CN205806977U - Solid state illumination device and light fixture - Google Patents

Abstract

Present disclose provides a kind of solid state illumination device and light fixture, its heat dissipating ability providing improvement remains specific desired user security characteristic simultaneously.This equipment includes tubulose chimney structure, and the heat-dissipation member from the inside being contained in equipment is extended to the outside opening formed by the exterior light exit window of equipment.This chimney includes non-linear shape, and it prevents the linear object inserting in described opening from contacting with described thermal diffusion component.Relatively large outside opening and Diameter of chimney can be provided, it is allowed to the air the passing through dissipation element/heat flow rate of improvement, and prohibit the accidental shock that the linear object that user inserts via the outside opening by being provided is caused simultaneously.

Description

Solid state illumination device and light fixture

Technical field

It relates to a kind of solid state illumination device, a kind of have consolidating of the air duct for the dissipation of heat State luminaire.

Background technology

Such as the solid state light emitter positive growth of light emitting diode (LED) it is applied to various illumination and signal sends application.LED Long-life, high luminous efficiency, low operating voltage and lumen is included than the advantage of the conventional light source of such as electric filament lamp or fluorescent lamp The fast modulation of output.LED light source additionally provides the energy efficiency of notable growth, and it has minimizing for CO2 emission Environmental effect.

But, still there are many significantly challenges to have to be overcome in the development of technology, these are currently all limiting it The potential width of application.The most key in these challenges it is probably heat.LED chip produces substantial amounts of the most naturally Heat, these heat dissipate away effectively without from die package, it is possible to LED chip can be made to deteriorate, and shorten it overall Life-span.The result of this problem is, LED technology application in the field needing the output of high lumen is particularly subject to harsh limit System.Especially, " remodeling " of the existing lamp fitting with LED-based bulb cannot be used directly for requiring that high-strength light is defeated at all The application gone out.

Be improve the luminous efficiency (λ) of LED chip to obtain a way of high lumen LED ability, thus for The given output generating heat realizes bigger light output.But, luminous efficiency subjects its developing natural bottleneck, its limit Even if having made the degree that luminous efficiency can increase in theory.

The substitution method used recently is led to by setting up the special Heat transmission in the structure of access arrangement itself The heat dissipating ability of LED illumination device is sought directly to improve in road.Especially, have employed permission air flowing and pass through illumination The air duct of the zone line of equipment thus allow heat to leave from equipment.One example of this equipment is at US 2010/ Disclosed in 0073944 A1.

Figures 1 and 2 show that the example utilizing the luminaire of this conception of species as known in the art.Bulb structure 12 include under encapsulated molding (overmould) structure 18, it contains multiple LED light source 24, and light source is thermally coupled to thermal diffusion Element 22.Be coupled to shell structure is upper window structure 16, and it includes light exit window 30.Upper window structure includes hollow Chimney element 20, its opening in the top being formed at light exit window and the centre limited by the surface of thermal diffusion component Advance between cavity.Chimney allows air at the surrounding round bulb structure and the cavity that limited by thermal diffusion component Between flow.By this way, heat can transmit from thermal diffusion component (its conduction is from the heat of LED chip 24), and Pass outwardly the top of bulb structure.

This structure improves the dissipation of heat efficiency of bulb greatly.But incorporate the chimney for allowing air to flow Structure 20 introduces new difficulty equally, especially with regard to safety.As described in Figure 1, it is provided that advance from the surface of equipment Open channel to assembly therein brings user and carries out accident by contact with these assemblies via chimney structure The probability of contact.Li particular, it is possible to by inserting such as thin metal bar or the conduction line elements of wiring 14 through chimney And touch thermal diffusion component 22, and thus produce conductive contact with the metal assembly of equipment.If thermal diffusion component band Electricity (such as, wittingly or due to short circuit), just has the probability that user gets an electric shock.

This risk is not only undesirable for the angle of design, and additionally violates the product of multiple legal order Product safety legislation.Especially, there is such requirement in the U.S., i.e. can not have any length by insertion and there is 2mm The linear metal bar of diameter and touch charged or may be charged part.

The equipment of prior art has sought to by simply restricting the straight of the ingate that is formed through light exit window This difficulty is broken away from footpath (such as, being restricted to less than 2mm).But, the efficiency of the chimney as heat flow passage is just made by this Become serious restriction, owing to this aperture limits air and therefore hot possible turnover rate.

Therefore desired should be a kind of to allow air flowing between environment and dissipation of heat intraware around to have The LED illumination device improved, but the most therefore it introduce the above-mentioned unexpected user risk by electricity.

Utility model content

The disclosure is defined by the claims.

According to an aspect of this disclosure, it is provided that a kind of solid state illumination device, comprising:

First module, accommodates thermal diffusion component；

Multiple solid-state light emitting elements, are thermally coupled to thermal diffusion component；And

Second module, limits the light exit window for solid-state light emitting element, and engages with the first module, the second module Including opening and from described opening to thermal diffusion component carry out the tubular structure that extends for by opening to from thermal diffusion unit The heat of part transmits, and tubular structure has non-linear shape, and it prevents from inserting the linear object in opening and thermal diffusion component Contact.

This tubular structure provides passage or pipeline, it is allowed to air is round the environment of equipment be contained in the first mould The flowing between thermal diffusion component in block.Heat is conducted away from solid-state light emitting element by the thermal diffusion component of thermal coupling, and The tubular structure then passing through (filling air) is gone out from device transmission.

Tubular structure (or " chimney ") has the shape such as bent of non-linear, thus forbids utilizing linear object to penetrate The intraware of equipment.Especially, tubular structure can include multiple wall part, and it is arranged so that unit from opening to thermal diffusion The each linear virtual route of the zone line of part extends through at least one in described wall part.Therefore, real according to this Execute example, there is not such path, i.e. insert the linear rod in the opening of light exit window or pin can be led to by this path Crossing and penetrate into thermal diffusion component, this is owing to being constantly present at least one (tubular structure) hindering the linear paths inserting object The wall part of solid-state.Therefore, by carrying out conductive contact via the linear conducting element of such as metal bar and heat diffuser Electric shock risk is overcome by the disclosure, owing to linear conducting element can not deform thus mate tubular structure, i.e. chimney Non-linear shape.

Except the open tubular structure in light exit window also may be used from its embodiment carrying out extending luminaire To include another opening, being in fluid communication with by the opening of light exit window, wherein thermal diffusion component is positioned at opening with another Between one opening.

This second opening can allow the air flowing of the improvement across thermal diffusion component, such as, allow at the first opening And the more stable and lasting flowing of the air between another opening.The air flow stability improved or air velocity improve From the dissipation of heat rate of thermal diffusion component (and therefore from solid-state light emitting element), this is owing to more heat may be delivered by heat The machinery of the increase of air transports and is migrated by the replacement of the colder air from surrounding.

In the exemplary embodiment, thermal diffusion component can include middle cavity, and tubular structure is in fluid communication with it.Pipe Shape structure can extend in described cavity.Thermal diffusion component can such as include one or more heat transfer surface, its limit Fixed or partially defined crossed intermediate air cavity.Cavity can be such as open to the outside world in its end, the wall of heat diffuser or " side " of cavity is defined by person's wall part.By this way, the heat diffuser carrying out with the air of process contacting Total surface area can be maximized at any time.

In a particular embodiment, tubular structure can have coil or spiral-shaped.In this example, non-linear For " three-dimensional " non-linear, such as, make the bending of chimney structure be not limited only to the bending within single plane, be also limited to " coil " is around the bending of some jackshafts.This jackshaft is such as not necessary for linear, and the radius bent need not Constant.

Tubular structure can have rectangle (oblong) or the cross section of circle.Cross section can be included in along pipe Length on constant shapes and size, or can such as include change shape and/or size.

Owing to the non-linear of chimney, opening and pipeline can be provided as being wider than significantly the diameter of linear object, the latter To be prevented from through to thermal diffusion component.Pipeline can be such as defined as by tubular structure to be had in the range of 2mm-10mm Breadth Maximum.By this way, air turnover rate can significantly increase without detraction user security.

Luminaire may further include the cap for solid state illumination device is connected to power power-supply, and described cap cooperates Be coupled to the first module.As nonrestrictive example, cap can include standard screw socket or bayonet cap, for by luminaire Connect and be arranged in particular kind of standard lamp.

In a particular embodiment, another opening is defined by cap described above at least in part.Such as, cap can be installed In the bases of the first module, and include or otherwise define the opening for air process.

Second module can have bulb shape in certain embodiments.

According to another aspect of the disclosure, it is provided that a kind of light fixture, it includes according in aforementioned one or more embodiments Luminaire.This light fixture keeper or the luminaire of for example, luminaire can be incorporated into device therein.

According to another aspect of the disclosure, also provide for a kind of method manufacturing solid state illumination device, comprising:

First module is provided；

Thermal diffusion component is contained in described first module；

Multiple solid-state light emitting elements are thermally coupled to thermal diffusion component；

Second module is provided, which defines the light exit window of light for being launched by solid-state light emitting element, the second module Including opening and the tubular structure with the non-linear shape extended from described opening, for by heat from thermal diffusion component towards Described opening transmits；And

First module is installed to the second module make:

Tubular structure extends towards thermal diffusion component；And

Non-linear shape prevents contacting of the linear object inserted in opening and thermal diffusion component.

According to various example embodiment, the first module is installed to the second module and can such as include ultrasonic bonding work Skill, clamp together, adhere to or be spirally connected.

Accompanying drawing explanation

It is described in detail, wherein by non-limiting example embodiment of this disclosure referring to the drawings:

Fig. 1 schematically depict the cross section of example luminaire known in the art；

Fig. 2 schematically depict the perspective view of each element of example luminaire known in the art；

Fig. 3 schematically depict the cross section of the luminaire according to embodiment；

Fig. 4 schematically depict the perspective view of the assembly of the luminaire according to embodiment；

Fig. 5 schematically depict the safety features of the improvement provided by example embodiment；

Fig. 6 schematically depict the explosive view of the luminaire according to embodiment；And

Fig. 7 depicts the luminous distribution of the luminaire according to embodiment and draws.

Detailed description of the invention

Embodiment of the disclosure a kind of solid state illumination device of offer, it provides the heat dissipating ability of improvement and keeps simultaneously Specific desired user security characteristic.Equipment according to embodiment includes tubular structure, and it also will be referred to as chimney, The outside opening formed by the outer blaze window of equipment is extended to from the heat-dissipation member of the inside being contained in equipment.Chimney Including non-linear shape, which prevent contacting of the linear object that inserts in opening and thermal diffusion component.Can provide relatively large Outside opening and Diameter of chimney, it is allowed to flow through the turnover rate of the improvement of the air/heat of dissipation element, and forbid using simultaneously The accidental shock of linear object is inserted at family via passing through provided outside opening.

As discussed above, prior art solid state illumination device has passed through at all chimney elements as described in Figure 1 Special heat transfer channel is provided in the structure of 20 and seeks to improve the dissipation of heat efficiency-of self-emission device and thus increase can The light output intensity obtained.But this passage enters with thermal diffusion component 22 owing to user inserts thin metal bar 14 by chimney Go conductive contacts thus introduced potential user and carry risk.

Really, especially in the U.S., product safety method prohibits the design allowing this risk especially: especially, for appointing It is required of for what product and can not have any length by insertion and there is the linear metal bar of 2mm diameter touch charged Or may charged part.

The equipment of prior art has sought to the diameter by simply restricting the ingate formed by light exit window (such as, being restricted to less than 2mm) breaks away from this difficulty.But, as was discussed above, this restriction to enter and from Obtainable air (with the heat therefore) turnover rate opening chimney top has appreciable impact, and this is due to the solid luminescent unit of equipment The less effective cooling of part and therefore adversely affect the life-span of equipment,

Embodiment of the disclosure the solution providing novelty, be described in greater detail now with reference to accompanying drawing.Should It is understood by accompanying drawing be only schematically and be not drawn on drawing.Should be understood that identical reference number runs through attached Figure refers to same or analogous part.

In fig. 3 it is shown that show according to the first of the embodiment of solid-state illumination (SSL) equipment of an aspect of this disclosure Example.Equipment 42 include first (under) housing module 44, accommodate multiple solid-state light emitting element 48.Light-emitting component is installed as and has The thermal diffusion component 46 of the conduction surfaces defining middle cavity 64 carries out thermal communication.Thermal diffusion component can such as include one Or multiple heat transfer surface or plate, it surrounds, encloses or otherwise defines middle cavity 64.

With first (under) module 44 couples collaboratively or engage is second (on) module 50, which defines and send out for solid-state The light exit window 52 of optical element and include that tubulose chimney structure 56 carries out, from it, the opening 54 that extends.Chimney structure is to downward Extend in the middle cavity 64 limited by thermal diffusion component 46, and the opening 54 in light exit window and thermal diffusion are provided Fluid communication between element 46.

Thermal diffusion component can be made up of any applicable heat conducting material, the metal being such as suitable for or metal alloy. As unrestriced example, thermal diffusion component can be made with aluminum or aluminum alloy, such as aluminum 1200.But, for ability heat For technical staff, any other metal or metal alloy can also use.

Thermal diffusion component can include one or more outward extending fin or auxiliary surface, the most mounted thereon or Thermally coupled has multiple solid-state light emitting element.These surfaces can limit annular surface part in one example, and it is around pipe The base part of shape component 54.These surfaces can provide such as installing the structurized support of SSL element.SSL element Or can be mounted directly to thermal diffusion component surface, or be arranged on carrier, carrier can such as include printed circuit Plate (PCB), the most metal-cored printed circuit board (PCB) (MCPCB) or any other carrier being suitable for.

In an embodiment, SSL element 48 is LED.The LED of any applicable type can be considered for being included in illumination and set In standby 42, such as middle power LED, high-capacity LED etc..SSL element may be selected so that the transmitting of each SSL element has phase With color and/or the light of colour temperature.The SSL element of the light that different colours instead, can be launched or the light with different-colour Mixing can be included in the illumination device.

Fig. 4 describes (light outgoing) module in the perspective, non-from its more clearly identification tubulose chimney structure Linear shape.In shown example embodiment, chimney defines spiral-shaped, including " three-dimensional " round central shaft Bending.

As described in Figure 5, spiral-shaped the preventing of chimney is inserted by by the upper shed 54 in light exit window Linear excellent 70 entered penetrate by thermal diffusion component 46 any other intraware of equipment (or actually).The spiral shell of bending Rotation radius is provided so that not to be deposited from opening 54 by arriving the linear paths of middle cavity 64, and it is without pass through chimney A part for wall.

In other example embodiment, tubular structure can not include spiral-shaped, but includes such as being limited to single The bending of plane.This embodiment remains able to obtain the technique effect preventing linear object from penetrating into thermal diffusion component, as long as The all angles of the bending of pipe are the most sharp-pointed.Especially, bending must make not exist from opening to thermal diffusion component simply Linear (virtual) path, and it is not passed through one or more parts on chimney wall or border.It is true that tubular construction or chimney are also Not necessarily need to be bent thus reach this effect, it contemplated that any applicable shape, the such as shape of band angle, example As having the chimney of U-shaped segmentation.

According to specific embodiment, chimney coils around jackshaft " dimensionally ", and wherein said axle is non-linear, and And/or person's wherein radius about the bending of described axle is heterogeneous.

In the example embodiment of Fig. 3 and Fig. 4, chimney includes circle or oval cross section.But be equal at other In example, chimney can include any shape of cross section, includes but not limited to square, triangle or any polygonal shape. Chimney can include constant shape of cross section and/or size, or has the shape of change and/or the cross section of size.

Chimney structure 56 allows air to flow between opening 54 and middle cavity 64, thus provides round illumination Fluid communication between surrounding and the thermal diffusion component 46 of equipment 42.The heat generated by SSL element 48 is by passing through thermal diffusion The surface of element or the conduction of conductive plate are transmitted.Heat then can or directly by conducting or being sent to by radiating in Between air (or other gases) within cavity 64.Hot-air in the cavities then by from around surrounding provide more Cold air is replaced, such as by diffusion and/or convection current.What chimney provided from SSL element by this way is effective The dissipation of heat, it is allowed to the SSL element of greater density is merged in equipment, and is provided with owing to SSL element is the behaviour of lower temperature Make and light output intensity that result is improved.

Spiral (or non-linear of other modes) shape of the chimney provided by disclosure embodiment allow chimney and Corresponding opening has relatively large diameter, without there being the risk of Danger Electric shock risk.In a particular embodiment, such as tubulose knot Structure 56 can define pipeline and have the Breadth Maximum in the range of 2mm-10mm.So, than prior art device, at opening Allow for bigger air turnover rate between 54 and middle cavity 64, hence improve heat dissipating ability.Further, by simulation It has been shown that the helical shaped of outgoing chimney is compared to having for the linear chimney of same diameter obtainable air stream Dynamic rate does not affect.

The example embodiment of Fig. 3 to Fig. 5 farther includes another opening 62, under it passes through (first) module 44 outer wall or Border is formed.Second opening is provided as and the first open fluid communication, and thermal diffusion component 46 and middle cavity 64 are positioned at the two Between.Typically, when equipment 42 in use, the second opening 62 is non-accessible preventing from without specific measure Contact with the accident of the charged assembly in equipment 42.But, when the second opening 62 for some purposes at equipment 42 in use Time be come-at-able, the second opening 62 can via by lower house module 44 a part formed another non-linear pipeline Or passage fluidly connects with middle cavity 64, thus prevent this unexpected contact, as being solved for tubular structure 56 before Release.Can instead, under this situation, the diameter of the second opening 62 can be limited to less than 2mm, although reduction is flowed by this By the volume of air of equipment 42 and the most less preferably.

Second opening 62 allows the lasting air across thermal diffusion component from an opening to another opening " by stream Dynamic ".By this way, from heat diffuser heat extract can be improved, this be due to heat mainly by heat carrying air away from The intraware of equipment, and by the transmission of the continued mechanical transmission of one or two outward opening.

According to specific embodiment, upper " light outgoing " module 50 can include bulb-shaped.But in other examples, mould Block can include any hope and applicable shape, such as tubular structure, square or rectangular structure or any other are many Limit shape structure.

In some instances, light exit window 52 can hide the whole outer surface regions of upper module 50, and permissible At least partly limiting by lower house module 44 the most further, thus light can from all parts of upper module (and Lower module is at least part of alternatively) carry out transmission.But in other example, window can only cover in the second module 50 The part in region, surface, be only topmost or middle region.

In certain embodiments, light exit window can include or farther include one or more beam shaping unit Part, the most one or more optical elements are for the mesh guiding emergent light, collimating and/or otherwise shape 's.

According to some embodiments, light exit window can be transparent or can be translucent.In some instances, Light exit window can be coloured or include colored filter, polarizing filter or specific for such as UV wavelength The light filter of electromagnetic wavelength.Light exit window and/or glazing outgoing module can be made up of any applicable material, example Such as the plastics being suitable for as the glass of nonrestrictive example or such as Merlon, PET or PMMA etc.

In a particular embodiment, luminaire 42 may further include conductive cap 66, and it is coupled to collaboratively, i.e. engages To lower house module 44, for connecting devices to the power power-supply of such as light fixture.In Fig. 3 to Fig. 5, it is only used as non-limiting Example schematic show screw cap fitment (fitting).Should be understood that cap can use any applicable shape, example Such as bayonet socket accessory, the accessory of GU type, the accessory etc. of MR type.Conductive cap can be with any applicable conductive material, such as AlNi as non-limiting example makes.

In the exemplary embodiment, conductive cap 66 can define the second opening 62 at least in part.Such as, the second opening can To include the opening of the part by described cap, or opening may be located at the top of cap and housing module 44 bottom it Between.

According to one or more embodiments, luminaire 42 may further include one or more Drive Module 68, It includes SSL element driver assembly, the driver of RCC switching mode the most in one example.

Schematically depict " blast " view of an example embodiment luminaire in figure 6.According to this example, Lower house module 44 includes the plastic construction 76 of outsourcing rubber moulding (overmould), and it is round the metal structure 74 of interior rubber-coating module. Plastic, rubber-coating mould can be made up of the polybutylene terephthalate (PBT) of the most such as PBT RG301 as non-limiting example. According to specific non-limiting example, metal rubber-coating module can be such as made up of the aluminium alloy of aluminum or such as AL3003.Heat Within diffuser element 46 is accommodated in interior metal rubber-coating module structure 74, and solid-state light emitting element is such as installed via MCPCB On the upper load-bearing surface of heat diffuser.

Fig. 7 shows the polar diagram of the light output of the luminaire 42 of the example embodiment according to Fig. 3 to Fig. 6.This Draw and clearly demonstrate the remarkable light distribution obtained in the range of close to 180 °, thus demonstrate non-linear tubulose knot The existence of structure 56 does not negatively affect the light distribution obtained by equipment 42.

Luminaire 42 according to the one or more embodiment of the disclosure can be included in such as illumination advantageously and set The light fixture of standby keeper, such as ceiling light fixture or luminaire are by the device of the such as smoke exhaust ventilator being incorporated into. The light fixture of other applicable types, advertisement light fixture of array such as including tubulose luminaire and the like, for ability It is apparent from for the technical staff in territory.

According to the disclosure on the other hand, it is provided that a kind of manufacture is according to one or more example embodiment described above The method of solid state illumination device.

In the specific embodiment of method, the first module 44 of luminaire and the second module 50 are the most logical Cross ultrasonic bonding, clamp together, adhere to or screw engage and carry out individually packaged one by one.These examples are not intended in entering Row limits, and can also use any applicable affixed means for a person skilled in the art.

Should be noted that embodiments mentioned above description rather than limit the disclosure, and those skilled in the art Any alternative embodiment can be designed without departing from scope of the following claims.In the claims, Ren Hefang Put the reference number in bracket to be not necessarily to be construed as limiting claim.Word " includes " being not precluded from except being set forth in right Element in requirement or the element outside step or the existence of step.Word " one ", " one " before element are not precluded from The existence of multiple this elements.The disclosure can be by including that the hardware of multiple discrete element is implemented.Several enumerating In the equipment claim of device, the several of these devices can be implemented by same item hardware.At mutually different appurtenance Profit require in recorded specific measure this simple the fact do not indicate that the merging of these measures can not be used to obtain Advantage.

Claims (12)

1. a solid state illumination device (42), it is characterised in that including:

First module (44), accommodates thermal diffusion component (46)；

Multiple solid-state light emitting elements (48), are thermally coupled to described thermal diffusion component；And

Second module (50), limits the light exit window (52) for described solid-state light emitting element (48), and with described first Module (44) engages, and described second module includes opening (54) and the pipe extended from described opening to described thermal diffusion component (46) Shape structure (56), transmits the heat from described thermal diffusion component for by described opening, and described tubular structure has Having non-linear shape, it prevents the linear object (70) inserting in described opening from contacting with described thermal diffusion component.

Solid state illumination device the most according to claim 1, it is characterised in that described tubular structure includes multiple wall part, It is arranged so that each linear virtual route from described opening to the zone line of described thermal diffusion component extends through institute State at least one the wall part in wall part.

Solid state illumination device the most according to claim 1 and 2, it is characterised in that farther include another opening (62), its With the described open fluid communication by described smooth exit window, wherein said thermal diffusion component (46) is positioned at described opening and institute State between another opening.

Solid state illumination device the most according to claim 1, it is characterised in that described thermal diffusion component (46) includes middle empty Chamber (64), and wherein said tubular structure (56) and described middle cavity be in fluid communication.

Solid state illumination device the most according to claim 4, it is characterised in that described tubular structure (56) extends into described Middle cavity (64).

Solid state illumination device the most according to claim 1, it is characterised in that described tubular structure (56) has coil or spiral shell Rotation shape.

Solid state illumination device the most according to claim 1, it is characterised in that described tubular structure (56) have rectangle or Circular cross section.

Solid state illumination device the most according to claim 1, it is characterised in that described tubular structure (56) defines to be had The pipeline of the Breadth Maximum in the range of 2mm-10mm.

Solid state illumination device the most according to claim 3, it is characterised in that farther include cap (66), for by described Solid state illumination device is connected to power power-supply, and described cap is coupled to described first module (44) collaboratively.

Solid state illumination device the most according to claim 9, it is characterised in that described another opening (62) is at least in part Defined by described cap (66).

11. solid state illumination devices according to claim 1, it is characterised in that described second module (50) has bulb-shaped Shape.

12. 1 kinds of light fixtures, it is characterised in that include the solid state illumination device as according to any one of claim 1 to 11.