DOWNLIGHT APPARATUS

Abstract

The downlight apparatus includes a surface rim, a rotation bracket, a bowl housing and a light source. The surface rim has an rim edge and a lateral wall. The rotation bracket includes a bracket body and two arms. Each arm has an arm bottom and a arm top. The rotation bracket is attached to the lateral wall. The bowl housing has a bowl edge. The bowl edge defines a light opening. The arm tops of the two arms are attached to the bowl edge. The bowl housing is rotatable with a tilt angle with respect to the arm tops. The light source is mounted inside the bowl housing for emitting a light from the light opening.

Claims

1. A downlight apparatus comprising: a surface rim with a rim edge and a lateral wall; a rotation bracket comprising a bracket body and two arms, wherein each arm has an arm bottom and an arm top, wherein the rotation bracket is attached to the lateral wall; a bowl housing with a bowl edge, wherein the bowl edge defines a light opening, wherein the arm tops of the two arms are attached to the bowl edge, wherein the bowl housing is rotatable with a tilt angle with respect to the arm tops; and a light source mounted inside the bowl housing for emitting a light from the light opening, wherein the light source comprises multiple types of LED modules, a control circuit and a light source plate, wherein the control circuit is connected to a manual switch for changing a mixed light parameter of the multiple types of LED modules, wherein the LED modules and the control circuit are placed on the light source plate, wherein electricity is supplied to control circuit and the LED modules from a driver, wherein the driver is placed outside the bowl housing.

2. The downlight apparatus of claim 1, wherein the bracket body is a ring shape.

3. The downlight apparatus of claim 1, wherein the bracket body is rotatable along the lateral wall of the surface rim.

4. The downlight apparatus of claim 1, wherein the arm top has a bent part for fitting a connector of the bowl edge.

5. The downlight apparatus of claim 4, wherein the arm is approaching to the connector from the arm bottom to the arm top along an approaching line and the bent part has a bending angle with respect to the approaching line.

6. The downlight apparatus of claim 4, wherein the connector has a sleeve for preventing detachment of the arm top from the connector.

7. The downlight apparatus of claim 6, wherein the bowl edge has a rotation groove for the arm top to rotate within the rotation groove.

8. The downlight apparatus of claim 1, further comprising a fixing bar attached to the surface rim, wherein a pair of fixing units are attached to the fixing bar for fixing the downlight apparatus to an installation cavity.

9. The downlight apparatus of claim 8, the bowl housing further comprising a connector configured to couple the bowl housing to the rotation bracket, wherein the connector has a protruding shaft to fit in a rotation hole of the arm top.

10. The downlight apparatus of claim 8, further comprising a driver box, wherein the driver box and the surface rim are fixed on opposite sides of the fixing bar.

11. The downlight apparatus of claim 1, wherein the bowl housing has a socket for transmitting electricity to the light source.

12. The downlight apparatus of claim 1, wherein the bowl housing has an outer part made of metal material for heat dissipation.

13. The downlight apparatus of claim 12, where a reflective cup is disposed to surround the light source for guiding the light to the light opening.

14. The downlight apparatus of claim 13, further comprising a light passing cover, wherein a cover edge of the light passing cover is attached to the bowl edge of the bowl housing for pressing the reflective cup to the bowl housing.

15. The downlight apparatus of claim 1, wherein a lens is attached to the bowl housing for guiding the light to form a light pattern.

16. The downlight apparatus of claim 15, wherein the lens is movable with respect to the bowl housing for changing the light pattern.

17. The downlight apparatus of claim 1, wherein the bowl housing has a conductive path for guiding electricity from the arm top to the light source.

18. The downlight apparatus of claim 17, wherein the arms provide the light source with electricity connection and provides the bowl housing with structure connection, wherein the bowl housing is detachable from the arms to be replaced with another bowl housing.

19. The downlight apparatus of claim 17, wherein a lock unit is disposed on the arm top to prevent accident removal of the bowl housing.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0051] FIG. 1 illustrates an exploded view of a downlight embodiment.

[0052] FIG. 2 illustrates a side view of the embodiment in FIG. 1.

[0053] FIG. 3 illustrates a zoom-up view of a connection among components.

[0054] FIG. 4 illustrates a downlight embodiment.

[0055] FIG. 5A and FIG. 5B show two operation states of an example.

[0056] FIG. 6 shows a rotation of a rotation bracket.

[0057] FIG. 7 shows a connector unit example.

[0058] FIG. 8A and FIG. 8B show a downlight apparatus example in which a lens is movable with respect to the bowl housing.

DETAILED DESCRIPTION

[0059] In FIG. 4, a downlight apparatus includes a surface rim 612, a rotation bracket 615, a bowl housing 602 and a light source 613.

[0060] The surface rim 612 has an rim edge 606 and a lateral wall 607.

[0061] The rotation bracket 615 includes a bracket body 614 and two arms 616.

[0062] Each arm 616 has an arm bottom 609 and a arm top 608.

[0063] The rotation bracket 615 is attached to the lateral wall 607.

[0064] The bowl housing 602 has a bowl edge 6021.

[0065] The bowl edge 6021 defines a light opening 6022.

[0066] The arm tops 608 of the two arms 616 are attached to the bowl edge 6021.

[0067] The bowl housing 602 is rotatable with a tilt angle with respect to the arm tops 608.

[0068] FIG. 5A and FIG. 5B shows an example for changing the tilt angle 802 by rotating the bowl housing 804 with respect to the arm 803 of the bracket along a rotation axis 801. By changing the tilt angle 802, a light direction 805 of a light emitted from the bowl housing 804 is adjusted.

[0069] In FIG. 4, the light source 613 is mounted inside the bowl housing 602 for emitting a light from the light opening 6022.

[0070] In FIG. 1, the bracket body 412 of the rotation bracket 4 is a ring shape, as illustrated in FIG. 1. The rotation bracket 4 also has two arms 41 as mentioned above.

[0071] FIG. 6 shows a top view of the example in FIG. 4. In some embodiments, the bracket body 901 is rotatable along the lateral wall 902 of the surface rim.

[0072] In FIG. 4, the arm top 608 has a bent part 6081 for fitting a connector of the bowl edge.

[0073] In FIG. 4, the arm is approaching to the connector from the arm bottom 609 to the arm top 608 along an approaching line 671 and the bent part 6081 has a bending angle 6082 with respect to the approaching line 671.

[0074] In FIG. 7, the connector has a sleeve 503 for preventing detachment of the arm top 501 from the connector 502. For example, the sleeve 503 may be a short tube for inserting the arm top 501 so that the arm top 501 is kept in the sleeve 503, preventing sudden dropping of the bowl housing.

[0075] In FIG. 3, the bowl edge has a rotation groove 229 for the arm top 411 to rotate within the rotation groove 229.

[0076] In FIG. 1, the downlight apparatus may also include a fixing bar 5 attached to the surface rim 1.

[0077] A pair of fixing units 521 are attached to the fixing bar 5 for fixing the downlight apparatus to an installation cavity, e.g. a ceiling cavity or a junction box.

[0078] In FIG. 3, the connector has a protruding shaft 21 to fit in a rotation hole 412 of the arm top 411.

[0079] In FIG. 1, the downlight apparatus may also include a driver box 6.

[0080] The driver box 6 and the surface rim 1 are fixed on opposite sides of the fixing bar 5.

[0081] In FIG. 5B, the blow housing has a socket 807 for transmitting electricity to the light source.

[0082] In some embodiments, the bowl housing has an outer part made of metal material for heat dissipation.

[0083] In FIG. 1, where a reflective cup 32 is disposed to surround the light source for guiding the light to the light opening.

[0084] In FIG. 1, the downlight apparatus may also include a light passing cover 33.

[0085] A cover edge 331 of the light passing cover 33 is attached to the bowl edge 451 of the bowl housing for pressing the reflective cup 32 to the bowl housing 452.

[0086] FIG. 8A and FIG. 8B show an example with lens 201 disposed facing to the light source 202.

[0087] The lens 201 is attached to the bowl housing for guiding the light to form a light pattern, e.g. a light beam with a first diameter.

[0088] The lens 201 is movable with respect to the bowl housing 207 for changing the light pattern by changing a relative distance between the lens 201 and the light source 202. For example, a screw groove is used for changing the relative distance between the lens 201 and the light source 202. When the relative distance is changed, the output light pattern, e.g. the diameter of the light pattern may be changed according to basic optical theory.

[0089] In FIG. 4, the bowl housing has a conductive path 6091 for guiding electricity from the arm top 609 to the light source 613.

[0090] In some embodiments, the arms provides the light source with electricity connection and provides the bowl housing with structure connection.

[0091] The bowl housing is detachable from the arms to be replaced with another bowl housing. When the electrical connection and the structure connection are both performed by the arms, it is easy and convenient for users to change a different bowl housing, e.g. to replace a broken module with a new module or to change a parameter of output light.

[0092] In FIG. 4, a lock unit 6092 is disposed on the arm top to prevent accident removal of the bowl housing. For example, a screw, a buckle or other locking structure may be used for keeping the arm top with the bowl housing.

[0093] In FIG. 8A, the light source includes multiple types of LED modules 202, a control circuit 204 and a light source plate 203.

[0094] The control circuit 204 is connected to a manual switch 209 for changing a mixed light parameter of the multiple types of LED modules 202.

[0095] The LED modules 202 and the control circuit 204 are placed on the light source plate 203.

[0096] Electricity is supplied to control circuit 204 and the LED modules 202 from a driver 205. For example, a common driver for converting an AC power to DC power is provided. The DC power is further used and dispatched by the control circuit 204. Compared with conventional art, the driver also handles control of the LED modules 202, the design adds a control circuit 204 corresponding to the LED modules 202. In such way, it is easy to change different setting by assembling a required light source plate mounted with LED modules and associated control circuit.

[0097] The driver 205 is placed outside the bowl housing, e.g. placed in a driver box outside the bowl housing.

[0098] Please refer to FIG. 1, which shows an exploded view of a downlight apparatus. In FIG. 1, the downlight apparatus has a light passing cover 33, a reflective cup 32, a surface rim 1, a bowl housing 452, a rotation bracket 4, a fixing bar 5 and a driver box 6.

[0099] The light source 3 is disposed inside the bowl housing 452. The fixing bar 51 has two lateral sub-arms 52.

[0100] FIG. 2 shows a side view of the example in FIG. 1.

[0101] In FIG. 2, the bowl housing 2 is attached to the arm 41 of the rotation bracket 4.

[0102] FIG. 3 shows a zoom-up view of the example in FIG. 3. In FIG. 3, in addition to the description mentioned above, there is a tilt surface 211 for easily guiding the connection of the arm 41 to the protruding shaft 21.

[0103] The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.

[0104] The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated.

[0105] Although the disclosure and examples have been fully described with reference to the accompanying drawings, it is to be noted that various changes and modifications will become apparent to those skilled in the art. Such changes and modifications are to be understood as being included within the scope of the disclosure and examples as defined by the claims.