hollow area. The heat generated by the light source module 4 can be further guided to the housing 33 through the fixing seat 61 in addition to being guided to the heat sink 311 , thereby improving the heat dissipation area and the overall heat dissipation efficiency.

Next, please refer to FIGS. 7 to 9 . FIG. 7 is a partial top view of the light source module 7 according to the second embodiment of the present invention, and FIG. 8 is a schematic circuit diagram of the first light-emitting group 73 of the light source module 7 according to the second embodiment of the present invention. 9 is a partial cross-sectional view of the light source module 7 according to the second embodiment of the present invention.

The light source module 7 of this embodiment also includes a substrate assembly 71 , a first light-emitting group 73 and a second light-emitting group 75 . The substrate assembly 71 is located on both sides of the lamp socket 31 of the lighting device. For ease of illustration, FIGS. 7 and 8 only illustrate the substrate assembly 71 and the first light-emitting group 73 . The configuration of the second light-emitting group 75 is the same as that of the first light-emitting group 73 , so the description is not repeated. The difference between this embodiment and the first embodiment is that the first light-emitting group 73 and the second light-emitting group 75 each include a first light-emitting diode unit 731, 751, a second light-emitting diode unit 733, 753, and a The third light emitting diode units 735 and 755 . The second light-emitting diode unit 733 and the third light-emitting diode unit 735 of the first light-emitting group 73 are connected in parallel, and the first light-emitting diode unit 731 of the first light-emitting group 73 is connected in series to the first light-emitting diode unit 731 connected in parallel with each other. The second light emitting diode unit 733 of the light emitting group 73 and the third light emitting diode unit 735 of the first light emitting group 73 are. Similarly, the second light-emitting diode unit 753 and the third light-emitting diode unit 755 of the second light-emitting group 75 are connected in parallel, and the first light-emitting diode unit 751 of the second light-emitting group 75 is connected in series to the second light-emitting diode unit 751 connected in parallel with each other. The second light-emitting diode unit 753 of the two light-emitting groups 75 and the third light-emitting diode unit 755 of the second light-emitting group 75 . As shown, the light emitting diode units arranged in series and in parallel will be connected to the positive and negative electrodes via conductive lines 70 .

Since the light intensity generated by the light-emitting diode unit is related to the applied current, the second light-emitting diode unit 733, 753 and the third light-emitting diode unit 735, The current passing through the 755 is relatively small, while the current passing through the first LED units 731 and 751 in series is relatively large (the sum of the currents of the second LED unit 733 and the third LED unit 735). ), therefore, in the light-emitting surfaces provided by the first light-emitting group 73 and the second light-emitting group 75 , the area with the strongest light intensity will deviate from the center and move to a position closer to the first light-emitting diode 731 . By changing the configuration of the series and parallel, the light intensity distribution of the light can be changed, so that the intensity of the lighting area can be increased in the part where the light intensity is required, and the intensity of the unneeded part can be reduced, so it can be adjusted to meet the lighting area requirements of vehicle lighting regulations. , making the bright areas bright enough and the dark areas dark enough to provide a clear cutoff line.

As shown in FIG. 7 and FIG. 9 , in this embodiment, in order to achieve the aforementioned circuit connection in series and parallel, the light source module 7 further includes a first carrier board 77 and a second carrier board 79 . The first light-emitting group After the light-emitting diode units 731 , 733 , and 735 of 73 are disposed on the first carrier plate 77 , they are disposed on the first surface 711 of the substrate assembly 71 through the first carrier plate 77 . The light emitting diode units 751 , 753 and 755 of the second light emitting group 75 are disposed on the second surface 713 of the substrate assembly 71 through the second carrier plate 79 after being disposed on the second carrier plate 79 . Conductive circuits 70 are arranged on the first carrier board 77 and the second carrier board 79 , whereby the conductive circuits 70 connect the light-emitting diodes on the first carrier board 77 and the second carrier board 79 to the aforementioned series and parallel circuits connect. The first carrier board 77 and the second carrier board 79 are known as sub-mounts in the industry, which are fired from ceramics, and the materials thereof include but are not limited to aluminum nitride and aluminum oxide. Therefore, the first carrier board 77 and the second carrier board 79 can not only achieve the external circuit connection of the light-emitting diode units, but also help the heat generated by the light-emitting diode units to be distributed evenly, thereby improving the performance of the light source module 7 cooling efficiency.

Please refer to FIGS. 10 to 12. FIG. 10 is a partial top view of the light source module 10 according to the third embodiment of the present invention, and FIG. 11 is a schematic circuit diagram of the first light-emitting group 101 of the light source module 10 according to the third embodiment of the present invention. 12 is a partial cross-sectional view of the light source module 10 according to the third embodiment of the present invention.

Similarly, the light source module 10 of this embodiment also includes a substrate assembly (not shown in the figure), a first light-emitting group 101 and a second light-emitting group (not shown in the figure). 10 to 12 only use the first light-emitting group 101 as a schematic diagram, and the configuration of the second light-emitting group is the same as that of the first light-emitting group 101, so the description is not repeated.

The difference between this embodiment and the second embodiment is that the first light-emitting group 101 includes a first light-emitting diode unit 1011 , a second light-emitting diode unit 1013 , and a third light-emitting diode unit 1015 and a fourth light-emitting diode unit 1017, the second light-emitting group also includes a first light-emitting diode unit, a second light-emitting diode unit, a third light-emitting diode unit and a fourth light-emitting diode unit body unit (not shown). The third light-emitting diode unit 1015 of the first light-emitting group 101 is connected in parallel with the fourth light-emitting diode unit 1017 of the first light-emitting group 101 and then connected to the first light-emitting diode unit 1011 of the first light-emitting group 101 and the second light emitting diodes 1013 of the first light emitting group 101 are connected in series. Similarly, after the third light-emitting diode unit of the second light-emitting group is connected in parallel with the fourth light-emitting diode unit of the second light-emitting group, it is connected to the first light-emitting diode unit and the second light-emitting group of the second light-emitting group. The second light emitting diodes are connected in series. As shown in the figure, the light emitting diode units arranged in series and in parallel are connected to the positive and negative electrodes through the conductive lines 103, and the dotted line in FIG. 12 is the path of the current.

Furthermore, in this embodiment, the series and parallel connection of the light-emitting diodes of the first light-emitting group 101 and the second light-emitting group is simply performed on the substrate assembly through the metal substrate circuit 103 for circuit connection, without additional Through the first carrier board and the second carrier board, the overall thickness of the light source module 10 is reduced.

In order to improve the heat dissipation efficiency of the present embodiment compared with the second embodiment, the substrate assembly of the present embodiment also has a first substrate 105 and a second substrate, and the first substrate 105 and the second substrate are sandwiched between the lamp sockets. sides. Please refer to FIG. 12 , which takes the first substrate 105 on one side of the lamp socket as an example. The first substrate 105 and the second substrate respectively have a metal base material layer 1051 , an insulating layer 1053 and a circuit layer 1055 , and define a thermoelectric separation region 100 . As shown in the figure, in the thermoelectric separation area 100 of the first substrate 105 and the second substrate, the insulating layer 1053 and the circuit layer 1055 are hollowed out in the thermoelectric separation area 100 , and a conductor 107 is filled in the hollowed out area. Therefore, in more detail, the third light emitting diode unit 1015 and the fourth light emitting diode unit 1017 of the first light emitting group 101 are connected in parallel through the circuit layer 1055 of the first substrate 105, and the first light emitting diode unit 101 of the first light emitting group 101 is connected in parallel. A light-emitting diode unit 1011 and the second light-emitting diode unit 1013 of the first light-emitting group 101 are connected in series in the thermoelectric separation region 100 of the first substrate 105 . Similarly, the third light-emitting diode unit and the fourth light-emitting diode unit of the second light-emitting group are connected in parallel through the circuit layer of the second substrate, and the first light-emitting diode unit and the second light-emitting diode unit of the second light-emitting group are The second light emitting diode units of the group are connected in series in the thermoelectric separation region of the second substrate.

In this embodiment, the filled conductors 107 may be solder paste or bumped copper. Since the heat dissipation effect of the conductor 107 is much better than that of the insulating layer 1053, the heat generated by the light emitting diode can be directly conducted from the conductor 107 down to the metal base layer 1051, and the heat is evenly dissipated by the lamp holder. On the other hand, since the lamp holder is not electrically connected to the circuit, the first light-emitting diode unit 1011 and the second light-emitting diode unit 1013 connected in series through the conductor 107 in the thermoelectric separation area 100 flow through the two The current of the other will take the path of the least resistance, so as not to cause a short circuit of the current. That is to say, the conductor 107 in this embodiment not only provides a heat conduction path for directly conducting heat to the metal base material layer 1051 , but also provides a current between the first light emitting diode unit 1011 and the second light emitting diode unit 1013 . conduction path.

It should be noted that, the present invention can adjust the number, size, position on the substrate, operating power, and the distance between the light-emitting diode units included in the first light-emitting group and the second light-emitting group according to requirements. in series or in parallel, and the configuration of the first light-emitting group and the second light-emitting group can also be different from each other, and the thermoelectric separation area is configured due to the light-emitting diode units, so in other embodiments, The location and number of thermoelectric separation areas can also be adjusted appropriately. For example, in one embodiment of the present invention, the first light-emitting group and the second light-emitting group can respectively include a single light-emitting diode unit, the substrate assembly has a first substrate and a second substrate, the first substrate and the second substrate respectively have a metal base material layer, an insulating layer and a circuit layer, and define at least one thermoelectric separation area, in the thermoelectric separation area of the first substrate and the second substrate, the insulating layer and the circuit layer are The thermoelectric separation area is hollowed out and filled with a conductor, and one of the positive and negative electrodes of the light-emitting diode is directly attached to the conductor in the thermoelectric separation area.

Or, in another embodiment of the present invention, each of the first light-emitting group and the second light-emitting group includes two light-emitting diode units, which are a first light-emitting diode unit and a second light-emitting diode unit, respectively. , the substrate assembly has a first substrate and a second substrate, the first substrate and the second substrate respectively have a metal substrate layer, an insulating layer and a circuit layer, and define at least one thermoelectric separation area, the first substrate In the thermoelectric separation area from the second substrate, the insulating layer and the circuit layer are hollowed out and filled with a conductor in the thermoelectric separation area, and the first light emitting diode unit and the second light emitting diode unit are connected by the thermoelectric The conductors in the separated regions are connected in series.

Since the light-emitting surface of the light-emitting diode and the size of the light source module will affect the light distribution of the illumination light, the present invention uses the light-emitting diode light source that approximates two-dimensional plane light emission through the size specification design and optical arrangement of the light source module. The luminous results of the original full-circle light source can match the optical design of the traditional full-circle halogen lamp, and share the structure with the existing traditional light source to provide a modular light-emitting diode light source, allowing consumers to use the traditional light source according to their needs. The light source and the light-emitting diode light source can be directly replaced according to the needs, and the manufacturer of the automotive lighting device does not need to develop additional molds, which reduces the total development cost of the overall lamp.

In addition, through the circuit arrangement of the light-emitting diodes, the present invention can also easily control the light intensity of each area of the light shape, thereby providing a clear light source resolution and a clear cut-off line, and improving the light source module through the ceramic substrate or the filling conductor. the overall cooling efficiency.

The above-mentioned embodiments are only used to illustrate the embodiments of the present invention and to illustrate the technical characteristics of the present invention, and are not used to limit the protection scope of the present invention. Any changes or equality arrangements that can be easily accomplished by those skilled in the art fall within the claimed scope of the present invention, and the scope of protection of the present invention should be subject to the scope of the patent application.

1: Lamp structure 11: Lampshade 13: Light source 131: Halogen filament 3: Lighting device 31: Lamp holder 311: Heat sink 33: Housing 331: Light source opening 333: Lens opening 335: Upper half reflecting surface 337: Lower half Partial reflection surface 35: Lens 4: Light source module 41: Substrate assembly 411: First substrate 413: Second substrate 415: First surface 417: Second surface 43: First light-emitting group 431: First light-emitting surface 45: Second lighting group 451: Second lighting surface 6: Lighting device 61: Mounting base 7: Light source module 70: Conductive circuit 71: Substrate assembly 73: First lighting group 75: Second lighting group 731: First lighting 2 Pole unit 733: Second LED unit 735: Third LED unit 751: First LED unit 753: Second LED unit 755: Third LED unit 77: First carrier board 79: Second carrier board 10: Light source module 101: First light-emitting group 1011: First light-emitting diode unit 1013: Second light-emitting diode unit 1015: Third light-emitting diode unit 1017: Fourth light emitting diode unit 103: metal substrate circuit 105: first substrate 1051: metal substrate layer 1053: insulating layer 1055: circuit layer 107: conductor A: lighting area _{DH: filament diameter L H :} filament length L ₁ : Length of the first long side L ₂ : Length of the second long side S: accommodating space T: thickness of the light source module

1 is a side view of a conventional lighting device; 2 is a side view of a light source of a conventional lighting device; 3 is a side view of a lighting device including the light source module according to the first embodiment of the present invention; FIG. 4 is a top perspective exploded view of the light source module according to the first embodiment of the present invention; FIG. 5 is a bottom three-dimensional exploded view of the light source module according to the first embodiment of the present invention; 6 is a side view of another aspect of the lighting device including the light source module according to the first embodiment of the present invention; 7 is a partial top view of a light source module according to a second embodiment of the present invention; 8 is a schematic circuit diagram of the first light-emitting group of the light source module according to the second embodiment of the present invention; 9 is a partial cross-sectional view of a light source module according to a second embodiment of the present invention; 10 is a partial top view of a light source module according to a third embodiment of the present invention; 11 is a schematic circuit diagram of the first light-emitting group of the light source module according to the third embodiment of the present invention; and 12 is a partial cross-sectional view of a light source module according to a third embodiment of the present invention.

31: lamp holder

4: Light source module

41: Substrate assembly

411: First substrate

413: Second substrate

415: first side

43: The first light-emitting group

431: The first light-emitting surface

L ₁ : Length of the first long side

Claims (12)

A light source module for an illuminating device, the illuminating device includes a reflective surface, the reflective surface can be used to match a halogen filament, which defines a filament length and a filament diameter, the light source module includes: a base plate assembly having a first surface and a second surface; A first light-emitting group is disposed on the first surface of the substrate assembly, the first light-emitting group has a first light-emitting surface, the first light-emitting surface has a first long side length, and the first long side length is the same as the filament length is positively related; and A second light-emitting group is disposed on the second surface of the substrate assembly, the second light-emitting group has a second light-emitting surface, the second light-emitting surface has a second long side length, and the second long side length is the same as The filament length is positively correlated; Wherein, the first light-emitting surface and the second light-emitting surface jointly define a thickness of a light source module, and the thickness of the light source module is positively correlated with the diameter of the filament. The light source module of claim 1, wherein the halogen filament has a halogen light optical center, and an optical center of the light source module is the same as the halogen light optical center. The light source module according to claim 1, wherein the thickness of the light source module is less than 4 mm. The light source module of claim 1, wherein the length of the first long side and the length of the second long side are both less than 4 mm. The light source module of claim 1, wherein the lighting device further comprises a lamp socket, the substrate assembly has a first substrate and a second substrate, and the first substrate and the second substrate are sandwiched between the lamp On both sides of the seat, the first surface is located on a first outer surface of the first substrate, and the second surface is located on a second outer surface of the second substrate. The light source module of claim 1, wherein the first light-emitting group and the second light-emitting group each comprise a first light-emitting diode unit, a second light-emitting diode unit, and a third light-emitting diode unit a unit, the first light emitting diode unit is connected in series to the second light emitting diode unit and the third light emitting diode unit which are connected in parallel. The light source module of claim 6, wherein the light source module further comprises a first carrier board and a second carrier board, and the light-emitting diode units of the first light-emitting group are disposed on the first carrier board After that, the light-emitting diode units of the second light-emitting group are arranged on the first surface of the substrate assembly through the first carrier board, and then arranged on the second carrier board through the second carrier board. the second side of the substrate. The light source module of claim 6, wherein each of the first light-emitting group and the second light-emitting group further comprises a fourth light-emitting diode unit, and the substrate assembly has a first substrate and a second substrate, The first substrate and the second substrate respectively have a metal base material layer, an insulating layer and a circuit layer, and define at least one thermoelectric separation area, in the thermoelectric separation area of the first substrate and the second substrate , the insulating layer and the circuit layer are hollowed out and filled with a conductor in the thermoelectric separation area, and the first light emitting diode unit and the second light emitting diode unit are connected by the conductor in the thermoelectric separation area connected in series, and then connected in series with the third light emitting diode unit and the fourth light emitting diode unit connected in parallel through the circuit layer. The light source module of claim 1, wherein each of the first light-emitting group and the second light-emitting group includes a light-emitting diode unit, the substrate assembly has a first substrate and a second substrate, the first substrate A substrate and the second substrate respectively have a metal base material layer, an insulating layer and a circuit layer, and define at least one thermoelectric separation area. In the thermoelectric separation area of the first substrate and the second substrate, the The insulating layer and the circuit layer are hollowed out and filled with a conductor in the thermoelectric separation area, and one of the positive and negative electrodes of the light emitting diode unit is directly attached to the conductor in the thermoelectric separation area. The light source module of claim 1, wherein the first light-emitting group and the second light-emitting group each comprise a first light-emitting diode unit and a second light-emitting diode unit, and the substrate assembly has a A first substrate and a second substrate, the first substrate and the second substrate respectively have a metal base material layer, an insulating layer and a circuit layer, and define at least one thermoelectric separation area, the first substrate and the first substrate In the thermoelectric separation area of the two substrates, the insulating layer and the circuit layer are hollowed out and filled with a conductor in the thermoelectric separation area, and the first light emitting diode unit and the second light emitting diode unit are connected by the The conductors in the thermoelectric separation region are connected in series. The light source module according to claim 5, wherein the lighting device further comprises a fixing base, the lamp base comprises a heat sink, the heat sink is disposed at an end of the lamp base away from the light source module, and the heat sink is connected to an end of the lamp base away from the light source module. The fixing bases are matched with each other, so that the light source module is fixed on the fixing base of the lighting device. The light source module of claim 11, wherein the lighting device further comprises a casing, the casing has the reflection surface, a light source opening of the casing is connected to the fixing seat, and a lens opening of the casing is far away from The fixing seat extends outward to form an accommodating space, the fixing seat is annular and forms a hollow area, and the lamp holder is positioned in the accommodating space through the hollow area.

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