CN109296987A - Light source module and Vehicular lamp - Google Patents
Light source module and Vehicular lamp Download PDFInfo
- Publication number
- CN109296987A CN109296987A CN201810827497.2A CN201810827497A CN109296987A CN 109296987 A CN109296987 A CN 109296987A CN 201810827497 A CN201810827497 A CN 201810827497A CN 109296987 A CN109296987 A CN 109296987A
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- China
- Prior art keywords
- light
- light source
- source module
- subassembly
- emitting component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Light-emitting component can be installed to high-density and inhibit the light source module and Vehicular lamp of the generation of dazzle by providing one kind.Light source module (40) includes: a plurality of light-emitting elements (43c)；Multiple metal wires (45a) of electric power are supplied respectively to each light-emitting component (43c)；The light reflective resin portion (43d) that at least part of the side of light-emitting component (43c) is sealed；The light absorption resin portion (45) that metal wire (45a) is sealed.
Description
Technical field
The present invention relates to light source modules and Vehicular lamp, in particular to the surface of device mounting board are provided with multiple hairs
The light source module and Vehicular lamp of optical diode.
Background technique
Vehicular lamp is generally possible to switching dipped beam and distance light.Dipped beam with scheduled illumination to nearby illuminating, advise by light distribution
Surely it is decided to be not to opposite car, first drives a vehicle and bring dazzle, mainly used in the case where urban district travels.On the other hand, distance light
With a wide range of of relatively high illumination illumination front and at a distance, the feelings that mainly vehicle, few road of first driving a vehicle are run at high speed over there
It is used under condition.So distance light, compared with dipped beam, the visibility of driver is preferable, but having a problem in that can be to being present in vehicle
Driver, the pedestrian of the vehicle in front bring dazzle.
In recent years it has been proposed that the state based on vehicle periphery, the ADB with optical mode of dynamic, Adaptive Control distance light
(Adaptive Driving Beam, adaptive high beam) technology.Whether there is or not first drivings, opposite in the front of ADB technology detection vehicle
Vehicle, pedestrian, will perhaps the corresponding region of pedestrian dims etc. to reduce and brings vehicle or the dazzle of pedestrian with vehicle.Such
In ADB technology, propose light-emitting components such as multiple LED (Light Emitting Diode, light emitting diode) on substrate
It is carried with column-shaped, extinguishes the LED (such as patent document 1) in region corresponding with vehicle, pedestrian.
Further, it also proposed in recent years by a plurality of light-emitting elements two-dimensional arrangement on substrate, selectivity switching shines
It the extinguishing of element and lights, so that control distance light in more detail matches optical mode.In such arrangement for carrying out two-dimentional light-emitting component
Vehicular lamp in, it is two-dimensional with optical mode in order to irradiate well, need to improve the packing density of light-emitting component, and improve
The precision of installation site.In the case where using LED as light-emitting component, using the packaging part of surface installing type, using in shape
At the construction for positioning each LED and installation in the terminal pad on substrate and carry out high-density installation.
Figure 10 is the schematic plan view for showing the light source module 1 for the ADB technology for having used previous proposition.As shown in Figure 10,
Previous light source module 1 is on a substrate 2 equipped with for the connector 3 with external electrical connections, on the surface of substrate 2 from connector
3 extensions are formed with wiring pattern 4, equipped with multiple LED5 on wiring pattern 4.In addition, in light source module 1, by wiring diagram
The LED5 of case 4 carries part and is formed about greatly, as the heat dissipation figure for the fever to shine with LED5 to be radiated well
Case.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2015-016773 bulletin
Summary of the invention
The problem of present invention is to be solved
Such previous light source module 1 has a problem in that the area in order to ensure radiating pattern, LED5 mutual
Every big, it is difficult to high-density installation, and due to installing LED5 with individual packaging parts come surface, the position pair installed from face
Neat precision aspect, it is also difficult to high-density installation.To solve this problem, it by carrying multiple LED chips in 1 packaging part, utilizes
Wire bonding is electrically connected with the wiring layer on substrate, can take into account the aligned in position precision of face installation and the height of LED chip
Density installation.
But light of the metal line reflection from LED as used in wire bonding and stray light is generated, have
Problem is: the irradiation light from Vehicular lamp can generate dazzle.In ADB technology, due to needing critically to control the irradiation of light
Therefore region and non-irradiated region are the problem more serious than common Vehicular lamp the problem of dazzle brought by stray light.
Therefore, the purpose of the present invention is to provide a kind of light source module and Vehicular lamps, can install hair to high-density
Optical element and the generation for inhibiting dazzle.
The solution to the problem
To solve the above problems, light source module of the invention is characterised by comprising: a plurality of light-emitting elements；Multiple metals
Line is supplied respectively to electric power to each light-emitting component；Light reflective resin portion, by least one of the side of the light-emitting component
Divide sealing；And light absorption resin portion, by the metal linear sealing.
In such light source module of the invention, it will be sealed and improved around light-emitting component with light reflective resin portion
Light extraction efficiency can install to high-density light-emitting component and inhibit dazzle with light absorption resin portion come sealing metal line
It generates.
In addition, the light reflective resin portion is filled into the adjacent light-emitting component in a form of the invention
Between, the side of the light-emitting component of predetermined quantity is sealed together.
In addition, in a form of the invention, the light absorption resin portion is by the metal wire one of predetermined quantity
And it seals.
In addition, in a form of the invention, the subassembly including being formed with subassembly wiring on a surface, along
The first direction of the subassembly carries multiple light-emitting components, the metal wire and the son in subassembly wiring
Fit wires connection.
In addition, in a form of the invention, multiple subassemblies are arranged as extend in the first direction the
One column.
In addition, further, multiple subassemblies are used as to be extended in the first direction in a form of the invention
Secondary series and be adjacent to arrangement with the first row.
In addition, to solve the above problems, Vehicular lamp of the invention is characterised by comprising light described in any of the above embodiments
Source module selectively supplies electric power multiple metal wires and multiple light-emitting components.
In such Vehicular lamp of the invention, light-emitting component can be installed to high-density and inhibit the generation of dazzle.
The effect of invention
In the present invention, light-emitting component can be installed to high-density and inhibit the light source of the generation of dazzle by being capable of providing one kind
Module and Vehicular lamp.
Detailed description of the invention
Fig. 1 is the exploded perspective view for showing the Vehicular lamp 100 of first embodiment.
Fig. 2 is the schematic isometric for showing the light source module 40 of first embodiment.
Fig. 3 is the schematic plan view for showing the mounted board 41 of first embodiment.
Fig. 4 is the figure that the construction of mounted board 41 of first embodiment is described in detail, and Fig. 4 (a) is exploded perspective view, figure
4 (b) be schematic sectional view.
Fig. 5 is the schematic plan view for showing the light source module 40 of the state equipped with each component on mounted board 41.
Fig. 6 is the amplification stereogram for amplifying and showing subassembly 43.
Fig. 7 is to show to carry the enlarged partial sectional view of state of the region 49 equipped with subassembly 43 in illumination region.
Fig. 8 is the amplification view that amplification shows that illumination region carries 49 periphery of region.
Fig. 9 is the chart for showing the synthesis brightness of adjacent light-emitting component 43c in second embodiment, and Fig. 9 (a) is
The distance for showing light-emitting component 43c is remote and synthesize the inadequate example of brightness, Fig. 9 (b) be show light-emitting component 43c distance it is close and
Synthesize the sufficient example of brightness.
Figure 10 is the schematic plan view for showing the light source module 1 for the ADB technology for having used previous proposition.
The explanation of label
100 ... Vehicular lamps
10 ... lens
20 ... lens holders
30 ... reflectors
40 ... light source modules
50 ... radiators
60 ... cooling fans
11 ... mounted boards
41 ... mounted boards
41a ... metal plate
41b ... adhesive sheet
41c ... glass epoxy layer
42 ... wiring patterns
43 ... subassemblies
43a ... subassembly substrate
The wiring of 43b ... subassembly
43c ... light-emitting component
43d ... light reflective resin portion
44 ... power-feed connectors
44a ... power-feed connector equipped section
45 ... light absorption resin portions
45a ... metal wire
46 ... resist layers
47 ... optical components carry region
48 ... optical component fixed parts
49 ... illumination regions carry region
The opening portion 49a, 49b ...
Specific embodiment
(first embodiment)
In the following, the embodiment that present invention will be described in detail with reference to the accompanying.It is identical or equivalent shown in the drawings
Constituent element, component, processing are labelled with identical appended drawing reference, and appropriate the repetitive description thereof will be omitted.Fig. 1 is to show present embodiment
Vehicular lamp 100 exploded perspective view.Vehicular lamp 100 includes lens 10, lens holder 20, reflector 30, light source module
40, radiator 50, cooling fan 60, each component are mutually located, and are fixed by fixed cell (not shown).
Lens 10 are made of translucent material, are intended that the light from light source module 40 as scheduled light distribution point
The component irradiated forwards to cloth.Lens holder 20 is for maintain the opposite of lens 10 and light source module 40 and reflector 30
The component that the state of positional relationship is kept.Reflector 30 is disposed on the front of light source module 40 and will come from light source module
The component that 40 light reflects forwards is equivalent to optical component of the invention.
Light source module 40 is according to the luminous component from the electric power externally supplied and signal of Vehicular lamp 100, in detail
It is aftermentioned.Radiator 50 is the good component of heat conductivity contiguously configured at the back side of light source module 40 and light source module 40,
The cooling fan 60 that overleaf side forms radiating fin is disposed on the back side of radiator 50, generates sky and supplying electric power
The component of air-flow.
In Vehicular lamp 100, when being externally supplied electric power and signal, light source module 40 is sent out according to electric power and signal
Light is irradiated via in lens holder 20 with lens 10 forwards by the light that reflector 30 reflects forwards.In addition, with light source die
Heat caused by block 40 is luminous rejects heat in air via radiator 50, cooling by the air-supply from cooling fan 60.
Fig. 2 is the schematic isometric for showing the light source module 40 of present embodiment.Light source module 40 include mounted board 41,
Wiring pattern 42, subassembly 43, power-feed connector 44, metal wire 45a, light absorption resin portion 45 and resist layer 46, are taking
Carried base board 41 is formed with optical component and carries region 47, carries in region 47 in optical component and is formed with optical component fixed part
48。
Mounted board 41 is the component of the approximate slab shape formed by the good material of heat conductivity, is formed on a surface
There is wiring pattern 42, and equipped with multiple subassemblies 43 and power-feed connector 44.In addition, covering 42 ground of wiring pattern is formed with
Resist layer 46.The material for constituting mounted board 11 does not limit, but it is preferred that using the good gold of the heat conductivities such as copper, aluminium
Belong to.
In addition, the composite substrate that insulative substrate is fitted on conductive board can be used as mounted board 41,
Such as it can enumerate and paste glass epoxy layer on metallic substrates.The case where constituting mounted board 41 with metal substrate
Under, thermal conductivity caused by the oxidation of metal material declines in order to prevent, is preferably formed in the back side of mounted board 41
Oxygen-proof film.As the forming method of oxygen-proof film, pre- solder flux processing, Au plating can be enumerated, but from improving thermal diffusivity
For such viewpoint, preferably Au plating.
Wiring pattern 42 is formed at the conductive pattern on the surface of mounted board 41, for ensuring from power-feed connector 44
Electrical connection of the terminal to subassembly 43.As mounted board 41 using conductive material, in wiring pattern 42
Insulating layer is formed between mounted board 41.
Subassembly 43 is to be mounted in the surface of mounted board 41, and be electrically connected with wiring pattern 42 using metal wire 45a,
It is supplied electric power via metal wire 45a, to carry out the component to shine corresponding with electric power.The detailed configuration of aftermentioned subassembly 43.
Power-feed connector 44 be mounted in mounted board 41 surface for ensuring component with external electrical connections, it is multiple
Terminal is electrically connected with wiring pattern 42.As the shape of power-feed connector 44, the element of approximate cuboid is shown in FIG. 2, but
As long as can it is corresponding with known cable looms and connect, shape, terminal shape etc. do not limit.
Metal wire 45a be for by be arranged in subassembly 43 terminal and the wiring pattern 42 being formed on mounted board 41
The component of connection is the metal electroconductive component that can be realized with known Wire Bonding Technology.Constitute metal wire 45a's
Material does not limit, and gold, copper, aluminium etc. can be used, but it is preferred that using gold.
Light absorption resin portion 45 is to be mixed into the resin component of inorganic filler and light absorption material in matrix resin,
Covering metal wire 45a is simultaneously sealed.The sealing for the metal wire 45a that light absorption resin portion 45 is carried out can be 45a by metal wire
It does not seal one by one, but it is preferred that multiple metal wire 45a are sealed together.Matrix tree as light absorption resin portion 45
Rouge, the preferably good hardening resin composition of processing with high-fire resistance, light resistance, translucency, can enumerate ring
Sealing material known to oxygen resin, silicone resin etc..In particular, in order to prevent due to because of light absorption resin portion caused by heat
45 expansion is shunk to metal wire 45a application stress to deform, be broken, preferably as matrix resin, using solid
The low silicone resin of coefficient of elasticity after change.As the light absorption material for being mixed into matrix resin, carbon filler can be enumerated
Deng.
In the light source module 40 of present embodiment, by covering metal wire 45a and close with light absorption resin portion 45
Envelope can prevent from adhering to foreign conducting matter and short circuit in metal wire 45a.In addition, being inhaled since light absorption resin portion 45 is mixed into light
The property received material, therefore, the light from subassembly 43 reach metal wire 45a and reflect, and can prevent from being irradiated to as stray light
The outside of Vehicular lamp 100.In particular, selectively being lighted in the light-emitting component for making subassembly 43 be included using ADB technology
In the case of, it can prevent the stray light reflected by metal wire 45a from reaching non-irradiated region, light-emitting component can be installed to high-density
And inhibit the generation of dazzle.
When forming light absorption resin portion 45, will be kneaded has the matrix resin of inorganic filler and light absorption material use
Distributor etc. is supplied on metal wire 45a, is then solidified.It is kneaded the viscosity and thixotropic property having after light absorption material
It is enough to consider the mouldability after being coated with, the stress to supply lines, it is selected, inorganic filler by adjusting the material of matrix resin
Additive amount carrys out any adjustment.Thixotropy is according to the mouldability after injection/coating of distributor, in 23 DEG C, turns of E type viscosimeter
When the viscosity of fast 0.5rpm and the viscosity of revolving speed 5rpm, (viscosity of 0.5rpm)/(viscosity of 5rpm) is 2.0 or more and 3.5
Hereinafter, being preferred for the viewpoint of processing.When thixotropy is set in the range, the appropriate flowing for keeping matrix resin
Property, it is surrounded around subassembly 43 even without stop member etc., can also prevent resin from flowing out and expose metal wire 45a,
It prevents from generating gap in the mutual gap metal wire 45a, lower part.
Resist layer 46 is the membranaceous portion of the surface side covering wiring pattern 42 in mounted board 41 and the insulating properties of formation
Part.The material for constituting resist layer 46 does not limit, but in order to inhibit the surface in mounted board 41 and the light of wiring pattern 42
Stray light caused by reflection is different, makes the light reflectivity in the region for being formed with resist layer 46 with uniforming
With light reflective material or light absorption material.
It is the region for carrying 41 surface of mounted board of the i.e. reflector 30 of optical component that optical component, which carries region 47,
It is the region of the surface exposing of not formed resist layer 46 and mounted board 41.Optical component carries region 47 and clips equipped with son
The regional situation of assembly 43 carries region in the two sides of mounted board 41, by abutting reflector 30 and being fixed on optical component
47, reflector 30 can be configured across subassembly 43.
Optical component fixed part 48 is the through hole being arranged in optical component carrying region 47.It is connected to reflector 30
Optical component carries region 47, and the fixation members such as screw are inserted into optical component fixed part from the surface side of mounted board 41
48, mounted board 41 and reflector 30 are fixed on radiator 50.Describe the formation position of optical component fixed part 48 in detail hereinafter
It sets, but arranges subassembly 43 between 2 optical component fixed parts 48.
Fig. 3 is the schematic plan view for showing the mounted board 41 of present embodiment.As shown in Fig. 2, on mounted board 41
It is formed with wiring pattern 42, covering 42 ground of wiring pattern is formed with resist layer 46.As shown in figure 3, being taken in addition to optical component
Carry region 47, the illumination region carrying region 49 for carrying subassembly 43, the part of bond wire line 45a, carrying power-feed connector 44
Power-feed connector equipped section 44a, the region except part that the terminal of power-feed connector 44 connects is formed with resist layer
46。
It is as described above the region for carrying multiple subassemblies 43 that illumination region, which carries region 49, can make left and right directions in figure
It is formed for longitudinal direction and by two column of the arrangement of subassembly 43.In addition, the line L1 that the center of optical component fixed part 48 is connected
For the crosscutting positional relationship of the approximate center that illumination region is carried region 49 along longitudinal direction.
Fig. 4 is the figure that the construction of mounted board 41 of present embodiment is described in detail, and Fig. 4 (a) is exploded perspective view, Fig. 4
It (b) is schematic sectional view.As shown in Fig. 4 (a), mounted board 41 is by metal plate 41a, adhesive sheet 41b and glass epoxy resin
The lit-par-lit structure of layer 41c is constituted.Adhesive sheet 41b and glass epoxy layer 41c be formed with respectively with illumination region pickup zone
Opening portion 49b, 49c of the corresponding shape in domain 49, the position consistency of opening portion 49b, 49c.It can be in adhesive sheet 41b and glass
The presumptive area of epoxy resin layer 41c is pre-formed opening portion 49b, 49c, pastes to location matches, and can also use adhesive sheet
After 41b pastes metal plate 41a and glass epoxy layer 41c, opening portion 49b, 49c are formed together using machining etc..
As shown in Fig. 4 (b), is carried around region 49 in illumination region, be laminated with adhesive sheet 41b and glass epoxy resin
Layer 41c, is formed with wiring pattern 42 and resist layer 46 on glass epoxy layer 41c.Region 49 is carried in illumination region
Partially expose in region corresponding with opening portion 49b, 49c on the surface of inside, metal plate 41a.In addition, due to as described above
Region 47 being carried in optical component, resist layer 46 being not formed, therefore, glass epoxy layer 41c is in optical component pickup zone
Expose in domain 47.
In the light source module 40 of present embodiment, the not formed resist layer 46 in region 47 is carried in optical component, by light
Department of the Chinese Academy of Sciences's part, that is, reflector 30 is directly mounted in glass epoxy layer 41c and fixation.Inhibit as a result, due to 46 film thickness of resist layer
Deviation and the position of the reflector 30 that generates and subassembly 43 is deviateed, can be by the opposite of optical component and light-emitting component 43c
Positional relationship critically aligned in position and with good light distribution characteristic carry out light irradiation.In addition, viscous by being used in metal plate 41a
Contact pin material 41b pastes glass epoxy layer 41c, fills without being formed on metal plate 41a containing high thermal conductivity
The insulating layer of object, can reduce manufacturing process and manufacturing cost.
Fig. 5 is the schematic plan view for showing the light source module 40 of the state equipped with each component on mounted board 41.?
The power-feed connector equipped section 44a and terminal connecting portion of mounted board 41 shown in Fig. 4 are coated with solder, using solder reflux come
The power-feed connector 44 of mounting surface mount type.In addition, region is carried in illumination region in the back side of subassembly 43 with bonding agent
The metal plate 41a exposed in 49 is fixed, and after multiple subassemblies 43 are arranged as two column along longitudinal direction, utilizes wire bonding
Subassembly 43 is electrically connected with wiring pattern 42 with metal wire 45a.It is inhaled finally, applying lighting to multiple metal wire 45a with distributor
The property received resin portion 45 simultaneously solidifies.As described above, by line L1 that the center of optical component fixed part 48 connects along being arranged as two column
The longitudinal direction of subassembly 43 be located at approximate center.
Fig. 6 is the amplification stereogram for amplifying and showing subassembly 43.Subassembly 43 forms multiple on subassembly substrate 43a
Subassembly is routed 43b, carries a plurality of light-emitting elements 43c on subassembly wiring 43b, light reflective resin portion 43d is by multiple hairs
The side of optical element 43c is sealed together.In addition, a part of not formed light reflective resin on subassembly substrate 43a
Portion 43d, the surface of subassembly substrate 43a and subassembly wiring 43b expose.Light-emitting component 43c is light reflective resin portion 43d's
Inside is routed between 43b across adjacent subassembly and is installed with flip-chip.
Subassembly substrate 43a is the approximate rectangular flat-shaped part formed by insulating properties, the good material of heat conductivity,
Such as it is made of Si, AlN etc..Subassembly wiring 43b is formed at the electric conductivity figure on a surface of subassembly substrate 43a
Case is electrically connected with light-emitting component 43c, and metal wire 45a is wire-bonded.
Light-emitting component 43c is electrically connected with 2 metal line 45a, applies component luminous when voltage between metal wire 45a,
It is made of the combination of LED chip and fluorescent material.As LED chip, can be used by blue, purple, ultraviolet light wavelength
Compound semiconductor materials known to gaN series gone out as a light emission etc..As fluorescent material, can be used by primary light
The known materials for exciting and irradiating desired secondary light can be used and obtain and with primary light colour mixture from LED chip
The element of white obtains the element of white using multiple fluorescent materials using the colour mixture of multiple secondary lights.
Light reflective resin portion 43d is to be mixed into the component of light reflective particle in matrix resin, such as can enumerate mixed
The white resin for entering to have the particles such as titanium oxide reflects the light projected by light-emitting component 43c well.In addition, light reflective tree
Side is sealed and filled with by rouge portion 43d with surrounding light-emitting component 43c, and the light irradiated from the side of light-emitting component 43c is reflexed to
Light-emitting component 43c internal direction.It will not be leaked out as a result, from the side light-emitting component 43c to side in shining for light-emitting component 43c,
It is irradiated well from the upper surface of light-emitting component 43c to outside.
As shown in fig. 6, along subassembly 43 longitudinal direction arrange a plurality of light-emitting elements 43c in, adjacent luminous member
The mutual side distance between the surface of part 43c is d1, and the mutual distance between centers of light-emitting component 43c is d2.As shown in Fig. 2, multiple sub- dresses
It is arranged as two arranging and constitute light source portion up and down with 43, extends in longitudinal direction and multiple subassembly substrate 43a are configured adjacently and structure
At first row, and it is adjacent to the subassembly substrate 43a configured with secondary series with first row.
Fig. 7 is to show to carry the enlarged partial sectional view of state of the region 49 equipped with subassembly 43 in illumination region.It is sending out
Light portion is carried on the metal plate 41a that region 49 is exposed, and fixes subassembly substrate 43a with bonding agent, the hair on subassembly substrate 43a
The side of optical element 43c is sealed by light reflective resin portion 43d.Light reflective tree is not formed on subassembly substrate 43a
The region of rouge portion 43d, one end of metal wire 45a are wire-bonded.
In the light source module 40 of present embodiment, a plurality of light-emitting elements 43c is mounted on subassembly substrate 43a, phase
Subassembly for being formed in the surface subassembly substrate 43a is routed 43b, by metal wire 45a wire bonding and supplies electric power.By
This can use the high metal wire 45a of fusing point compared with using solder that light-emitting component 43c is directly mounted on wiring pattern 42
High current is supplied, can be improved the brightness of light source module 40.In addition, by subassembly substrate 43a relative in illumination region pickup zone
The metal plate 41a exposed in domain 49 is carried, and is fixed using the high bonding agent of heat resisting temperature, thus with the light-emitting component that uses solder
The installation of 43c is compared, and heat resisting temperature can be set to height, can further realize high current supply and high brightness.
As shown in fig. 7, the wiring pattern 42 being formed on glass epoxy layer 41c is covered by resist layer 46, but
By the not formed resist layer 46 in the position of the other end wire bonding of metal wire 45a.Metal wire 45a is whole by light absorption resin
Portion 45 seals, and is filled in the wire bonding position at the both ends of metal wire 45a and the top and lower part of metal wire 45a.Light absorption
Resin portion 45 is adjacent to be formed with light reflective resin portion 43d in the wire bonding position of subassembly substrate 43a.It is saved in Fig. 7
The slightly diagram of adhesive sheet 41b.
It is not mounted in via glass epoxy layer 41c as described above, subassembly 43 is carried in region 49 in illumination region
Metal plate 41a, the height dimension of the light-emitting component of subassembly 43 are greater than the thickness of glass epoxy layer 41c.Herein, sub
Assembly 43 light-emitting component height dimension refer to from the bottom surface of subassembly substrate 43a to the upper surface of light-emitting component 43c away from
From e.g. 1.3mm or so.
In the light source module 40 of present embodiment, since the height of subassembly 43 is greater than glass epoxy layer 41c's
Thickness, therefore, the light of subassembly 43 take out the top that face, that is, upper surface light-emitting component 43c is located at glass epoxy layer 41c.By
This, can prevent the light irradiated from subassembly 43 to be injected into the side of glass epoxy layer 41c and be blocked, can be well
It takes out light and light irradiation is carried out with desired light distribution characteristic.
In the light source module 40 of present embodiment, with adhesive sheet 41b by metal plate 41a and glass epoxy layer
After 41c fitting, optical component fixed part 48 is formed from the back side punch process of mounted board 41.Glass epoxy layer
When the thickness of 41c is 0.05mm~0.2mm, preferably 0.075mm~0.15mm, produced in metal plate 41a when punch process
Raw flash can be inhibited by glass epoxy layer 41c, can be by the critically aligned in position and solid of optical component, that is, reflector 30
It is fixed.
Fig. 8 is the amplification view that amplification shows that illumination region carries 49 periphery of region.As shown in figure 8, light absorption resin
Portion 45 seals multiple metal wire 45a together, and the lead key of subassembly 43 is covered from the wire bonding position of wiring pattern 42
Coincidence is set, and is formed and is arrived the position adjacent with light reflective resin portion 43d.In addition, subassembly 43 is multiple along left and right directions arrangement,
And two column are adjacent to configuration in above-below direction, constitute light source portion of the invention.
In the light source portion that subassembly 43 is arranged in upper and lower two column, light-emitting component 43c is also arranged as two column, shown in Fig. 8
Line L2 is the illuminated centerline for showing the middle position of two column light-emitting component 43c.Illuminated centerline L2 with by light shown in fig. 5
The line L1 for learning the center connection of component fixing section 48 is roughly the same, in the extension of the illuminated centerline L2 of a plurality of light-emitting elements 43c
On line, it is fixed with optical component i.e. reflector 30.
In the light source module 40 of present embodiment, due to the line L1 and son for connecting the center of optical component fixed part 48
The illuminated centerline L2 of assembly 43 is roughly the same, therefore, even if inferior the case where mounted board 41 generates warpage, by sending out
Reflector 30 is engaged on light center line L2 to reduce warpage, can suitably set the positional relationship of light source portion and optical component.
In addition, illumination region can be made to carry region when engaging mounted board 41 and reflector 30 including comprising radiator 50 together
49 back side is close to radiator, can obtain heat dissipation characteristics same as the mounted board 41 of not warpage.
The wire bonding position of wiring pattern 42 carries upper following setting in the figure in region 49 along illumination region, relative to figure
In above-listed subassembly 43 top is by metal wire 45a wire bonding from figure, relative to subassembly 43 following in figure from figure
Lower section is by metal wire 45a wire bonding.So first row and secondary series light-emitting component 43c are located at the metal connecting with first row
Between line 45a and the metal wire 45a being connect with secondary series.
In Vehicular lamp 100 of the invention, via power-feed connector 44, wiring pattern 42, metal wire 45a, subassembly
It is routed 43b, light-emitting component 43c is selectively supplied electric power from outside, light-emitting component 43c is lighted.Constituting the multiple of light source portion
In subassembly 43, the light-emitting component 43c selected is lighted, thus determine light source portion it is whole with light distribution, via reflector 30
It is two-dimensional with optical mode to irradiating in front of Vehicular lamp 100 using ADB technology with lens 10.
(second embodiment)
Next, illustrating second embodiment of the present invention using Fig. 2.It is omitted with the duplicate content of first embodiment
Explanation.In the present embodiment, it can be also applicable in the case where not using ADB technology.The composition and light source of Vehicular lamp 100
The composition of module 40 is same as first embodiment, omits the description.
Fig. 9 is the chart for showing the synthesis brightness of adjacent light-emitting component 43c in present embodiment, and Fig. 9 (a) is to show
The distance of light-emitting component 43c is remote out and synthesizes the inadequate example of brightness, Fig. 9 (b) be show light-emitting component 43c distance it is close and close
At the sufficient example of brightness.Horizontal axis in figure shows the position of the longitudinal direction along subassembly 43, and the longitudinal axis shows brightness.In figure
Dotted line the brightness from 1 light-emitting component 43c light irradiated is shown, the solid line in figure is shown from 2 adjacent light-emitting component 43c
The synthesis brightness of the light of irradiation.
In the case that the side distance between the surface d1 of adjacent light-emitting component 43c shown in Fig. 6 is more than 0.6mm, such as Fig. 9 (a)
Shown, the peak value for synthesizing brightness is small, compared with the brightness irradiated from 1 light-emitting component 43c, improves several % or so.By making
Side distance between the surface d1 is 0.6mm hereinafter, as shown in Fig. 9 (b), and the peak value for synthesizing brightness increases, and shines with from 1 light-emitting component 43c
The brightness penetrated is compared, and can be improved 20% or more.In particular, in the case where applicable ADB technology, due to making light-emitting component 43c
Selectivity is lighted to be lighted with non-, and critically controls irradiation area and non-irradiated region, and therefore, the synthesis brightness of irradiation area is high
When, it can be improved the contrast with non-irradiated region, be preferred.
In the case that distance between the surface d1 is less than 0.1mm in side, the light reflective resin portion of the side of light-emitting component 43c is filled
The thickness low LCL of 43d, light lead to brightness itself decline from 1 light-emitting component 43c light irradiated from side leakage.Separately
Outside, light causes synthesis brightness that can also decline from side leakage.In particular, lighting light-emitting component in the applicable ADB choice of technology
In the case where 43c, it is possible to cause from the light of side leakage in the same manner as luminous from non-lit up light-emitting component 43c according to
It penetrates, it is difficult to irradiate desired two-dimensional with optical mode.
By the case where including a plurality of light-emitting elements 43c in subassembly 43 as the light source module 40 of present embodiment and
A previous LED chip as distance between the light-emitting component 43c in the case where chip size package (CSP) and is synthesized bright
The relationship of degree is as shown in table 1.Using previous chip size package and the case where light-emitting component interval is set as 0.6mm
Under synthesis brightness be 100, relative value is shown.
[table 1]
As shown in table 1, it is 100 that 0.6mm is divided into previous chip size package, between light-emitting component, synthesizes brightness,
Between be divided into 0.2mm, synthesis brightness be 119.On the other hand, in the subassembly of present embodiment 43, the side of light-emitting component 43c
Between distance d1 be 0.6mm, synthesis brightness be 112, spacing 0.2mm, synthesis brightness be 140, spacing 0.1mm, synthesize brightness
It is 147.
So the side distance between the surface d1 of light-emitting component 43c preferably exists in the light source module 40 of present embodiment
The range of 0.1mm~0.6mm.The mutual interval the mutual light-emitting component 43c of multiple subassemblies 43 similarly preferably 0.1mm~
The range of 0.6mm.Side distance between the surface d1 by be in the range, so as to prevent light from side leakage and improve synthesis it is bright
Degree.In addition, can be improved the contrast of irradiation area and non-irradiated region, and good in the case where applying ADB technology
Ground irradiation is desired two-dimensional with optical mode.
The present invention is not limited to above-mentioned each embodiments, can make various changes in the range shown in claim,
Different embodiments embodiment obtained from disclosed technical solution is appropriately combined respectively is also contained in technology of the invention
In range.
Claims (9)
1. a kind of light source module characterized by comprising
A plurality of light-emitting elements；
Multiple metal wires are supplied respectively to electric power to each light-emitting component；
Light reflective resin portion seals at least part of the side of the light-emitting component；And
Light absorption resin portion, by the metal linear sealing.
2. light source module as described in claim 1, which is characterized in that
The light reflective resin portion is filled between the adjacent light-emitting component, by the light-emitting component of predetermined quantity
Side seal together.
3. light source module as claimed in claim 1 or 2, which is characterized in that
The light absorption resin portion seals the metal wire of predetermined quantity together.
4. light source module as described in any one of claim 1 to 3, which is characterized in that
Subassembly including being formed with subassembly wiring on a surface,
Along the first direction of the subassembly, multiple light-emitting components, the metal are carried in subassembly wiring
Line and subassembly wiring connect.
5. light source module as claimed in claim 4, which is characterized in that
Multiple subassemblies are arranged as the first row extended in the first direction.
6. light source module as claimed in claim 5, which is characterized in that
Further, multiple subassemblies are adjacent to row with the first row as the secondary series extended in the first direction
Column.
7. the light source module as described in claim 1 or claim 2, which is characterized in that
The range of the side distance between the surface of the adjacent light-emitting component is 0.1mm~0.6mm.
8. the light source module as described in claim 1 or claim 2, which is characterized in that
Light absorption resin portion uses silicone resin as matrix resin.
9. a kind of Vehicular lamp, which is characterized in that
Described in any item light source modules including claim 1 to 6,
Multiple metal wires and multiple light-emitting components are selectively supplied electric power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2017143550A JP2019029057A (en) | 2017-07-25 | 2017-07-25 | Light source module and vehicular lighting fixture |
| JP2017-143550 | 2017-07-25 |
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| CN109296987A true CN109296987A (en) | 2019-02-01 |
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| CN201810827497.2A Active CN109296987B (en) | 2017-07-25 | 2018-07-25 | Light source module and vehicle lamp |
| CN201821192220.9U Active CN208735547U (en) | 2017-07-25 | 2018-07-25 | Light source module and Vehicular lamp |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821192220.9U Active CN208735547U (en) | 2017-07-25 | 2018-07-25 | Light source module and Vehicular lamp |
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| JP2019029057A (en) * | 2017-07-25 | 2019-02-21 | 株式会社小糸製作所 | Light source module and vehicular lighting fixture |
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| Publication number | Publication date |
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| JP2019029057A (en) | 2019-02-21 |
| CN208735547U (en) | 2019-04-12 |
| CN109296987B (en) | 2023-04-07 |
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