CN202056665U - Linear light source device - Google Patents
Linear light source device Download PDFInfo
- Publication number
- CN202056665U CN202056665U CN2011200646608U CN201120064660U CN202056665U CN 202056665 U CN202056665 U CN 202056665U CN 2011200646608 U CN2011200646608 U CN 2011200646608U CN 201120064660 U CN201120064660 U CN 201120064660U CN 202056665 U CN202056665 U CN 202056665U
- Authority
- CN
- China
- Prior art keywords
- light source
- light
- source device
- supporter
- substrate
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Led Device Packages (AREA)
- Planar Illumination Modules (AREA)
- Facsimile Heads (AREA)
Abstract
The utility model provides a linear light source device which is small and has an excellent heat dispersion structure. The linear light source device (1) comprises a luminous element (10), a substrate (11) equipped with the luminous element, a light conductor (30) having a light incident surface (31) opposite to the luminous element and a light exiting surface (32) at a different plane from the light incident surface and linearly extending along the length direction, and a supporting body (40) having a recess (41) supporting the light conductor in the entire length direction and being different from the light exiting surface portion. The supporting body is made of metal, and the substrate and the supporting body are connected through same metallic portions (51, 52) inserted in the substrate and the supporting body.
Description
Technical field
The utility model relates to the employed linear light source device of illumination light source of the image read-out of uses such as a kind of facsimile machine, duplicator, image reading apparatus, bar code reader.
Background technology
In recent years, in image read-outs such as individual facsimile machine, because of the raising of the output of light emitting diode (hereinafter referred to as LED), and as highly sensitiveization of the CCD type sensor of photo detector, small-sized and LED low power consumption is used as reading light supply apparatus.For example known have a following linear light source device: the end configuration LED of the light conductor of the wire that constitutes at the resin by light transmission, what make LED luminously incides light conductor and in internal reflection, and penetrates to the outside from required direction, thereby forms the light source of wire.
Fig. 7 be expression as the formation of the linear light source device shown in the patent documentation 1 of conventional example, the length direction sectional view.
Linear light source device 8 has: the light conductor 8 that is made of rectangular translucent resin; With the LED83 that is installed in the white on the substrate 82.On substrate 82 and the face face opposition side that LED83 has been installed, engaged the heat sink 85 of aluminum via conducting-heat elements 84.Further, on this heat sink 85, form to the outstanding radiator shutter 86 of the direction of LED83 opposition side.
According to this linear light source device 8, the heat that LED83 can be produced is via heat sink 85 that is configured in the rear and radiator shutter 86 heat radiations.
Patent documentation 1:JP spy opens the 2009-25679 communique
And in original document reading apparatus that has carried these linear light source devices etc., further advanced miniaturization.
But the size of the original copy that reads is existing fixed dimension, therefore in order to make equipment miniaturization, need reduce the Lights section part in addition.
For the heat radiation of LED, above-mentioned radiator preferably is set, but, therefore can't realizes miniaturization because they can increase width in the longitudinal direction.And,, can't reduce the volume of radiator in order to keep equal thermal diffusivity.
That is, existence must make the problem of the miniaturization of linear light source device own in the maintenance heat dispersion the same with prior art.
The utility model content
Therefore, the purpose of this utility model is to provide a kind of linear light source device of the small-sized and structure that thermal diffusivity is good.
For solving above-mentioned problem, the technical solution of the utility model 1 described utility model is a kind of linear light source device, comprising: light-emitting component; The substrate of this light-emitting component has been installed; Light conductor, it has the light relative with above-mentioned light-emitting component and is taken into face, and has and be taken on the different face of face the light emergence face that linearity along its length extends with this light; And supporter, it has the recess in the part different with light emergence face of the above-mentioned light conductor of whole length direction upper support, described linear light source device is characterised in that, above-mentioned supporter is made of metal, and the inside of aforesaid substrate and above-mentioned supporter is connected with same metal parts in the supporter to this substrate by injection.
And technical scheme 2 described utility models are characterised in that in technical scheme 1 described linear light source device, aforesaid substrate is connected by a plurality of metal parts with above-mentioned supporter.
And technical scheme 3 described utility models are characterised in that in technical scheme 1 or 2 described linear light source devices, above-mentioned metal parts is a screw, and is screwed to above-mentioned supporter.
And technical scheme 4 described utility models are characterised in that in technical scheme 1 or 2 described linear light source devices, above-mentioned metal parts is an alignment pin, and is pressed into above-mentioned supporter.
And technical scheme 5 described utility models are characterised in that in technical scheme 2 described linear light source devices, above-mentioned a plurality of metal parts comprise: the screw that is screwed to above-mentioned supporter; With the alignment pin that is pressed into above-mentioned supporter.
And, technical scheme 6 described utility models are characterised in that, in technical scheme 1～5 in each described linear light source device, on above-mentioned supporter, be formed with and be used for the above-mentioned metal parts of injection and with the groove of the mode opening that alongst extends.
According to the utility model, constitute the light conductor supporter to replace radiator by metal, the substrate that light-emitting component has been installed is connected by same metal parts with light conductor, thereby can obtain equal radiating effect.
Therefore, need not the radiator shutter at substrate rear etc., can make the linear light source device miniaturization.
Description of drawings
Fig. 1 is the figure of the linear light source device that relates to of expression the utility model, is the side view of observing the substrate-side end face (a), (b) is the front elevation that will dispose about length direction, (c) is A-A ' line sectional view.
Fig. 2 is Fig. 1 figure of half-twist in a circumferential direction of the linear light source device that will relate to as the utility model, is the side view of observing the substrate-side end face (a), (b) is the front elevation that will dispose about length direction, (c) is B-B ' line sectional view.
Fig. 3 is the schematic diagram that is used to illustrate action effect of the present utility model.
Fig. 4 is the figure of expression as the various experiment conditions of the linear light source device of conventional example and comparative example.
Fig. 5 is the figure of the various experimental results of the linear light source device that relates to of expression the utility model.
Fig. 6 is the figure of the experimental result of the linear light source device that relates to of expression the utility model.
Fig. 7 is the length direction sectional view of the linear light source device that relates to of expression conventional example.
Symbol description
Linear light source device 1
Light-emitting component 10
Connecting portion 20
Reflection facial 21
Reflecting part 33
Recess 41
Scattered reflection parts 42
Groove 43a
Groove 43b
Plate 48
Screw 51
Screw 55
Linear light source device 8
LED?83
Conducting-heat elements 84
Heat sink 85
The specific embodiment
Embodiment of the present utility model is described.Fig. 1 is the figure of expression linear light source device of the present utility model, is the side view of observing the substrate-side end face (a), (b) is the front elevation that will dispose about length direction, (c) is the sectional view that cuts off along A-A ' line.
And Fig. 2 is with Fig. 1 figure of half-twist in a circumferential direction, and same (a) is side view, (b) is front elevation, (c) is B-B ' line sectional view.
And above-mentioned Fig. 1,2 position the relation also difference of the ejaculation direction by the light represented with arrow in Fig. 1 (a), Fig. 2 (a) and Fig. 3 (a) are represented.
In Fig. 1 (b), an end of the length direction of the light conductor 30 that constitutes at the resin material by light transmission is on the left part, disposes metal connecting portion 20 and metal substrate 11.Light conductor 30 support the back side that is in the paper inboard by metal supporter 40, and the part of paper front side is fixed complementaryly by spring material 53 in the figure.
On the face of light conductor 30 sides of substrate 11, be provided with the connector 12 that is used to power.
In addition, this substrate 11 for example is metals such as copper, but is formed with not shown insulating barrier on substrate 11, and the wiring pattern from the light-emitting component to the connector etc. is embedded in this insulating barrier, thus not can with connecting portion 20 short circuits.
Shown in Fig. 1 (a), alignment pin 52 and screw 51 that roughly rectangular substrate 11 is used as the metal member made connect, and are fixed on the supporter 40 with being positioned at its inboard connecting portion 20.
Shown in Fig. 1 (c), the part of the cross sectional shape of light conductor 30 is semicircle shape roughly, and this part is extended in the longitudinal direction, is the light emergence face 32 that plays the effect of lens.The opposition side different with this light emergence face 32 supported by the recess 41 of supporter 30, for the light guiding that will incide light conductor 30 is penetrated direction to the light of arrow, and is formed with roughly jagged reflecting part (not shown).
And, be provided with the scattered reflection parts on the surface of recess 41, make the light reflection that sees through from jagged reflecting part roughly, and incide light conductor 30 once more.
Part at the circumferencial direction of light conductor 30 is formed with protuberance 34, and this protuberance 34 is fixed to supporter 40 by spring material 53 complementaryly.
Be formed with groove 43a, the 43b of cross section circle of a part of opening of circumferencial direction at the outer surface of supporter 40, and alongst extend.
These grooves play the effect of the screw of injection alignment pin 52 and screw 51 etc. respectively, when screwing togather screw 51, form the screw as negative thread.
And the outer surface by the part opening at supporter 40 is formed with a plurality of protuberances 44, and this protuberance 44 increases the surface area of supporter 40, plays the effect of radiator shutter.
In Fig. 2 (b), LED as light-emitting component 10 is installed in the one side of substrate 11.Between substrate 11 and the light conductor 30, dispose inside formed reflection facial 21, as the connecting portion 20 of metal clamp dog.
To be taken into face as the light of the left end face of light conductor 30 in this installed surface side disposes relatively.
Connecting portion 20 is used for the location between light-emitting component 10 and the light conductor 30, the light that light-emitting component 10 is radiated efficiently is directed to light conductor 30.
Material for example is metals such as aluminium, also can be made of resin etc.
In linear light source device 1 of the present utility model, break-in is taken into the inside that face incides light conductor 30 from light to the light that penetrates from light-emitting component 10 by the reflection facial 21 of connecting portion 20.
The light of incident is when advancing along its length in inside, and its part reflects to predetermined direction by reflecting part, and injects to the outside from light emergence face 32.
Thereby, penetrated from the light of the continuous in the longitudinal direction wire of light emergence face 32 beginnings.
Fig. 3 is the schematic diagram that is used to illustrate action effect of the present utility model, expression installed light-emitting component substrate, with the mechanicalness annexation of light conductor supporter.
In the length direction left end of the supporter 40 that supports light conductor 30, dispose connecting portion 20 and the substrate 11 that light-emitting component 10 has been installed.As mentioned above, supporter 40 inside are arrived in screw 51 and alignment pin 52 injection that connect substrate 11 and connecting portion 20.Particularly, screw 51 is screwed to screw, and alignment pin 52 is pressed into.
The heat that produces when using light-emitting component 10 at first is transmitted to the substrate 11 that is positioned at rear (left side).If radiator further is set in the wings as thermal component, then can suitably dispel the heat, but described in problem of the present utility model, radiator is unsuitable for miniaturization with respect to this substrate 11.
Therefore, constitute the supporter 40 that supports light conductor 30, come alternative heat spreader with metal material.And the heat-conducting unit of substrate 11 and supporter 40 is undertaken by screw 51 and the alignment pin 52 as metal parts.
Therefore, substrate 11 successfully carries out to the heat conduction of supporter 40, carries out the heat radiation equal with radiator by this supporter 40, therefore need not to be configured in the radiator at substrate 11 rears.That is, can dwindle the space of the length direction of linear light source device 1.
For confirming above-mentioned cooling effect, the temperature measuring experiment when using linear light source device of the present utility model to turn on light.In temperature measuring,, the various linear light sources of the having or not of metal parts such as changing the having or not of radiator, alignment pin and screw, the material of connecting portion, the material of supporter etc. have been used to the linear light source device of Figure 1 and Figure 2.
Fig. 4 (a)～(c) and Fig. 5 (a)～(d) are the schematic diagrames to the mechanicalness annexation of substrate shown in the linear light source device of experiment condition 1～7, that expression and Fig. 3 are same and light conductor supporter.Discuss the details of the various conditions among these figure after a while.
Wherein, the formation of having added the mark identical with Fig. 3 plays same effect, therefore omits explanation.
Fig. 6 represents the experiment condition 1～7 and the temperature measuring result thereof of various linear light source devices.
The light-emitting component that experiment is used is the simulation White LED that has been coated with yellow fluorophor on blue light emitting device, and the LED input current value is 200 (mA).
In the temperature measuring,, measure the temperature when temperature reaches capacity everywhere to LED connector temperature (component temperature), LED substrate temperature, light conductor supporter (being taken into the position of face 15mm apart from light) temperature.In addition, connector temperature is according to by the thermoelectricity that is installed on the LED packed part that joins with substrate the temperature that determines being calculated.
Wherein, the metal that uses in connecting portion and the supporter is an aluminium, and alignment pin is the SUS system, and screw is made of iron.
Fig. 4 (a) is the linear light source device that illustrates at condition (1).This condition is the linear light source device as conventional example, is provided with radiator 54 at the rear of substrate 11.Do not have alignment pin 52, substrate 11 only is fixed to resinous supporter 30 by screw 51.
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 41.9 ℃, the LED substrate temperature is 33 ℃, the supporter temperature is 21.1 ℃, the hot non-conducting that hence one can see that is produced by light-emitting component is passed through radiator heat-dissipation to supporter.
Linear light source device of the present utility model is a benchmark with this condition 1, requires the heat dispersion of equal extent.In the evaluation of the radiating effect of various conditions, when 1 the same with this condition, be that the following markers of 45 degree is designated as ◎ as the LED connector temperature of component temperature, have enough effects when 50 degree are following in addition and be labeled as zero, surpass 50 spend markers and be designated as *.
Fig. 4 (b) is the linear light source device that illustrates at condition (2), is the structure of having removed radiator from Fig. 4 (a).
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 74.7 ℃, the LED substrate temperature is 68 ℃, the supporter temperature is 21.2 ℃, it is insufficient to dispel the heat.As can be known under this condition, because of heat is distributed nowhere, so the LED connector temperature becomes high temperature.
Fig. 4 (c) is the linear light source device that illustrates at condition (3), and connecting portion 20 and supporter 30 are made of metal, are the structures that each parts is made it to be close to from the two ends pushing.
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 62.3 ℃, the LED substrate temperature is 54.7 ℃, the supporter temperature is 24.82 ℃, it is insufficient to dispel the heat.
This means that even each structure is made of metal entirely, the conduction of the heat that LED produces is also bad.The heat that produces from the light-emitting component 10 as LED temporarily is transmitted to the substrate 11 that is positioned at the rear, but is transmitted to supporter 40 via the connecting portion 20 as miscellaneous part afterwards.Therefore, the conduction of the heat that hindered of small gap between parts.
Fig. 5 (a) is the linear light source device that illustrates at condition (4), be with as the same structure of Fig. 3 of the present utility model.
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 42.6 ℃, the LED substrate temperature is 35.5 ℃, the supporter temperature is 29 ℃, has obtained better heat radiating effect.
This condition means, the heat that produces as the light-emitting component 10 of LED is transmitted to metal supporter 30 well by screw 51 and alignment pin 52.
Therefore, the supporter temperature rises than condition 1～3, and the LED connector temperature reduces, and has and equal heat dispersion when being provided with radiator shutter.
This is because when screwing togather screw or pressure pin, connect between the parts of the injection of exerting pressure, therefore do not produce the leeway in gap between the parts, and metal parts is because of the ductility slightly deformed, the gap is also by landfill, be close to thereby make between the parts, very close to each other substantially, so heat conduction is good.
Fig. 5 (b) is the linear light source device that illustrates at condition (5), is the structure of having removed alignment pin 52 from Fig. 5 (a).
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 43.3 ℃, the LED substrate temperature is 36.5 ℃, the supporter temperature is 28.9 ℃, has obtained better heat radiating effect.
Fig. 5 (c) is the linear light source device that illustrates at condition (6), is the structure of having removed screw 51 from Fig. 5 (a).
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 48.5 ℃, the LED substrate temperature is 35.5 ℃, the supporter temperature is 25.7 ℃, has obtained sufficient radiating effect.
Mean when metal parts is connected substrate 11 with supporter 30 arbitrarily, to have sufficient radiating effect under these conditions.Comparing temperature when screwing togather screw with pressure pin low is because increase because of ridge makes the contact area between the parts.
Fig. 5 (d) is the linear light source device that illustrates at condition (7), and connecting portion is a resin in the formation of Fig. 5 (a).
Temperature during turning on light under this condition as shown in Figure 6, the LED connector temperature is 49.4 ℃, the LED substrate temperature is 41.9 ℃, the supporter temperature is 26.2 ℃, has obtained sufficient radiating effect.
This condition means, when connecting portion 20 is not metal but resin, also has radiating effect.That is, the heat of conducting from substrate 11 is not via the connecting portion conduction, but via screw 51 and alignment pin 52 conduction.
Therefore, constitute the light conductor supporter with alternative heat spreader, and the substrate that light-emitting component will be installed is connected by same metal parts with light conductor, thereby can obtains equal radiating effect by metal.Therefore, need not the radiator at substrate rear etc., can make the linear light source device miniaturization.
Claims (6)
1. a linear light source device comprises: light-emitting component; The substrate of this light-emitting component has been installed; Light conductor, it has the light relative with above-mentioned light-emitting component and is taken into face, and has and be taken on the different face of face the light emergence face that linearity along its length extends with this light; And supporter, it has the recess in the part different with light emergence face of the above-mentioned light conductor of whole length direction upper support, and described linear light source device is characterised in that,
Above-mentioned supporter is made of metal,
The inside of aforesaid substrate and above-mentioned supporter is connected with same metal parts in the supporter to this substrate by injection.
2. linear light source device according to claim 1 is characterized in that, aforesaid substrate is connected by a plurality of metal parts with above-mentioned supporter.
3. linear light source device according to claim 1 and 2 is characterized in that above-mentioned metal parts is a screw, and is screwed to above-mentioned supporter.
4. linear light source device according to claim 1 and 2 is characterized in that above-mentioned metal parts is an alignment pin, and is pressed into above-mentioned supporter.
5. linear light source device according to claim 2 is characterized in that, above-mentioned a plurality of metal parts comprise: the screw that is screwed to above-mentioned supporter; With the alignment pin that is pressed into above-mentioned supporter.
6. linear light source device according to claim 1 and 2 is characterized in that, is formed with to be used for the above-mentioned metal parts of injection and with the groove of the mode opening that alongst extends on above-mentioned supporter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-069123 | 2010-03-25 | ||
| JP2010069123A JP2011203396A (en) | 2010-03-25 | 2010-03-25 | Linear light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202056665U true CN202056665U (en) | 2011-11-30 |
Family
ID=44880114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200646608U Expired - Lifetime CN202056665U (en) | 2010-03-25 | 2011-03-10 | Linear light source device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2011203396A (en) |
| CN (1) | CN202056665U (en) |
| TW (1) | TWM415264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865512A (en) * | 2012-09-17 | 2013-01-09 | 威海华菱光电股份有限公司 | Transmission light source for contact image sensor |
-
2010
- 2010-03-25 JP JP2010069123A patent/JP2011203396A/en active Pending
-
2011
- 2011-01-12 TW TW100200634U patent/TWM415264U/en not_active IP Right Cessation
- 2011-03-10 CN CN2011200646608U patent/CN202056665U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865512A (en) * | 2012-09-17 | 2013-01-09 | 威海华菱光电股份有限公司 | Transmission light source for contact image sensor |
| CN102865512B (en) * | 2012-09-17 | 2015-12-02 | 威海华菱光电股份有限公司 | Transmission light source for contact image sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011203396A (en) | 2011-10-13 |
| TWM415264U (en) | 2011-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204885821U (en) | Semiconductor component cooling structure and have its electronic equipment | |
| US8342734B2 (en) | Vehicular light source unit | |
| CN102007830B (en) | Thermally conductive mounting element for attachment of printed circuit board to heat sink | |
| JP3842257B2 (en) | Lighting device | |
| CN201585231U (en) | Electronic device with heat insulation structure | |
| CN101162816B (en) | Electric connector | |
| CN103119357A (en) | Circuit module, light-emitting module, and vehicle lamp | |
| CN102159873A (en) | Light-emitting arrangement | |
| CN101943332A (en) | Component structure of light-emitting diode light source with heat radiation base | |
| CN101619840A (en) | Light source module and LED lamp using same | |
| CN103968279A (en) | Lamp Device, Light-Emitting Device and Luminaire | |
| CN103988013B (en) | LED light device | |
| CN204829426U (en) | Lamp device and lighting device | |
| CN103047623A (en) | Mounting device for lighting sources | |
| CN202056665U (en) | Linear light source device | |
| CN103075644B (en) | LED light device | |
| JP2010135126A (en) | Led lighting device | |
| CN104061462A (en) | Lamp Device And Luminaire | |
| CN101556024B (en) | Lamp reflector of side light type back light die set | |
| CN105423152B (en) | A kind of LED light | |
| EA015530B1 (en) | Outdoor-type high-power light emitting diode illumination device | |
| CN208384179U (en) | A kind of radiator of miniature high-speed rate optical module | |
| CN203202761U (en) | Bar-type lamp | |
| TW201008468A (en) | LED apparatus and the PCB thereof | |
| CN208397741U (en) | A kind of high power LED bar lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |